HSC-2 — Oryza sativa Indica Group

Summary

BGIOSGA035738 (HSC-2, also known as OiHSP70) on chromosome 11 of Indica rice encodes a heat shock 70 family chaperone with ATP hydrolase activity and ATP-dependent protein folding chaperone function. The gene is associated with protein folding in the endoplasmic reticulum, the ERAD pathway, the unfolded protein response, and auxin transport and signaling. It has been linked to pollen development, germination, and tube growth, as well as response to heat, stress, and virus. Associations with agronomic traits include heat tolerance, grain yield per plant, spikelet fertility, spikelet number, plant height, leaf size, root length, and photosynthetic rate. The protein localizes to the ER lumen, ER chaperone complex, cytoplasm, nucleus, membrane, and chloroplast membrane. Studies of related genes in other species link the family to drought tolerance, grain shape, grain width and length, and net photosynthetic rate.