Methane oxidation by an extremely acidophilic bacterium of the phylum Verrucomicrobia.

Methane oxidation by an extremely acidophilic bacterium of the phylum Verrucomicrobia. Research Abstract Details 

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Methane oxidation by an extremely acidophilic bacterium of the phylum Verrucomicrobia. Abstract Text:

Peter F Dunfield,Anton Yuryev,Pavel Senin,Angela V Smirnova,Matthew B Stott,Shaobin Hou,Binh Ly,Jimmy H Saw,Zhemin Zhou,Yan Ren,Jianmei Wang,Bruce W Mountain,Michelle A Crowe,Tina M Weatherby,Paul L E Bodelier,Werner Liesack,Lu Feng,Lei Wang,Maqsudul Alam,Peter F Dunfield,Anton Yuryev,Pavel Senin,Angela V Smirnova,Matthew B Stott,Shaobin Hou,Binh Ly,Jimmy H Saw,Zhemin Zhou,Yan Ren,Jianmei Wang,Bruce W Mountain,Michelle A Crowe,Tina M Weatherby,Paul L E Bodelier,Werner Liesack,Lu Feng,Lei Wang,Maqsudul Alam,Peter F Dunfield,Anton Yuryev,Pavel Senin,Angela V Smirnova,Matthew B Stott,Shaobin Hou,Binh Ly,Jimmy H Saw,Zhemin Zhou,Yan Ren,Jianmei Wang,Bruce W Mountain,Michelle A Crowe,Tina M Weatherby,Paul L E Bodelier,Werner Liesack,Lu Feng,Lei Wang,Maqsudul Alam,

Aerobic methanotrophic bacteria consume methane as it diffuses away from methanogenic zones of soil and sediment. They act as a biofilter to reduce methane emissions to the atmosphere, and they are therefore targets in strategies to combat global climate change. No cultured methanotroph grows optimally below pH 5, but some environments with active methane cycles are very acidic. Here we describe an extremely acidophilic methanotroph that grows optimally at pH 2.0-2.5. Unlike the known methanotrophs, it does not belong to the phylum Proteobacteria but rather to the Verrucomicrobia, a widespread and diverse bacterial phylum that primarily comprises uncultivated species with unknown genotypes. Analysis of its draft genome detected genes encoding particulate methane monooxygenase that were homologous to genes found in methanotrophic proteobacteria. However, known genetic modules for methanol and formaldehyde oxidation were incomplete or missing, suggesting that the bacterium uses some novel methylotrophic pathways. Phylogenetic analysis of its three pmoA genes (encoding a subunit of particulate methane monooxygenase) placed them into a distinct cluster from proteobacterial homologues. This indicates an ancient divergence of Verrucomicrobia and Proteobacteria methanotrophs rather than a recent horizontal gene transfer of methanotrophic ability. The findings show that methanotrophy in the Bacteria is more taxonomically, ecologically and genetically diverse than previously thought, and that previous studies have failed to assess the full diversity of methanotrophs in acidic environments.

Methane oxidation by an extremely acidophilic bacterium of the phylum Verrucomicrobia. Publishing Authors By Initials

PF Dunfield,A Yuryev,P Senin,AV Smirnova,MB Stott,S Hou,B Ly,JH Saw,Z Zhou,Y Ren,J Wang,BW Mountain,MA Crowe,TM Weatherby,PL Bodelier,W Liesack,L Feng,L Wang,M Alam,PF Dunfield,A Yuryev,P Senin,AV Smirnova,MB Stott,S Hou,B Ly,JH Saw,Z Zhou,Y Ren,J Wang,BW Mountain,MA Crowe,TM Weatherby,PL Bodelier,W Liesack,L Feng,L Wang,M Alam,PF Dunfield,A Yuryev,P Senin,AV Smirnova,MB Stott,S Hou,B Ly,JH Saw,Z Zhou,Y Ren,J Wang,BW Mountain,MA Crowe,TM Weatherby,PL Bodelier,W Liesack,L Feng,L Wang,M Alam,

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Methane oxidation by an extremely acidophilic bacterium of the phylum Verrucomicrobia. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Nature

VOLUME: 450

Page Numbers: 879-82

Journal Abbreviation: Nature

ISSN: 1476-4687

DAY: 14

MONTH: 11

YEAR: 2007

Methane oxidation by an extremely acidophilic bacterium of the phylum Verrucomicrobia. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Methane oxidation by an extremely acidophilic bacterium of the phylum Verrucomicrobia.

AFFILIATION: [1] GNS Science, Extremophile Research Group, Private Bag 2000, Taupo, New Zealand [2] Present address: Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada.

Country: England

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MEDLINETA: Nature

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