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第1组硬麦中的LEA蛋白:进化,表达和在非生物应激耐受性中的作用

Najeh Soltani¹, Ikram Zaidi¹, Mohamed Najib Saidi¹

¹Biotechnology and Plant Improvement Laboratory, Centre of Biotechnology of Sfax, P.O. Box 1177, Sfax 3018, Tunisia.

Plants (Basel, Switzerland)

|September 27, 2025

概括

硬小麦中的1组LEA蛋白对于种子发育和应激保护至关重要. 这项研究确定了8个基因,揭示了它们对干燥,寒冷和热的保护作用,增强了对压力的耐受性.

科学领域:

植物分子生物学植物分子生物学
基因组学就是基因组学.
生物化学生物化学

背景情况:

第1组晚期胚胎生成丰富 (LEA) 蛋白质对于植物的干燥耐受性至关重要.
它们在 durum 小麦 (Triticum turgidum ssp. 耐久性) 仍然没有得到充分的研究.
这项研究提供了对 durum wheat 中的 1 组 LEA 蛋白质的首次全面分析.

研究的目的:

在 durum小麦中识别和表征1组LEA基因.
为了研究这些基因的进化关系.
阐明它们在耐压力和发育过程中的功能.

主要方法:

生物信息分析用于基因识别和表征.
用相关物种进行遗传学分析.
在ciss-regulatory元素的形分析.
在各种压力条件下对基因表达进行分析.
蛋白质净化和功能测试 (护卫子活性,LDH保护).
在酵母中异质表达以评估应激耐受性.

主要成果:

在 durum小麦基因组中发现了8个1组LEA基因 (TtEM1-TtEM8).
TtEM 蛋白质高度失序,并且在核中定位.
遗传学分析揭示了四个不同的群体,它们的基因和基因结构保留了.
西斯元素分析表明它在激素调节,应激反应和发育中的作用.
图TEM1和图TEM4表现出不同的表达模式,并充当分子伴侣.
这些蛋白质保护酶活性免受非生物压力,并增强酵母的应激耐受性.

结论:

这项研究全面描述了 durum wheat 中的 1 组 LEA 基因家族.
这些基因在种子发育和非生物应激适应中起着重要作用.
图TEM1和图TEM4蛋白质具有分子伴侣活性,并赋予广泛的应激耐受性.

关键词:

在EM基因中,EM基因是EM基因.在 LDH 和 LDH 之间.酵母酵母是一种酵母.无生物压力是无生物压力.硬小麦硬小麦硬小麦表达式分析,表达式分析.

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