The Complete Mitochondrial Genome Sequence of Eimeria kongi (Apicomplexa: Coccidia)

文献类型： 外文期刊

第一作者： Shi, Yubo

作者： Shi, Yubo;Fang, Sufang;Gu, Xiaolong;Hao, Chengyu;Du, Fangchen;Cui, Ping;Shi, Yubo;Tang, Xinming

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关键词： rabbit coccidiosis; Eimeria kongi; mitochondrial genome; phylogenetic analyses

期刊名称：LIFE-BASEL （ 影响因子：3.2； 五年影响因子：3.1 ）

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年卷期： 2024 年 14 卷 6 期

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收录情况： SCI

摘要： Rabbit coccidiosis is caused by infection with one or, more commonly, several Eimeria species that parasitize the hepatobiliary ducts or intestinal epithelium of rabbits. Currently, there are eleven internationally recognized species of rabbit coccidia, with the complete mitochondrial (mt) genomes of six species commonly infecting rabbits having been sequenced and annotated. Eimeria kongi was initially discovered in 2011 and prompted a preliminary study on this species. Through traditional morphological analysis, E. kongi was identified as a novel species of rabbit coccidia. To further validate this classification, we sequenced and annotated its mitochondrial genome. The complete mt genome of E. kongi spans 6258 bp and comprises three cytochrome genes (cytb, cox1, cox3), fourteen gene fragments for the large subunit (LSU) rRNA, and nine gene fragments for the small subunit (SSU) rRNA, lacking transfer RNA (tRNA) genes. Moreover, phylogenetic analysis of the mitochondrial genome sequence of E. kongi revealed its clustering with six other species of rabbit coccidia into a monophyletic group. Additionally, E. irresidua and E. flavescens were grouped within the lineage lacking oocyst residuum, consistent with their morphological characteristics. Consistent with multiple molecular phylogenies, in this investigation, E. kongi was further confirmed as a new species of rabbit coccidia. Our research findings are of great significance for the classification of coccidia and for coccidiosis prevention and control in rabbits.

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