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MAPK途径通过动员昆虫病原菌Beauveria bassiana中的专门基因模块来协调压力适应
Shuaishuai Huang1,2, Hailing Fan1, Chenhua Zhu3
1Key Laboratory of Biodiversity and Environment on the Qinghai-Tibet Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa 850000, China.
线素激活蛋白激酶 (MAPK) 级联对于真菌应激适应至关重要. 这项研究揭示了Boeveria bassiana中的BbHog1,BbSlt2和BbMpk1如何调节对透,细胞壁,氧化和热应激的反应.
科学领域:
- 菌分子生物学和系统生物学.
- 研究虫病原菌中的应激反应机制.
背景情况:
- 线素激活蛋白激酶 (MAPK) 级联对于真菌发育,应激适应和毒性至关重要.
- 在各种压力条件下,虫病原菌中MAPKs的特定调节网络尚不清楚.
研究的目的:
- 系统地调查BbHog1,BbSlt2和BbMpk1在昆虫病原菌Beauveria bassiana中的作用.
- 阐明由这些MAPKs管理的压力特定监管网络.
主要方法:
- 删除突变体的表型概况 (ΔBbHog1, ΔBbSlt2, ΔBbMpk1) 的表型概况.
- 在透,细胞壁,氧化和热应激下,时间过程转录学 (RNA-seq).
- 权重基因同表达网络分析 (WGCNA) 用于识别应激响应的基因模块.
主要成果:
- 确定了由三个MAPKs调节的12个应激反应基因模块,与真菌应激适应有关.
- BbHog1通过奥斯莫酸代谢,糖溶性流和细胞壁重塑来协调透适应.
- BbSlt2通过维护膜完整性和氧化还原平衡来防止热损伤; BbMpk1通过代谢和解毒途径管理氧化应激反应.
结论:
- 在B. bassiana中建立了MAPK介导的压力调节的系统级框架.
- 提供了关于真菌环境弹性的机制性见解.
- 确定了工程改进生物控制菌株的潜在分子标.
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