plant axis tuber 2012-11-20T18:35:45Z A plant axis (PO:0025004) that is radially enlarged. Functions in storage of photosynthate metabolites. May develop from a branch (PO:0025073) or a root (PO:0009005). If you are annotating to tuber, you should pick the more specific child term: shoot axis tuber (PO:0004543) or tuberous root tuber (PO:0025476). Laurel_Cooper PO:0025522 PO_GIT:127 plant_anatomy 塊茎 (Japanese, exact)