科恩的Ciborinia camelliae的分子表征显示了物种内变异性,并表明了病原体的跨大陆移动
Marco Saracchi1, Irene Valenti1, Paolo Cortesi1
1Department of Food, Environmental, and Nutritional Sciences, University of Milan, 20133 Milan, Italy.
Microorganisms
|November 25, 2023
概括
西博里尼 (Ciborinia camelliae) 是导致花花的病原体. 遗传分析显示,全球C. camelliae菌株的变异性很高,这表明可能出现新的病变型和对驼种植的风险.
科学领域:
- 植物病理学 植物病理学
- 菌类学 菌类学是指菌类学.
- 遗传学 是一个遗传学.
背景情况:
- 卡梅利亚花病是由Ciborinia camelliae真菌引起的.
- 这种真菌特别向和感染驼花.
研究的目的:
- 为了对来自全球不同地区的Ciborinia camelliae分离物进行遗传特征鉴定.
- 评估全球C. camelliae菌株的遗传变异性和种群结构.
主要方法:
- 使用四种基因标记物进行多位序列类型化 (MLST):核糖体DNA,β-tubulin II,延长因子1-alpha和甘-3-酸盐脱酶.
- 全球原始聚合酶链反应 (UP-PCR) 来评估菌株变异性.
主要成果:
- 在欧洲C. camelliae菌株中观察到高度的遗传相似性.
- 在新西兰和中国菌株中发现了显著的遗传多样性,UP-PCR证实了欧洲以外的多样性并确定了欧洲的子群.
- 新西兰和法国之间共享的遗传特征表明病原体通过受感染的植物材料移动.
结论:
- 西博里尼亚·卡梅利亚表现出高度的物种内部变异性,可能是由性繁殖驱动的.
- 这种变异性带来了新病态型的出现的风险,这些病态型能够感染新型梅花品种.
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