Difference between revisions of "POC Conf. Call 3-29-11"

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In attendance:  
 
In attendance:  
  
−
POC members:   
+
POC members:  Laurel Cooper (OSU), Ramona Walls (NYBG), Justin Preece (OSU), Justing Elser (OSU), Pankaj Jaiswal (OSU), Marie Alejandra Gandolfo; (Cornell University, Dennis Stevenson (NYBG)
  
−
Absent:
+
Absent: Barry Smith (University at Buffalo, NY), Chris Mungall (Lawrence Berkeley National Lab)
  
−
Collaborators:  
+
Collaborators: none
  
  
−
Acceptance of the minutes from the [[POC_Conf._Call_3-22-11]]?
+
Acceptance of the minutes from the [[POC_Conf._Call_3-22-11]]? ''There were no changes, additions, or deletions.''
  
 
=Issues with the ontology arising during writing:=
 
=Issues with the ontology arising during writing:=
Line 16: Line 16:
 
This section is for questions about the PO that came up while were writing the manuscript. These are issues that need to be addressed by the curators, preferably before publication and the next release.
 
This section is for questions about the PO that came up while were writing the manuscript. These are issues that need to be addressed by the curators, preferably before publication and the next release.
  
−
==Rename Plant Structure Ontology (PSO) to Plant Anatomical Entity Ontology (PAEO) or Plant Anatomy Ontology (PAO)?==
+
==Rename Plant Structure Ontology (PSO) to Plant Anatomy Ontology (PAO)?==
  
 
Reason: better reflects the new upper structure, highlights the changes we have done over the past year
 
Reason: better reflects the new upper structure, highlights the changes we have done over the past year
  
 
PAO is consistent with other anatomical entities in OBO foundry, like HAO.
 
PAO is consistent with other anatomical entities in OBO foundry, like HAO.
 +
 +
 +
''We agreed to change the name to Plant Anatomy Ontology. Since this name or PAO does not actually occur in the ontology anywhere, and it is just a name for one branch of the PO, changing it is not a problem. Also, the file on the SVN, where the separate versions of the files are stored, the PAO branch file is already called plant_anatomy.obo, so this name is more consistent.''
 +
 +
''We should check with CM to see if we should change the namespace, which is currently plant_structure to plant_anatomy, and what the ramifications of such a change would be.''
 +
 +
''This name Plant Structure ontology is used on the PO webpage and in other spots where the individual files are linked to (such as Bioportal)- so it should also change in those places.  Will need to be changed on the AmiGO Browser''
  
 
==Use of ontology id's in definitions==
 
==Use of ontology id's in definitions==
Line 29: Line 36:
  
 
For plant cell, we reference GO ID in the comment, but also have it as an xref.
 
For plant cell, we reference GO ID in the comment, but also have it as an xref.
 +
 +
 +
''For the top level PAO terms that reference CARO, we should remove the ID from the definition and add it as a definition dbxref. We should put the definition and ID of the CARO term into the comment, like we have done with GO for plant cell.''
 +
 +
''As a general guideline, whenever we use a definition from another ontology for a term, but alter it to fit PO, we should put the other ontology ID '''plus''' POC:curators into the definition dbxrefs.  This gives credit to the source of the definition''
 +
 +
''Note: We should check that the browser will automatically create the hyperlinks, or we can also add them there.  We should request CARO to the GO Dbx database, along with SourceForge and PATO.''
 +
 +
''Does CARO/PATO need to have a website in order to do so?  We could use the link to Bioportal''
 +
 +
''LC: I added a statement and example explaining this to our [[PO_Developers_Guide]].''
  
 
==embryonic plant structure==
 
==embryonic plant structure==
  
−
Do we want dual parentage for embryonic structures?  Should we use intersection_of relations, instead of asserting dual parentage?
+
-Do we want dual parentage for embryonic structures?  Should we use '''intersection_of relations''', instead of asserting dual parentage?
 +
 
 +
-Will the intersection_of relations be displayed by AmiGO? No they are not
  
−
Here is a figure of how it would work, if the is_a relation to the "normal" plant structure were asserted, and the relation to embryonic plant structure were inferred using intersection_of relations, using embryonic apical cell as an example:
+
-Here is a figure of how it would work, if the is_a relation to the "normal" plant structure were asserted, and the relation to embryonic plant structure were inferred using intersection_of relations, using embryonic apical cell as an example:
  
 
[[File:Embryonic_apical_cell1.jpg]]
 
[[File:Embryonic_apical_cell1.jpg]]
  
−
This method defined embryonic plant cell as is_a: embryonic plant structure, intersection_of: is_a plant structure, intersection_of: part_of embryo.
+
pi represents participates_in relation
 +
 
 +
dotted lines are relations that are inferred by the reasoner.
 +
 
 +
*This method defined '''embryonic plant cell''' as is_a: '''embryonic plant structure''', intersection_of: is_a '''plant structure''', intersection_of: part_of '''embryo'''.
 +
 
 +
Because the intersection_of relations specify sufficient conditions, any plant cell that has a part_of relation to embryo will be classified as an embryonic plant cell whenever the reasoner is on. Similar relations could be used for other embryonic plant structures.
 +
 
 +
* This allows us to classify cells as plant cells, tissues as plant tissues, etc., but still lets them have a relationship to embryonic plant structure, while other structures, like '''embryo proper''', could remain as is_a children of embryonic plant structure.  
  
−
Because the intersection_of relations specify sufficient conditions, any plant cell that has a part_of relation to embryo will be classified as an embryonic plant cell whenever the reasoner is on.
+
This is the method specified as the best_practice for OBO foundry (at least orally, if not actually in their principles).
  
−
This allows us to classify cells as plant cells, etc. This is the method specified as the best_practice for OBO foundry (at least orally, if not in their documents).
 
  
−
==in vitro plant structures==
+
''We agreed that it was okay to start using intersection_of relations, and to use them to classify embryonic plant structures.''
  
−
What are the boundaries for an in vitro structure?
+
''For each new live release, we will create a version of the plant_ontology file that asserts the relations implied by the reasoner. For the time being, we should do the assertions manually (either in OboEdit, or with a script, which we manually check), to be sure that they are relations we want. This would also normally be done regularly while editing, by using the reasoner.''
  
−
What about a whole plant or parts thereof that are grown in culture? Suppose someone had an annotation for a leaf from an in vitro grown plant. Where should they put it?
+
''Do we want to release two versions -- one with implied links asserted and one without -- or should we keep the file without only for curators?''
 +
 
 +
==[https://sourceforge.net/tracker/index.php?func=detail&aid=2958948&group_id=76834&atid=835555 ''in vitro'' plant structure ]==
 +
 
 +
What are the boundaries for ''in vitro'' structure?
 +
 
 +
What about a whole plant or parts thereof that are grown in culture? Suppose someone had an annotation for a leaf from an ''in vitro'' grown plant. Where should they put it?
  
 
Also, we talked about using derived_from relations for in vitro structures (e.g., cultured cell derived_from plant cell). Do we still want to do that? How to assure that the derives from relations always hold?
 
Also, we talked about using derived_from relations for in vitro structures (e.g., cultured cell derived_from plant cell). Do we still want to do that? How to assure that the derives from relations always hold?
  
−
==has_part relation==
+
 
 +
''We discussed whether or not we want the class for in vitro plant structures to only include plant structures that have not yet fully differentiated into tissues or organs (or whole plants, for that matter). We can add a subclass of cultured callus for "differentiating callus" (if it can be defined correctly).''
 +
 
 +
''It was suggested on the current definition could to be changed to reflect the fact that it should only include non-differentiated structures.''
 +
 
 +
''LC: This makes no sense at all- where do you draw the line?- we still have not defined the boundaries.  I am reopening the SF tracker.  Whether or not something is ''in vitro'' has nothing to do with whether or not it is differentiated.''
 +
 
 +
''Perhaps in vitro structures should be children of their respective whole plant parts (cell, tissue, and embryo). Just like an embryonic plant cell is still a plant cell, an in vitro plant cell is still a plant cell.''
 +
 
 +
''Would it be possible to use intersection_of terms to classify structures as in vitro, so they could also be children of their respective whole plant parts, like we did for embryonic plant structures? Would have to have some discriminating character, like "participates_in in vitro growth," which is not currently part of the PO. Might be more practical at this point to use dual parentage.''
 +
 
 +
''We will work further on this and discuss this more next week''
 +
 
 +
==''has_part'' relation==
 +
 
 +
For more details- please see the [[POC Technical Issues Page]]
  
 
How will we deal with has_part relation? for this release? for future releases?
 
How will we deal with has_part relation? for this release? for future releases?
  
