HSP70 — Cucumis sativus

Summary

CsHSP70 (CSA_2G122520) on cucumber chromosome 2 encodes a chloroplast HSP70 chaperone belonging to the Hsp70 family, with ATP hydrolase activity, heat shock protein binding, and protein folding chaperone functions. It is associated with diverse biological processes including upregulation of photosynthesis, protein folding in the ER, polyamine metabolism, secondary metabolite biosynthesis, and response to growth factor. The gene is linked to numerous agronomically important traits such as drought tolerance, chlorophyll content, photosynthetic rate, plant height, stem diameter, leaf senescence, flowering time, seed growth and development trait, root morphology trait, and stomatal resistance. It localizes to the chloroplast stroma, thylakoid, ER lumen, and plastid stroma. Studies of related genes in other species connect the family to chloroplast development, thermotolerance, osmotic stress tolerance, and protein import into chloroplasts.