abscission zone PO_GIT:193 zona de absici&#243n (Spanish, exact) A portion of plant tissue (PO:0009007) that has as part a separation layer (PO:0006211) and a protective layer (PO:0006212), and is involved in the abscission (GO:0009838) of a fruit (PO:0009001), flower (PO:0009046), leaf (PO:0025034) or other plant structure (PO:0009011). 離層 (Japanese, exact) PO:0000146 plant_anatomy abscission layer (related) GO:0009838 portion of plant tissue