xylem pole pericycle cell A pericycle cell that is adjacent to the protoxylem of a vascular bundle. Xylem pole pericycle cells are cells in the pericycle that are adjacent to the protoxylem pole of a vascular bundle. Pericycle cells that are adjacent to other xylem cells in the vascular bundle are not considered xylem pole pericycle cells. Xylem pole pericycle cells may retain some meristematic activity and are the site of lateral root initiation. 木質部孔鞘細胞 (Japanese, exact) 2011-02-02T11:52:34Z PO:0000064 c&#233lula del polo xilem&#225tico del periciclo (Spanish, exact) PO_GIT:229 rwalls plant_anatomy pericycle cell