HSP22 — Pisum sativum

Summary

PsHSP22 (PSAT6G112800) on garden pea chromosome 6LG2 encodes a small heat shock protein (HSP20 family) with a chaperone domain and is annotated as a protein folding chaperone. It is associated with responses to heat, hydrogen peroxide, hypoxia, and salinity, as well as energy homeostasis, protein oligomerization, embryogenesis, seed development, and general homeostasis. The protein localizes to the cytoplasm and endoplasmic reticulum. Phenotype associations include heat tolerance and heat acclimation. Studies of related genes in other species link the HSP20 family to seed protein content, germination rate, seed maturation, chlorophyll content, and high temperature stress response, though these connections are not yet established in pea.