LOX2 — Phaseolus vulgaris

Summary

PHAVU_006G016900, designated PvLOX2 on chromosome 6 of French bean (Phaseolus vulgaris), encodes a lipoxygenase enzyme with linoleate 13S-lipoxygenase activity, also annotated for phytoene dehydrogenase, peroxidase, salicylic acid binding, and mRNA cap binding functions. The protein localises to chloroplast thylakoids, stromules, P-bodies, stress granules, and the apoplast. PvLOX2 is associated with jasmonic acid and oxylipin biosynthesis, green leaf volatile production, lipid oxidation, cell redox homeostasis, and responses to herbivores, viruses, fungi, bacteria, and salicylic acid. It has been linked to photoperiod-sensitive flowering, seed yield, embryo development, low temperature stress, root length and thickness, and traits including insect herbivory resistance, aphid resistance, disease resistance, senescence, UV-B tolerance, and root growth. Studies of related genes in other species connect the family to wound response, herbivore defence, green leaf volatile production, and resistance to fungal pathogens and herbivory.