编码PHD类型转录因子SAB23的基因突变使大米具有沉浸耐受性
Ao Duan1, Rui Liu1, Changchang Liu1
1College of Life Science, Yangtze University, Jingzhou, Hubei 434025, P.R. China.
Journal of experimental botany
|October 5, 2023
概括
研究人员确定SAB23是一种负面调节大米沉浸耐受性的基因. 破坏SAB23可以提高抗洪能力,在易受洪水影响的地区提供了改善米育种的潜力.
科学领域:
- 植物生物学 植物生物学
- 遗传学 遗传学 是一个
- 农业科学 农业科学
背景情况:
- 浸水对南亚和东南亚的米产量构成重大威胁.
- 了解沉浸耐受性的遗传机制对于作物改进至关重要.
研究的目的:
- 识别和表征参与调节大米浸泡耐受性的基因.
- 阐明SAB23基因在米浸泡反应中的分子功能.
主要方法:
- T-DNA插入突变发生,以创建sab23突变.
- 在CRISPR/Cas9基因编辑中,针对SAB23.3的目标淘汰.
- 吉伯雷林含量分析 (GA4和GA1).
- 促进体结合试验和CYP714B2.2.的基因表达分析.
主要成果:
- 这种sab23突变体表现出增强的潜水耐受性,降低了植物的高度,并延迟了种子的成熟.
- 克里斯普尔/卡斯9对SAB23的淘汰导致GA4水平降低,GA1水平增加.
- SAB23直接与细胞P450 714B2 (CYP714B2) 的促进体结合.
- 破坏SAB23增加了CYP714B2的转录,模仿过度表达的表型.
结论:
- 通过调节CYP714B2表达,SAB23可以负面调节米浸泡耐受性.
- SAB23-CYP714B2通路是大米沉浸反应的关键调节者.
- 针对SAB23提供了一个有前途的战略,用于开发耐浸的米品种.
关键词:
在 GA13ox 中使用.GA4 GA4 GA4 GA4 GA4 GA4 GA4 GA4 GA4 GA4 GA4 GA4 GA4吉伯勒林林林林林林林林林林林林林林林林林林林林植物本土主体 - - 植物本土主体米 (Oryza sativa) 是一种大米.潜水耐受性 潜水耐受性转录因子的转录因子更多相关视频
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