POC Conf. Call 9-15-10

POC meeting, Webex Conference Call; Date: Sept 15th, 2010 10am (PDT)

In attendance:

POC members:

Absent:

Collaborators: none

Acceptance of the minutes from the 9-8-10 meeting?

Status and Update of Progress: PO Release

Responses, as of 9/8/2010:

From Paula Rudall (Kew)

1. Flower; PO: 0009046 [A heterosporangiate strobilus, typically consisting of androecium, gynoecium, usually surrounded by a perianth and borne on an axis or receptacle. ]

Does the definition make sense? There is no mention of determinacy, which is an important defining feature of the flower. I would prefer "bisexual" to "heterosporangiate", but not all flowers are bisexual (or heterosprangiate). The flower is notoriously difficult to define. Bateman et al. (2006: J Exp Bot 57: 3471-3503) discussed earlier definitions, and suggested the following: '. . . a determinate axis terminating in megasporangia that are surrounded by microsporangia and are collectively subtended by at least one sterile laminar organ'

Is it appropriate for all plants (not just angiosperms)? Not really, because the terms androecium and gynoecium are applied only to angiosperms. Flowers are not necessarily restricted to angiosperms.

Those present felt that the current definition of flower was not acceptable (it is inaccurate), and that we needed to come up with a new working definition before the release.

PROPOSED DEFINITION: A determinate shoot system that has as part at least one carpel or at least one stamen and does not contain any other determinate shoot system as a part. Comment: may be have as part one or more petals, sepals or tepals.

Child of shoot system

Also note that we need to add a inflorescence has_part flower (can't use flower part_of inflorescence, because not all flowers are part of an inflorescence). RW opened a SF tracker for this term flower

2. Collective phyllome structure; PO:0052023 [A collective plant structure that consists of two or more phyllomes originating from the same node or from one or more adjacent nodes with compressed internodes.]

Does the definition make sense? It is not clear to me why the word collective occurs in both the term and the definition. It seems rather a strange term; at first I couldn't see what it would be used for, but when I found the discussion (e.g. the definition of the androecium as "A collective phyllome structure composed of two or more stamens") it made more sense. However, I'm not sure that this term needs to be defined separately.

Is it appropriate for all plants (not just angiosperms)? yes

We agreed to keep collective phyllome structure as it is for this release.

3. Central cell; PO: 0020090 [The largest cell of the mature embryo sac. Contains two polar nuclei, which (after double fertilization) will develop into the endosperm.]

Does the definition make sense? Yes, but see below.

Is it appropriate for all plants (not just angiosperms)? No; in a gymnosperm archegonium, the central cell is the cell that will divide to form the ventral canal cell and the egg cell (see Rudall 2006, Bioessays 28: 1067-1071).

This will be an issue when we add terms for gymnosperms, so we will address it in the next release.

From Elena Kramer (Harvard)

Does the definition of each term make sense?

collective tepal structure PO:0025021

This seems like an odd  term that's never commonly used. I realize that the difficulty is finding a parallel collective concept for calyx and corolla. What if the first level under perianth was differentiated perianth and undifferentiated perianth. Then the first option would break down to calyx-->sepal and corolla-->petal while the second would just break down to tepal. I realize that structure is still not entirely parallel but at least it doesn't introduce terms that will never be used elsewhere.

The consensus was that the term undifferentiated perianth is not in use either, so it would better to keep collective tepal structure.

hypanthium PO:0009065

I honestly wasn't sure what "cardinal" meant in the definition "A cup- or tube-shaped cardinal organ part". Does that refer to it being in the outer whorl?

We noted that both Kramer and Rudall appeared to misunderstand the genus/differentia form that uses the parent term in the definitions (comment on use of collective by Rudall and use of cardinal by Kramer). Perhaps we should add a glossary, FAQ link, or some other type of instructions to the web browser, to help novice users. There is some information available on the documentation page, but it inadequate, and it is not obvious when you are browsing the ontology.

The meaning of the term cardinal is described in the comment for cardinal organ part. Perhaps there should be a cross-reference to it in the child terms.

