CHS — Oryza sativa Japonica

Summary

OS05G0212900 (CHS) in rice (Oryza sativa Japonica) on chromosome 5 encodes a type III polyketide synthase with chalcone/stilbene synthase domains, annotated with multiple enzyme activities including naringenin-chalcone synthase, chalcone isomerase, flavonol synthase, and trihydroxystilbene synthase activities. The gene is associated with chalcone, polyketide, flavonol, and anthocyanin biosynthesis, as well as serotonin anabolism, triterpenoid metabolism, pigmentation, pollen wall assembly, and responses to UV light and gravity. It has been linked to traits including seed coat color, anthocyanin content, grain weight, root length, chlorophyll content, starch content, lignin content, drought tolerance, heat tolerance, salt tolerance, flowering time, germination rate, and leaf color. The protein localizes to the cytosol, nucleus, endoplasmic reticulum, and tonoplast. Studies of related genes in other species link the family to flavonoid production, seed coat pigmentation, pollen exine formation, UV-B tolerance, and pathogen response.