SHD — Solanum lycopersicum

Summary

SlSHD (SOLYC04G081570.3) on tomato chromosome 4 encodes a member of the heat shock protein 90 family, containing Hsp90 and HATPase domains, and is annotated with ATP-dependent protein folding chaperone activity. In tomato, SlSHD is associated with responses to yellow leaf curl virus, salinity tolerance, heavy metal tolerance, root biomass, and developmental regulation. The gene has been linked to diverse processes including cellular response to unfolded protein, vesicle organization, respiratory burst involved in defense response, and mitochondrial protein import. Associations extend to traits such as floral organ morphology, fruit maturation, seed set, leaf water potential, temperature stress response, bacterial and viral disease responses, submergence tolerance, and gibberellin biosynthesis. Studies of related genes in other species connect the family to thermotolerance, broad-spectrum disease resistance, embryo development, and plastid function.