HSP70 — Solanum lycopersicum

Summary

SlHSP70 (SOLYC11G013660.1) on tomato chromosome 11 encodes a protein belonging to the UPF0220 domain family. The gene is associated with a wide range of biological processes including heat dissipation, thermomorphogenesis, autophagy in response to ER stress, pigment accumulation, flower formation, fructose metabolism, and membrane bending. It has been linked to several agronomically important traits such as fruit size, drought tolerance, photosynthetic rate, chlorophyll content, quantum yield, stomatal resistance, leaf water potential, leaf trichome density, germination rate, and flower abortion. The gene product localizes to cellular membranes and is associated with processes including endosome-to-vacuole transport via the MVB sorting pathway and nuclear export. Studies of related genes in other species link the family to seed weight, plant height, root biomass, and hydrogen peroxide content.