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首页> 外文期刊>The ISME journal emultidisciplinary journal of microbial ecology >Diversity and metabolism of Woeseiales bacteria, global members of marine sediment communities
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Diversity and metabolism of Woeseiales bacteria, global members of marine sediment communities

机译：Woesiales细菌的多样性和新陈代谢，海洋沉积物社区的全球成员

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摘要

Surveys of 16S rRNA gene sequences derived from marine sediments have indicated that a widely distributed group of Gammaproteobacteria, named "JTB255-Marine Benthic Group" (now the candidate order Woeseiales), accounts for 1-22% of the retrieved sequences. Despite their ubiquity in seafloor communities, little is known about their distribution and specific ecological niches in the deep sea, which constitutes the largest biome globally. Here, we characterized the phylogeny, environmental distribution patterns, abundance, and metabolic potential of Woeseiales bacteria with a focus on representatives from the deep sea. From a phylogenetic analysis of publicly available 16S rRNA gene sequences (>= 1400 bp, n = 994), we identified lineages of Woeseiales with greater prevalence in the deep sea than in coastal environments, a pattern corroborated by the distribution of 16S oligotypes recovered from 28 globally distributed sediment samples. Cell counts revealed that Woeseiales bacteria accounted for 5 +/- 2% of all microbial cells in deep-sea surface sediments at 23 globally distributed sites. Comparative analyses of a genome, metagenome bins, and single-cell genomes suggested that members of the corresponding clades are likely to grow on proteinaceous matter, potentially derived from detrital cell membranes, cell walls, and other organic remnants in marine sediments.
机译：来自海洋沉积物的16S rRNA基因序列的调查表明，一种广泛分布的伽血曲霉菌，名为“JTB255-Marine Benthic Group”（现在的候选命令Woesiales），占1-22％的检索序列。尽管他们在海底社区中有不好处，但对深海的分布和特定生态利基知之甚少，这在深海中构成了全球最大的生物群落。在这里，我们的特征在于Woesiales细菌的系统发育，环境分布模式，丰度和代谢潜力，重点关注深海代表。从公共可用的16S rRNA基因序列的系统发育分析（> = 1400bp，n = 994），我们鉴定了深海患病率较高的Woesiales的谱系，而不是在沿海环境，由16S的分布恢复的分布有所证实的模式28全球分布沉积物样品。细胞计数揭示了两种全部分布位点的深海地表沉积物中所有微生物细胞的5 +/- 2％。基因组，偏心组箱和单细胞基因组的比较分析表明，相应的片状的成员可能在蛋白质物质上生长，可能衍生自滴乳细胞膜，细胞壁和海洋沉积物中的其他有机残余物。

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