portion of meristem tissue root anlagen PO:0025433 Laurel_Cooper precursor de ra&#237 (Spanish, exact) Only detectable by gene expression, not morphology. May arise in a pericycle (PO:0006203), as for lateral roots in most seed plants, an endodermis (PO:0000252), as for lateral roots in ferns, or from parenchyma cells (PO:0000074) that are part a shoot axis (PO:0025029), in the case of a basal root (PO:0025002) or shoot-borne root (PO:0000042). 2012-02-08T01:00:56Z A portion of meristem tissue (PO:0009013) that is committed to the development of a root primordium (PO:0005029). PO_GIT:427 plant_anatomy 根原基 (Japanese, exact)