ACO1 — Capsicum annuum

Summary

CaACO1 (T459_11115) on pepper chromosome 4 encodes a protein with aconitase, 4Fe-4S cluster-binding, intramolecular hydroxytransferase, and 3-isopropylmalate dehydratase activities. The gene is associated with the TCA cycle, glyoxylate cycle, citrate and isocitrate metabolism, L-leucine anabolism, and the SAM cycle. It is linked to regulation of salicylic acid-mediated signaling, immune response, regulation of ROS metabolic process, leaf senescence, trichome morphogenesis, and response to iron ion starvation. Associations with ethylene sensitivity, root morphology trait, lateral root development, gravitropic response, salt tolerance, waterlogging stress tolerance, and plant growth have been noted. The protein localizes to mitochondria, chloroplast stroma, plastids, cytosol, plasmalemma, apoplast, plant-type cell wall, plant-type vacuole, and plasmodesmata. Studies of related genes in other species connect the family to fruit shelf-life, seed germination, ethylene biosynthesis, and abiotic stress tolerance.