一种新的自由生活的内生鞭毛软尾纲动物，repens gen. Nov., sp. Nov.

IF 1.9 3区生物学 Q4 MICROBIOLOGY

Protist Pub Date : 2025-04-14 DOI:10.1016/j.protis.2025.126101

Takashi Shiratori, Ken-ichiro Ishida

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引用次数: 0

摘要

Endomyxa由多种多样的原生生物组成，包括自由生活的变形虫和寄生虫，它们感染各种宿主。在这项研究中，我们报道了一种新的自由生活的变形虫鞭毛虫，粘尾虫repens gen. Nov., sp. Nov.，从日本八丈岛附近的海水中分离出来。双鞭毛虫是一种滑翔的菌食性双鞭毛虫，偶尔从其后端伸出假足。基于小亚基核糖体RNA基因序列的分子系统发育分析表明，V. repens是由endoomyxan Ascetosporea和Gromiidea组成的分支的姐妹谱系。超微结构观察显示，长尾草有4根微管根（R1-R4），但缺乏广泛分布于尾虫鞭毛类动物的独特微管带vp2。根据其形态、超微结构和系统发育位置，我们提出了一种新的属和种。

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A novel free-living endomyxan flagellate Viscidocauda repens gen. Nov., sp. nov

Endomyxa comprises a diverse group of protists, including free-living amoebae and parasites, that infect various hosts. In this study, we report a new free-living amoeboflagellate, Viscidocauda repens gen. Nov., sp. nov., isolated from seawater near Hachijojima Island, Japan. V. repens is a gliding bacterivorous biflagellate and occasionally extends pseudopodia from its posterior end. Molecular phylogenetic analysis based on small subunit ribosomal RNA gene sequences places V. repens as sister lineage to a clade comprising the endomyxan Ascetosporea and Gromiidea. Ultrastructural observations revealed that V. repens has four microtubular roots (R1–R4), but lacks vp2, a unique microtubular band widely distributed among cercozoan flagellates. Based on its morphology, ultrastructure, and phylogenetic position, we propose V. repens as a new genus and species within Endomyxa.

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来源期刊

Protist 生物-微生物学

CiteScore

3.60

自引率

4.00%

发文量

审稿时长

18.7 weeks

期刊介绍： Protist is the international forum for reporting substantial and novel findings in any area of research on protists. The criteria for acceptance of manuscripts are scientific excellence, significance, and interest for a broad readership. Suitable subject areas include: molecular, cell and developmental biology, biochemistry, systematics and phylogeny, and ecology of protists. Both autotrophic and heterotrophic protists as well as parasites are covered. The journal publishes original papers, short historical perspectives and includes a news and views section.