Planteome: Term Details for "protoxylem" (PO:0000272)

Accession: PO:0000272
Name: protoxylem
Ontology: plant_anatomy
Synonyms: portion of protoxylem tissue (exact), protoxilema (Spanish, exact), 原生木（質）部 (Japanese, exact)
Alternate IDs: None
Definition: A portion of primary xylem (PO:0000272) tissue that has as part one or more protoxylem tracheary elements (PO:0025575) embedded in parenchyma (PO:0005421) tissue. Source: ISBN:0471738433, POC:Laurel_Cooper, ISBN:047125208
Comment: Develops while the vascular tissue (PO:0009015) is still elongating. When protoxylem tracheary elements (PO:0025575) are destroyed they may become obliterated by surrounding parenchyma cells (PO:0000074). Protoxylem has smaller elements than the metaxylem (PO:0000372).
Subset: None
Related: Link to all annotated objects annotated to protoxylem.; Link to all direct and indirect annotations to protoxylem.; Link to all direct and indirect annotations download (limited to first 10,000) for protoxylem.
Feedback: Comments, changes to terms, or requests for new ontology terms can be made at PO issue tracker on GitHub.

subject	relation	object
protoxylem	is_a	primary xylem (PO:0005849)

subject	relation	object
mesarch protoxylem (PO:0025553)	is_a	protoxylem
protoxylem tracheary element (PO:0025575)	BFO:0000050	protoxylem
endarch protoxylem (PO:0025557)	is_a	protoxylem
exarch protoxylem (PO:0025554)	is_a	protoxylem
centarch protoxylem (PO:0025552)	is_a	protoxylem