HSP70 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0281190 (HSP70) on barley chromosome 3H encodes a heat shock 70 kDa protein, an ATP-dependent protein folding chaperone with ATP hydrolase activity and heat shock protein binding capability. The gene is associated with protein refolding, the ERAD pathway, the unfolded protein response, and responses to heat, stress, viruses, and immune and innate immunity processes. It has also been connected to lipid metabolism and response to thirst. The product localises to the ER chaperone complex, ER lumen, chloroplast membrane, cytoplasm, nucleus, and axonemal central pair projection. Studies of related genes in other species link the HSP70 family to agronomically important traits including heat and drought tolerance, chlorophyll and carotenoid content, spikelet number, water use efficiency, transpiration rate, root and shoot biomass, and heterosis.