CHS — Oryza sativa Japonica

Summary

OsCHS (OS07G0214900) encodes a protein with chalcone/stilbene synthase and polyketide synthase type-III domains, and exhibits naringenin-chalcone synthase, flavonol synthase, flavanone 4-reductase, dihydroflavanol 4-reductase, tetraketide alpha-pyrone synthase, chalcone isomerase, SUMO transferase, and acyltransferase activities. In rice, OsCHS is associated with chalcone, polyketide, flavonol, and anthocyanin biosynthesis, as well as serotonin and triterpenoid metabolism, pigmentation, pollen wall assembly, response to UV, auxin polar transport, and double fertilization. The gene is linked to grain weight, starch and monosaccharide content, seed coat color, leaf color, lignin content, root length, chlorophyll content, drought tolerance, heat tolerance, salt tolerance, germination rate, flowering time, and stomatal opening. Studies of related genes in other species connect the family to flavonoid production, seed coat pigmentation, pollen exine development, UV-B tolerance, and pathogen response.