用ABA对大米植物进行预处理,使它们更耐受多种非生物应激
Fatemeh Habibpourmehraban1,2, Yunqi Wu1,3, Farhad Masoomi-Aladizgeh1,2
1School of Natural Sciences, Macquarie University, North Ryde, NSW 2109, Australia.
International journal of molecular sciences
|June 10, 2023
概括
用酸 (ABA) 预处理大米可以提高幼苗对干旱,盐和极端温度的耐受性. ABA治疗减轻了叶子损伤和调节了蛋白质丰富度,这表明对抗压力的原始效应.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 与最佳条件相比,多种非生物应力显著降低了作物产量和生长.
- 由于环境压力,对全球粮食安全至关重要的大米生产受到严重限制.
- 了解植物对联合压力的反应对于开发有弹性的作物至关重要.
研究的目的:
- 调查酸 (ABA) 预处理对IAC1131大米基因型对联合非生物应激 (干旱,盐,极端温度) 的耐受性的影响.
- 分析在结合非生物性压力下与ABA预处理或不进行ABA预处理的情况下,在苗中蛋白质层次的变化.
主要方法:
- 米苗 (IAC1131基因型) 被暴露在干旱,盐和极端温度压力中4天.
- 对照植物,应力植物和ABA预处理的应力植物进行了蛋白质组分析.
- 总共有3285种蛋白质被识别和量化,其中1633种被发现是差异丰富的.
主要成果:
- 通过ABA预处理,可显著减轻由蛋白质层面的联合非生物应激引起的叶子损伤.
- 外源性ABA应用没有显著改变对照植物的蛋白质组.
- 在受压力影响的植物中,ABA预处理导致了更多的蛋白质丰度变化,特别是丰度增加.
结论:
- 外源酸 (ABA) 作为原料剂,增强大米苗对多种联合无生物应激的耐受性.
- ABA预处理主要影响涉及ABA信号通路的应激反应机制.
- 这项研究强调了ABA在改善农作物在具有挑战性的环境中的弹性方面的潜力.
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