第一次报告的Pyrenophora teres与大麦和大麦草分离物之间的性重组
Buddhika Amarasinghe Dahanayaka1, Alexandros G Sotiropoulos1, Niloofar Vaghefi1,2
1Centre for Crop Health, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
Phytopathology
|June 27, 2024
概括
来自大麦和大麦草的Pyrenophora teres之间的性重组得到了证实. 这一发现挑战了先前的研究,并表明了影响商业大麦的新病态型的风险.
科学领域:
- 植物病理学 植物病理学
- 遗传学 遗传学 是一个
- 农业科学 农业科学
背景情况:
- 大麦草 (Hordeum leporinum) 是Pyrenophora teres的宿主,这种病原体会导致大麦 (Hordeum vulgare) 的净斑.
- 以前的研究表明,大麦和大麦草的P. teres种群之间存在遗传特异性和宿主特异性.
研究的目的:
- 调查从大麦和大麦草中分离的P. teres之间的性重组的可能性.
- 评估P. teres分离物及其后代在不同宿主上的病原性.
主要方法:
- 七个后代分离体的全基因组测序.
- 使用邻居网网络和哈普洛布洛克图表进行家族基因组学分析.
- 对大麦和大麦草的致病性测定.
主要成果:
- 从大麦和大麦草中分离的P. teres之间确认的性重组.
- 从大麦草中分离出的P. teres不是宿主特异性的,可以感染大麦和大麦草.
- 后代分离物对商业大麦品种有毒.
结论:
- 这与之前关于不同P. teres种群的发现相矛盾;宿主和生殖分离不完整.
- 通过大麦和大麦草分离物之间的重组产生新型病型的潜力.
- 增加对缺乏抗性的商业大麦品种影响的风险.
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