SHD — Solanum tuberosum

Summary

PGSC0003DMG400005573 (StSHD) on potato chromosome 6 encodes a heat shock protein 83, a member of the HSP90 family characterized by Hsp90_N, Hsp90_fam and HATPase_C_sf domains. The gene product is associated with ATP-dependent protein folding chaperone activity and has been linked to temperature stress tolerance and PVY susceptibility in potato. StSHD is associated with diverse biological processes including cellular response to unfolded protein, vesicle organization, base-excision repair, and negative regulation of cellulose anabolism. It localizes to the chloroplast outer membrane, ER lumen, and perinuclear region. The gene is associated with agronomically relevant traits such as reducing sugar content, starch grain synthesis, plant fresh weight, root dry weight, submergence tolerance, and bacterial and viral disease responses. Studies of related genes in other species link the family to salinity tolerance, root biomass, and broad-spectrum disease resistance.