PSBA — Brassica juncea

Summary

BJUB05G58860S (symbol PSBA, also known as BjPSBA) encodes a protein belonging to the PSII_D1 domain family, which includes the D1/D2, Photo_RC_L/M_CS, Photo_RC_L/M, and Photo_II_D1/D2_sf domains. The gene product possesses oxidoreductase activity acting on diphenols and related substances with oxygen as acceptor, oxygen-evolving activity, chlorophyll binding, electron transfer activity, and iron binding. PSBA is localized to the chloroplast thylakoid membrane as part of photosystem II. It is associated with photosynthetic electron transport in photosystem II, photoprotection, chlorophyll fluorescence, chlorophyll anabolism, digestion, and response to herbicide. The gene has been linked to traits including chlorophyll content, flavonoid content, stomatal opening, and salt tolerance. Studies of related genes in other species connect the PSBA family to leaf temperature regulation.