part_of part of part of root root stele PO:0003012 PO:0020124 根中心柱 (Japanese, exact) PO_GIT:177 plant_anatomy root vascular cylinder (related) Includes the pericycle as the outermost layer of the stele. estela de la ra&#237z (Spanish, exact) A stele (PO:0025197) that is part of a root (PO:0009005). stele