一种真菌病毒在真菌生物控制剂中形成了昆虫致病和非致病表型
Fátima Rueda-Maíllo1, Maria José García Del Rosal1, Inma Garrido-Jurado1
1Department of Agronomy, Maria de Maeztu Excellence Unit DAUCO, ETSIAM, Universidad de Cordoba, Campus Universitario Rabanales, Cordoba, Spain.
Virulence
|December 18, 2025
概括
病毒可以通过改变Beauveria bassiana真菌的毒性来控制昆虫害虫. 贝奥维利亚巴西安娜维多利病毒1 (BbVV-1) 感染使真菌能够透皮层并引起昆虫的病原性.
科学领域:
- 菌类学 菌类学是指菌类学.
- 病毒学 病毒学
- 昆虫学 昆虫学是一门学科.
- 植物病理学 植物病理学
背景情况:
- 菌类病毒正在探索植物病原体的生物控制和加强昆虫病原菌 (EA) 害虫控制.
- 贝奥维里亚巴西安纳 (Beauveria bassiana) 是一种具有生物害虫控制潜力的虫害致病性真菌.
研究的目的:
- 调查贝奥维利亚巴西安娜维多利病毒1 (BbVV-1) 在贝奥维利亚巴西安娜病原性中的作用.
- 为了证明Beauveria bassiana菌株的致病性和非致病性状态之间的功能切换,由真菌病毒感染介导.
主要方法:
- 对感染菌病毒 (WMI) 和无菌病毒 (MFr) 的Beauveria bassiana菌株进行比较分析.
- 评估真菌毒性,皮层透和细胞外皮层降解酶 (ECE) 活性.
- 在昆虫感染期间,对Pr1蛋白酶的基因表达分析和真菌DNA的量化.
主要成果:
- 感染了mycovirus的Beauveria bassiana (WMI) 显示出广泛的昆虫毒性,而没有mycovirus的菌株 (MFr) 是非致病的.
- MFr表现出抑制的皮质透和减少细胞外皮质降解酶 (ECE) 的分泌,特别是Pr1蛋白酶.
- 在昆虫感染期间,BbVV-1感染导致pr1基因拷贝和真菌DNA增加,这表明真菌毒性因子的直接病毒调节.
结论:
- 贝奥维利亚巴西安娜维多利病毒1 (BbVV-1) 是贝奥维利亚巴西安娜毒性的重要决定因素,可通过Pr1蛋白酶透皮质.
- BbVV-1可用于创建高毒性EA菌株,以加强害虫控制.
- 菌类病毒提供了一个调节EA病原性的工具,可能将它们从昆虫病原体转化为有益植物的微生物.
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