Taxonomy of the apicomplexan symbionts of coral, including Corallicolida ord. nov., reassignment of the genus Gemmocystis, and description of new species Corallicola aquarius gen. nov. sp. nov. and Anthozoaphila gnarlus gen. nov. sp. nov

Taxonomy of the apicomplexan symbionts of coral, including Corallicolida ord. nov., reassignment of the genus Gemmocystis, and description of new species Corallicola aquarius gen. nov. sp. nov. and Anthozoaphila gnarlus gen. nov. sp. nov
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珊瑚顶端复合体共生体的分类,包括珊瑚科。

DOI:
10.1101/2020.11.23.395046
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发表时间:
2020
期刊:
--
影响因子:
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通讯作者:
Kwong W
Kwong W
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作者:
Kwong W

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珊瑚(后生动物;刺胞动物;珊瑚虫)最近被证明是广泛和多样化的顶复合体门细胞内共生体的宿主。这些共生体俗称“珊瑚虫”,大多是通过分子分析而知道的,尚未提出正式的分类。另一种顶复合体属gemmocystiscyllindrus(来自coralDendrogyracylindrus)可能与珊瑚类有关,但缺乏分子资料。在这里,我们用显微镜(光、扫描电镜和透射电镜)和分子系统发育分析分离和描述了活动滋养体(摄食)珊瑚细胞,为正式描述提供了基础。系统发育分析使用核和质体rRNA操纵子,以及来自单细胞转录组的三个线粒体蛋白序列,都证实这些生物属于顶复合体中一个离散的深分支分支,与任何已知的物种或主要亚群都没有密切的关系。因此,我们将这一进化支归属于一个新的目,Corallicolida ord. nov.和科,Corallicolidae fam。11 .我们描述了一个模式物种,Corallicolaaquariusgen。11月11日,11月11日。寄主,也描述了第二个物种,anththozoaphilagnarlusgen。11月11日,从珊瑚宿主madracismirabilis。最后,我们提出了重新分配相关分类的建议。根据其形态和寄主定位的相似性,从Agamococcidiorida目的到Corallicolida的圆柱。
Corals (Metazoa; Cnidaria; Anthozoa) have recently been shown to play host to a widespread and diverse group of intracellular symbionts of the phylum Apicomplexa. These symbionts, colloquially called “corallicolids”, are mostly known through molecular analyses, and no formal taxonomy has been proposed. Another apicomplexan,Gemmocystiscylindrus(described from the coralDendrogyracylindrus), may be related to corallicolids, but lacks molecular data. Here, we isolate and describe motile trophozoite (feeding) corallicolids cells using microscopic (light, SEM, and TEM) and molecular phylogenetic analysis to provide the basis for a formal description. Phylogenetic analyses using nuclear and plastid rRNA operons, and three mitochondrial protein sequences derived from single cell transcriptomes, all confirm that these organisms fall into a discrete deep‐branching clade within the Apicomplexa not closely related to any known species or major subgroup. As a result, we assign this clade to a new order, Corallicolida ord. nov., and family, Corallicolidae fam. nov. We describe a type species,Corallicolaaquariusgen. nov. sp. nov. from itsRhodactissp. host, and also describe a second species,Anthozoaphilagnarlusgen. nov. sp. nov., from the coral hostMadracismirabilis. Finally, we propose reassigning the incertae sedis taxonG.cylindrusfrom the order Agamococcidiorida to the Corallicolida, based on similarities in morphology and host localization to that of the corallicolids.
来自加勒比石珊瑚的一种新的、不寻常的球虫种(Apicomplexa:Agamococcidiorida)
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