Genus: Methylobacterium

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9 Terms

1
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What are methylotrophs?

Microorganisms that can utilize organic single-carbon (Ca) compounds as their sole source of carbon and energy.

2
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True or false: methylobacterium are methylotrophic bacteria

True

3
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What are the gram the results and morphology of Methylobacterium?

Gram postive to variable pleiomorphic rods

4
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Methylobacterium are facultative for what and cannot grow on what?

They are facultative for C1 utilization and no strains are capable of growth on methane

5
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Methylobacterium commonly colonize plant leaves and root in which they utilize what as a normal by product of the plant's metabolism?

They utilize the methanol produced

6
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Methylobacterium colonies are bright pink due to what?

carotenoid pigments

7
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Why did we use minamal methonal agar to enrich Methylobacterium?

It will be used as a sole carbon and energy source

8
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How will we distinguish Methylobacterium colonies?

They will appear bright pink and sometimes have large ireregularly shaped clear zones within the cytoplasm (PHB) inclusion bodies which store carbon and energy

9
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After staining Methylobacterium with sudan black, ethanol, and safranin for PHB inclusion bodies what will PHB granules look like?

Large, irregularly shapes, blue-gray to black globular bodies within the red or pink cell