病原体是昆虫宿主中的共生体快速传播的重要驱动力
Dongxiao Zhao1, Zhichun Zhang1, Hongtao Niu1
1Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
Nature ecology & evolution
|August 10, 2023
概括
病原体可以推动昆虫微生物共生体的转变. 病原体的压力促进白中的Rickettsia共生体,然后抑制病原体的传播.
科学领域:
- 微生物生态学 微生物生态学
- 昆虫病理学 昆虫病理学
- 协生生态的动力学
背景情况:
- 微生物共生生物对入侵宿主的病原体构成挑战.
- 病原体在共生动力学中的生态作用仍然在很大程度上是未知的.
- 了解这些相互作用对于宿主-病原体-共生体系统生态学至关重要.
研究的目的:
- 研究病原体在塑造自然昆虫群体中的微生物共生群体中的作用.
- 确定昆虫病原菌Cordyceps javanica和白中的共生体之间的关系.
- 阐明驱动在病原体压力下的共生物组成转变的机制.
主要方法:
- 在中国 (2016-2021) 的Bemisia tabaci种群中长度追踪Cordyceps javanica和共生者动态.
- 实验室和实地实验应用病原体压力来评估Rickettsia共生体的固定.
- 对Rickettsia传递的抑制病原体感染,增殖和化的分析.
主要成果:
- 在白种群中观察到虫病原菌和Rickettsia共生体之间存在正相关性.
- 病原体的压力被证明可以选择性地驱动Rickettsia在白中固定.
- 里克特西亚显著抑制了病原体的感染,增殖和化,作为病原体传播的障碍物.
结论:
- 病原体是自然环境中宿主共生体组成快速变化的重要驱动因素.
- 里克特西亚共生体抑制病原体的能力可以影响宿主-病原体动态和传播.
- 这项研究强调了生态环境中病原体,共生体和昆虫宿主之间的复杂相互作用.
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