FD1 — Capsicum annuum

Summary

CaFD1 (T459_32412) on pepper chromosome PGAv.1.6.scaffold798 encodes a ferredoxin family protein with 2Fe-2S cluster binding and oxidoreductase activity, including phytochromobilin:ferredoxin oxidoreductase activity. The gene is associated with photosynthetic electron transport in photosystem I, ferredoxin metabolism, phytochromobilin anabolism, chloroplast-nucleus signaling, and responses to light intensity, high light, and chitin. It has been linked to traits including grain weight, panicle number, tiller number, bacterial blight disease resistance, herbicide sensitivity, flowering time, photosynthetic rate, stomatal complex closure time, and heat, drought, and oxidative stress response. The protein localizes to the chloroplast thylakoid membrane and stroma. Studies of related genes in other species link the family to phytochromobilin biosynthesis, photosynthetic stability, and thermotolerance, as well as immune and antimicrobial responses.