集成的GWAS,链接和转录组分析以确定玉米中光周期敏感性的遗传位置和候选基因
Yulin Jiang1,2, Shuang Guo1,3, Dong Wang1,3
1Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China.
Frontiers in plant science
|October 1, 2024
概括
玉米的开花时间对于适应至关重要. 这项研究确定了控制光周期敏感性的五个关键基因,有助于在新地区利用热带玉米.
科学领域:
- 植物遗传学 植物遗传学
- 农作物科学 农作物科学
- 进化生物学是进化的生物学.
背景情况:
- 玉米 (Zea mays) 的光敏感性和开花控制对于繁殖,化和适应至关重要.
- 了解这些特征对于在高度环境中利用热带玉米至关重要.
研究的目的:
- 调查玉米光周期敏感性的遗传基础.
- 识别控制开花时间的基因,以改善度适应.
主要方法:
- 表型化一个链接映射群体和用于光周期灵敏度指数 (PSI) 的杂交关联小组.
- 在长日和短日条件下进行转录组分析.
- 利用链接分析,全基因组关联研究 (GWAS) 和转录组数据来识别候选基因.
主要成果:
- 光周期灵敏度指数 (PSI) 的特征 (天到,花粉脱落,丝) 显示出与玉米度适应的显著相互作用.
- 确定了48个定量特征位点 (QTL) 和252个定量特征核酸 (QTN).
- 发现了五个关键候选基因 (MYB163,bif1,burp8,CADR3,Zm00001d050238) 与光周期敏感性显著相关.
结论:
- 鉴定的基因为玉米光周期敏感性的遗传结构提供了理论见解.
- 这些发现有助于理解化和改进遗传学.
- 结果促进了热带玉米生殖质在各种环境中的使用.
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