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深层种群结构与宿主本地化要求相关,大麦网斑点真菌病原体

Julie Ramírez Martínez¹, Sonia Guillou¹, Stéphanie Le Prieur²

¹PHIM Plant Health Institute, Univ. Montpellier, INRAE, CIRAD, Institut Agro, IRD, Montpellier, France.

Microbial genomics

|May 7, 2024

概括

在大麦中的侵入性真菌病原体Pyrenophora teres种群显示出不同的遗传结构. 麦种植的差异,如本地化需求,驱动病原体分歧,影响疾病管理策略.

科学领域:

植物病理学植物病理学
进化生物学是进化的生物学.
农业科学农业科学

背景情况:

侵入性真菌病原体威胁着全球的作物产量.
了解病原体进化是可持续疾病管理的关键.
皮雷诺波拉特雷斯 (Pyrenophora teres) 是一个主要的大麦病原体,具有不同的血统 (Ptt和Ptm).

研究的目的:

在法国和全球范围内调查Pyrenophora teres种群基因组结构.
确定影响P. teres种群结构的因素,特别是与大麦种植有关的因素.

主要方法:

用基因型测序 (GBS) 来分析病原体种群.
人口基因组结构在全球和法国范围内进行了评估.
研究了病原体种群分化与大麦品种特征 (本地化) 之间的关联.

主要成果:

在法国,Pyrenophora teres的Ptt和Ptm系共存,其中Ptt是主导的.
观察到Ptt血统内的种群差异化,并与大麦本土化要求有关.
在春季和冬季大麦品种中确定了明显的Ptt种群集群.

结论:

培养条件,可能与宿主遗传差异有关,维持不同的病原体种群.
这项研究促进了对Pyrenophora teres-barley共同进化的动态的理解.
需要进一步研究宿主与非生物适应在塑造病原体种群.

关键词:

净形式净批量 (NFNB)皮雷诺波拉 (Pyrenophora teresf.maculatata) 是一个状的动物.皮雷诺波拉 (Pyrenophora teresf.teres) 是一个有趣的植物.现货形式净批量 (SFNB)地方适应地方适应人口基因组学人口基因组学春季大麦 - 春季大麦温度的温度的温度的温度的温度冬季大麦冬季大麦

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相关概念视频

Frequency-dependent Selection

Frequency-dependent Selection

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.