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Globally Distributed Uncultivated Oceanic N₂-Fixing Cyanobacteria Lack Oxygenic Photosystem II

Zehr, Jonathan P ; Bench, Shellie R ; Carter, Brandon J ; Hewson, Ian ; Niazi, Faheem ; Shi, Tuo ; Tripp, H. James ; Affourtit, Jason P

Science (American Association for the Advancement of Science), 2008-11, Vol.322 (5904), p.1110-1112 [Periódico revisado por pares]

Washington, DC: American Association for the Advancement of Science

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Título:
Globally Distributed Uncultivated Oceanic N₂-Fixing Cyanobacteria Lack Oxygenic Photosystem II
Autor: Zehr, Jonathan P ; Bench, Shellie R ; Carter, Brandon J ; Hewson, Ian ; Niazi, Faheem ; Shi, Tuo ; Tripp, H. James ; Affourtit, Jason P
Assuntos: Animal, plant and microbial ecology ; Archaeal genes ; Bacteria ; Biological and medical sciences ; Biological evolution ; Carbon ; Cells ; Cyanobacteria ; Cyanobacteria - cytology ; Cyanobacteria - genetics ; Cyanobacteria - isolation & purification ; Cyanobacteria - metabolism ; Cyanophyta ; Evolution, Molecular ; Flow Cytometry ; Fluorescence ; Fundamental and applied biological sciences. Psychology ; Genes, Bacterial ; Genes, rRNA ; Genetics of eukaryotes. Biological and molecular evolution ; Genome, Bacterial ; Genomes ; Genomics ; Genomics - methods ; Geochemistry ; Marine ; Metagenomics ; Microbial ecology ; Molecular Sequence Data ; Nitrogen ; Nitrogen Fixation - genetics ; Oceanography ; Oceans ; Oxidoreductases - genetics ; Pacific Ocean ; Photosynthesis ; Photosystem II Protein Complex - genetics ; Photosystem II Protein Complex - metabolism ; Phylogeny ; Seawater - microbiology ; Symbionts ; Various environments (extraatmospheric space, air, water)
É parte de: Science (American Association for the Advancement of Science), 2008-11, Vol.322 (5904), p.1110-1112
Notas: ObjectType-Article-1
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Descrição: Biological nitrogen (N₂) fixation is important in controlling biological productivity and carbon flux in the oceans. Unicellular N₂-fixing cyanobacteria have only recently been discovered and are widely distributed in tropical and subtropical seas. Metagenomic analysis of flow cytometry-sorted cells shows that unicellular N₂-fixing cyanobacteria in "group A" (UCYN-A) lack genes for the oxygen-evolving photosystem II and for carbon fixation, which has implications for oceanic carbon and nitrogen cycling and raises questions regarding the evolution of photosynthesis and N₂ fixation on Earth.
Editor: Washington, DC: American Association for the Advancement of Science
Idioma: Inglês

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Globally Distributed Uncultivated Oceanic N₂-Fixing Cyanobacteria Lack Oxygenic Photosystem II

Zehr, Jonathan P ; Bench, Shellie R ; Carter, Brandon J ; Hewson, Ian ; Niazi, Faheem ; Shi, Tuo ; Tripp, H. James ; Affourtit, Jason P

Washington, DC: American Association for the Advancement of Science

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