CHS — Solanum lycopersicum

Summary

SlCHS (SOLYC01G111070.3) on tomato chromosome 1 encodes a type III polyketide synthase with chalcone/stilbene synthase domains, exhibiting naringenin-chalcone synthase, chalcone isomerase, flavonol synthase, and dihydroflavonol 4-reductase activities. The gene is associated with anthocyanin, flavonoid, and polyketide biosynthesis, as well as pigment accumulation, pollen exine development, and male sterility. It has been linked to fruit firmness, lycopene, neoxanthin, and chlorophyll content, along with photosynthetic rate, stomatal resistance, and UV light sensitivity. Associations also include root morphology, flowering time, drought tolerance, salt stress tolerance, and responses to oxidative stress and pathogens. The protein localizes to the cytosol, nucleus, endoplasmic reticulum, and tonoplast. Studies of related genes in other species connect the family to flavonol biosynthesis, seed coat pigmentation, and UV-B sensitivity.