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小麦条纹生病原体的遗传多样性和种群结构 (Puccinia striiformis f. sp. 在土耳其的"tritici" (三角形)

Ahmet Cat¹, Mehmet Tekin²

¹Department of Plant Protection, Siirt University, Siirt, 56100, Turkey.

|June 21, 2023

概括

这项研究揭示了小麦条纹生 (Puccinia striiformis f. sp. 在土耳其. tritici). 东南安纳托利亚是流行病的关键来源,区域之间存在大量的基因流动,这表明混合繁殖策略.

科学领域:

植物病理学植物病理学
人口遗传学人口遗传学
农业科学农业科学

背景情况:

条纹生,是由Puccinia striiformis f. sp. 引起的三 (Pst),对全球小麦产量构成重大威胁.
土耳其的Pst种群的遗传动态在很大程度上仍然没有特征,这阻碍了有效的疾病管理.

研究的目的:

为了阐明土耳其Pst的种群遗传结构.
为了绘制区域普斯特人群之间的迁移网络.
为制定有针对性的小麦条纹生管理策略提供见解.

主要方法:

从土耳其6个地理区域 (2018-2020年) 抽取140个Pst分离物的样本.
使用21个简单序列重复 (SSR) 位点进行基因型识别.
用贝叶斯赋值和分子方差分析人口遗传结构,多样性和迁移模式.

主要成果:

鉴定出了70种不同的多部位基因型,分为三个主要遗传组.
东南安纳托利亚地区表现出最高的基因型多样性,表明其作为潜在的流行病源的作用.
在分离物体内观察到高基因变异 (90.25%),在东南亚和中亚纳托利亚之间检测到显著的迁移.

结论:

这是第一个详细介绍土耳其PST遗传关系和种群结构的综合性研究.
调查结果强调东南安纳托利亚是Pst多样性和流行病发病的关键地区.
了解Pst种群动态和迁移对于实施有效的对抗小麦条纹的控制策略至关重要.

关键词:

普奇尼亚形虫 (Puccinia striiformis f. sp. f. sp.) 是一种形虫. 这里是Triticity和Triticity的位置.遗传关系遗传关系移民移民迁移迁移人口动态人口动态简单的序列重复重复.条纹生条纹生

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