Is it appropriate for all plants (not just angiosperms)? Since I only looked at floral terms, no, they are just appropriate for angiosperms, although the micro/megasporophyll definitions would be comparable for gymnosperms.

Coverage: Are the terms included under the node(s) you are reviewing (its descendent terms) sufficient?

Well, we work on petal spurs and they were missing under petal, so that would be a big problem for describing Aquilegia. Also, I wondered if there was some way to incorporate corolla tubes vs. free petals, inferior vs. superior ovaries, and the phenomenon of common primordia (that last one would only apply to the development ontology).

A spur is a part of a petal, so we could add a term for it under cardinal organ part. The other terms are phenotypic descriptors, and could be annotated using a combination of PO and PATO terms.

From Farshid Ahrestani (Columbia, TraitNet)

There is a possibility that we (TraitNet and partners) may incorporate a slim-version of the PO for a Plant Functional Trait ontology that we are developing.

The following terms could be included in the ontology, depending on their relevance and importance:

Corm - Maybe as a synonym of stem.

Spine

Podaria (which is synonym to Tubercle)

Pneumatophore

Stele

Diaspore

Cone

Sorus

Shoot - Subclasses of the shoot are included, such as shoot apex and shoot axis

Tendril

Wood - Although sapwood, late wood, early wood, heartwood present

- Seed coat is present, but is part-of of Plant tissue. Is that correct?

- Pollen Tube (and maybe others at that same level in the ontology) could do with a parent.

By slims, they are referring to something similar to a GO slim (based on conversations with Ramona), which they would develop using selected terms from the PO.

Shoot is a synonym of shoot system, and wood is a synonym of secondary xylem. Other terms can be added for the next release. Can fix seed coat part_of portion of plant tissue for this release.

Laurel will follow-up with Rich Zobel (Root terms) and Naama Menda (tuber terms), Alejandra will follow up with Gar Rothwell

Annotations that have no term associated with them

-Laurel and Ramona compiled a list of the 10 terms that have been obsoleted and how many annotations that are associated with them.

There were only 10 and only 5 of them are problematic: floral bud, gametophyte, leaf whorl, seedling and sporophyte. File:Obseleted terms (LC 8-10-10).pdf

In progress....

Laurel sent a spreadsheet to TAIR and Gramene listing the annotations that were affected on 8/13/10, with our recommendations or suggestions on where they should be moved to.

A. TAIR - 8/13/10 message sent to Donghui, Kate and Tanya:

"The main issues are with the annotations associated with the following PO terms which were obsoleted in the beta version:

PO:0009003: sporophyte 1 (from: po_anatomy_gene_arabidopsis_tair.assoc)

PO:0000056: floral bud 54: (from: po_anatomy_gene_arabidopsis_tair.assoc)

PO:0008037: seedling 16 (from po_anatomy_gene_arabidopsis_tair.assoc)

The first three will need to be looked at to determine where to best put them. We have put our recommendations or suggestions on the spreadsheet

PO:0008034: leaf whorl 15,802: (from po_anatomy_gene_arabidopsis_tair.assoc) These ones are pretty straightforward- we recommend to move them all to the new term collective leaf structure PO:0025022

Spreadsheet: File:TAIR dangling annotations (LC 8-13-10).pdf

• Comments:

Response from Tanya Berardini@ TAIR 8/16/10:

"Hi Laurel,

Thanks for the update and for the spreadsheet. We should be able to handle the transition for the obsoleted terms pretty easily as we already have a mechanism set up for automated transfer of annotations from an obsolete term to a replacement term, if that replacement term is suggested in the OBO stanza.

Comments:

(1) sporophyte - suggestions are fine, annotations should move if replacement term is in OBO stanza (see below:)

(2) floral bud

Why was 'floral bud' removed as a parent term for both 'axillary floral bud' and 'terminal floral bud'? I'm not sure I understand why this potentially useful grouping term was deemed no longer useful. I am not sure that we'll be able to move all our annotations to the more specific terms as the publications do not always specify whether axillary or terminal flower buds were used or whether the DNA/RNA/protein sample was obtained from a mixture of both.

