基因型测序揭示了来自番茄的Alternaria linariae中的种群差异化和联系不平衡
Tika B Adhikari1, Bode A Olukolu2, Rajan Paudel1
1Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695.
Phytopathology
|September 26, 2023
概括
对Alternaria linariae的遗传分析揭示了具有高度遗传差异化的三个不同的亚群,这表明复合能力有限,需要番茄的广泛耐药性.
科学领域:
- 植物病理学 植物病理学
- 人口遗传学 人口遗传学
- 基因组学就是基因组学.
背景情况:
- 阿尔特纳里亚线虫是一种重要的病原体,导致西红的早期腐烂.
- 了解其遗传多样性是有效疾病管理的关键.
研究的目的:
- 研究Alternaria linariae的遗传多样性,种群结构和进化潜力.
- 测试北卡罗来纳州孤立物体中遗传差异化和链接不平衡 (LD) 的假设.
主要方法:
- 在124个Alternaria spp.上使用基因型测序 (GBS). 孤立的. 孤立的.
- 泛基因识别变异调用和过确定了53,238个保存的变异.
- 主要组成部分的区分分析和结构分析划分了子群.
主要成果:
- 鉴定出了A. linariae的三个不同的亚种群,其添加剂量最小.
- 观察到高遗传差异化 (FST = 0.86) 和远程LD,表明重组率低.
- 对分子方差的分析显示,在种群之间有89%的变化,而在种群内只有11%.
结论:
- A. linariae 呈现出显著的人口遗传差异化.
- 有限的性繁殖可能有助于观察到的遗传结构.
- 开发具有广泛耐药性的番茄品种对于管理各种A. linariae分离物至关重要.
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