PO | Classes | AgroPortal

ID	http://purl.obolibrary.org/obo/PO_0005848 http://purl.obolibrary.org/obo/PO_0005848 https://agroportal.lirmm.fr/ontologies/PO/PO_0005848 Loading
Preferred name	secondary xylem
Synonyms	portion of secondary xylem tissue (exact) wood (exact) xilema secundario (Spanish, exact) 二次木部 (Japanese, exact)
Definitions	Secondary xylem develops as part of secondary growth (GO:0080117). Secondary xylem is the wood of gymnosperm and dicot angiosperm trees, shrubs, and lianas. May be organized into axial (PO:0025410) and ray (PO:0025411) systems. Secondary xylem is often part of a shoot axis (PO:0025029) or a root (PO:0009005) but may occur in other organs. Some monocots have a primary thickening meristem (PO:0005039), located near the shoot apical meristem (PO:0020148), that gives the appearance of secondary growth and may produce lignified tissue that appears woody but is not composed of secondary xylem. Tracheary elements in secondary xylem (PO:0000290) have lignified cell walls with secondary thickening and are dead at maturity. A portion of xylem (PO:0005352) tissue that develops from a vascular cambium (PO:0005598).

rdfs:comment	Secondary xylem develops as part of secondary growth (GO:0080117). Secondary xylem is the wood of gymnosperm and dicot angiosperm trees, shrubs, and lianas. May be organized into axial (PO:0025410) and ray (PO:0025411) systems. Secondary xylem is often part of a shoot axis (PO:0025029) or a root (PO:0009005) but may occur in other organs. Some monocots have a primary thickening meristem (PO:0005039), located near the shoot apical meristem (PO:0020148), that gives the appearance of secondary growth and may produce lignified tissue that appears woody but is not composed of secondary xylem. Tracheary elements in secondary xylem (PO:0000290) have lignified cell walls with secondary thickening and are dead at maturity.
rdf:type	http://www.w3.org/2002/07/owl#Class Loading
rdfs:subClassOf	http://purl.obolibrary.org/obo/PO_0005352 Loading http://purl.obolibrary.org/obo/PO_0025409 Loading
rdfs:label	secondary xylem
skos:notation	PO:0005848
obo_purl:IAO_0000115	A portion of xylem (PO:0005352) tissue that develops from a vascular cambium (PO:0005598).
oboinowl_gen:hasExactSynonym	portion of secondary xylem tissue (exact) wood (exact) xilema secundario (Spanish, exact) 二次木部 (Japanese, exact)
oboinowl_gen:hasDbXref	PO_GIT:164 PO_GIT:434
oboinowl_gen:hasOBONamespace	plant_anatomy
oboinowl_gen:id	PO:0005848
oboinowl_gen:inSubset	http://purl.obolibrary.org/obo/po#TraitNet Loading

Subject	Author	Type	Created
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