在小麦茎生病原体的重组中,西班牙的一种土著的野物种进行了调解
Julian Rodriguez-Algaba1, Dolors Villegas2, Carlos Cantero-Martínez3
1Department of Agroecology, Faculty of Science and Technology, Aarhus University, Slagelse, Denmark.
Frontiers in plant science
|January 31, 2024
概括
小麦茎生 (Puccinia graminis) 可以通过胡桃 (Berberis vulgaris) 传播. 这项研究证实了西班牙菌感染的生和谷物茎生之间的流行病学联系,影响了欧洲小麦生产.
科学领域:
- 植物病理学 植物病理学
- 农业科学 农业科学
- 菌类学 菌类学是指菌类学.
背景情况:
- 小麦茎生,由Puccinia graminis f. sp. 引起的 欧洲的小麦生产面临新的威胁.
- 另一个性宿主的作用,巴贝里 (Berberis spp. ) 在疾病流行病学方面重新获得了关注.
- 了解果和谷物之间的流行病学联系对于疾病管理至关重要.
研究的目的:
- 调查果衍生菌和邻近谷物和草上的茎生之间的流行病学联系.
- 为了确定本土的野物种是否在西班牙作为Puccinia graminis的性宿主.
- 为了评估来自果和谷物宿主的茎生分离物的遗传相关性.
主要方法:
- 用Berberis vulgaris亚种的aecia注射敏感的谷物基因型. 非常严重的.
- 树干生后代分离物的恢复和分子基因定型.
- 使用AMOVA,PCA,Fst和Nm. 来比较果衍生和谷物感染的干种群之间的遗传变异和种群结构.
主要成果:
- 从小麦,大麦和玉米中恢复了67个茎生后代隔离物,证明了来自的生可以感染多种谷物.
- 分子基因型鉴定揭示了巴贝里和附近的谷物和草干生感染的隔离物之间的明显遗传关系.
- 分析表明,两种种群体之间的基因差异较低,基因交换较高,只有1%的变异是由人口差异解释的.
结论:
- 西班牙的土著果种在流行病学上是作为Puccinia graminis的性宿主具有功能性的.
- 在当地的谷物和草上,巴贝里宿主生和茎生感染之间存在直接联系.
- 这些发现需要考虑巴贝利在欧洲和全球未来的茎生预防战略中的作用.
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