POC Conf. Call 4-23-13

POC meeting, Webex Conference Call; Date: Tuesday April 23rd, 2013 10am PST/1pm EST

In attendance:

Absent:

accessory branch or accessaory paraclade

Request from JL for the Plant Phenotype project for the term 'accessory branch' or accessory paraclade:

Suggested term and def'n: accessory branch (new PO:ID): A shoot axis (PO:00025029) that develops from a shoot node (PO:0005004) that has produced at least one axillary branch (PO:0006343)

Literature citation: The term 'accessory branch' is used in the description of the different types of phytomers (pg. 2724, top of left column):

"...In both of these phytomer types, a second branch (accessory branch) may later develop between the axillary branch and its subtending leaf (Fig. 1A)." Talbert et al, 1995

This figure is actually referring to an accessory paraclade, not simply an accessory branch.

We have the term paraclade, but it needs to be refined:

Current def'n: paraclade (PO:0004720)- An inflorescence branch (PO:0009081) that ends in an inflorescence that repeats the main inflorescence.

Question: are they both from the same axillary bud meristem (PO:0000232)or is there more than one bud?

Comments: from SF: DWS: Accessory bud is the term used when more than one axillary bud occurs at a node as in many cacti and legumes.

Need to differentiate between the accessory paraclade in the rosette and cauline positions

The term paraclade will be made obsolete and made an exact synonym of inflorescence branch (PO:0009081), since they mean the same thing.

inflorescence branch (PO:0009081): An inflorescence axis (PO:0020122) that is a branch forming from a primary or higher order inflorescence axis.

see this paper for additional information

http://aob.oxfordjournals.org/content/early/2011/03/01/aob.mcr039.full

petal nanoridges

Suggested Definition: Microscopic, often parallel, ridges composed of cutin occurring on the surface of petals. Parent/relationship: part_of petal epidermis (PO:0006041)

Reference: PMID 19959665

These are composed of cutin.

plant cuticle ridge A portion of plant cuticle (PO:000022) that forms a ridge, may be overlayed with epicuticluar wax (PO:0025388).

epicuticular wax PO:0025388

A portion of cuticular wax that forms crystalloids or a smooth film on the exterior of a cuticle. [source: PMID:12467640, PO_Ref:00010]

Comment: Epicuticular waxes may take a variety of forms, such as plates, ribbons, tubes, and rods.

Other Items for discussion

- please see the Items_for_future_meetings page, will be moved here before the meeting