Pathogenomic Analysis of Wheat Yellow Rust Lineages Detects Seasonal Variation and Host Specificity.
Pathogenomic Analysis of Wheat Yellow Rust Lineages Detects Seasonal Variation and Host Specificity.
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DOI：
10.1093/gbe/evx241
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发表时间：
2017-12-01
影响因子：
3.3
通讯作者：
Saunders DGO
中科院分区：
文献类型：
--
作者：
Bueno-Sancho V;Persoons A;Hubbard A;Cabrera-Quio LE;Lewis CM;Corredor-Moreno P;Bunting DCE;Ali S;Chng S;Hodson DP;Madariaga Burrows R;Bryson R;Thomas J;Holdgate S;Saunders DGO
最近由（重新）出现的植物病原体引起的疾病暴发与病原体地理分布的扩大和毒力的增加有关。例如，在过去的二十年中，小麦条锈菌（Puccinia striiformis f.）triglyca sp.triglyca，已经出现了新的小种，这些小种适应更温暖的温度，扩大了毒力谱，并且比以前的小种更具侵略性，导致大规模流行。在这里，我们使用基于现场的基因分型来生成关于条斑紫菜遗传学的高分辨率数据，并进行了全球种群分析。我们还对2014年和2013年英国人群进行了比较分析，并评估了不同病原体基因型的时间动态和宿主特异性。我们的分析表明，最近在欧洲发现的条纹状原教旨主义谱系非常多样化，实际上与全球分散的种群相似。此外，我们发现了英国P. striiformis种群结构的一个相当大的变化，包括第一次发现一个臭名昭著的种族，称为Kranich。接下来，通过在一个受感染的田间样品中建立病原体和宿主的基因型，我们发现了小麦条锈菌遗传组的品种特异性的证据。最后，我们发现了潜在的季节特异性的某些基因型的病原体与几个谱系只在晚春和夏季收集的样品中确定，而一个谱系在整个小麦生长季节确定。我们发现哪些小麦品种对哪些特定的条锈菌分离株易感，以及这些分离株何时全年流行，这代表了疾病管理的有力工具。
Recent disease outbreaks caused by (re-)emerging plant pathogens have been associated with expansions in pathogen geographic distribution and increased virulence. For example, in the past two decades’ wheat yellow (stripe) rust, Puccinia striiformis f. sp. tritici, has seen the emergence of new races that are adapted to warmer temperatures, have expanded virulence profiles, and are more aggressive than previous races, leading to wide-scale epidemics. Here, we used field-based genotyping to generate high-resolution data on P. striiformis genetics and carried out global population analysis. We also undertook comparative analysis of the 2014 and 2013 UK populations and assessed the temporal dynamics and host specificity of distinct pathogen genotypes. Our analysis revealed that P. striiformis lineages recently detected in Europe are extremely diverse and in fact similar to globally dispersed populations. In addition, we identified a considerable shift in the UK P. striiformis population structure including the first identification of one infamous race known as Kranich. Next, by establishing the genotype of both the pathogen and host within a single infected field sample, we uncovered evidence for varietal specificity for genetic groups of P. striiformis. Finally, we found potential seasonal specificity for certain genotypes of the pathogen with several lineages identified only in samples collected in late spring and into the summer, whereas one lineage was identified throughout the wheat growing season. Our discovery of which wheat varieties are susceptible to which specific P. striiformis isolates, and when those isolates are prevalent throughout the year, represents a powerful tool for disease management.
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影响因子：
12.3
作者：
Derevnina L;Michelmore RW
通讯作者：
Michelmore RW
影响因子：
1.2
作者：
Cingolani, Pablo;Platts, Adrian;Ruden, Douglas M.
通讯作者：
Ruden, Douglas M.
影响因子：
4.9
作者：
Gladieux, Pierre;Wilson, Benjamin A.;Taylor, John W.
通讯作者：
Taylor, John W.
影响因子：
2.4
作者：
Gaerke, C.;Ytournel, F.;Simianer, H.
通讯作者：
Simianer, H.
影响因子：
3.2
作者：
CHEN, XM;LINE, RF;LEUNG, H
通讯作者：
LEUNG, H