Estonian University of Life Sciences, 51006 Tartu, Estonia.
INRAE, UMR IGEPP, 35653 Le Rheu, France.
Phytopathology. 2022 Feb;112(2):414-421. doi: 10.1094/PHYTO-12-20-0542-R. Epub 2022 Feb 3.
Until recently, genotypes of were regionally distributed in Europe, with populations in western Europe being dominated by clonal lineages and those in northern Europe being genetically diverse because of frequent sexual reproduction. However, since 2013 a new clonal lineage (EU_41_A2) has successfully established itself and expanded in the sexually recombining populations of northern Europe. The objective of this study was to study phenotypic traits of the new clonal lineage of , which may explain its successful establishment and expansion within sexually recombining populations. Fungicide sensitivity, aggressiveness, and virulence profiles of isolates of EU_41_A2 were analyzed and compared with those of the local sexual populations from Denmark, Norway, and Estonia. None of the phenotypic data obtained from the isolates collected from Denmark, Estonia, and Norway independently explained the invasive success of EU_41_A2 within sexual Nordic populations. Therefore, we hypothesize that the expansion of this new genotype could result from a combination of fitness traits and more favorable environmental conditions that have emerged in response to climate change.
直到最近， 的基因型在欧洲呈区域性分布，西欧的种群以克隆谱系为主，而北欧的种群由于频繁的有性繁殖而具有遗传多样性。然而，自 2013 年以来，一种新的克隆谱系（EU_41_A2）已经成功建立并在北欧的有性重组种群中扩张。本研究的目的是研究 的新克隆谱系的表型特征，这可能解释其在有性重组种群中成功建立和扩张的原因。分析了 EU_41_A2 分离株的杀菌剂敏感性、侵袭性和毒力特征，并与丹麦、挪威和爱沙尼亚当地的有性种群进行了比较。从丹麦、爱沙尼亚和挪威采集的分离株获得的表型数据均不能单独解释 EU_41_A2 在北欧有性种群中的入侵成功。因此，我们假设这种新基因型的扩张可能是由于适应气候变化而出现的适应性特征和更有利的环境条件的组合所致。
