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DMTB:A comprehensive online resource of 16s rRNA genes,ecological metadata,oligonucleotides,and magnetic properties of magnetotactic bacteria

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chinese science Bulletin 2011年第6期56卷 476-478页

作者： lin wei1,2. li bi1,{2.,2.1 paleomagnetism and geochronology laboratory, key laboratory of the earth’s deep interior, institute of geology and geophysics, chinese academy of sciences, beijing 10002., china 2.France-china bio-Mineralization and Nano-structures laboratory, institute of geology and geophysics, chinese academy of sciences, beijing 10002., china paleomagnetism and geochronology {2. Key Laboratory of the Earth’s Deep Interior Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China France-china bio-Mineralization and Nano-structures laboratory Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China

Magnetotactic bacteria (MTB) are of interest in microbiology, biomineralization, advanced magnetic materials, and bio-geo-sciences because of their ability to form highly ordered intracellular magnetic minerals. Great strides for MTB studies have been made in the past four decades. In this paper we complied the first internet-accessible database for MTB, Database of Magnestotactic Bacteria (DMTB). It contains information of 16s rRNA gene sequences, corresponding ecological metadata, oligonucleotides, and magnetic properties of MTB. The comprehensive information contained in DMTB will provide a very useful data resource for researchers from different disciplines. The website of DMTB is at http://***/.

关键词： rRNA基因序列趋磁细菌 16s 网上资源寡核苷酸磁学性质生态磁性材料

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DMTB:A comprehensive online resource of 16s rRNA genes,ecological metadata,oligonucleotides,and magnetic properties of magnetotactic bacteria

DMTB:A comprehensive online resource of 16S rRNA genes,ecolo...

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中国科学院地质与地球物理研究所第11届（2.11年度）学术年会

作者： lin wei~(1,2),li bi~(1,2) & pan yongxin~(1,2) 1 paleomagnetism and geochronology laboratory,key laboratory of the earth’s deep interior,institute of geology and geophysics,chinese academy of sciences,beijing 10002.,china 2 France-china bio-Mineralization and Nano-structures laboratory,institute of geology and geophysics,chinese academy of sciences,beijing 10002.,china

Magnetotactic bacteria(MTB) are of interest in microbiology,biomineralization,advanced magnetic materials,and bio-geo-sciences because of their ability to form highly ordered intracellular magnetic *** strides for MTB studies have been made in the past four *** this paper we complied the first internet-accessible database for MTB,Database of Magnestotactic Bacteria(DMTB).It contains information of 16s rRNA gene sequences,corresponding ecological metadata,oligonucleotides, and magnetic properties of *** comprehensive information contained in DMTB will provide a very useful data resource for researchers from different *** website of DMTB is at http://***/.

关键词： magnetotactic bacteria biomineralization database

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A biogeographic distribution of magnetotactic bacteria influenced by salinity

A biogeographic distribution of magnetotactic bacteria influ...

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中国科学院地质与地球物理研究所2.12.度（第12.）学术年会

作者： wei lin Yinzhao Wang bi li {2. pan biogeomagnetism Group Paleomagnetism and Geochronology LaboratoryKey Laboratory of the Earth's Deep InteriorInstitute of Geology and GeophysicsGhinese Academy of Sciences France-china bio-Mineralization and Nano-structures laboratory Chinese Academy of Sciences

Magnetotactic bacteria(MTB),which synthesize intracellular ferromagnetic magnetite and/or greigite magnetosomes,have significant roles in global iron cycling in aquatic systems,as well as sedimentary *** occurrence of MTB has been reported in aquatic environments from freshwater to marine ecosystems;however,the distribution of MTB across heterogeneous habitats remains *** we examined the MTB communities from diverse habitats across northern and southern china,using comprehensive transmission electron microscopy and comparison of 16s rRNA gene analyses.A total of 334 16s rRNA gene sequences were analyzed,representing the most comprehensive analysis on the diversity and distribution of MTB to *** majority(95%) of sequences belong to the Alphaproteobactena,whereas a population of giant magnetotactic rod is affiliated with the Nitrospirae *** a statistical comparison of these sequence data and publicly available MTB sequences,we infer for the first time that the composition of MTB communities represents a biogeographic distribution across globally heterogeneous environments, which is influenced by salinity.

关键词： magnetotactic bacteria biogeography microbial diversity salinity

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Newly Isolated but Uncultivated Magnetotactic Bacterium of the Phylum Nitrospirae from beijing,china

Newly Isolated but Uncultivated Magnetotactic Bacterium of t...