  
−
 
+
We confirmed that the '''reciprocal part_of and has_part relations''' were what was actually cause the problem with loading the obo file onto our browser:
−
We confirmed that the reciprocal part_of and has_part relations were what was actually cause the problem with loading the obo file onto our browser:
 
  
 
-JE tried to load the dev browser with the current plant_ontology.obo file with only one reciprocal part_of/has_part relation, but no other known problems, and it would not load.
 
-JE tried to load the dev browser with the current plant_ontology.obo file with only one reciprocal part_of/has_part relation, but no other known problems, and it would not load.
Line 66: Line 113:
 
-Still have to test loading it onto beta browser with annotations
 
-Still have to test loading it onto beta browser with annotations
  
−
==participates_in relation==
+
Report from JE @ tests and annotations etc:
 +
 
 +
''PJ created some smaller ontology files with has_part relations to test in the beta browser. JE confirmed that they load fine, which means that the has_part relation does not interfere with loading. We still have the issue of how annotations pass through the has_part relations. PJ and JE are working on it with CM.''
 +
 
 +
''For the time being, the annotations can be manually assigned to the correct terms, if necessary''
 +
 
 +
''For the time being, we can continue to use has_part relations, but we will have to revisit how to deal with them before the next release.''
 +
 
 +
==''participates_in'' relation==
  
 
Need to get these in.  Should we make a test file to see if these are going to cause issues?
 
Need to get these in.  Should we make a test file to see if these are going to cause issues?
Line 73: Line 128:
  
  
−
'''Question:''' If a parent term (e.g., plant gametangium) has a participates_in relation, do we need to specify participates_in relation for all its children (e.g., archegonium and antheridium), or will the reasoner know to apply the relation to the children?
+
'''Question:''' If a parent term (e.g., plant gametangium) has a ''participates_in relation'', do we need to specify ''participates_in'' relation for all its children (e.g., archegonium and antheridium), or will the reasoner know to apply the relation to the children?
  
 
Should not need it for children if it is transitive:
 
Should not need it for children if it is transitive:
  
−
A is_a  B, and B participates_in C, then A participates_in C
+
A is_a  B, and B ''participates_in'' C, then A ''participates_in'' C
  
 
and
 
and
  
−
A part_of B, and B  participates_in C, then A participates_in C
+
A ''part_of'' B, and B  ''participates_in'' C, then A ''participates_in'' C
  
−
'''Answer''' (from Chris Mungall): participation isn't transitive.
+
'''Answer''' (from Chris Mungall): participation isn't transitive. (''in OboEdit by default'')
  
 
what you want to say is that a is part of b, and b participates in c, then a participates in c
 
what you want to say is that a is part of b, and b participates in c, then a participates in c
Line 96: Line 151:
  
  
−
this gives the reasoner the information that an apical cell participates in gametophyte phase via the part_of relation
+
- this gives the reasoner the information that an apical cell participates_in gametophyte phase via the part_of relation
  
 
(really this axiom should be in RO, and there should be some mechanism where you can just import it but things are a bit primitive right now)
 
(really this axiom should be in RO, and there should be some mechanism where you can just import it but things are a bit primitive right now)
  
 
RW: I did this and it worked.
 
RW: I did this and it worked.
 +
 +
''LC: Should we request this feature on the OBO-Edit tracker?''
 +
 +
''It is okay to continue to add the participates_in relations to the developers' file. PJ prepared an icon using the letters P-i in green, which we can put on the browser.''
  
 
=Issues arising from last week's meeting:=
 
=Issues arising from last week's meeting:=
 +
 +
''New definitions for gametangium, micro- and megagametophytes, and sperm and egg cells were accepted. The SF tracker items will be set to pending, so anyone can comment on them for the next few weeks.''
  
 
==Recap of [https://sourceforge.net/tracker/?func=detail&aid=3109542&group_id=76834&atid=835555 Gametangium, antheridium, archegonium and related terms]==
 
==Recap of [https://sourceforge.net/tracker/?func=detail&aid=3109542&group_id=76834&atid=835555 Gametangium, antheridium, archegonium and related terms]==
Line 110: Line 171:
 
'''plant gametangium''' (PO:0025124): A plant organ that produces one or more gametes that are located in it and is part of a whole plant in the gametophytic phase.''
 
'''plant gametangium''' (PO:0025124): A plant organ that produces one or more gametes that are located in it and is part of a whole plant in the gametophytic phase.''
  
−
participates in gametophytic phase, only_in_taxon bryophytes plus pteridophytes plus gymnosperms (=never_in_taxon angiosperms)
+
participates_in gametophytic phase, only_in_taxon bryophytes plus pteridophytes plus gymnosperms (=never_in_taxon angiosperms)
 +
 
 +
Comment: The embryo sac and pollen replace the function of gametangia of producing gametes in gymnosperms (for antheridia) and angiosperms (for both antheridia and archegonia).
  
 
-Should not say disjoint_from megagametophyte, because we will define megagametophyte such that archegonium is a part of it (see below).
 
-Should not say disjoint_from megagametophyte, because we will define megagametophyte such that archegonium is a part of it (see below).
  
−
-We used "located in" rather than "contained in." Contained_in is used when an organism has a cavity or space that contains some material object that is not part of it (such as a fetus in a womb). Located_in is used when one class located in another is also part of the class it is located in. We will use located in for the same reason a human mother's egg is part of the mother rather than contained in the mother. Also, we can put pictures on Plantsystematics.org that show gametangium development, and show how the egg cell derives from one of the same population of cells as the rest of the gametangium.
 
  
−
-'''New subsets were added for bryophytes, pteridophytes, and gymnosperms''', in addition to the subset for angiosperms. Will put terms in proper subset(s) until we can use the only_in taxon relation.
+
'''*Use of "located in" rather than "contained in."'''
 +
 
 +
''Contained_in'' is used when an organism has a cavity or space that contains some material object that is not part of it (such as a fetus in a womb).
 +
 
 +
''Located_in'' is used when one class located in another is also part of the class it is located in.
 +
 
 +
- We will use located_in for the same reason a human mother's egg is part of the mother rather than contained in the mother. Also, we can put pictures on Plantsystematics.org that show gametangium development, and show how the egg cell derives from one of the same population of cells as the rest of the gametangium.
 +
 
 +
*'''New subsets were added for bryophytes, pteridophytes, and gymnosperms''', in addition to the subset for angiosperms. Will put terms in proper subset(s) until we can use the only_in taxon relation.
 +
 
 +
*'''Added new relation ''participates_in''.'''
 +
 
  
−
-'''Added new relation ''participates_in''.'''
+
''This definition of gametangium works for algae. Could add a child term oogonium. Do we want to add a subset for algae? At this point, we don't have any terms specific to algae, but several that apply.''
  
  
 +
'''antheridium''' (PO:0025125): A plant gametangium that produces antheridial sperm cells that are located in it.''
  
−
'''antheridium''': A plant gametangium that produces antheridium sperm cells that are located in it.''
+
''LC: note on the dev browser it says: "produces antheridium sperm cells"''
  
 
Comment: A antheridium has a single outer layer of non-sperm producing cells called the sterile jacket layer and sporagenous cells on the interior. There are no antheridia in seed plants.
 
Comment: A antheridium has a single outer layer of non-sperm producing cells called the sterile jacket layer and sporagenous cells on the interior. There are no antheridia in seed plants.
Line 129: Line 203:
  
  
−
'''archegonium''': A plant gametangium that produces an archegonium egg cell that is located in it.  
+
''Should add antheridial initial as a synonym of generative cell.''
 +
 
 +
 
 +
'''archegonium'''(PO:0025126): A plant gametangium that produces an archegonial egg cell that is located in it.  
  
 
Comment: There are no archegonia in angiosperms or ''Gnetum'' or ''Weltwischia''.
 
Comment: There are no archegonia in angiosperms or ''Gnetum'' or ''Weltwischia''.
Line 139: Line 216:
 
===New terms and proposed definitions from last week's meeting===
 
===New terms and proposed definitions from last week's meeting===
  
−
We should obsolete PO:0020092 megagametophyte and PO:0020091 microgametophyte, and create new terms that can encompass dioecious bryophyte gametophytes as well as the gametophytes in angiosperms.  Embryo sac and pollen grain will be children of these terms, as well as archegonial megagatephyte and antheridial microgametophyte.
+
We should obsolete PO:0020092 megagametophyte and PO:0020091 microgametophyte, and create new terms that can encompass dioicous bryophyte gametophytes as well as the gametophytes in angiosperms.  Embryo sac and pollen grain will be children of these terms, as well as archegonial megagatephyte and antheridial microgametophyte.
 +
 
 +
LC: for us non bryophyte experts [http://en.wikipedia.org/wiki/Monoicous dioicous and monoicous ]
  
  
−
'''megagametophyte''': A whole plant in the gametophytic phase that produces only egg cells.
+
'''[https://sourceforge.net/tracker/?func=detail&aid=3257959&group_id=76834&atid=835555 megagametophyte]'''(PO:0025279): A whole plant in the gametophytic phase that produces only egg cells.
  
