HSP70 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.4HG0387610 (HvHSP70) on barley chromosome 4H encodes a heat shock 70 kDa protein family member with ATP-dependent protein folding chaperone activity, heat shock protein binding, and ATP hydrolase activity. The gene is associated with protein folding in the ER, the ERAD pathway, the unfolded protein response, and protein refolding. It is linked to responses to heat, stress, viruses, and immune and innate immunity processes, as well as pollen tube growth and lipid metabolism. Localisation evidence links the product to the ER lumen and chaperone complex, chloroplast membrane, tonoplast, cytoplasm, and nucleus. The gene is also associated with photosynthetic rate. Studies of related genes in other species connect the family to grain yield, spikelet number, plant height, heat and drought tolerance, chlorophyll content, stem and stripe rust responses, and water use efficiency.