资源调节发育转变,但不是在昆虫系统中共感染时的感染耐受性
Nora K E Schulz1, Danial Asgari1, Siqin Liu1
1Department of Biological Sciences, Vanderbilt University, Nashville TN 37232.
bioRxiv : the preprint server for biology
|August 16, 2024
概括
饮食和寄生虫影响昆虫的免疫力和生存. 单靠能量无法解释共感染如何影响结果,强调需要详细的机制来理解宿主-寄生虫相互作用.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 免疫学 免疫学 免疫学
背景情况:
- 能量资源对于宿主免疫反应和寄生虫生长至关重要.
- 能量分配在解释多种寄生虫威胁下的感染结果中的作用仍然不清楚.
研究的目的:
- 调查饮食和资源在单一和并发感染期间在面粉甲虫 (Tribolium confusum) 中转移代谢和免疫反应中的作用.
- 确定能量分配是否足以解释免疫学对共感染结果的贡献.
主要方法:
- 在面粉甲虫 (Tribolium confusum) 中操纵了饮食.
- 诱导了两种天然寄生虫 (虫和细菌) 的感染.
- 评估了宿主内部的能量环境,青少年发育时间,免疫基因表达和肠道损伤.
主要成果:
- 格雷加林寄生虫以饮食依赖的方式改变了宿主内部的能量环境和青少年发育时间.
- 格雷加林没有影响宿主对急性细菌感染的耐药性.
- 格雷加林刺激了替代性免疫基因表达,导致肠道损伤,并减少了生存率,无论饮食如何.
结论:
- 仅仅能量分配不足以解释免疫学对共感染结果的贡献.
- 机理性见解对于预测共感染对宿主生存和健康的影响至关重要.
- 主体-寄生虫相互作用是复杂的,受到饮食,能量和特定免疫反应的影响.
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