CHS — Phaseolus vulgaris

Summary

PHAVU_002G038900 (PvCHS) on chromosome 2 of French bean encodes a chalcone synthase, a type III polyketide synthase with chalcone/stilbene synthase domains. The enzyme exhibits naringenin-chalcone synthase, chalcone isomerase, dihydroflavanol 4-reductase, flavanone 4-reductase, flavonol synthase, acyltransferase, SUMO transferase, and kinase binding activities. PvCHS is associated with chalcone, polyketide, flavonoid, anthocyanin, isoflavonoid, and phenylpropanoid biosynthesis, as well as regulation of anthocyanin and phenylpropanoid metabolism. It is linked to responses to UV-B, UV, gravity, oxidative stress, and heat acclimation, and to auxin polar transport, sumoylation, and protein synthesis. The gene is associated with seed coat color, anthocyanin content, drought tolerance, salt stress tolerance, nitrogen recycling, root-knot nematode resistance, flowering time, and stomatal opening. It localizes to the cytosol, nucleus, ER, and tonoplast.