Term Information

Accession
PO:0005039
Name
primary thickening meristem
Ontology
plant_anatomy
Synonyms
PTM (exact), collar meristem (exact), meristema de engrosamiento primario (Spanish, exact), 一次 肥厚(膜)分裂組織 (Japanese, exact), meristematic cap (related)
Alternate IDs
None
Definition
A shoot lateral meristem (PO:0006344) that is part of a shoot axis (PO:0025029) and has a parts multiple layers of meristematic cells (PO:0004010) located near the shoot apical meristem (PO:0020148). Source: JSTOR:4354165, ISBN:0471245208
Comment
Contributes to primary thickening of a shoot axis (PO:0025029), adventitious (shoot-borne) root (PO:0000042) formation, and formation of linkages between shot axis (PO:0000039), leaf (PO:0000036), and root (PO:0003011) vascular systems. Contiguous with the shoot apical meristem (PO:0020148) in some species, but not all. Produces more or less distinct vascular bundles (PO:0005020) surrounded by ground tissue (PO:0025059), as opposed to the more or less continuous xylem (PO:0005352) and phloem (PO:0005417) produced by a vascular cambium (PO:0005598). A primary thickening meristem is a multi-layered structure, compared to the single layer of a cambium. Found in many monocotyledons.
Subset
None
Feedback
Comments, changes to terms, or requests for new ontology terms can be made at PO issue tracker on GitHub.

Filter results

Loading...
pending...
Parents of primary thickening meristem (PO:0005039)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
primary thickening meristem [RO:0002202 relation] RO:0002202  peripheral zone (PO:0000225)
primary thickening meristem [BFO:0000050 relation] BFO:0000050  stem (PO:0009047)
primary thickening meristem [is_a relation] is_a  shoot lateral meristem (PO:0006344)

This term has no children.

PO_GIT
437