Lipid transfer protein involved in seed and ovule maturation and development, probably by regulating the fatty acids homeostasis during suberin and sporopollenin biosynthesis or deposition (PubMed:24460633). Contributes to pre-invasive defense against some non-host powdery mildew pathogens by preventing the penetration of the epidermal cell wall by the fungal agents (e.g. Blumeria graminis f. sp. hordei (Bgh)) (PubMed:30102837). Expressed in seedlings, preferentially in the endodermis of hypocotyls and roots, as well as in anthers, sepals and flower tori. In roots, restricted to the endodermis/pericycle above the middle of the differentiation zone and the regions where new lateral roots are emerging (PubMed:21558309). Accumulates in the abscission zone of young siliques (PubMed:21558309, PubMed:23893219). Expressed in senescing leaves (PubMed:23893219). Induced by Phytophthora parasitica-derived necrosis and ethylene-inducing peptide (NLPPp) and microbe-associated molecular patterns (e.g. flg22). Increased susceptibility to penetration of the epidermal cell wall by the non-host mildew fungal agent Blumeria graminis f. sp. hordei (Bgh) (PubMed:30102837). Increased salt permeability in shrunken and deformed seeds, with abnormal hair-like outgrowths (PubMed:24460633). Belongs to the plant LTP family. Truncated N-terminus. Truncated N-terminus.