在日本与大麦和小麦相关的Pyrenophora物种
Perry Lorraine Duran Canare1,2, Hana Tonami2, Koharu Sekiguchi2
1Graduate School of Bioresources, Mie University, Tsu, Japan.
Mycobiology
|January 9, 2026
概括
日本的真菌病原体,以前被称为Pyrenophora tritici-repentis,实际上是Pyrenophora trichostoma. 这一发现揭示了更大的物种多样性,并需要对该地区的Pyrenophora分类学进行修订.
科学领域:
- 菌类学 菌类学是指菌类学.
- 植物病理学 植物病理学
- 分子遗传学分子遗传学
背景情况:
- 类Pyrenophora的真菌病原体显著影响全球大麦和小麦的生产.
- 在历史上,Pyrenophora tritici-repentis被认为是日本小麦黄斑病的原因.
- 初步的分子证据表明,日本存在其他Pyrenophora物种.
研究的目的:
- 调查影响日本Poaceae植物的Pyrenophora真菌的物种多样性和遗传学关系.
- 根据分子数据准确识别和分类日本存在的Pyrenophora物种.
主要方法:
- 一个连接数据集的分析,包括ITS,LSU,rpb2和gapdh基因区域.
- 对13个田间隔离物和37个培养采集隔离物进行了植物遗传学分析.
- 来自症状大麦和小麦的真菌病原体的分子鉴定.
主要成果:
- 所有之前被认定为Pyrenophora tritici-repentis的日本分离物被重新归类为Pyrenophora trichostoma.
- 这些重新分类的分离物被发现具有共享的产生毒素的基因.
- 需要对几种日本Pyrenophora分离物种的分类学标签进行修正.
结论:
- 这项研究揭示了日本Pyrenophora物种的多样性比以前理解的要高.
- 这些发现表明,需要对Pyrenophora物种进行分类学修订,特别是在日本孤立物种方面.
- 准确识别Pyrenophora物种对于管理大麦和小麦作物疾病至关重要.
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