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中国科学院地质与地球物理研究所2.12.度（第12.）学术年会

作者： wei lin Jinhua li {2. pan biogeomagnetism Group Paleomagnetism and Geochronology LaboratoryKey Laboratory of the Earth’s Deep InteriorInstitute of Geology and GeophysicsChinese Academy of Sciencesand France-China Bio-Mineralization and Nano-Structures LaboratoryChinese Academy of Sciences

Magnetotactic bacteria(MTB) in the phylum Nitrospirae synthesize up to hundreds of intracellular bullet-shaped magnetite *** the present study,a watermelon-shaped magnetotactic bacterium(designated MWB-1) from Lake Beihai in beijing,china,was *** uncultivated microbe was identified as a member of the phylum Nitrospirae and represents a novel phylogenetic {2.eage with≥6%16s rRNA gene sequence divergence from all currently described ***-1

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High Diversity of Magnetotactic Deltaproteobacteria in a Freshwater Niche

High Diversity of Magnetotactic Deltaproteobacteria in a Fre...

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中国科学院地质与地球物理研究所2.13年度（第13届）学术年会

作者： Yinzhao Wang wei lin Jinhua li {2. pan biogeomagnetism Group Paleomagnetism and Geochronology LaboratoryKey Laboratory of the Earth's Deep InteriorInstitute of Geology and GeophysicsChinese Academy of Sciences France-china bio-Mineralization and Nano-structures laboratory Institute of Geology and GeophysicsChinese Academy of Sciences Graduate University of chinese academy of sciences

Knowledge of the diversity of magnetotactic bacteria in natural environments is crucial for understanding their contribution to various biological and geological *** we report a high diversity of magnetotactic bacteria in a freshwater *** out of 18 operational taxonomic units(OTUs) were affiliated with the *** rod-shaped bacteria simultaneously synthesized greigite and magnetite magnetosomes.

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Genomic insights into the uncultured genus‘Candidatus Magnetobacterium' in the phylum Nitrospirae

Genomic insights into the uncultured genus‘Candidatus Magne...

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中国科学院地质与地球物理研究所2.14年度（第14届）学术年会

作者： wei lin Aihua Deng Zhang Wang Ying li Tingyi Wen Long-Fei Wu Martin Wu {2. pan biogeomagnetism Group Paleomagnetism and Geochronology LaboratoryKey Laboratory of the Earth’s Deep InteriorInstitute of Geology and GeophysicsChinese Academy of Sciences France-china bio-Mineralization and Nano-structures laboratory Chinese Academy of Sciences CAs key laboratory of Microbial Physiological and Metabolic Engineering Institute of MicrobiologyChinese Academy of Sciences Department of biology University of VirginiaCharlottesvilleVAUSA state key laboratory of Agro-biotechnology and Laboratoire International Associe Franco-Chinois de bio-Mineralisation et Nano-structures College of Biological SciencesChina Agricultural University Laboratoire de Chimie Bacte′rienne Aix-Marseille UniversiteCNRSMarseille Cedex 20France

Magnetotactic bacteria(MTB)of the genus‘Candidatus Magnetobacterium’in phylum Nitrospirae are of great interest because of the formation of hundreds of bullet-shaped magnetite magnetosomes in multiple bundles of chains per *** bacteria are worldwide distributed in aquatic environments and have important roles in the biogeochemical cycles of iron and ***,except for a few short genomic fragments,no genome data are available for this ecologically important genus,and little is known about their metabolic capacity owing to the lack of pure *** we report the first draft genome sequence of 3.42.Mb from an uncultivated strain tentatively named‘*** casensis’isolated from Lake Miyun,*** genome sequence indicates an autotrophic lifestyle using the Wood–Ljungdahl pathway for CO2.ixation,which has not been described in any previously known MTB or Nitrospirae *** involved in the denitrification,sulfur oxidation and sulfate reduction have been predicted,indicating its considerable capacity for adaptation to variable geochemical conditions and roles in local biogeochemical ***,we have identified a complete magnetosome gene island containing mam,mad and a set of novel genes(named as man genes)putatively responsible for the formation of bullet-shaped magnetite magnetosomes and the arrangement of multiple magnetosome *** first comprehensive genomic analysis sheds light on the physiology,ecology and biomineralization of the poorly understood‘***’genus.

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