CHS — Oryza sativa Japonica

Summary

OsCHS (OS07G0525500) on rice chromosome 7 encodes a type III polyketide synthase with chalcone/stilbene synthase domains, annotated with naringenin-chalcone synthase, flavonol synthase, and chalcone isomerase activities, among others. The gene is associated with chalcone, flavonol, polyketide, and anthocyanin biosynthesis, as well as pigmentation, pollen wall assembly, and responses to UV light and gravity. It has been linked to traits including seed coat color, anthocyanin and chlorophyll content, grain weight, root length, drought and salt tolerance, heat tolerance, germination rate, flowering time, and lignin and starch content. Localization evidence connects the product to the cytosol, nucleus, endoplasmic reticulum, and tonoplast. Studies of related genes in other species link the family to sporopollenin biosynthesis, male fertility, and UV-B tolerance.