 
Comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. In angiosperms, ''Gnetum'' and ''Weltwischia'' the megagametophyte is greatly reduced. The megagametophyte in angiosperms is an embryo sac.
 
Comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. In angiosperms, ''Gnetum'' and ''Weltwischia'' the megagametophyte is greatly reduced. The megagametophyte in angiosperms is an embryo sac.
  
  
−
'''microgametophyte''': A whole plant in the gametophytic phase that produces only sperm cells.
+
'''[https://sourceforge.net/tracker/?func=detail&aid=3257959&group_id=76834&atid=835555 microgametophyte]''' (PO:0025280): A whole plant in the gametophytic phase that produces only sperm cells.
  
 
Comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In some pteridophytes, microgametophytes develop from microspores. In seed plants the male gametophyte is reduced to a pollen grain.
 
Comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In some pteridophytes, microgametophytes develop from microspores. In seed plants the male gametophyte is reduced to a pollen grain.
  
  
−
'''embryo sac''' (existing term, PO:0025074): A megagametophyte that is contained in an ovary.
+
'''[https://sourceforge.net/tracker/index.php?func=detail&aid=3028397&group_id=76834&atid=835555 embryo sac]''' (existing term, PO:0025074): A megagametophyte that is located in an ovule in an ovary.
  
 
Comment: Produces an embryo sac egg cell.
 
Comment: Produces an embryo sac egg cell.
  
−
develops_from megaspore, only_in_taxon angiosperm plus Gnetum plus Weltwischia?`
+
develops_from megaspore, only_in_taxon angiosperm
 +
 
 +
 
 +
Do we need a separate class for the microgametophytes in Gnetum and Weltwischia? Usually don't use "embryo sac" for these taxa.
  
 +
''For the time being, any annotations for these two genera should just be placed under microgametophyte or megagamethopyte.''
  
−
'''pollen''': A microgametophyte that is located in a pollen sac.
+
 
 +
 
 +
'''[https://sourceforge.net/tracker/index.php?func=detail&aid=3257963&group_id=76834&atid=835555 pollen]''': A microgametophyte that is located in a pollen sac.
  
 
Comment: Produces pollen sperm cells.
 
Comment: Produces pollen sperm cells.
Line 166: Line 251:
  
 
-Would pollen grain be a better name for this? Pollen implies all of the pollen grains, collectively.
 
-Would pollen grain be a better name for this? Pollen implies all of the pollen grains, collectively.
 +
 +
''will add pollen grain as an exact synonym''
  
  
−
'''archegonial megagametophyte''': A megagametophyte that has as parts one or more archegonia.
+
'''[https://sourceforge.net/tracker/?func=detail&aid=3257959&group_id=76834&atid=835555 archegonial megagametophyte]''': A megagametophyte that has as parts one or more archegonia.
  
 
Comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores.
 
Comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores.
Line 175: Line 262:
  
  
−
'''antheridial microgametophute''': A microgametophyte that has as parts one or more antheridia.
+
'''[https://sourceforge.net/tracker/?func=detail&aid=3257959&group_id=76834&atid=835555 antheridial microgametophyte]''': A microgametophyte that has as parts one or more antheridia.
  
 
comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In some pteridophytes, microgametophytes develop from microspores.  
 
comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In some pteridophytes, microgametophytes develop from microspores.  
Line 181: Line 268:
 
only_in_taxon bryophyte plus pteridophytes
 
only_in_taxon bryophyte plus pteridophytes
  
−
===New definitions for egg and sperm cells from last week's meeting===
+
===New definitions for [https://sourceforge.net/tracker/index.php?func=detail&aid=3030032&group_id=76834&atid=835555 egg cells] and [https://sourceforge.net/tracker/index.php?func=detail&aid=3030033&group_id=76834&atid=835555 sperm cells] from last week's meeting===
  
−
'''archegonium egg cell''' (PO:0025122): An egg cell that is produced by and located in an archegonium.
+
'''archegonial egg cell''' (PO:0025122): An egg cell that is produced by and located in an archegonium.
  
 
only_in_taxon bryophytes plus pteridophytes plus gymnosperms (or never_in taxon angiosperms), part_of archegonium
 
only_in_taxon bryophytes plus pteridophytes plus gymnosperms (or never_in taxon angiosperms), part_of archegonium
Line 190: Line 277:
 
'''embryo sac egg cell''' (PO:0025123): An egg cell that is produced by and located in an embryo sac.
 
'''embryo sac egg cell''' (PO:0025123): An egg cell that is produced by and located in an embryo sac.
  
−
only_in_taxon angiosperm plus ''Gnetum'' plus Weltwischia, part_of egg apparatus
+
only_in_taxon angiosperm, part_of egg apparatus
 +
 
 +
''For Gnetum and Weltwischia, should just use parent terms (egg cell or sperm cell).''
  
  
−
'''antheridium sperm cell''' (PO:0025120): A sperm cell that is produced by and located in an antheridium.
+
'''antheridial sperm cell''' (PO:0025120): A sperm cell that is produced by an antheridium.
  
 
only_in_taxon bryophytes plus pteridophytes (or never_in seed plants), part of antheridium
 
only_in_taxon bryophytes plus pteridophytes (or never_in seed plants), part of antheridium
  
  
−
'''pollen sperm cell''' (PO:0025121): A sperm cell that is produced by and located in a pollen grain.
+
'''pollen sperm cell''' (PO:0025121): A sperm cell that is produced by a pollen grain.
 +
 
 +
Comment: A pollen sperm cell consists of a nucleus without a cell wall.
  
 
only_in_taxon seed plants, part_of pollen
 
only_in_taxon seed plants, part_of pollen
  
 
=New Physcomitrella and related terms=
 
=New Physcomitrella and related terms=
 +
 +
''These items were postponed until next week.''
 +
 
==Collective plant structures:==
 
==Collective plant structures:==
 
===[https://sourceforge.net/tracker/?func=detail&aid=3244685&group_id=76834&atid=835555 vascular and non-vascular shoot systems]===
 
===[https://sourceforge.net/tracker/?func=detail&aid=3244685&group_id=76834&atid=835555 vascular and non-vascular shoot systems]===
Line 212: Line 306:
 
comment: Does not have any xylem of phloem, but may have other conducting cells, such hydroids or leptoids. Can occur in both the gametophytic and sporophytic phases of non-vascular plants.
 
comment: Does not have any xylem of phloem, but may have other conducting cells, such hydroids or leptoids. Can occur in both the gametophytic and sporophytic phases of non-vascular plants.
  
−
Children of non-vascular shoot system will be gametophore (see below) and thallus. Technically, the sporophyte of a bryphyte is also a non-vascular shoot system (since it doesn't have roots or vascular tissue), but we don't have a class for that, since it is a whole plant in the sporophytic phase.
+
subsets for bryophytes and pteridophytes
 +
 
 +
 
 +
Could we use the relation "lacks_part"? Then we could define this class using intersection_of relations, which would be better. CL has used this (lack_plasma_membrane_part). Works better in OWL; translates into something like has_part exactly 0 (some ?Y) [need to check this].
 +
 
 +
 
 +
Children of non-vascular shoot system will be gametophore (see below) and thallus. If we used the lacks_part relation and intersection_of relations, we could make gameotophore a child of shoot system, and the reasoner would infer it was a non-vascular shoot system.
 +
 
 +
Can't use participates_in gametophyric phase, because the sporophyte of a bryphyte is also a non-vascular shoot system (since it doesn't have roots or vascular tissue).
  
−
subsets for bryophytes and pteridophytes
 
  
  
Line 221: Line 322:
 
comment: Has xylem and/or phloem. Occurs only in the sporophytic phase of vascular plants.
 
comment: Has xylem and/or phloem. Occurs only in the sporophytic phase of vascular plants.
  
−
participates_in sporophytic phase
+
participates_in sporophytic phase, has_part vascular system
  
  
Line 251: Line 352:
 
Comment: Occurs in mosses (and leaf liverworts?). Develops from a caulonema cell in mosses.
 
Comment: Occurs in mosses (and leaf liverworts?). Develops from a caulonema cell in mosses.
  
