Croll D, Crous P W, Pereira D, Mordecai E A, McDonald B A, Brunner P C
Laboratory of Evolutionary Genetics, Institute of Biology, University of Neuchâtel, CH-2000 Neuchâtel, Switzerland.
Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands.
Persoonia. 2021 Jun;46:116-128. doi: 10.3767/persoonia.2021.46.04. Epub 2021 Feb 14.
Several plant pathogenic species have been identified infecting wheat and other cereals over the past 50 years. As new lineages were discovered, naming conventions grew unwieldy and the relationships with previously recognized species remained unclear. We used genome sequencing to clarify relationships among these species and provided new names for most of these species. Six of the nine described species were recovered from wheat, with five of these species coming from Iran. Genome sequences revealed that three strains thought to be hybrids between and were not actually hybrids, but rather represented rare gene introgressions between those species. Our data are consistent with the hypothesis that originated as a pathogen of wild grasses in the Fertile Crescent, then emerged as a wheat pathogen via host-tracking during the domestication of wheat in the same region. The discovery of a diverse array of species infecting wheat in Iran suggests that new wheat pathogens could emerge from this region in the future. : Croll D, Crous PW, Pereira D, et al. 2021. Genome-scale phylogenies reveal relationships among Parastagonospora species infecting domesticated and wild grasses. Persoonia 46: 116-128. https://doi.org/10.3767/persoonia.2021.46.04.
在过去50年里,已鉴定出几种感染小麦和其他谷物的植物致病物种。随着新谱系的发现,命名惯例变得繁琐,与先前公认物种的关系仍不明确。我们利用基因组测序来厘清这些物种之间的关系,并为其中大多数物种提供了新名称。九个已描述物种中的六个是从小麦中分离出来的,其中五个物种来自伊朗。基因组序列显示,三个被认为是[两个物种名称未给出]之间杂交种的菌株实际上并非杂交种,而是代表了这些物种之间罕见的基因渗入。我们的数据与以下假设一致:[物种名称未给出]起源于新月沃地的野生禾本科植物病原体,然后在同一地区小麦驯化过程中通过宿主追踪成为小麦病原体。在伊朗发现多种感染小麦的[物种名称未给出]物种表明,未来该地区可能会出现新的小麦病原体。:克罗尔D、克劳斯PW、佩雷拉D等。2021年。基因组尺度系统发育揭示感染驯化和野生禾本科植物的拟茎点霉属物种之间的关系。《佩尔索尼亚》46:116 - 128。https://doi.org/10.3767/persoonia.2021.46.04 。