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首页> 外文期刊>The ISME journal emultidisciplinary journal of microbial ecology >Yersinia pestis infection and laboratory conditions alter flea-associated bacterial communities
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Yersinia pestis infection and laboratory conditions alter flea-associated bacterial communities

机译：鼠疫耶尔森菌感染和实验室条件改变了跳蚤相关细菌群落

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摘要

We collected Oropsylla montana from rock squirrels, Spermophilus varigatus, and infected a subset of collected fleas with Yersinia pestis, the etiological agent of plague. We used bar-tagged DNA pyrosequencing to characterize bacterial communities of wild, uninfected controls and infected fleas. Bacterial communities within Y. pestis-infected fleas were substantially more similar to one another than communities within wild or control fleas, suggesting that infection alters the bacterial community in a directed manner such that specific bacterial lineages are severely reduced in abundance or entirely eliminated from the community. Laboratory conditions also significantly altered flea-associated bacterial communities relative to wild communities, but much less so than Y. pestis infection. The abundance of Firmicutes decreased considerably in infected fleas, and Bacteroidetes were almost completely eliminated from both the control and infected fleas. Bartonella and Wolbachia were unaffected or responded positively to Y. pestis infection.
机译：我们从松鼠，变异的Spermophilus varigatus收集了Oropsylla montana，并用鼠疫耶尔森氏菌（鼠疫的病原体）感染了一部分跳蚤。我们使用带标签的DNA焦磷酸测序来表征野生，未感染的对照和跳蚤的细菌群落。鼠疫耶尔森氏菌感染的蚤中的细菌群落比野生或对照蚤中的细菌群落彼此之间更相似，这表明感染以有针对性的方式改变了细菌群落，使得特定的细菌谱系大量减少或完全从细菌中消除。社区。实验室条件相对于野生群落也显着改变了跳蚤相关细菌群落，但远没有鼠疫耶尔森氏菌感染。在被感染的蚤中，菌丝的丰度大大降低，而拟杆菌属几乎完全从对照和被感染的蚤中消除。 Bartonella和Wolbachia对鼠疫耶尔森氏菌感染未受影响或阳性。

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