HSP70 — Asparagus officinalis

Summary

AoHSP70 (A4U43_C09F2200) on asparagus chromosome 9 encodes a member of the Hsp70 family of molecular chaperones, possessing ATP hydrolase activity, heat shock protein binding, and protein folding chaperone functions. The gene is associated with protein folding in the endoplasmic reticulum, the ERAD pathway, the unfolded protein response, sumoylation, steroidogenesis, and iron-sulfur cluster assembly. It is linked to pollen development and germination, chloroplast development, thermotolerance, heat and osmotic stress tolerance, and ROS scavenging. Associations also include leaf position, trichome morphology, stem elongation, photosynthetic rate, stomatal resistance and opening, leaf senescence, seed growth and development, flowering time, root morphology, abscisic acid sensitivity, and salt stress tolerance. Studies of related genes in other species link the family to chloroplast protein import, ethylene perception, immune response, and traits including seed weight, plant height, chlorophyll content, and net photosynthetic rate.