基因组分析揭示了人口结构和指小米中的紫色污名色候选基因
Katrien M Devos1,2,3, Peng Qi4,5,6, Bochra A Bahri4,7
1Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Athens, GA, 30602, USA. kdevos@uga.edu.
Nature communications
|June 21, 2023
概括
一种适应气候变化的作物 - - 指小米,现在拥有染色体规模的参考基因组. 这种基因组资源有助于了解其遗传构成,并改善这一重要的粮食安全主食.
科学领域:
- 植物基因组学 植物基因组学
- 农作物科学 农作物科学
- 生物信息学是一种生物信息学.
背景情况:
- 指小米是东非,印度和尼泊尔的重要粮食安全作物.
- 它以气候适应性和营养谷物质量而闻名.
- 繁殖工作需要先进的基因组资源.
研究的目的:
- 组装和注释指小米的染色体尺度参考基因组.
- 为了促进21世纪的指小米的繁殖进步.
主要方法:
- 基因组组装和注释. 基因组组装和注释.
- 人口结构分析.
- 候选基因的特征映射和变异分析.
主要成果:
- 一个大约130万年前的全四基因组参考基因组的组装.
- 识别高同源基因保留率和缺少亚基因组优势.
- 发现基因突变与失去紫色/污名染色有关.
结论:
- 参考基因组为指小米遗传学和育种提供了基础资源.
- 失去紫色色彩是由于特定调节基因的功能丧失突变.
- 种子中的 proanthocyanidin 生产不受这些特定基因淘汰的影响.
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