Seasonal variation of postmortem microbial communities.

Seasonal variation of postmortem microbial communities.
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DOI:
10.1007/s12024-015-9667-7
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发表时间:
2015-06
期刊:
Forensic science, medicine, and pathology
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其他
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最近发现,在啮齿动物和猪模型的实验条件下,尸体相关微生物在分解过程中发生了显着变化,经历了生态演替。我们调查了夏季和冬季实验条件下,与猪尸体相关的土壤中的微生物演替。我们证明,这些死后微生物群落的变化在一个特定的,可重复的方式,土壤微生物代表了一个重要组成部分的死后微生物群落,相反,在法医科学的普遍信念。但是,分解对土壤微生物群落的影响在夏季和冬季是不同的。我们认为,微生物生态演替将是有益的法医学死亡调查,但是,在冬季的观察可能不适用于夏季,这表明需要更好地了解分解的季节性。
Body-associated microbes were recently shown to change significantly during decomposition, undergoing an ecological succession in experimental conditions using rodent and swine models. We investigated microbial succession in soils associated with swine carcasses under experimental field conditions in summer and winter. We demonstrate that these postmortem microbial communities change in a specific, reproducible fashion, and that soil microbes represent a significant component of the postmortem microbial community, contrary to widespread belief in forensic science. However, the effects of decomposition on soil microbial communities were different in summer and winter. We suggest that the microbial ecological succession will be useful in medicolegal death investigation; however, observations in winter might not be applicable to summer, which indicates a need for a greater understanding of the seasonality of decomposition.
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