CHS — Capsicum annuum

Summary

CaCHS (T459_31254) on pepper chromosome 12 encodes a protein with chalcone/stilbene synthase, polyketide synthase type III, and thiolase-like domains, annotated with naringenin-chalcone synthase, chalcone isomerase, flavanone 4-reductase, flavonol synthase, and SUMO transferase activities. The gene is associated with chalcone, polyketide, flavonoid, anthocyanin, and flavonol biosynthesis, as well as regulation of phenylpropanoid and anthocyanin metabolism, response to UV and UV-B, heat acclimation, auxin polar transport, sumoylation, and sporulation. It localises to the cytosol, nucleus, ER, and tonoplast. CaCHS is linked to traits including anthocyanin content, stem dry weight and length, photosynthetic and respiration rates, flowering time, root morphology, UV light sensitivity, stomatal opening, and salt and oxidative stress tolerance, as well as phenotypes such as male sterility, pollen exine development, flavonoid and proanthocyanidin biosynthesis, and drought and nitrogen stress tolerance.