ACO1 — Capsicum annuum

Summary

CaACO1 (T459_11793) on pepper chromosome 4 encodes a protein with aconitase activity, 3-isopropylmalate dehydratase activity, intramolecular hydroxytransferase activity, lyase activity, and Fe/S binding, belonging to the aconitase/IPM dehydratase family. The gene is associated with citrate and isocitrate metabolism, the S-adenosylmethionine cycle, and methionine metabolism. It is linked to regulation of salicylic acid-mediated signaling, negative regulation of leaf senescence, trichome morphogenesis, immune response, and response to oxidative stress and iron ion starvation. Associations with ethylene sensitivity, root morphology, lateral root development, gravitropic response, salt tolerance, waterlogging stress tolerance, and plant growth have been observed. The protein localizes to mitochondria, chloroplast stroma, plastids, cytosol, plasmodesmata, and the apoplast. Studies of related genes in other species connect the family to fruit shelf-life, ethylene biosynthesis, seed germination, and abiotic stress tolerance.