<?xml version="1.0" encoding="UTF-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:obo_purl="http://purl.obolibrary.org/obo/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:oboinowl_gen="http://www.geneontology.org/formats/oboInOwl#" xmlns:metadata_def="http://data.bioontology.org/metadata/def/" xmlns:ns1="http://data.bioontology.org/rest_backup_mappings/"> <owl:Class rdf:about="http://purl.obolibrary.org/obo/PO_0005848"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/PO_0005352"/> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/PO_0025409"/> <rdfs:label>secondary xylem</rdfs:label> <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.</rdfs:comment> <skos:notation>PO:0005848</skos:notation> <obo_purl:IAO_0000115>A portion of xylem (PO:0005352) tissue that develops from a vascular cambium (PO:0005598).</obo_purl:IAO_0000115> <oboinowl_gen:hasExactSynonym>portion of secondary xylem tissue (exact)</oboinowl_gen:hasExactSynonym> <oboinowl_gen:hasExactSynonym>wood (exact)</oboinowl_gen:hasExactSynonym> <oboinowl_gen:hasExactSynonym>xilema secundario (Spanish, exact)</oboinowl_gen:hasExactSynonym> <oboinowl_gen:hasExactSynonym>二次木部 (Japanese, exact)</oboinowl_gen:hasExactSynonym> <oboinowl_gen:hasDbXref>PO_GIT:164</oboinowl_gen:hasDbXref> <oboinowl_gen:hasDbXref>PO_GIT:434</oboinowl_gen:hasDbXref> <oboinowl_gen:hasOBONamespace>plant_anatomy</oboinowl_gen:hasOBONamespace> <oboinowl_gen:id>PO:0005848</oboinowl_gen:id> <oboinowl_gen:inSubset 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rdf:resource="http://data.bioontology.org/rest_backup_mappings/ee66d1e0-b829-0136-c410-525400026749"/> <metadata_def:mappingRest rdf:resource="http://data.bioontology.org/rest_backup_mappings/47247340-b82b-0136-c610-525400026749"/> <metadata_def:mappingRest rdf:resource="http://data.bioontology.org/rest_backup_mappings/7f9bcde0-b824-0136-bc2f-525400026749"/> <metadata_def:mappingRest rdf:resource="http://data.bioontology.org/rest_backup_mappings/b0eace20-b82d-0136-c9a6-525400026749"/> <metadata_def:mappingRest rdf:resource="http://data.bioontology.org/rest_backup_mappings/ca40dac0-b826-0136-bf91-525400026749"/> <metadata_def:mappingRest rdf:resource="http://data.bioontology.org/rest_backup_mappings/aa842cd0-b82b-0136-c6a6-525400026749"/> <metadata_def:mappingRest rdf:resource="http://data.bioontology.org/rest_backup_mappings/f244ae80-b829-0136-c41e-525400026749"/> <metadata_def:mappingRest 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rdf:resource="http://purl.obolibrary.org/obo/PO_0005848"/> </rdf:Description> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/PO_0004514"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/PO_0005848"/> </rdf:Description> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/PO_0004515"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/PO_0005848"/> </rdf:Description> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/PO_0004516"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/PO_0005848"/> </rdf:Description> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/PO_0004517"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/PO_0005848"/> </rdf:Description> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/PO_0004532"> <ns2:part_of rdf:resource="http://purl.obolibrary.org/obo/PO_0005848"/> <metadata:treeView rdf:resource="http://purl.obolibrary.org/obo/PO_0005848"/> </rdf:Description> 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