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Insights into gut microbiota communities of Poecilobdella manillensis, a prevalent Asian medicinal leech

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机构： [1]Department of Medical Parasitology, School of Basic Medicine, Central South University, Changsha, Hunan, China [2]Engineering Research Center for Exploitation & Utilization of Leech Resources in Universities of Yunnan Province, School of Agriculture & Life Sciences, Kunming University, Kunming, 650214, China [3]Department of Medical Ultrasonography, Fifth Affiliated Hospital, Kunming Medical University, Gejiu, 661000, China [4]Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan, China

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关键词： bacteria fungi Hirudinea infection pathogens

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Medicinal leeches (Annelida: Hirudinea) are fresh water ectoparasitic species which have been applied as traditional therapy. However, gut microbiota could bring high risks of opportunistic infections after leeching and arouses great interests. Here, gut bacterial and fungal communities of an Asian prevalent leech Poecilobdella manillensis were characterized and analysed through culture-independent sequencing.With high coverage in 18 samples (>0.999), a more complicated community was apparent after comparing with previous leech studies. A total of 779/939 OTUs of bacteria and fungi were detected from leech guts. The bacterial community was dominated by the phylum Bacteroidetes and Synergistetes. Genera Mucinivorans and Fretibacterium accounted mostly at the genus level, and genus Aeromonas showed an extremely low abundance (2.02%) on average. The fungal community was dominated by the phylum Ascomycota and Basidiomycota. At the genus level, the dominant OTUs included Mortierella, Geminibasidium and Fusarium. The analysis of core taxa included those above dominant genera and some low-abundance genera (>1%). The functional annotation of the bacterial community showed a close correlation with metabolism (34.8 ± 0.6%). Some fungal species were predicted as opportunistic human pathogens including Fusarium and Chaetomiaceae.The present study provides fundamental rationales for further studies of such issues as bacteria-fungi-host interactions, host fitness, potential pathogens, and infecting risks after leeching. It shall facilitate in-depth explorations on the safe utilization of leech therapy.Present paper is the first-ever exploration on microbiota of a prevalent Asian medicinal leech based on culture-independent technical. And it is also the first report of gut fungi community of medicinal leech. The diversity and composition of bacteria in P. manillensis was far different from that of the European leech. The main components and core OTUs indicate a particular gut environment of medicinal leech. Unknown bacterial and fungal species were also recovered from leech gut.© 2022 Society for Applied Microbiology.

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出版当年[2022]版：

大类 | 3 区生物学

小类 | 3 区微生物学 3 区生物工程与应用微生物

最新[2025]版：

大类 | 3 区生物学

小类 | 3 区生物工程与应用微生物 4 区微生物学

第一作者：

第一作者机构： [1]Department of Medical Parasitology, School of Basic Medicine, Central South University, Changsha, Hunan, China [*1]Department of Medical Parasitology, School of Basic Medicine, Central South University, Changsha, Hunan, China

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通讯机构： [1]Department of Medical Parasitology, School of Basic Medicine, Central South University, Changsha, Hunan, China [*1]Department of Medical Parasitology, School of Basic Medicine, Central South University, Changsha, Hunan, China

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Insights into gut microbiota communities of Poecilobdella manillensis, a prevalent Asian medicinal leech

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