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多功能Zea maysGLUTAREDOXIN S17作为宏分子调节剂,提高了田间种植的玉米的抗干旱能力

Wan Woo Yeom¹, Joon Ki Hong¹, Sang Ryeol Park¹

¹National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea.

International journal of biological macromolecules

|November 8, 2025

概括

过度表达GRX基因的转基因玉米显示干旱耐受性和谷物产量增加. 这些发现提供了一种策略,在缺水条件下提高作物生产.

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:

干旱压力显著降低了全球作物产量,需要有弹性的品种.
葡萄糖素 (GRXs) 调节细胞的氧化还原稳定,但它们在作物中的作用还未得到充分研究.

研究的目的:

研究玉米GRX基因在干旱耐受性中的功能.
开发转基因玉米,在干旱压力下提高生产力.

主要方法:

开发了表达ZmGRXS17.1或ZmGRXS17.2.2的转基因玉米杂交系.
评估了干旱和透应激耐受性,口腔关闭,基因表达和活性氧物种积累.
在干旱和非干旱条件下进行实地实验,以评估农学特征和谷物产量.

主要成果:

干旱压力对ZmGRXS17.1和ZmGRXS17.2的转录进行了上调.
转基因系表现出对干旱和透应激的耐受性增加,增强了酸介导的口腔关闭.
过度表达ZmGRXS17.1/ZmGRXS17.2诱导了关键干旱耐受性调节剂 (ZmNAC111,ZmVPP1) 和减少反应性氧物种.
实地试验证实,在干旱条件下转基因品种线增强了应力耐受性和谷物产量,而在非干旱条件下产量不受影响.

结论:

过度表达ZmGRXS17.1或ZmGRXS17.2的玉米植物在干旱下表现出更好的弹性和产量.
这种增强的耐受性是由改善的口腔调节,基因表达调节和氧化还原稳定作用的介导.
这些GRX基因为可持续农业开发抗旱作物提供了一个有希望的战略.

关键词:

干旱干旱干旱干旱葡萄糖毒素是一种毒素.玉米玉米玉米是一种

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