POL — Oryza sativa Japonica

Summary

Os03g0821300 (POL/XB15) encodes a protein with a PP2C domain and PPM-type phosphatase-like domain, possessing protein serine/threonine phosphatase activity (EC 3.1.3.16) and phospholipid binding. In rice, this gene is associated with cell death, meristem cell maintenance, photomorphogenesis, skotomorphogenesis, phyllome development, and meristem structural organization. It is also associated with retrotransposition, DNA integration, DNA replication, tRNA processing, pectin breakdown, and regulation of intracellular signaling. The protein localizes to the membrane, plasmalemma, nucleus, and mitochondria. Associations with grain size, amylose content, and drought tolerance have been noted. Related genes in other species are linked to shoot and root meristem maintenance, stem cell specification, embryo and vascular development, and suppression of clv1 carpel number phenotypes.