−
participates_in gametophytic phase
+
participates_in gametophytic phase, has_part shoot axis apical cell
−
 
 
−
==[https://sourceforge.net/tracker/?func=detail&aid=3234956&group_id=76834&atid=835555 apical cell]==
 
−
 
 
−
Moss Ontology has requested the term '''apical cell'''. Apical growth in byrophytes is via division of a single cell at the tip of the shoot apical meristem. They also requested '''shoot apical cell''' and '''phyllid apical cell'''.
 
−
 
 
−
 
 
−
Non-seed vascular plants can also have an apical cell, that is, a single dividing cell at the apex of a root or shoot.
 
−
 
 
−
 
 
−
We already have the term '''apical cell (PO:0004000)''', which is an embryonic cell: "An embryonic plant cell that is the uppermost cell formed after the first division of the zygote." The embryonic apical cell can also be found in non-angiosperms. Suggest renaming PO:0004000 '''embryonic apical cell''' for clarity and using the name '''apical cell'''for the term described below. May want to obsolete PO:0004000 and replace with the two new terms, to avoid confusion in the names.
 
−
 
 
−
 
 
−
'''Definition of apical cell from Esau:''' The single initial cell in an apical meristem of root or shoot. Characteristic of many lower vascular plants.
 
−
 
 
−
'''Definition of apical cell from Crum:''' A single cell at the tip of a stem, leaf, leaf or other structure that divides repeatedly to form new cells; also known as an apical intial.
 
−
 
 
−
Is apical cell more consistent with '''meristematic cell''' (A cell synthesizing protoplasm and producing new cells by division and with only a primary cell wall) or with '''initial cell''' (A meristematic cell that by division gives rise to two cells, one of which remains meristematic, while the other is added to the plant body)? Probably meristematic cell, because the apical cell can give rise to more than two cells (because it can have three or four cutting faces).
 
−
 
 
−
 
 
−
'''Proposed def. of apical cell:'''A single meristematic cell at the tip of a shoot apex or root apex
 
−
 
 
−
Comment:  Occurs in bryophytes and some pteridophytes, where apical growth results from division of a single meristematic cell located at the tip of the apical meristem, rather than from a population of meristematic cells located at the tip of the apical meristem. May be tetrahedral shaped, with three (in shoots) or four (in roots) cutting faces, or wedge shaped with two cutting faces (in non-vascular leaves).  The apical cell is established upon the first cell division of an embryo or germination of a spore.
 
−
 
 
−
-note: the last sentence of the comment allows us to classify an embryonic apical cell as an apical cell.
 
−
 
 
−
 
 
−
Suggested ontology structure for the children of apical cell:
 
−
 
 
−
[[File:apical_cell1.jpg]]
 
−
 
 
−
Includes two ways of classifying: by structure and by gametophyte/sporophyte. Structural relations are asserted as is_a relations. The relations to gametophyte or sporophyte are inferred by the intersection_of terms.
 
−
 
 
−
 
 
−
===New terms and definitions for apical cells===
 
−
 
 
−
 
 
−
'''gametophytic apical cell:''' An apical cell that is part of a whole plant in the gametophytic phase.
 
−
 
 
−
Comment: Occurs in mosses and other bryophytes.
 
−
 
 
−
intersection_of: is_a apical cell, intersection_of: participates_in gametophytic phase
 
−
 
 
−
 
 
−
'''sporophytic apical cell:''' An apical cell that is part of a whole plant in the sporophytic phase.
 
−
 
 
−
Comment: Occurs in pteridophytes and the sporophyte of bryophytes.
 
−
 
 
−
intersection_of: is_a apical cell, intersection_of: participates_in sporophytic phase
 
−
 
 
−
 
 
−
'''root apical cell''': A sporophytic apical cell that is part of a root apical meristem.
 
−
 
 
−
comment: Only occurs in the sporophytic phase of vascular plants.
 
−
 
 
−
part_of root apical meristem
 
−
 
 
−
 
 
−
'''shoot apical cell''': An apical cell that is part of a shoot system.
 
−
 
 
−
comment: May occur in shoot axes or leaves of bryophytes or ferns.
 
−
 
 
−
part_of shoot system
 
−
 
 
−
 
 
−
'''gametophore apical cell''': A shoot apical cell that is part of a gametophore.
 
−
 
 
−
comment: Occurs in the non-vascular shoot system of the gametophyte of mosses.
 
−
 
 
−
intersection_of: is_a gametophytic apical cell, intersection_of: part_of gametophore
 
−
 
 
−
 
 
−
'''thallus apical cell''': A gametophytic apical cell that is part of a thallus.
 
−
 
 
−
comment: We still need to add the term thallus.
 
−
 
 
−
part_of thallus (once we add it)
 
−
 
 
−
 
 
−
'''leaf apical cell''': A shoot apical cell that is part of a leaf apex.
 
−
 
 
−
comment: Occurs in the non-vascular leaves of bryophytes and the vascular leaves of some mosses. Only in plants where leaf growth is apical.
 
−
 
 
−
part_of leaf
 
−
 
 
−
 
 
−
'''non-vascular leaf apical cell''': A leaf apical cell that is part of a leaf apex of a non-vascular leaf.
 
−
 
 
−
comment: Occurs in the non-vascular leaves of bryophytes, which grow by division of a single, wedge-shaped apical cell with two cutting faces.
 
−
 
 
−
part_of non-vasucular leaf, intersection_of gametophore apical cell; synonym: phyllid apical cell
 
−
 
 
−
 
 
−
'''vascular leaf apical cell''': A leaf apical cell that is part of the leaf apex of a vascular leaf.
 
−
 
 
−
comment: Occurs in vascular leaves of some ferns in their sporophytic phase.
 
−
 
 
−
part_of vascular leaf; intersection_of sporophytic apical cell
 
−
 
 
−
 
 
−
'''shoot axis apical cell:''' An apical cell at the tip of a shoot apical meristem.
 
−
 
 
−
Comment: Divides to produces leaf initial cells and other stem tissues.
 
−
 
 
−
part_of shoot apical meristem
 
−
 
 
−
 
 
−
'''gametophore axis apical cell''': A shoot axis apical cell at the tip of a gametophore axis.
 
−
 
 
−
Comment: Occurs at the tips of the stems and branches of bryophytes.
 
−
 
 
−
part_of gametophore axis, intersection_of gametophore apical cell; synonym: cauloid apical cell
 
−
 
 
−
 
 
−
'''vascular shoot axis apical cell''': A shoot axis apical cell at the tip of a shoot apical meristem in a vascular shoot system.
 
−
 
 
−
Comment: Occurs in some ferns in their sporophytic phase.
 
−
 
 
−
part_of vascular_shoot system, intersection_of sporophytic apical cell; synonym: fern shoot axis apical cell
 
−
 
 
−
If we decide to add a term for vascular shoot axis, then this definition can reference that instead of vascular shoot system.
 
−
 
 
−
 
 
−
Also:
 
−
 
 
−
'''embryonic apical cell (PO:0004000)''':  A shoot axis apical cell that is part of an embryo and is the uppermost cell formed after the first division of the zygote.
 
−
 
 
−
Comment: For plants that grow via an apical cell in their sporophytic phase, the embryonic apical cell may remain the apical cell throughout their life.
 
−
 
 
−
==Plant organs:==
 
−
 
 
−
===[https://sourceforge.net/tracker/?func=detail&aid=3185162&group_id=76834&atid=835555 cauloid]===
 
−
- This is the term used for the gametophore stem or axis.
 
−
 
 
−
Suggest using '''gametophore axis''' as primary name, cauloid as synonym.
 
−
 
 
−
Proposed def'n: A shoot axis that is part of a gametophore. is_a plant axis, part_of gametophore
 
−
 
 
−
Synonyms: cauloid, gametophyte axis, non-vascular shoot axis (broad, because it can also apply to the seta); participates_in gametophytic phase.
 
−
 
 
−
 
 
−
-Also suggest adding terms for '''gametophore stem''' and '''gametophore branch'''.
 
−
 
 
−
 
 
−
'''gametophore stem''': A stem that is part of a gametophore.
 
−
 
 
−
is_a stem, part_of gametophore, intersection_of gametophore axis
 
−
 
−
 
 
−
'''gametophore branch''': A branch that is part of a gametophore.
 
−
 
 
−
is_a branch, part_of gametophore, intersection_of gametophore axis
 
−
 
 
−
 
 
−
-If the intersection_of relations are asserted in the end user's version (e.g. Amigo), users will see dual parentage.
 
−
 
 
−
 
 
−
-Might want to add complementary term '''vascular shoot axis''': A shoot axis that is part of a vascular shoot system.
 
−
 
 
−
May not be necessary. Don't necessarily think we need to add vascular branch and vascular stem.
 
