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
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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