HSP70 — Daucus carota subsp. sativus

Summary

DCAR_009836 (DcHSP70) on carrot chromosome 3 encodes a heat shock 70 kDa protein, a chaperone with ATP hydrolase activity that binds ATP and heat shock proteins, and is annotated to protein folding in the endoplasmic reticulum, the ERAD pathway, the unfolded protein response, homologous recombination, and responses to heat, stress, and virus. It is associated with pollen tube growth, thermotolerance, heat stress response, wound response, abiotic stress response, and photosynthetic rate. The protein localises to the ER lumen, ER chaperone complex, chloroplast membrane, tonoplast, Golgi complex, and other compartments. Studies of related genes in other species link the HSP70 family to heat tolerance in tomato, drought and salt stress tolerance in sugar beet, and to traits including seed weight, plant height, chlorophyll content, germination rate, and fruit size.