CHS — Capsicum annuum

Summary

CaCHS (T459_31255) on pepper chromosome 12 encodes a protein with chalcone/stilbene synthase and polyketide synthase type III domains. The enzyme is annotated with naringenin-chalcone synthase, chalcone isomerase, flavanone 4-reductase, dihydroflavanol 4-reductase, flavonol synthase, tetraketide alpha-pyrone synthase, acyltransferase, and SUMO transferase activities. CaCHS is associated with flavonoid, anthocyanin, chalcone, and polyketide biosynthesis, as well as regulation of phenylpropanoid metabolism, sumoylation, and responses to UV, UV-B, gravity, heat acclimation, and chewing. It localizes to the cytosol, nucleus, endoplasmic reticulum, and tonoplast. The gene is linked to traits including anthocyanin content, photosynthetic rate, stem dry weight and length, flowering time, root morphology, and responses to salt, drought, oxidative stress, and UV light. Associations with male sterility, pollen exine development, and root-knot nematode resistance have also been noted.