psbA — Zea mays

Summary

ZM00001EB439910, the maize psbA gene on chromosome scaf_250, encodes a protein of the PSII_D1 family, a core component of photosystem II. This protein is associated with oxidoreductase activity acting on diphenols, oxygen-evolving activity, chlorophyll binding, electron transfer activity, and iron binding, and localises to the photosystem II complex in the chloroplast thylakoid membrane. The gene is associated with a wide range of biological processes, including C4 photosynthesis, light absorption, plastid gene expression, cellular respiration, nitrogen fixation, and ribosome hibernation. It has been linked to several agronomically important traits, such as net photosynthetic rate, quantum yield, chlorophyll content, water use efficiency, drought tolerance, leaf colour and curling, cytoplasmic male sterility, and heterosis. Related genes in other species are also associated with grain protein content.