exarch protoxylem

Term Information

Accession
PO:0025554
Aspect
plant anatomy
Synonyms
exact: protoxilema exarco (Spanish)
exact: 外原型原生木部 (Japanese)
Definition
A portion of protoxylem (PO:0000272) tissue in which the maturation of primary xylem (PO:0005849) progresses centripetally, the oldest elements (protoxylem) are farthest from the center of the plant axis (PO:0025004). [source: ISBN:0471245208, POC:Laurel_Cooper]
Comment
None

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