LOX — Lactuca sativa

Summary

LsLOX, on chromosome 6 of garden lettuce (Lactuca sativa), encodes a lipoxygenase, a non-heme iron-containing dioxygenase with linoleate 13S-lipoxygenase activity. The gene is associated with oxylipin and jasmonic acid biosynthesis, the green leaf volatile biosynthetic process, and responses to herbivores, insects, high light intensity, and ozone. It has been linked to anther development and dehiscence, photoperiodic flowering, and triglyceride metabolism. Associations with agronomic traits include nitrate content and transport, seed yield, photosynthetic rate, root thickness, and low-temperature stress response. The encoded protein localises to the chloroplast thylakoid membrane, chloroplast envelope, stromule, apoplast, and stress granules. Studies of related lipoxygenases in other species connect the family to jasmonate-mediated defence, herbivore resistance, and abiotic stress tolerance.