HSP90 — Solanum lycopersicum

Summary

SOLYC04G081640.3, the tomato HSP90 gene on chromosome 4, encodes an ATP-dependent protein folding chaperone with ATP hydrolase and ATP binding activities, belonging to the Hsp90 family. The product is associated with a wide range of biological processes, including stress response, autophagy, induced systemic resistance, and signaling pathways involving calcium, hydrogen peroxide, and ethylene. It is linked to chlorophyll metabolism, stomatal closure, and the ascorbate-glutathione cycle. Associations with agronomically important traits include drought tolerance, leaf temperature, chlorophyll content, quantum yield, photochemical quenching, root length, root number, lateral root number, and amino acid content. The protein localizes to the ER lumen. Studies of related genes in other species have identified the family as including GRP-94 homologs.