PSBR — Sorghum bicolor

Summary

SORBI_3002G032700, also known as SbPSBR2 or PSBR, encodes the photosystem II 10 kDa polypeptide, chloroplastic, a member of the PSII_PsbR protein family. This gene is associated with sucrose anabolism and breakdown, as well as homeostasis, and its product localizes to the chloroplast thylakoid membrane and the oxygen-evolving complex of photosystem II. In sorghum, SbPSBR2 has been linked to forage yield, sugar content, and salt tolerance (SALTTL). Studies of related genes in other species further connect the family to photosynthetic efficiency and stress responses, though these associations are not yet established for SbPSBR2 itself.