C4H — Brassica juncea

Summary

BjC4H (BJUB08G46760S) on chromosome B08 of Indian mustard encodes a cytochrome P450 enzyme with trans-cinnamate 4-monooxygenase activity. The encoded protein binds iron and heme, and is associated with lignin metabolism, phenylpropanoid metabolism, anthocyanin anabolism, flavonoid anabolism, ubiquinone anabolism, leaf formation, pigmentation, pollen development, wound response, and response to light stimulus. It localizes to the endoplasmic reticulum, membrane, plasmodesma, Golgi complex, plant-type vacuole, plant-type cell wall, nucleus, and extracellular space. The gene is linked to seed color, leaf color, and anthocyanin content, as well as phenotypes including lignin deposition, male fertility, plant growth, Casparian strip formation, auxin transport, and UV-B protection. Studies of related genes in other species connect it to lignification, dwarfism, altered phenylpropanoid metabolism, and abiotic stress adaptation.