Lecture3MarineBacteria

Lecture3MarineBacteria - Marine Bacteria Introduction to...

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Introduction to Biological Oceanography (3): John Cullen Marine Bacteria
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Introduction to Biological Oceanography (3): John Cullen From Carl Woese, presented at http://nai.arc.nasa.gov/news_stories/news_detail.cfm?ID=274 Similarities based on 16s ribosomal RNA (not morphology) Woese et al. 1990. PNAS 87, 4576
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Introduction to Biological Oceanography (3): John Cullen Giovannoni and Stingl Bacteria Archaea Also in hydrothermal vents
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Introduction to Biological Oceanography (3): John Cullen Marine Bacteria Genetically diverse and functionally diverse May be heterotrophic OR autotrophic Metabolic modes vary: phototrophic (use light as energy source) or chemotrophic (gain energy from oxidation of reduced chemicals including organic and inorganic compounds) May also be distinguished based on source of elements and reducing equivalents (electrons) used for biosynthesis, e.g. lithotrophs can exist solely on inorganic compounds, organotrophs require organic compounds for biosynthesis.
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Introduction to Biological Oceanography (3): John Cullen From Miller, Ch. 5 (Fig 5.3) 16S ribosomal RNA shows 18 groups Proteobacteria include α, β, γ , δ, ε
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Introduction to Biological Oceanography (3): John Cullen Giovannoni and Stingl Bacteria Archaea * Means cultured isolates are available Also in hydrothermal vents
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Introduction to Biological Oceanography (3): John Cullen Miller, Fig 5.4 Frequencies of bacterial types identified from 578 DNA clones of 16S rRNA Relative abundances of groups probably reflects relative abundances in the ocean SAR11 is ~ 25% of pelagic bacteria Is now cultured, clade is named Pelagibacter ubique (Rappé et al. 2002) SAR = Sargasso Sea
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Introduction to Biological Oceanography (3): John Cullen Giovannoni and Stingl Bacteria Archaea * Means cultured isolates are available Also in hydrothermal vents
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Introduction to Biological Oceanography (3): John Cullen From Rappé et al. 2002 Nature 418: 630-633 Latex bead – 0.514 μ m
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Introduction to Biological Oceanography (3): John Cullen From Rappé et al. 2002 Nature 418: 630-633
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Introduction to Biological Oceanography (3): John Cullen Process Reductant + Oxidant Yield Aerobic respiration
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This note was uploaded on 12/12/2011 for the course BIOL 450 taught by Professor Ms.richardson during the Fall '10 term at South Carolina.

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Lecture3MarineBacteria - Marine Bacteria Introduction to...

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