HSP70 — Sorghum bicolor

Summary

SORBI_3004G263500, designated SbHSP70 (also known as HSP70-17) on sorghum chromosome 4, encodes a heat shock 70 kDa protein family member with ATP-dependent protein folding chaperone activity, adenyl-nucleotide exchange factor activity, and ATP hydrolase activity. The gene is associated with protein folding in the endoplasmic reticulum, the ERAD pathway, the unfolded protein response, detoxification, protein breakdown, programmed cell death, pollen tube growth, and stress responses. It is linked to heat tolerance, thermotolerance, photosynthetic rate, wound response, and abiotic stress responses. The product localizes to the ER lumen, ER chaperone complex, tonoplast, plant-type vacuole, Golgi complex, secretory vesicle, and membrane. Related genes in other species link the family to grain yield, grain shape, spikelet fertility, stem rust and stripe rust tolerance, water use efficiency, and carotenoid content.