−
 
 
−
===[https://sourceforge.net/tracker/?func=detail&aid=3185168&group_id=76834&atid=835555 perigonial bract]===
 
−
 
 
−
- The specialized phyllids surrounding the antheridia.
 
−
 
 
−
Ref: Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition (MO definition)
 
−
 
 
−
A bract (PO:0009055) is defined as: A phyllome, usually different in form from the foliage leaves, subtending a reproductive structure. [source: POC:curators] Comment: Often used to refer to what is called here floral bract.
 
−
 
 
−
Proposed def'n: A bract that subtends an antheridium. part_of gametophore, participates in gametophytic phase
 
−
 
 
−
Comment: When an antheridium occurs on a specialized lateral branch of the gametophore, all of the phyllomes on that branch are usually perigonial bracts. If an antheridium occurs on a main axis of the gametophore, usually only the terminal phyllomes are perigonial bracts.
 
−
 
 
−
===[https://sourceforge.net/tracker/?func=detail&aid=3234965&group_id=76834&atid=835555 foot]===
 
−
 
 
−
Moss Ontology definition: The base of the sporophytes in mosses
 
−
 
 
−
'''Proposed name and def.: sporophyte foot:''' A plant organ (?) that is the base of a whole plant in the sporophytic phase, below the seta, that attaches it to the gametophore. (ref: Schofeld)
 
−
 
 
−
Comment: Found in bryophytes. The sprophyte foot serves for both attachment and absorption. The outer portion of the foot is the absorptive haustorium. (From Crum)
 
−
 
 
−
participates_in sporophytic phase, has_part transfer cell, only_in_taxon bryophytes (I know this isn't a clade, will have to create a pseudo-clade).
 
−
 
 
−
- Should we add a term for sporophyte foot haustorium when we deal with portions of plant tissue or is the whole foot the haustorium?
 
−
 
 
−
==Additional organ related moss terms:==
 
−
 
 
−
These were not requested by the Physcomitrella group, but they are related to the terms above and are commonly used to describe mosses, so we should add them now.
 
−
 
 
−
===[https://sourceforge.net/tracker/?func=detail&aid=3185168&group_id=76834&atid=835555 perichaetal bract]===
 
−
 
 
−
'''Proposed def'n:''' A bract that subtends an archegonium. part_of gametophore
 
−
 
 
−
Comment: When an archegonium occurs on a specialized lateral branch of the gametophore, all of the phyllomes on that branch are usually parichaetal bracts. If an archegonium occurs on a main axis of the gametophore, only the terminal phyllomes are usually parichaetal bracts.  The two or three terminal-most perichaetal bracts may fuse to form a gametophytic perianth.
 
−
 
 
−
===[https://sourceforge.net/tracker/?func=detail&aid=3185171&group_id=76834&atid=835555 gametophytic perianth]===
 
−
 
 
−
'''Proposed def'n:'''  A collective phyllome structure that consists of two or more of the most distal parachaetal bracts on a gametophore axis and surround the calyptra (capsule?).
 
  
−
Should it be surrounds the capsule, in case no calyptra is present?
+
===[https://sourceforge.net/tracker/?func=detail&aid=3257063&group_id=76834&atid=835555 Thallus]===
  
−
-has_part parachaetal bract, part_of gametophore, disjoint_from perianth (PO:0009058)
+
From Parihar: A simple vegetative plant body not differentiated into root, stem and leaf, and lacking vascular tissues.
  
−
Comment: The parachaetal bracts may fuse laterally in the gametophytic perianth. The gametophytic perianth is not the same structure as a perianth (PO:0009058) in angiosperms.
+
From Schofeld: A flattened gametophore in which no leaf-like organs dominate the structure.
  
−
===[https://sourceforge.net/tracker/?func=detail&aid=3185175&group_id=76834&atid=835555 seta]===
 
−
-The stalk of a moss sporophyte.
 
  
−
'''Proposed def.:''' A plant axis that that holds up a spore capsule. participates_in sporophytic phase
+
Saying a thallus is a gametophore implies that it is a shoot system and therefore a collective plant structure (CPS). As a CPS, it must have more that one organ. This is not always true for a thallus (sometime they branch, so you could say they have multiple axes, but it is a stretch. Maybe better to classify it as a whole plant.
  
−
Comment: Found in mosses.
 
  
 +
'''alternative proposed definitions:'''
  
−
===antheridiophore and archeginiophore===
+
1) A flat gametophore with no distinct organs.
  
−
These are stalks that hold up the antheridia or archegonia in Marchantiales
+
Comment: A thallus is a whole plant in the gametophytic phase in liverworts and pteridophytes and develops from a short-lived protonema. Roughly two dimensional growth results from division of a single apical cell. Although there are no distinct organs, there may be tissue differentiation and dichotomous branching.
  
−
'''Proposed definitions:'''
+
'''or'''
  
−
'''antheridiophore:''' A plant axis (branch?) that bears antheridia.
+
2) A whole plant in the gametophytic phase that has a flat growth form and no distinct organs.
  
−
participates_in gametophytic phase
+
Comment: A thallus is a gametophyte of liverworts and pteridophytes and develops from a short-lived protonema. Roughly two dimensional growth results from division of a single apical cell. Although there are no distinct organs, there may be tissue differentiation and dichotomous branching.
  
−
Comment: Found in Marchantiales.
 
  
−
'''archeginiophore:''' A plant axis (branch?) that bears archegonia.
+
Add prothallium (for ferns) as a synonym?
−
 
 
−
participates_in gametophytic phase
 
−
 
 
−
Comment: Found in Marchantiales.
 
−
 
 
−
==Cardinal organ parts==
 
−
Terms requested by MO:
 
−
 
 
−
* '''[https://sourceforge.net/tracker/?func=detail&aid=3234979&group_id=76834&atid=835555 calyptra]'''
 
−
 
 
−
Moss Ontology definition: A membranous or hairy cap or hood that forms from the wall of the archegonium and protects the embryonic sporophyte. It is formed from the archegonium by mitotic divisions, and hence it is haploid. Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition and altered from David Cove.
 
−
 
 
−
We also have a request (from PJ) for calyptra, which is part of the fruit in Eucalyptus. That term should be named '''fruit calyptra''' (see below under operculum), and this term should be named '''spore capsule calyptra''', to distinguish them.
 
−
 
 
−
'''Proposed name and def.: spore capsule calyptra:''' A cardinal organ part that develops from cells of the lower part of an archegonium (should we say venter?) and surrounds a sporangium.
 
−
 
 
−
Comment: Found in mosses and pteridophytes. The calyptra ia a membranous or hairy cap or hood composed of gametophytic tissue that protects the embryonic sporophyte within the archegonium. In some species, the calyptra may persist after the sporophyte develops and gets carried upward as the seta elongates.
 
−
 
 
−
participates_in gametophytic phase, develops_from venter or archegonium?
 
−
 
 
−
 
 
−
* '''[https://sourceforge.net/tracker/?func=detail&aid=3234981&group_id=76834&atid=835555 venter]''' 
 
−
 
 
−
This term was not suggested by Moss Ontology, but perhaps we should add it.
 
−
 
 
−
'''proposed def.:''' A cardinal organ part that is the enlarged basal part of an archegonium and has an egg cell located in it.
 
−
 
 
−
part_of archegonium
 
−
 
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3234985&group_id=76834&atid=835555 archegonium neck]'''
 
−
 
 
−
This term was not suggested by Moss Ontology, but perhaps we should add it.
 
−
 
 
−
'''proposed def.:''' A cardinal organ part that is the elongated apica part of an archegonium.
 
−
 
 
−
Comment: Early in development, the neck is occluded by a single row of neck canal cells. At maturity, the neck canal cells disintegrate, creating a canal for the sperm to enter the archegonium.
 
−
 
 
−
part_of archegonium
 
−
 
 
−
(can also add term for neck canal cell when we deal with cells)
 
−
 
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3241725&group_id=76834&atid=835555 base]'''
 
−
 
 
−
'''Proposed name and def.: sporangium base''': A cardinal organ part that is the basal part of a sporangium.
 
−
 
 
−
Comment:  Term used in mosses and other bryophytes (what about pteridophytes?). The sporangium base is the sterile part of the sporangium below the theca. If swollen and distinct from the rest of the sporangium, it is called an apophysis or hypophysis. (ref: Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition)
 
−
 
 
−
part_of sporangium; Synonyms: sporangium neck, apophysis, hypophysis
 
−
 
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3241737&group_id=76834&atid=835555 theca]'''
 
−
 
 
−
Moss Ontology definition: The main body (urn) of a sporangium. Altered from Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition
 
−
 
 
−
We already have the term theca (PO:0009069) to describe paired microsporangia in angiosperms. Maybe we should call that '''anther theca''' and call this term '''sporangium theca:'''.
 