(3) seedling - suggestions are fine, annotations should move if replacement term is in OBO stanza

(4) leaf whorl - suggestion is fine, annotations should move if replacement term is in OBO stanza

When do you anticipate the public release of the new version of the PO vocabularies? We will monitor the annotations that we have to the terms that you highlighted to make sure that the appropriate transfers and updates occur.

Thank you for your help,

Tanya"

Laurel replied and provided more explanation and invited her to review that section and possibly attend the conference call.

B. Gramene - 8/13/10 message sent to gramene@gramene.org contact email. Ken replied and said that Pankaj was the best person to look at these.

File:Gramene dangling annotations (LC 8-13-10).pdf

C. Issues Arising:

*Changes to the annotation files:

- what is the mechanism for making these changes? Are we doing them here or is TAIR/Gramene going to send us new files?

See comments from CM about replacing the terms: On Aug 17, 2010, at 6:51 AM, Walls, Ramona begin_of_the_skype_highlighting     end_of_the_skype_highlighting begin_of_the_skype_highlighting end_of_the_skype_highlighting wrote: > We have put the replacement terms in the obo stanza as "consider" terms for all of these (check on this)

>>CM: note that where the replacement is clear you can use replaced_by - this means the replacement can happen automatically without a human having to make a choice

- Is there a script for making the changes? Does this apply to the annotation files or just the OBO files?

*sporphytic phase and gametophytic phase

> RW: in several cases (sporphytic phase for sporophyte, gametophytic phase for gametophyte, and seedling growth stage for seedling), we cannot currently add the 'consider' term to the po_anatomy_test file because the consider terms are in a different file (po_temporal_test). Probably the easiest way to solve this would be to merge the two files before the live release.

*Do we want to do the merge before the release?? it seems like this should have been done before sending out to the reviewers. We do not want to delay the process any further- What are other options?

CM: As an interim strategy you could embed the id in the comments using a standard syntax, then parse the tags out once you merge files.

What about a "bridge file" We have discussed this in the past but have not implemented it.

*floral bud

> > 2. Based on the response from TAIR (see above), we may want to reconsider obsoleting the term floral bud. Perhaps keeping this term for users is more important that getting rid of it to solve an ontological problem (term have multiple parentage).

CM: Multiple Inheritance isn't an ontological problem, it's an engineering problem for you, in that manually maintaining MI is tedious and error prone. You should move to towards using the reasoner to infer all these, but in the meantime your asserted links /must/ reflect the biology, which in many cases means asserting MI.

Those present at the meeting felt it was preferable to keep the current structure for floral bud. We were concerned about instituting a policy of changing the ontology here and there to fit the convenience of individual users, unless the change is biologically appropriate. Laurel will follow up with TAIR to see if they can work with the new structure for floral bud, and also to find out the status of their annotation files.

Barry described using axioms for terms with multiple inheritance, rather than using asserted relations. Not certain how this translates in OboEdit -- perhaps through the use of intersection of relations. There was a question of whether or not annotations would be passed on (to parent terms) using axiomatic relations -- no one knew the answer. Justin P. raised the issue that we should be mindful as to whether or not the utilities we use (like Amigo) will be able to support our future analysis needs (for example, implied relations do not show up in the Amigo browser).

D. Resolution:

We still need to find out (maybe from Justin E. or Pankaj) what the procedure is for updating annotations before the release.

A. Feedback Box:

New link to feedback box on beta site- emails will go to po-discuss

• Laurel and Ramona are working on some changes to customize this with additional fields and boxes for more directed responses

Note: It would be better if the feedback box could fill in the relative link automatically from the page. Is this possible?? "eg: Refer to URL: http://www.plantontology.org/index.html "

Apparently this got broken when it was moved to the new spot on the beta browser. JE is looking at getting it to capture the url of the current page being viewed.

No new news on this to report.

Announcement for Plant Sciences Bulletin: Note: that this is not for the beta version but the live version due to the timing. Sent to PJ for review 8/12/10

Dennis will also send this to the BSA for posting on their website- but should wait to do this until after the release comes out~ mid September.

Ramona will follow up with Dennis and see what the status of this is.