A New Mayorella Species Isolated from the Mariana Trench Area (Pacific Ocean)

IF 1.9 3区生物学 Q4 MICROBIOLOGY

Protist Pub Date : 2023-06-01 DOI:10.1016/j.protis.2023.125958

Xiaoli Lei , Xiaojuan Chen , Jianming Chen , Chen Liang

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引用次数: 0

Abstract

In this paper, we describe a new naked amoeba species, Mayorella marianaensis sp. n., order Dermamoebida, isolated from the bottom of the Pacific Ocean (>3,000 m depth) in the vicinity of the Mariana Trench, based on morphological and molecular data. The newly discovered species was identified based on morphological and molecular data. This is the first time that a Mayorella species was discovered in the deep sea (>1,000 m). Mayorella marianaensis is an irregularly rectangular naked amoeba (30–120 × 11–60 µm), with a narrow frontal hyaline area. Four to 15 conical sub-pseudopodia, and three kinds of floating forms are identified. Trophozoites have a thick cell coat consisting of two distinct layers. The small subunit ribosomal RNA gene phylogeny showed that M. marianaensis is classified into Dermamoebida, and is a sister clade to other Mayorella species whose sequences are available. BLAST analysis revealed that M. marianaensis is most similar to Coronamoeba villafranca and Mayorella sp. JJP-2003, with sequence identities of 92.43% and 88.30%, respectively.

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太平洋马里亚纳海沟一新种

本文描述了一种新的裸变形虫，Mayorella marianaensis sp. n.， Dermamoebida目，分离自马里亚纳海沟附近的太平洋底部(> 3000 m深度)。根据形态学和分子数据对新发现的物种进行了鉴定。这是首次在深海(> 1000 m)中发现Mayorella marianensis。Mayorella marianensis是一种不规则的矩形裸变形虫(30-120 × 11-60µm)，具有狭窄的额透明区。有4 ~ 15个锥形伪足，有3种浮动形态。滋养体有一层厚厚的细胞外壳，由两层不同的细胞组成。小亚基核糖体RNA基因系统发育表明，M. marianaensis属于皮蝇属，与其他已获得序列的Mayorella物种是姐妹分支。BLAST分析结果显示，马里亚纳支原体与villafranca冠状变形虫和Mayorella sp. JJP-2003序列相似性最高，序列同源性分别为92.43%和88.30%。

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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.