PIP1 — Zea mays

Summary

ZmPIP1 (ZM00001EB306400) on maize chromosome 7 encodes an aquaporin PIP2-6 protein with channel activity and water channel activity, belonging to the major intrinsic protein (MIP) family. It is associated with water transport, C4 photosynthesis, nitrate import, stomatal opening, and lipid transport, and localizes to the plasma membrane. The gene has been connected to numerous agronomically important traits including grain yield, grain weight, plant height, root length and dry weight, leaf relative water content, water use efficiency, transpiration rate, canopy temperature depression, drought tolerance, aluminum tolerance, salinity tolerance, salt response, chlorophyll content, quantum yield, leaf elongation rate, leaf water potential, turgor pressure, abscisic acid content, and nitrate uptake. It is also linked to pathways for arsenic uptake and detoxification, and responses to heavy metals and abiotic stresses. Related genes in other species support these associations.