TPS5 — Lactuca sativa

Summary

LsTPS5 (gene LSAT_V11C400166380) on lettuce chromosome 4 encodes a protein with trehalose-phosphatase and transglucosylase activities, containing trehalose_PPase and HAD-like domains. It is associated with terpenoid metabolism, trehalose biosynthesis, and responses to heat, abscisic acid, ethylene, and hypoxia. The gene is linked to yield, photosynthetic rate, and tolerance to temperature, oxidative, and abiotic stresses, as well as disease tolerance. Observed associations include thermotolerance, defense against Botrytis cinerea and Pseudomonas syringae, ABA and sugar signaling, seed germination, stomatal development and function, water-use efficiency, and leaf conductance. Additional connections include spider mite resistance, aphid resistance, flowering time, terpene volatile emission, starch accumulation, and carbon allocation. Studies of related genes in other species link the TPS family to trehalose-6-phosphate biosynthesis, carbon utilization, heat tolerance, bacterial resistance, and abiotic stress tolerance.