cell death stage of secondary xylem secondary xylem parenchyma cell death stage of secondary xylem A cell death stage of secondary xylem (PO:0025466) that occurs during the interval between the last cell death of a tracheary element (PO:0000290) or non-septate xylem fiber cell (PO:0000274) and the last cell death in a portion of secondary xylem (PO:0005848). etapa de muerte de las c&#233lulas parenquim&#225ticas del xilema secundario (Spanish, exact) PO_GIT:447 rwalls plant_structure_development_stage During this stage, the secondary xylem parenchyma cells (PO:0004525) and septate xylem fiber cells (septate fiber tracheid, PO:0025419, and septate libriform fiber cell, PO:0025420) of a portion of secondary xylem (PO:0005848) undergo cell death (GO:0008219). Succeeds a tracheary element death stage of secondary xylem (PO:0025467). Once all cells in portion of secondary xylem are dead, it transitions from sapwood (PO:0004513) to heartwood (PO:0004512), and secondary xylem development ends. PO:0025468 二次木部柔組織細胞死期 (Japanese, exact) 2012-03-14T02:07:50Z