HSP70 — Oryza sativa Indica Group

Summary

BGIOSGA011005, designated OiHSP70 on Indica rice chromosome 3, encodes an uncharacterized protein of the Hsp70 family, with ATP-dependent protein folding chaperone, heat shock protein binding, protein folding chaperone, ATP hydrolase activity, and ATP binding functions. This gene is associated with protein folding in the endoplasmic reticulum, the ERAD pathway, the unfolded protein response, protein refolding, auxin transport and signaling, pollen development, germination and tube growth, response to heat, stress and virus, amino acid membrane transport, and membrane transport. The product localizes to the ER lumen and chaperone complex, cytoplasm, nucleus, chloroplast membrane, membrane, and axonemal central pair projection. OiHSP70 is linked to agronomic traits including heat tolerance, grain yield per plant, spikelet fertility, spikelet number, plant height, leaf size, root length, relative root length, and photosynthetic rate. Studies of related Hsp70 family members in other species connect the family to grain shape, grain dimensions, and rust resistance.