Protects cells and enzymes from oxidative damage, by catalyzing the reduction of hydrogen peroxide, lipid peroxides and organic hydroperoxide, by glutathione. a hydroperoxy polyunsaturated fatty acid + 2 glutathione = a hydroxy polyunsaturated fatty acid + glutathione disulfide + H2O Expressed at a low but detectable level in leaves, stems, and flowers, but at a higher level in siliques and even higher in roots. Predominantly expressed in seeds. By salt stress, osmotic stress, cold treatment, and metals. Up-regulated by salicylic acid (SA), jasmonic acid (JA), abscisic acid (ABA) and auxin. Belongs to the glutathione peroxidase family. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus.