JAR1 — Capsicum annuum

Summary

T459_21959 (JAR1) on pepper chromosome 8 encodes an indole-3-acetic acid-amido synthetase of the GH3 family, with adenylyltransferase, IAA amido synthetase, and JA-amino synthetase activities. The gene is associated with jasmonic acid metabolism and signaling, cellular auxin homeostasis, anthocyanin metabolism, and regulation of defence responses to bacteria. It has been linked to induced systemic resistance via jasmonic acid/ethylene-dependent pathways, response to mycotoxin, and red/far-red light signaling. Associations include traits such as grain yield, panicle number, flower diameter, fruit length, leaf angle, photoperiod sensitivity, viral disease response, heterosis, photosynthetic ability, and seed viability. Phenotypic links include herbivore defense, chilling tolerance, bacterial resistance, salt stress response, and disease resistance to Fusarium graminearum. Studies of related genes in other species link the family to jasmonoyl-isoleucine biosynthesis, pathogen defense, and light signaling.