TaMyb10的变化及其作用于小麦的谷物颜色和收割前芽阻力
Jing Lang1, Huayu Jiang2, Mengping Cheng1
1State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, 611130, China.
The Plant journal : for cell and molecular biology
|February 26, 2024
概括
在小麦中,预收割发芽 (PHS) 抵抗对于粮食安全至关重要. 这项研究揭示了TaMyb10基因的显著序列变异,TaMyb10-D主要影响种子颜色和发芽,为PHS抗性育种提供了洞察力.
科学领域:
- 植物遗传学和育种.
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 收获前发芽 (PHS) 显著影响小麦产量和质量,威胁全球粮食安全.
- TaMyb10基因家族,特别是TaMyb10-D (PHS-3D),对于小麦的PHS耐药性至关重要.
- 了解TaMyb10的序列变异对于开发耐PHS的小麦品种至关重要.
研究的目的:
- 在面包小麦和Aegilops tauschii连接中表征TaMyb10基因的序列变异.
- 调查TaMyb10变异与PHS抗性特征的功能分歧和关联.
- 通过基因改进提供有关提高小麦PHS耐药性的见解.
主要方法:
- 在416个面包小麦和302个Aegilops tauschii加入中对TaMyb10-A,TaMyb10-B和TaMyb10-D基因进行序列分析.
- 在TaMyb10基因中识别和描述插入/删除 (in/del) 突变.
- 分析TaMyb10基因型,下游基因促进剂结合和表型特征 (谷物颜色,发芽) 之间的关联.
主要成果:
- 在TaMyb10-A (61.3%),TaMyb10-B (79.3%) 和TaMyb10-D (40.8%) 中发现了显著的内/外突变.
- 在全球范围内发现了普遍的TaMyb10基因型 (TaMyb10-A-IIIDele,TaMyb10-B-IVDele,TaMyb10-D-VDele),与地理分布几乎没有相关性.
- 尽管有结构变异,但TaMyb10蛋白显示出类似的促进体结合能力;TaMyb10-D主要影响了红色种子颜色并减少了发芽.
结论:
- 在小麦及其野生亲属中,TaMyb10基因的结构变异很普遍.
- 塔Myb10-D在确定种子颜色和发芽百分比方面发挥着主导作用,这表明它对PHS耐药性的关键贡献.
- 这项研究为培育耐PHS的小麦品种提供了宝贵的遗传资源和见解.
关键词:
艾吉洛普斯 (Aegilops tauschiichii) 是一个的动物.在 TaMyb1010 中使用.发芽 发芽 发芽 是一个过程.谷物颜色 谷物颜色收获前的发芽 在收获前的发芽.小麦小麦小麦小麦小麦小麦小麦.更多相关视频
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