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Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes
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在玉米发芽期间增强寒冷耐受性ZmbHLH30

Xinguang Tang1, Yitong Sun1, Bangguo Zhang1

  • 1Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Engineering Technology Research Center of Maize Germplasm Resources Innovation on Cold Land of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China.

Plants (Basel, Switzerland)
|February 27, 2026
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概括

低温显著影响玉米的生长,特别是发芽. 该研究确定ZmbHLH30作为一个关键基因,增强了玉米幼苗和发芽过程中的耐寒性.

关键词:
在ZmbHLH3030中使用.寒冷耐受性 耐寒性 耐寒性功能验证的功能验证发芽阶段是发芽阶段.玉米玉米玉米是一种

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科学领域:

  • 植物科学 植物科学
  • 遗传学 遗传学是一种遗传学.
  • 无生物性压力生物学

背景情况:

  • 低温在整个生命周期中对玉米造成显著的非生物压力,发芽非常敏感.
  • 了解寒冷耐受性背后的遗传机制对于改善玉米的弹性至关重要.

研究的目的:

  • 确定负责玉米早期耐寒性的候选基因.
  • 研究ZmbHLH30在调节玉米对低温反应中的功能.

主要方法:

  • 使用定量特征位置 (QTL) 映射来识别候选基因.
  • 进行了基因表达分析,蛋白质定位研究和促进剂活性测试.
  • 使用过度表达和CRISPR/Cas9基因编辑技术来评估ZmbHLH30的功能.
  • 进行了综合的转录和代谢分析.

主要成果:

  • ZmbHLH30被确定为耐寒的候选基因.
  • ZmbHLH30蛋白位于细胞质中,其促进体含有应激反应元素.
  • 过度表达ZmbHLH30增强了在发芽,芽和幼苗阶段的耐寒性.
  • ZmbHLH30淘汰赛线路表现出降低的耐寒性.
  • 在过度表达和淘汰赛线上,ZmbHLH30表达是由冷应力调节的.

结论:

  • ZmbHLH30在调解玉米的寒冷耐受性方面发挥着至关重要的作用,特别是在早期发展阶段.
  • 这些发现为玉米寒冷应激反应机制提供了宝贵的遗传洞察力.