PLD1 — Solanum lycopersicum

Summary

SlPLD1 (SOLYC06G068090.3) on tomato chromosome 6 encodes a phospholipase D family protein with phospholipase D activity, calcium ion binding, and additional molecular functions including GTPase activity, lipid binding, and phosphatidate binding. The gene is associated with phosphatidic acid anabolism, phosphatidylcholine breakdown, membrane breakdown, and reactive oxygen species-mediated programmed cell death. It is linked to fruit abscission, fruit firmness, fruit growth and development, seed yield, germination rate, seedling development, and leaf morphology. Associations also include responses to biotic stress, viral disease, UV light, nitrate, and heavy metals such as lead, as well as hormone sensitivities to ethylene, jasmonic acid, gibberellic acid, and brassinosteroids. The encoded protein localizes to the vacuole, endoplasmic reticulum membrane, chloroplast envelope, and plant-type cell wall. Studies of related genes in other species link the family to drought tolerance, salt tolerance, freezing tolerance, seed quality, and resistance to pathogens including Botrytis cinerea and Magnaporthe oryzae.