HSP70 — Solanum lycopersicum

Summary

SOLYC03G117630.1, the tomato HSP70 gene on chromosome 3, encodes a heat shock 70 family chaperone with ATP hydrolase activity, ATP binding, heat shock protein binding, and protein folding chaperone functions. In tomato, HSP70 is associated with thermotolerance, drought tolerance, and disease tolerance. The gene has been connected to diverse biological processes including autophagy in response to ER stress, pigment accumulation, flower formation, strigolactone anabolism, and fructose metabolism. It is linked to traits such as flower abortion, amino acid content, photosynthetic rate, chlorophyll content, quantum yield, photochemical quenching, germination rate, and virus resistance. The encoded protein localizes to the ER lumen, ER chaperone complex, chloroplast membrane, cytoplasm, and nucleus. Studies of related genes in other species link the family to similar chaperone and stress-response functions.