Genome sequence of five Zetaproteobacteria metagenome-assembled genomes recovered from hydrothermal vent Longqi, Southwest Indian Ridge

IF 1.3 4区生物学 Q4 GENETICS & HEREDITY

Marine genomics Pub Date : 2022-06-01 DOI:10.1016/j.margen.2022.100936

Ying-Wen Zhong , Peng Zhou , Hong Cheng , Xue-Wei Xu , Yue-Hong Wu

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引用次数: 3

Abstract

Southwest Indian Ridge (SWIR) increasingly becomes the hot spot of deep-sea mining and extreme life research. Strategies for future environmental conservation are undoubtedly required which makes investigation of microbial iron metabolisms imperative. Through deep metagenome sequencing, five iron-oxidizing Zetaproteoabacteria metagenome-assembled genomes were recovered from Longqi hydrothermal vent in the SWIR. Phylogenetic analysis revealed that two of the MAGs might represent novel genus in Zetaproteobacteria while other MAGs were related to Mariprofundus. Functional profile suggested that they might be aerobic chemolithoautotrophic species with genes encoding cytochrome c oxidase, iron oxidase cyc2 homologs and carbon fixation CBB pathway. Versatile capabilities of synthesizing diverse amino acids and cofactors were indicated while possession of various metal ion transporters could be vital to heavy metal resistance. Our work has provided more understanding about phylogenetic and functional features of iron-oxidizing Zetaproteobacteria, which might be important to investigate iron biogeochemistry and mineral oxidation in SWIR.

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西南印度洋脊龙旗热液喷口5个Zetaproteobacteria metagenome组装基因组的基因组序列

西南印度洋脊日益成为深海采矿和极端生命研究的热点。对微生物铁代谢的研究无疑是未来环境保护的必要策略。通过深度宏基因组测序，在SWIR中从龙起热液喷口中恢复了5个铁氧化zetaproteoabobacterium的宏基因组组装基因组。系统发育分析表明，其中2个MAGs可能是Zetaproteobacteria的新属，而其他MAGs与Mariprofundus有亲缘关系。功能分析表明，它们可能是有氧化能自养物种，具有细胞色素c氧化酶、铁氧化酶cyc2同源物和碳固定CBB途径的基因。合成多种氨基酸和辅助因子的多种能力被指出，而拥有各种金属离子转运体可能对重金属抗性至关重要。本研究为进一步了解铁氧化Zetaproteobacteria的系统发育和功能特征提供了新的思路，对研究SWIR中铁生物地球化学和矿物氧化具有重要意义。

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来源期刊

Marine genomics 生物-遗传学

CiteScore

3.60

自引率

5.30%

发文量

审稿时长

29 days

期刊介绍： The journal publishes papers on all functional and evolutionary aspects of genes, chromatin, chromosomes and (meta)genomes of marine (and freshwater) organisms. It deals with new genome-enabled insights into the broader framework of environmental science. Topics within the scope of this journal include: • Population genomics and ecology • Evolutionary and developmental genomics • Comparative genomics • Metagenomics • Environmental genomics • Systems biology More specific topics include: geographic and phylogenomic characterization of aquatic organisms, metabolic capacities and pathways of organisms and communities, biogeochemical cycles, genomics and integrative approaches applied to microbial ecology including (meta)transcriptomics and (meta)proteomics, tracking of infectious diseases, environmental stress, global climate change and ecosystem modelling.