茉莉酸甲酯通过促进脱水素积累缓解小麦植株的水分胁迫损伤。
Methyl jasmonate alleviates water stress-induced damages by promoting dehydrins accumulation in wheat plants.
机构信息
Institute of Biochemistry and Genetics - Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 450054, Ufa, Russia.
Institute of Biochemistry and Genetics - Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 450054, Ufa, Russia.
出版信息
Plant Physiol Biochem. 2020 Oct;155:676-682. doi: 10.1016/j.plaphy.2020.07.012. Epub 2020 Jul 30.
The investigation of dehydrins participation in MeJA-induced protection of wheat plants (Triticum aestivum L.) from drought stress was performed. The dehydration was designed by the presence of mannitol in increasing concentration (3, 4, and 5%) in the growth medium of wheat seedlings. Pre-treatment of 3-days-old seedlings with 0.1 μM MeJA reduced the level of drought-induced growth retardation as well as membrane structures lesions. Exogenous MeJA enhanced accumulation of the TADHN dehydrin transcripts and dehydrin proteins with Mw 28 and 55 kDa in wheat seedlings under normal conditions and additionally increased their expression during dehydration. The obtained data may indicate the dehydrins involvement in MeJA protective effect on wheat plants from the damages caused by water deficit.
本研究旨在探讨脱水素在茉莉酸甲酯（MeJA）诱导的小麦（Triticum aestivum L.）植株抗旱保护中的作用。通过在小麦幼苗生长培养基中添加不同浓度（3%、4%和 5%）甘露醇来模拟干旱胁迫。结果表明，0.1μM MeJA 预处理 3 天龄幼苗可减轻干旱诱导的生长迟缓及膜结构损伤。在正常条件下，外源 MeJA 可增强 TADHN 脱水素转录本和 28kDa、55kDa 两种脱水素蛋白的积累，且在干旱胁迫下其表达量进一步增加。上述结果表明，脱水素可能参与了 MeJA 对小麦植株的保护作用，减轻了由水分亏缺引起的损伤。
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