米爆发真菌,Magnaporthe oryzae的七月介导植物细胞入侵
Yasin F Dagdas1, Kae Yoshino, Gulay Dagdas
1School of Biosciences, University of Exeter, Exeter, UK.
概括
七在米爆真菌Magnaporthe oryzae中形成一个环,使一个专门的细胞 (appressorium) 能够破坏植物的叶子. 这种以actin为基础的结构对于真菌感染和爆病的发展至关重要.
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.
- 细胞生物学 细胞生物学
背景情况:
- 由Magnaporthe oryzae引起的爆病对全球大米生产构成重大威胁.
- 病原体需要专门的结构来透宿主植物组织感染.
研究的目的:
- 阐明了Magnaporthe oryzae. oryzae在叶皮层中通过appressorium介导的透的分子机制.
- 为了调查septins和F-actin在形成侵入性结构中的作用.
主要方法:
- 同焦显微镜可视化F-actin和隔膜动态.
- 基因分析用于研究隔膜和相关蛋白质的功能.
- 生物化学测试以了解蛋白质相互作用和膜局部化.
主要成果:
- 一个状的F-actin网络聚集在压缩体内,由异质寡合体隔膜环介导.
- 七素通过与Tea1和酸氨基酸的相互作用,在等离子体膜上支架F-actin.
- 隔膜环作为扩散屏障,定位Rvs167和Las17等关键蛋白质,以形成透.
结论:
- 七对于组装F-actin细胞骨至关重要,这对于压缩体功能来说是必不可少的.
- 隔膜环提供必要的皮质刚性和膜曲率,以突破植物皮质.
- 这种机制突出了针对真菌病原体入侵和疾病发展的新策略.
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