LOX — Solanum lycopersicum

Summary

SlLOX, a tomato lipoxygenase gene on chromosome 1, encodes a protein with linoleate 13S-lipoxygenase activity, oxidoreductase activity, and domains characteristic of plant lipoxygenases. It is associated with the lipoxygenase pathway, oxylipin metabolism, and fatty acid oxidation, as well as carotene and zeaxanthin biosynthesis. The protein localises to chloroplast thylakoids, stromules, and stress granules. SlLOX has been linked to salt stress response, wound response, jasmonic acid biosynthesis and accumulation, and defence against herbivory. It is also associated with agronomically important traits including fruit weight, lycopene and carotenoid content, harvest index, photosynthetic rate, plant height, seed yield, and germination rate. Studies of related lipoxygenases in other species connect the family to jasmonate signalling, resistance to fungal pathogens and herbivory, and green leaf volatile production.