Methods and compositions for increasing tolerance to abiotic stresses in plants are provided. One embodiment provides a method for increasing salt tolerance in a plant by treating the plant with an amount of 2-keto-4-methylthiobutyric acid (KMBA) effective to increase salt tolerance in the plant relative to an untreated plant. Typically KMBA is in an aqueous solution used to irrigate the plant, seed, or seedling. In a preferred embodiment, the aqueous solution is a salt solution, including but not limited to seawater. The KMBA is typically present in the aqueous solution at 1.0 to 250 nM, preferably at least 100 nM.
本发明提供了提高植物对非
生物胁迫耐受性的方法和组合物。一个实施方案提供了一种提高植物耐盐性的方法,该方法是用一定量的 2-酮基-4-甲
硫基
丁酸(KMBA)处理植物,相对于未处理的植物,该量的 2-酮基-4-甲
硫基
丁酸能有效提高植物的耐盐性。通常情况下,KMBA 存在于用于灌溉植物、种子或幼苗的
水溶液中。在一个优选的实施方案中,
水溶液是盐溶液,包括但不限于海
水。KMBA 在
水溶液中的浓度通常为 1.0 至 250 nM,最好至少为 100 nM。