在真菌攻击后,摩门教的选择性蛋白质自我剥夺
1USDA-Agricultural Research Service, Northern Plains Agricultural Research Laboratory, 1500 N. Central Ave., Sidney, MT 59270, USA.
Journal of insect physiology
|August 18, 2023
概括
摩门的真菌感染增加了氧化酶 (PO) 免疫反应,但减少了蛋白质消耗,与预期相反. 这种饮食转变可能会限制真菌生长或损害宿主免疫力,影响昆虫的行为和生存.
科学领域:
- 昆虫病理学 昆虫病理学
- 动物行为 动物行为
- 免疫学 免疫学 免疫学
背景情况:
- 摩门教在感染期间表现出行为变化,包括改变了资源获取.
- 被真菌Beauveria bassiana感染的昆虫表现出循环氧化酶 (PO) 的减少以及对真菌攻击的易感性增加.
- 蛋白质的获取影响了摩门教板球队的侵略性.
研究的目的:
- 为了调查摩门教是否提高PO,并改变蛋白质消耗作为对Beauveria bassiana感染的反应.
- 为了确定蛋白质消耗,免疫反应和真菌感染的生存率之间的关系.
主要方法:
- 贝沃里亚巴西安纳被局部应用于摩门教.
- 在感染后的第1天和第4天收集血淋巴,以测量总蛋白质,PO和proPO.
- 对昆虫的食行为 (蛋白质和碳水化合物消耗) 进行了监测.
主要成果:
- 到第4天,受感染的的PO位数增加,而proPO保持不变.
- 在受感染的昆虫中,循环蛋白水平下降.
- 受感染的昆虫减少了蛋白质摄入量,特别是在感染后的前三天,后来减少了碳水化合物摄入量.
- 幸存率与蛋白质消耗有积极的相关性.
结论:
- 菌感染提高PO免疫反应,但导致摩门教的蛋白质摄入量减少.
- 这种选择性蛋白质剥夺可能是一种宿主策略,以限制真菌生长或由真菌操纵.
- 改变养行为,特别是减少蛋白质的获取,可能会减少食人行为和缓慢带动.
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