LP2 — Lactuca sativa

Summary

LsLP2 (LP2) on chromosome 1 of garden lettuce encodes a non-specific lipid transfer protein (nsLTP) belonging to the bifunctional inhibitor/LTP/seed storage superfamily. The protein exhibits lipid carrier, nutrient reservoir, and IgE binding activities, and is associated with lipid transport, phospholipid transfer to membranes, cutin anabolism, cuticle development, seed trichome elongation, seed development, programmed cell death, and digestion. It localizes to the plant-type cell wall, plasmodesma, plasma membrane, endosome, Golgi, and cytosol. The gene is linked to photosynthetic rate, drought tolerance, cold tolerance, osmotic stress tolerance, flowering time, shoot development, root development, cuticle permeability, gravitropism, hypocotyl elongation, pollen tube growth, seed set, and longitudinal cell elongation. Studies of related genes in other species connect the family to pathogen resistance, salt stress tolerance, yield, and nitrogen use efficiency.