Involved in basal (BT) and acquired thermotolerance (AT), probably by preventing plasma membrane lipids peroxidation induced by severe heat-shock (HS). Lipocalin that confers protection against oxidative stress caused by heat, freezing, paraquat and light. Confers resistance to high salt (NaCl) levels, probably by protecting chloroplasts from ion toxicity via ion homeostasis maintenance. Required for seed longevity by ensuring polyunsaturated lipids integrity