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Characterization and Phylogenetic Analysis of a Novel Uncultivated Magnetotactic Coccus Harbouring Multi-Chain Magnetosomes

文献类型：期刊论文

作者Che, Yuzan1,2; Zhang, Wenyan1,3; Dong, Yi1,3; Liu, Min4; Xiao, Tian1,3; Zhang, Jin-yong2,5; Pan, Hongmiao1,3
刊名ENVIRONMENTAL MICROBIOLOGY REPORTS
出版日期2026-01-11
卷号18期号:1页码:14
关键词magnetosome gene cluster magnetosomes magnetotactic bacteria magnetotactic cocci polyphosphate
ISSN号1758-2229
DOI10.1111/1758-2229.70266
通讯作者Zhang, Jin-yong(zhangjy@ihb.ac.cn) ; Pan, Hongmiao(panhongmiao@qdio.ac.cn)
英文摘要Magnetotactic bacteria (MTB) are a diverse group of microorganisms that synthesize intracellular magnetic nanocrystals termed magnetosomes. In this study, a novel marine magnetotactic coccus, designated strain HHB-1, was magnetically enriched from intertidal sediments in Houhai Bay, southern China. Optical microscopy, electron microscopy and elemental analysis revealed that HHB-1 cells are relatively large coccoid-ovoid bacteria (3.9 +/- 0.3 mu m x 2.8 +/- 0.2 mu m) containing multiple chains of prismatic magnetite magnetosomes and prominent intracellular Ca/Mg-rich polyphosphate (Ca-Mg-polyP) granules. Whole-genome sequencing and phylogenomic analyses revealed that HHB-1 represents a novel and deeply branching lineage within the order Magnetococcales, exhibiting low average amino acid identity (57.3%-58.7%) with previously reported strains. The magnetosome gene cluster (MGC) of HHB-1 comprises a nearly complete set of mam (magnetosome membrane) genes with conserved gene order and structure, representing the first genomic and MGC characterization of a novel magnetococcus possessing multi-chain magnetosomes. These findings expand our understanding of the diversity, biomineralization strategies and evolutionary history of MTB in marine environments.
WOS关键词BACTERIA ; BIOMINERALIZATION ; POLYPHOSPHATE ; MAGNETOCHROME ; TRANSPORT ; GENOMES ; QUALITY ; IRON
资助项目the National Natural Science Foundation of China[42176123]
WOS研究方向Environmental Sciences & Ecology ; Microbiology
语种英语
WOS记录号WOS:001659116700001
出版者WILEY
源URL[http://ir.qdio.ac.cn/handle/337002/204553]  
专题海洋研究所_海洋生态与环境科学重点实验室
通讯作者Zhang, Jin-yong; Pan, Hongmiao
作者单位1.Chinese Acad Sci, Inst Oceanol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
2.Qingdao Agr Univ, Sch Marine Sci & Engn, Lab Aquat Parasitol & Microbial Bioresources, Qingdao, Peoples R China
3.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
4.Hainan Trop Ocean Univ, Yazhou Bay Innovat Inst, Sanya, Peoples R China
5.Pilot Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Che, Yuzan,Zhang, Wenyan,Dong, Yi,et al. Characterization and Phylogenetic Analysis of a Novel Uncultivated Magnetotactic Coccus Harbouring Multi-Chain Magnetosomes[J]. ENVIRONMENTAL MICROBIOLOGY REPORTS,2026,18(1):14.
APA Che, Yuzan.,Zhang, Wenyan.,Dong, Yi.,Liu, Min.,Xiao, Tian.,...&Pan, Hongmiao.(2026).Characterization and Phylogenetic Analysis of a Novel Uncultivated Magnetotactic Coccus Harbouring Multi-Chain Magnetosomes.ENVIRONMENTAL MICROBIOLOGY REPORTS,18(1),14.
MLA Che, Yuzan,et al."Characterization and Phylogenetic Analysis of a Novel Uncultivated Magnetotactic Coccus Harbouring Multi-Chain Magnetosomes".ENVIRONMENTAL MICROBIOLOGY REPORTS 18.1(2026):14.

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来源：海洋研究所

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