−
 
 
−
'''Proposed name and def.: sporangium theca:''' A cardinal organ part that is the main body of a sporangium and has spores located in it.
 
−
 
 
−
Comment: Term used in mosses and other bryophytes (what about pteridophytes?)
 
−
 
 
−
part_of sporangium
 
−
 
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3241747&group_id=76834&atid=835555 peristome]'''
 
−
 
 
−
Moss Ontology definition: A single or double circle of teeth inside the mouth of a moss sporangium. Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition
 
−
 
 
−
'''proposed definition:''' A cardinal organ part that is a single or double circle of teeth inside a spore capsule mouth.
 
−
 
 
−
Comment: The peristome is located under the operculum, if an operculum is present. Upon maturity of a capsule, the teeth of the peristome open to release the spores.
 
−
 
 
−
part_of sporangium
 
−
 
 
−
*'''peristome tooth'''
 
−
 
 
−
Not requested by Moss Ontology, but should add it.
 
−
 
 
−
'''Proposed def:''' A cardinal organ part that is a single lobe or tooth of a peristome.
 
−
 
 
−
part_of peristome
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3241767&group_id=76834&atid=835555 lid/operculum]'''
 
−
 
 
−
Moss Ontology definition: Either the lid that blocks the capsule mouth or the apical portion of a sporangium that opens during dehiscence. Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition.
 
−
 
 
−
We also have a request (from PJ) for operculum, which is part of the fruit in Eucalyptus. That term should be named fruit operculum, and this term should be named spore capsule operculum, to distinguish them.
 
−
 
 
−
'''Proposed name and def.: spore capsule operculum:''' A cardinal organ part that is the apical part of a spore capsule that separates from the rest of the capsule during dehiscence.
 
−
 
 
−
Comment: Found in mosses. May remain partly attached to the rest of the capsule.
 
−
 
 
−
Synonym: sporangium lid
 
−
 
 
−
part_of sporangium
 
−
 
 
−
===Also add these terms for angiosperms:===
 
−
 
 
−
'''[https://sourceforge.net/tracker/?func=detail&aid=3241802&group_id=76834&atid=835555 fruit operculum]:''' A cardinal organ part that is the apical part of a capsular fruit that separates from the rest of the capsule (the fruit calyptra) during dehiscence. part_of fruit
 
−
 
 
−
Comment: Found in Eucalyptus.
 
−
 
 
−
Is is a cardinal organ part (formed from a single carpel) or collective organ part structure (formed from parts of multiple carpels)?
 
−
 
 
−
'''[https://sourceforge.net/tracker/?func=detail&aid=3241802&group_id=76834&atid=835555 fruit calyptra]:''' A cardinal organ part that is the basal part of a capsular fruit that separates from the fruit operculum during dehiscence. part_of fruit
 
−
 
 
−
Comment: Found in Eucalyptus. The calyptra may remain attached to the plant after the fruit operculum dehisces.
 
−
 
 
−
Question: is the calyptra actually the base of the fruit, or it is an enlarged hypanthium that surrounds the fruit?
 
−
 
 
−
==Other related terms for mosses, not from Moss Ontology==
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3241816&group_id=76834&atid=835555 spore capsule mouth]'''
 
−
 
 
−
'''Proposed definition:''' A plant anatomical space that is the opening on the distal end of a spore capsule.
 
−
 
 
−
Comment: The mouth is formed when the operculum separates from the capsule. The mouth may be covered by a peristome.
 
−
 
 
−
part_of sporangium
 
−
 
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3241820&group_id=76834&atid=835555 epiphram]'''
 
−
 
 
−
Schofeld says it is a "membranelike expansion of the columella covering most of the mouth of the sporangium in Polytrichidae (hair cap mosses)."
 
−
 
 
−
From Crum: "A circular membrane at the tip of the columella to which the peristome teeth of the prolytrichaceae are attached."
 
−
 
 
−
'''Proposed definition:''' A portion of plant tissue that forms a circular membrane extending from a spore capsule collumella and attached to the ends of the peristome teeth that covers a spore capsule mouth.
 
−
 
 
−
Comment: Present in some moss species of the family Polytrichaceae.
 
−
 
 
−
Can we be more specific about what kind of tissue it is?
 
−
 
 
−
 
 
−
*'''[https://sourceforge.net/tracker/?func=detail&aid=3241827&group_id=76834&atid=835555 pseudopodium]'''
 
−
 
 
−
From Crum: "An elongation of the gametophytic axis on which the capsule is borne in Sphagnum and Andreaea."
 
−
 
 
−
From Schofeld: "An elongated mass of leafless gaemtophore tissue that pushes the sporophyte beyond the perichaetial leaves (in Andreaea and Sphagnum)."
 
−
 
 
−
'''Proposed definition:''' A plant axis that is an extension of a gametophore axis on which a spore capsule is borne.
 
−
 
 
−
Comment: Raises the sporophyte above the perichaetial bracts. Found in Sphagnum and Andreaea.
 
−
 
 
−
participates_in sporophytic phase
 
  
 
=Upcoming meetings 2011:=
 
=Upcoming meetings 2011:=
Line 634: Line 389:
 
Authors: Melissa Haendel, Chris Mungall, Alan Ruttenberg, David Osumi-Sutherland and Laurel Cooper (Accepted)
 
Authors: Melissa Haendel, Chris Mungall, Alan Ruttenberg, David Osumi-Sutherland and Laurel Cooper (Accepted)
 
LC is working with the other organizers to develop the workshop plans and a call for papers.
 
LC is working with the other organizers to develop the workshop plans and a call for papers.
 +
 +
[http://www.obofoundry.org/wiki/index.php/Anatomy_Workshop_ICBO_2011 call for papers]
  
 
'''Full-Day Workshops Schedule:'''
 
'''Full-Day Workshops Schedule:'''
Line 639: Line 396:
 
'''July 26 9am-6pm'''  The Ontological Representation of Adverse Events: Working with Multiple Biomedical Ontologies
 
'''July 26 9am-6pm'''  The Ontological Representation of Adverse Events: Working with Multiple Biomedical Ontologies
  
−
'''July 27 8.30am-4pm''' Facilitating Anatomy Ontology Interoperability
+
'''July 27 8.30am-4pm''' Facilitating Anatomy Ontology Interoperability
  
 
'''July 26 6.30pm-9pm'''  Evening Workshop: Common Logic
 
'''July 26 6.30pm-9pm'''  Evening Workshop: Common Logic
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'''July 27 4pm-8pm''' Evening Workshop: Doctoral and Post-Doctoral Consortium
  
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- LC will attend and represent the PO, will submit a short paper/poster for the workshop (deadline April 1st).
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- LC will attend and represent the PO, will submit a short paper/poster for the workshop (deadline April 10th).
  
  

Latest revision as of 16:29, 12 April 2011

POC meeting, Webex Conference Call; Date: Tuesday Mar 29th, 2011 10am (PDT)

In attendance:

POC members: Laurel Cooper (OSU), Ramona Walls (NYBG), Justin Preece (OSU), Justing Elser (OSU), Pankaj Jaiswal (OSU), Marie Alejandra Gandolfo; (Cornell University, Dennis Stevenson (NYBG)

Absent: Barry Smith (University at Buffalo, NY), Chris Mungall (Lawrence Berkeley National Lab)

Collaborators: none


Acceptance of the minutes from the POC_Conf._Call_3-22-11? There were no changes, additions, or deletions.

Issues with the ontology arising during writing:

This section is for questions about the PO that came up while were writing the manuscript. These are issues that need to be addressed by the curators, preferably before publication and the next release.

Rename Plant Structure Ontology (PSO) to Plant Anatomy Ontology (PAO)?

Reason: better reflects the new upper structure, highlights the changes we have done over the past year

PAO is consistent with other anatomical entities in OBO foundry, like HAO.


We agreed to change the name to Plant Anatomy Ontology. Since this name or PAO does not actually occur in the ontology anywhere, and it is just a name for one branch of the PO, changing it is not a problem. Also, the file on the SVN, where the separate versions of the files are stored, the PAO branch file is already called plant_anatomy.obo, so this name is more consistent.

We should check with CM to see if we should change the namespace, which is currently plant_structure to plant_anatomy, and what the ramifications of such a change would be.

This name Plant Structure ontology is used on the PO webpage and in other spots where the individual files are linked to (such as Bioportal)- so it should also change in those places. Will need to be changed on the AmiGO Browser

Use of ontology id's in definitions

We have been inconsistent in where we put ID's for terms from other ontologies that we reference in the PO.

For the top level PSO terms, we have CARO ID's in the definitions, but also have them as xrefs.

