psbA — Zea mays

Summary

ZM00001EB442990, designated psbA in maize (Zea mays) on chromosome scaf_675, encodes a protein of the PSII_D1 family with oxidoreductase activity acting on diphenols and related substances as donors, oxygen as acceptor, and oxygen-evolving, chlorophyll-binding, electron-transfer and iron-binding activities. The protein localises to the photosystem II complex in the chloroplast thylakoid membrane and plastid. The gene is associated with C4 photosynthesis, light absorption, plastid gene expression, cellular respiration, nitrogen fixation, membrane biogenesis, ribosome hibernation, and carbohydrate, hormone, RNA and DNA anabolism. It has been linked to traits including net photosynthetic rate, quantum yield, chlorophyll content, water use efficiency, drought tolerance, leaf colour and curling, stomatal resistance, respiration rate, carbohydrate and protein content, heterosis, and cytoplasmic male sterility. Related genes in other species are associated with grain protein content.