PIP1 — Oryza sativa Japonica

Summary

OsPIP1 (OS09G0541000) on rice chromosome 9 encodes an aquaporin-like protein with water channel activity and channel activity, localizing to the membrane and plasmalemma. It is associated with water transport, response to water, and pore formation, as well as protein heterotetramerization and homotetramerization. The gene has been linked to numerous agronomic traits, including grain yield, grain moisture content, drought tolerance and sensitivity, salinity tolerance, cold tolerance, water use efficiency, transpiration rate, stomatal resistance, photosynthetic rate, chlorophyll content, rubisco content, nitrogen content, leaf drying, root volume, days to heading, anthesis time, and floral organ number and identity. Additional associations include endocytosis, secretion, the MAPK cascade, stamen development, and the ERAD pathway. Related genes in other species are associated with arsenite response and biomass.