CHS — Solanum tuberosum

Summary

PGSC0003DMG400001635 (StCHS, CHS) on potato chromosome 1 encodes a type III polyketide synthase with chalcone/stilbene synthase domains, annotated with naringenin-chalcone synthase, chalcone isomerase, flavanone 4-reductase, dihydroflavanol 4-reductase, flavonol synthase, tetraketide alpha-pyrone synthase, acyltransferase, SUMO transferase, and SUMO binding activities. The gene is associated with chalcone and polyketide anabolism, flavonoid and anthocyanin metabolism, pigmentation, pollen wall assembly, response to UV and freezing, auxin polar transport, cell wall thickening, sterol homeostasis, and sucrose metabolism. It localizes to the cytosol, nucleus, ER, and tonoplast. Associations include petal and leaf color, anthocyanin content, amylose and carbohydrate content, photosynthetic rate, respiration rate, flowering time, root morphology, stomatal opening, and responses to UV, salt, drought, oxidative stress, and root-knot nematodes. Studies of related genes in other species link the family to pollen exine development, male fertility, sporopollenin biosynthesis, seed coat pigmentation, and fruit color.