叶爆炸病原体经历了典型的根感染真菌的发育过程
1The Sainsbury Laboratory, John Innes Center, Norwich, UK.
Nature
|October 1, 2004
概括
米爆真菌Magnaporthe grisea表现出以前未知的根感染行为,导致大米的系统性入侵和疾病. 这一发现影响了对真菌病原性和疾病控制策略的理解.
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:
- 麦格纳波特格里萨是主要的米病原体,对农业造成重大损害.
- 叶子感染M. grisea涉及明确的发育阶段,包括appressoria形成.
- 已经确定了30多个影响M. grisea叶子感染的基因.
研究的目的:
- 为了研究Magnaporthe grisea的新型发育途径.
- 描述M. grisea对根部感染和随后的全身传播的潜力.
- 为了确定是否对叶子感染有效的现有抵抗机制也适用于根部感染.
主要方法:
- 在感染期间观察M. grisea的发育阶段.
- 对M. grisea病原性的遗传分析.
- 根植殖后疾病发展的评估.
- 基因对基因抵抗在根的评估.
主要成果:
- M. grisea 显示了根感染病原体的特征性非特征性发育事件.
- 根植殖由M. grisea可能导致系统性入侵和空气疾病症状.
- 对叶子感染有效的基因对基因耐药性也在米根中起作用.
结论:
- 马格纳波特格里塞亚具有双重致病性策略,感染了叶子和根.
- 根部感染M. grisea可以导致地上植物部位的疾病.
- 对真菌流行病学,植物育种和综合疾病管理的影响是显著的.
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