LP2 — Lactuca sativa

Summary

LsLP2 (LP2) on lettuce chromosome 5 encodes a non-specific lipid-transfer protein (nsLTP) belonging to the Plant_nsLTP family, with lipid carrier, nutrient reservoir and IgE-binding activities. The protein is associated with phospholipid transfer to membranes, lipid transport, cutin anabolism and cuticle development, seed trichome elongation, seed development, programmed cell death, and epidermal cell differentiation. It localises to the extracellular space, plasmodesmata, plant-type cell wall, plasma membrane, Golgi, endosome, TGN and cytosol. LP2 is linked to photosynthetic rate, drought tolerance and response, cuticle permeability and integrity, cold tolerance, osmotic stress tolerance, flowering time, flower development, shoot growth and branching, hypocotyl elongation, gravitropism, pollen tube growth, seed set, root development, and longitudinal cell elongation. Studies of related genes in other species connect the family to pathogen resistance, salt stress tolerance, yield, nitrogen use efficiency and clubroot disease resistance.