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一种自由生活的Serratia symbiotica菌株增强了虫的发育,可能是通过改变宿主营养成分

Hao Li¹, Li-Qun Cai¹, Qian Mou¹

¹State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, China.

Pest management science

|March 15, 2026

概括

虫肠道细菌Serratia symbiotica (SsMj) 对宿主营养代谢至关重要. 它的缺失减缓了虫的发展,并改变了糖和氨基酸水平,表明了相互关系.

科学领域:

昆虫与微生物的相互作用
我们的肠道微生物组.
营养物质的新陈代谢

背景情况:

虫拥有各种微生物,影响它们的生物学.
一种自由生活的Serratia symbiotica菌株 (SsMj) 在Megoura crassicauda肠道中大量存在.
对SsMj对其虫宿主的生物影响在很大程度上是未知的.

研究的目的:

研究肠道细菌Serratia symbiotica (SsMj) 对其虫宿主Megoura crassicauda的生物学影响.
阐明SsMj在虫营养代谢和宿主健康中的作用.

主要方法:

产生SsMj- (缺少SsMj) 和SsMj+ (具有SsMj) 梅古拉大白 (Megoura crassicauda) 虫线.
微生物群量化,虫发育和生存测试.
代谢分析,胰岛素类 (ILP) 基因表达分析和RNA干扰 (RNAi).
塞拉提亚共生菌株的比较基因组学.

主要成果:

与SsMj-虫相比,SsMj-虫的发育速度较慢,体型较小,存活率降低,糖/氨基酸代谢发生改变.
在SsMj-虫中ILP基因表达升高表明对营养不平衡的反应;ILP RNAi证实了它在虫生长中的作用.
与其他Serratia symbiotica菌株相比,SsMj基因组具有增强的氨基酸合成基因.

结论:

交生菌在虫的营养代谢中起着至关重要的作用,可能会将糖转化为氨基酸,用于宿主发育.
由SsMj提供的健身好处表明了相互关联,突出显示了它在昆虫微生物相互作用中的重要性.

关键词:

这种植物是Serratia symbiotica.这种共生是共生.虫虫虫虫虫是一种发展发展发展发展发展.这是一种类似胰岛素的.

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