CHS — Oryza sativa Japonica

Summary

OsCHS (OS07G0525900) on rice chromosome 7 encodes a type III polyketide synthase with chalcone/stilbene synthase domains, exhibiting naringenin-chalcone synthase, flavonol synthase, and chalcone isomerase activities, among others. The gene is associated with flavonoid, anthocyanin, and polyketide biosynthesis, as well as pigmentation, pollen wall assembly, and responses to UV light and gravity. It has been linked to traits including grain weight, seed coat color, anthocyanin content, chlorophyll content, starch content, root length, drought tolerance, salt tolerance, heat tolerance, germination rate, flowering time, and lignin content. Studies of related genes in other species connect the family to flavonoid biosynthesis, seed coat pigmentation, UV-B tolerance, and pollen exine development.