一个新型基因的基因映射
Chao Ma1, Jiajun Qian1, Yajun Feng1
1The State Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China.
Plant disease
|June 5, 2023
概括
研究人员在Aegilops geniculata中发现了两种主导基因,使小麦具有粉状菌耐药性. 一个基因,PmAege7M,被映射到染色体7M,帮助未来的小麦提高抗病能力.
科学领域:
- 植物病理学 植物病理学
- 遗传学 是一个遗传学.
- 农业学是一种农业学.
背景情况:
- 粉状菌 (由Blumeria graminis f. sp. 引起) 是一种疾病. 全球主要的小麦疾病之一.
- 艾吉洛普斯 (Aegilops geniculata Roth) 是提高小麦抗病能力的关键遗传资源.
研究的目的:
- 在Aegilops geniculata.中识别和描述粉状菌耐药基因.
- 绘制小麦育种新型抗性基因的地图.
主要方法:
- 来自免疫 (PI 487224) 和敏感 (PI 487228) 交叉的F1,F2和F2:3后代的遗传分析.
- 大量的分离RNA-Seq和遗传链接分析.
- 使用小麦-Ae.使用标记物分析. geniculata 染色体添加线. 染色体添加线.
主要成果:
- 在PI 487224中,粉耐药性是由两个独立的主导基因控制的.
- 一个基因,PmAege7M,被映射到染色体7M的长臂.
- 该基因位于基于Ae的7D长臂 (604.73622.82 Mb) 上的4.9cM间隔. 图斯基基基因组的参考基因组.
结论:
- PmAege7M代表了增强小麦粉抗性的一个有价值的位置.
- 鉴定的标记物将促进基因转移和小麦改进的精细映射.
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