For plant cell, we reference GO ID in the comment, but also have it as an xref.


For the top level PAO terms that reference CARO, we should remove the ID from the definition and add it as a definition dbxref. We should put the definition and ID of the CARO term into the comment, like we have done with GO for plant cell.

As a general guideline, whenever we use a definition from another ontology for a term, but alter it to fit PO, we should put the other ontology ID plus POC:curators into the definition dbxrefs. This gives credit to the source of the definition

Note: We should check that the browser will automatically create the hyperlinks, or we can also add them there. We should request CARO to the GO Dbx database, along with SourceForge and PATO.

Does CARO/PATO need to have a website in order to do so? We could use the link to Bioportal

LC: I added a statement and example explaining this to our PO_Developers_Guide.

embryonic plant structure

-Do we want dual parentage for embryonic structures? Should we use intersection_of relations, instead of asserting dual parentage?

-Will the intersection_of relations be displayed by AmiGO? No they are not

-Here is a figure of how it would work, if the is_a relation to the "normal" plant structure were asserted, and the relation to embryonic plant structure were inferred using intersection_of relations, using embryonic apical cell as an example:

Embryonic apical cell1.jpg

pi represents participates_in relation

dotted lines are relations that are inferred by the reasoner.

  • This method defined embryonic plant cell as is_a: embryonic plant structure, intersection_of: is_a plant structure, intersection_of: part_of embryo.

Because the intersection_of relations specify sufficient conditions, any plant cell that has a part_of relation to embryo will be classified as an embryonic plant cell whenever the reasoner is on. Similar relations could be used for other embryonic plant structures.

  • This allows us to classify cells as plant cells, tissues as plant tissues, etc., but still lets them have a relationship to embryonic plant structure, while other structures, like embryo proper, could remain as is_a children of embryonic plant structure.

This is the method specified as the best_practice for OBO foundry (at least orally, if not actually in their principles).


We agreed that it was okay to start using intersection_of relations, and to use them to classify embryonic plant structures.

For each new live release, we will create a version of the plant_ontology file that asserts the relations implied by the reasoner. For the time being, we should do the assertions manually (either in OboEdit, or with a script, which we manually check), to be sure that they are relations we want. This would also normally be done regularly while editing, by using the reasoner.

Do we want to release two versions -- one with implied links asserted and one without -- or should we keep the file without only for curators?

in vitro plant structure

What are the boundaries for in vitro structure?

What about a whole plant or parts thereof that are grown in culture? Suppose someone had an annotation for a leaf from an in vitro grown plant. Where should they put it?

Also, we talked about using derived_from relations for in vitro structures (e.g., cultured cell derived_from plant cell). Do we still want to do that? How to assure that the derives from relations always hold?


We discussed whether or not we want the class for in vitro plant structures to only include plant structures that have not yet fully differentiated into tissues or organs (or whole plants, for that matter). We can add a subclass of cultured callus for "differentiating callus" (if it can be defined correctly).

It was suggested on the current definition could to be changed to reflect the fact that it should only include non-differentiated structures.

LC: This makes no sense at all- where do you draw the line?- we still have not defined the boundaries. I am reopening the SF tracker. Whether or not something is in vitro has nothing to do with whether or not it is differentiated.

Perhaps in vitro structures should be children of their respective whole plant parts (cell, tissue, and embryo). Just like an embryonic plant cell is still a plant cell, an in vitro plant cell is still a plant cell.

Would it be possible to use intersection_of terms to classify structures as in vitro, so they could also be children of their respective whole plant parts, like we did for embryonic plant structures? Would have to have some discriminating character, like "participates_in in vitro growth," which is not currently part of the PO. Might be more practical at this point to use dual parentage.

We will work further on this and discuss this more next week

has_part relation

For more details- please see the POC Technical Issues Page

How will we deal with has_part relation? for this release? for future releases?


We confirmed that the reciprocal part_of and has_part relations were what was actually cause the problem with loading the obo file onto our browser:

-JE tried to load the dev browser with the current plant_ontology.obo file with only one reciprocal part_of/has_part relation, but no other known problems, and it would not load.

-Then he loaded the dev browsers with a file that had only has_part relations but no reciprocals, and it worked fine.

-Still have to test loading it onto beta browser with annotations

Report from JE @ tests and annotations etc:

PJ created some smaller ontology files with has_part relations to test in the beta browser. JE confirmed that they load fine, which means that the has_part relation does not interfere with loading. We still have the issue of how annotations pass through the has_part relations. PJ and JE are working on it with CM.

For the time being, the annotations can be manually assigned to the correct terms, if necessary

For the time being, we can continue to use has_part relations, but we will have to revisit how to deal with them before the next release.

participates_in relation

Need to get these in. Should we make a test file to see if these are going to cause issues?

RW- I have been putting them in the developer's file. Don't seem to interfere with loading. Show up on the dev browser, but need an icon.


Question: If a parent term (e.g., plant gametangium) has a participates_in relation, do we need to specify participates_in relation for all its children (e.g., archegonium and antheridium), or will the reasoner know to apply the relation to the children?

Should not need it for children if it is transitive:

A is_a B, and B participates_in C, then A participates_in C

and

A part_of B, and B participates_in C, then A participates_in C

Answer (from Chris Mungall): participation isn't transitive. (in OboEdit by default)

what you want to say is that a is part of b, and b participates in c, then a participates in c

unfortunately you can't do this in OE yet - use a text editor and add the following line to the declaration for participates_in:

[Typedef]

id: participates_in

holds_over_chain: part_of participates_in


- this gives the reasoner the information that an apical cell participates_in gametophyte phase via the part_of relation

(really this axiom should be in RO, and there should be some mechanism where you can just import it but things are a bit primitive right now)

RW: I did this and it worked.

LC: Should we request this feature on the OBO-Edit tracker?

It is okay to continue to add the participates_in relations to the developers' file. PJ prepared an icon using the letters P-i in green, which we can put on the browser.

Issues arising from last week's meeting:

New definitions for gametangium, micro- and megagametophytes, and sperm and egg cells were accepted. The SF tracker items will be set to pending, so anyone can comment on them for the next few weeks.

Recap of Gametangium, antheridium, archegonium and related terms

Proposed new definitions from last week's meeting:

plant gametangium (PO:0025124): A plant organ that produces one or more gametes that are located in it and is part of a whole plant in the gametophytic phase.

participates_in gametophytic phase, only_in_taxon bryophytes plus pteridophytes plus gymnosperms (=never_in_taxon angiosperms)

Comment: The embryo sac and pollen replace the function of gametangia of producing gametes in gymnosperms (for antheridia) and angiosperms (for both antheridia and archegonia).

-Should not say disjoint_from megagametophyte, because we will define megagametophyte such that archegonium is a part of it (see below).


*Use of "located in" rather than "contained in."

Contained_in is used when an organism has a cavity or space that contains some material object that is not part of it (such as a fetus in a womb).

Located_in is used when one class located in another is also part of the class it is located in.

- We will use located_in for the same reason a human mother's egg is part of the mother rather than contained in the mother. Also, we can put pictures on Plantsystematics.org that show gametangium development, and show how the egg cell derives from one of the same population of cells as the rest of the gametangium.

  • New subsets were added for bryophytes, pteridophytes, and gymnosperms, in addition to the subset for angiosperms. Will put terms in proper subset(s) until we can use the only_in taxon relation.
  • Added new relation participates_in.


This definition of gametangium works for algae. Could add a child term oogonium. Do we want to add a subset for algae? At this point, we don't have any terms specific to algae, but several that apply.


antheridium (PO:0025125): A plant gametangium that produces antheridial sperm cells that are located in it.

LC: note on the dev browser it says: "produces antheridium sperm cells"

Comment: A antheridium has a single outer layer of non-sperm producing cells called the sterile jacket layer and sporagenous cells on the interior. There are no antheridia in seed plants.

only_in_taxon bryophytes plus pteridophytes (or never_in taxon seed plants), add relation sterile jacket layer part_of antheridium


Should add antheridial initial as a synonym of generative cell.


archegonium(PO:0025126): A plant gametangium that produces an archegonial egg cell that is located in it.

Comment: There are no archegonia in angiosperms or Gnetum or Weltwischia.

only_in_taxon bryophytes plus pteridophytes plus gymnosperms (never_in taxon angiosperms, Gnetum and Weltwischia)

Note: there are no examples of unicellular archegonia in the green algae or land plants, so we don't need to worry about it

New terms and proposed definitions from last week's meeting

We should obsolete PO:0020092 megagametophyte and PO:0020091 microgametophyte, and create new terms that can encompass dioicous bryophyte gametophytes as well as the gametophytes in angiosperms. Embryo sac and pollen grain will be children of these terms, as well as archegonial megagatephyte and antheridial microgametophyte.

