HSP70 — Daucus carota subsp. sativus

Summary

DCAR_006667 (DcHSP70) on carrot chromosome 2 encodes a member of the heat shock protein 70 (Hsp70) chaperone family, containing a DnaK domain and ATPase nucleotide-binding domain, with ATP hydrolase activity and protein folding chaperone function. The gene is associated with responses to heat, abscisic acid, and hypoxia, as well as protein refolding, sumoylation, brassinosteroid-mediated signalling, and downregulation of ethylene signalling. It has been linked to traits including photosynthetic rate, stomatal resistance and opening, leaf senescence, flowering time, seed growth, root morphology, stem elongation, and trichome morphology. Associations with chloroplast development, thermotolerance, osmotic stress tolerance, and ROS scavenging have been observed. Studies of related genes in other species link the family to protein import into chloroplasts, seed germination, and ethylene perception.