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多位点测序揭示了来自巴西中西部城市森林碎片的环尾浣熊(食肉目:浣熊科)中假定的新型无形体科病原体,“杜姆勒埃立克体”和[未命名物种]。

Multi-Locus Sequencing Reveals Putative Novel Anaplasmataceae Agents, ' Ehrlichia dumleri' and sp., in Ring-Tailed Coatis (Carnivora: ) from Urban Forested Fragments at Midwestern Brazil.

作者信息

Perles Lívia, Herrera Heitor M, Barreto Wanessa T G, de Macedo Gabriel C, Calchi Ana C, Machado Rosangela Z, André Marcos R

机构信息

Vector-Borne Bioagents Laboratory (VBBL), Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Via de Acesso Prof. Paulo Donato Castellane, s/n, Zona Rural, Jaboticabal 14884-900, SP, Brazil.

Laboratory of Parasitic Biology, Environmental Sciences and Farming Sustainability, Dom Bosco Catholic University, Campo Grande 13471-410, MS, Brazil.

出版信息

Microorganisms. 2022 Nov 30;10(12):2379. doi: 10.3390/microorganisms10122379.

Abstract

The Anaplasmataceae family encompasses obligate intracellular α-proteobacteria of human and veterinary medicine importance. This study performed multi-locus sequencing to characterize and in coati's blood samples in Midwestern Brazil. Twenty-five samples (25/165-15.1%) were positive in the screening PCR based on the gene of spp. and were characterized using 16S rRNA, , , and genes and the 23S-5S intergenic space region (ITS). Phylogenetic analyses based on all six molecular markers positioned the sequences into a new clade, with a common origin of . Haplotype analyses of 16S RNA sequences revealed the presence of two distinct genotypes. Six samples (6/165, 3.6%) were positive in the screening nPCR for the 16S rRNA gene of spp. and were submitted to an additional PCR targeting the ITS for molecular characterization. Phylogenetic analyses based on both 16S rRNA gene and ITS positioned the sp. detected in the present study in a large clade with other sp. previously detected in ticks and wild animals and in a clade with ' Anaplasma brasiliensis', respectively. Based on distinct molecular markers, the present work described a putative novel Anaplasmataceae agent, namely ' Ehrlichia dumleri', and sp. closely related to the previously described ' Anaplasma brasiliensis'.

摘要

无形体科包含对人类医学和兽医学具有重要意义的专性细胞内α-变形菌。本研究进行了多位点测序,以对巴西中西部 coatis 血液样本中的无形体进行特征描述。基于无形体 spp. 的基因,在筛选 PCR 中有 25 个样本(25/165,15.1%)呈阳性,并使用 16S rRNA、、、和基因以及 23S - 5S 基因间隔区(ITS)进行特征分析。基于所有六个分子标记的系统发育分析将序列定位到一个新的进化枝中,其起源相同。16S RNA 序列的单倍型分析揭示了存在两种不同的无形体基因型。在针对无形体 spp. 的 16S rRNA 基因的筛选巢式 PCR 中有 6 个样本(6/165,3.6%)呈阳性,并进行了针对 ITS 的额外 PCR 以进行分子特征分析。基于 16S rRNA 基因和 ITS 的系统发育分析分别将本研究中检测到的无形体 sp. 定位到一个大的进化枝中,该进化枝与之前在蜱和野生动物中检测到的其他无形体 sp. 在一起,以及与“巴西无形体”在一个进化枝中。基于不同的分子标记,本研究描述了一种假定的新型无形体科病原体,即“杜氏埃立克体”,以及与之前描述的“巴西无形体”密切相关的无形体 sp.。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f29/9784859/305fcb0ab8e3/microorganisms-10-02379-g001.jpg

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