LC: for us non bryophyte experts dioicous and monoicous


megagametophyte(PO:0025279): A whole plant in the gametophytic phase that produces only egg cells.

Comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. In angiosperms, Gnetum and Weltwischia the megagametophyte is greatly reduced. The megagametophyte in angiosperms is an embryo sac.


microgametophyte (PO:0025280): A whole plant in the gametophytic phase that produces only sperm cells.

Comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In some pteridophytes, microgametophytes develop from microspores. In seed plants the male gametophyte is reduced to a pollen grain.


embryo sac (existing term, PO:0025074): A megagametophyte that is located in an ovule in an ovary.

Comment: Produces an embryo sac egg cell.

develops_from megaspore, only_in_taxon angiosperm


Do we need a separate class for the microgametophytes in Gnetum and Weltwischia? Usually don't use "embryo sac" for these taxa.

For the time being, any annotations for these two genera should just be placed under microgametophyte or megagamethopyte.


pollen: A microgametophyte that is located in a pollen sac.

Comment: Produces pollen sperm cells.

develops_from microspore, only_in_taxon seed plants

-Would pollen grain be a better name for this? Pollen implies all of the pollen grains, collectively.

will add pollen grain as an exact synonym


archegonial megagametophyte: A megagametophyte that has as parts one or more archegonia.

Comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores.

only_in_taxon bryophyte plus pteridophytes


antheridial microgametophyte: A microgametophyte that has as parts one or more antheridia.

comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In some pteridophytes, microgametophytes develop from microspores.

only_in_taxon bryophyte plus pteridophytes

New definitions for egg cells and sperm cells from last week's meeting

archegonial egg cell (PO:0025122): An egg cell that is produced by and located in an archegonium.

only_in_taxon bryophytes plus pteridophytes plus gymnosperms (or never_in taxon angiosperms), part_of archegonium


embryo sac egg cell (PO:0025123): An egg cell that is produced by and located in an embryo sac.

only_in_taxon angiosperm, part_of egg apparatus

For Gnetum and Weltwischia, should just use parent terms (egg cell or sperm cell).


antheridial sperm cell (PO:0025120): A sperm cell that is produced by an antheridium.

only_in_taxon bryophytes plus pteridophytes (or never_in seed plants), part of antheridium


pollen sperm cell (PO:0025121): A sperm cell that is produced by a pollen grain.

Comment: A pollen sperm cell consists of a nucleus without a cell wall.

only_in_taxon seed plants, part_of pollen

New Physcomitrella and related terms

These items were postponed until next week.

Collective plant structures:

vascular and non-vascular shoot systems

The Moss Ontology did not request these terms, but suggest adding them in order to classify shoot systems.

non-vascular shoot system: A shoot system that does not have as part a vascular system (or vascular tissue?).

comment: Does not have any xylem of phloem, but may have other conducting cells, such hydroids or leptoids. Can occur in both the gametophytic and sporophytic phases of non-vascular plants.

subsets for bryophytes and pteridophytes


Could we use the relation "lacks_part"? Then we could define this class using intersection_of relations, which would be better. CL has used this (lack_plasma_membrane_part). Works better in OWL; translates into something like has_part exactly 0 (some ?Y) [need to check this].


Children of non-vascular shoot system will be gametophore (see below) and thallus. If we used the lacks_part relation and intersection_of relations, we could make gameotophore a child of shoot system, and the reasoner would infer it was a non-vascular shoot system.

Can't use participates_in gametophyric phase, because the sporophyte of a bryphyte is also a non-vascular shoot system (since it doesn't have roots or vascular tissue).


vascular shoot system: A shoot system that has as part a vascular system (or vascular tissue?).

comment: Has xylem and/or phloem. Occurs only in the sporophytic phase of vascular plants.

participates_in sporophytic phase, has_part vascular system


If we accept these terms, suggest changing definitions of leaf and non-vascular leaf to "A leaf that is part of a non-vascular/vascular shoot system. This would be better than the current definitions which reference their taxonomy (part of a vascular or non-vascular plant) and would help with reasoning.

root-bourne shoot system (PO:0004544) should be is_a vascular shoot system

gametophore

Definition supplied by Moss Ontology: The leafy moss plant. The gametophore is the adult form of the moss gametophyte and bearer of the sex organs (gametangia). Ref: Reski (1998): Development, genetics and molecular biology of mosses. Botanica Acta 111, 1-15.

Suggest is_a shoot system.

Proposed def.: A non-vascular shoot system that consists of the shoot axes and non-vascular leaves of a plant in the gametophytic phase. participates_in gametophytic phase

Comment: A gametophore is the leafy part of the gametophyte of mosses and leafy liverworts, excluding the protonema. In mosses, gametophores develop from buds that form on the caulonema. Antheridia and archegonia arise on the gametophore.

This will work as long as we can call the shoot system in leafy liverworts a gametophore as well.

gametophore bud

The term "bud" has been requested: Def'n supplied by Moss Ontology: A structure produced by a caulonema and able to develop into a gametophore or a stem that includes an apical cell able to develop into a gametophore. The earliest recognizable stage of gametophore development. Ref: Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition and altered by David Cove

Suggest a new term gametophore bud. This could be a child of bud (PO:0000055: An undeveloped shoot system).

Proposed def'n: A bud that develops into a gametophore.

Comment: Occurs in mosses (and leaf liverworts?). Develops from a caulonema cell in mosses.

participates_in gametophytic phase, has_part shoot axis apical cell

Thallus

From Parihar: A simple vegetative plant body not differentiated into root, stem and leaf, and lacking vascular tissues.

From Schofeld: A flattened gametophore in which no leaf-like organs dominate the structure.


Saying a thallus is a gametophore implies that it is a shoot system and therefore a collective plant structure (CPS). As a CPS, it must have more that one organ. This is not always true for a thallus (sometime they branch, so you could say they have multiple axes, but it is a stretch. Maybe better to classify it as a whole plant.


alternative proposed definitions:

1) A flat gametophore with no distinct organs.

Comment: A thallus is a whole plant in the gametophytic phase in liverworts and pteridophytes and develops from a short-lived protonema. Roughly two dimensional growth results from division of a single apical cell. Although there are no distinct organs, there may be tissue differentiation and dichotomous branching.

or

2) A whole plant in the gametophytic phase that has a flat growth form and no distinct organs.

Comment: A thallus is a gametophyte of liverworts and pteridophytes and develops from a short-lived protonema. Roughly two dimensional growth results from division of a single apical cell. Although there are no distinct organs, there may be tissue differentiation and dichotomous branching.


Add prothallium (for ferns) as a synonym?

Upcoming meetings 2011:

* ICBO 2011 Second International Conference on Biomedical Ontology July 26-30, 2011 Buffalo, New York

ICBO

LC contributed to the workshop proposal "From Fins to Limbs to Leaves: Facilitating anatomy ontology interoperability" Authors: Melissa Haendel, Chris Mungall, Alan Ruttenberg, David Osumi-Sutherland and Laurel Cooper (Accepted) LC is working with the other organizers to develop the workshop plans and a call for papers.

call for papers

Full-Day Workshops Schedule:

July 26 9am-6pm The Ontological Representation of Adverse Events: Working with Multiple Biomedical Ontologies

July 27 8.30am-4pm Facilitating Anatomy Ontology Interoperability

July 26 6.30pm-9pm Evening Workshop: Common Logic

July 27 4pm-8pm Evening Workshop: Doctoral and Post-Doctoral Consortium

- LC will attend and represent the PO, will submit a short paper/poster for the workshop (deadline April 10th).


*Plant Biology 2011, Aug 6-10th, Minneapolis, Minn

Plant Biology 2011

Early-bird registration ends May 13.

Gramene will be putting together a workshop again, focusing on pathways. PJ will present a PO poster.

Abstract deadlines: Your abstract must be submitted by March 11 if you want it to be considered for a minisymposium talk.

For inclusion on the program memory stick and in the program book, abstracts must be submitted by May 27.

TAIR is organizing an Outreach Booth and we are invited to take part.


* International Botanical Congress (IBC2011)

July 23rd-30th 2011, Melbourne, Australia

Registration is open Important dates

Symposium proposal was accepted, 'Bio-Ontologies for the Plant Sciences' under the Genetics, Genomics and Bioinformatics theme.

Dennis, Alejandra, Pankaj and Ramona are planning to attend.

Early bird registration deadline - Extended 1 March 2011 Deadline for registration by presenters 1 March 2011

See IBC 2011 Bio-Ontologies Symposium wiki page for more details

Next meeting scheduled for Tues, Apr. 5th, 2011 at 10am PDT

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