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 is associated with lipid carrier activity, lipid binding, and IgE binding, and is linked to phospholipid transfer to membranes, cutin anabolism, cuticle development, lipid transport, plant epidermal cell differentiation, programmed cell death, defense response, and response to thirst. It localizes to the plant-type cell wall, plasmodesma, plasma membrane, Golgi, endosome, TGN, cytosol, and extracellular space. The gene is associated with photosynthetic rate and numerous phenotypes including drought tolerance, cold tolerance, osmotic stress tolerance, cuticle permeability, hypocotyl elongation, shoot development and branching, flower development, pollen tube growth, seed set, gravitropism, and root development. Studies of related genes in other species connect the family to cuticle-cell wall interface integrity, pathogen resistance, salt stress tolerance, yield, and nitrogen use efficiency.