Wide distribution and diversity of members of the bacterial kingdom Acidobacterium in the environment

Article Abstract:

Members of the bacterial kingdom Acidobacterium exhibit genetic and metabolic diversity as well as wide environmental distribution. To test this observation, members of Acidobacterium found in 43 environmental samples were analyzed by polymerase chain reaction amplification. Results show that Acidobacterium members are very widespread in terrestrial environments, particularly in neutral soils and sediments. The wide distribution and diversity of the members of Acidobacterium are comparable to those of Proteobacteria and gram-positive bacterial kingdoms.

Bacteria, Polymerase chain reaction, Microbial ecology, Biological diversity, Biodiversity

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Diverse uncultivated baterial groups from soils of the arid Southwestern United States that are present in many geographic regions

Article Abstract:

Microbiological research shows that the microorganisms found in northern Arizona soil vary widely in their genetic makeup. Genetic sequencing analysis using PCR amplification with primers specific for bacterial 16S ribosomal ribonucleic acid gene sequences was performed. Five groups of microorganisms, representing 64% of the sequence samples, have not been classified before. Further research is continuing to establish more about the newly-identified microorganisms.

Genetic aspects, Arizona, Soil microbiology, Phylogeny

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Changes in nitrogen-fixing and ammonia-oxidizing bacterial communities in soil of a mixed conifer forest after wildfire

Article Abstract:

The effects of forest fire on two important groups of N-cycling bacteria in soil, the nitrogen-fixing and ammonia-oxidizing bacteria are examined. PCR results indicated that the soil biomass and proportion of nitrogen-fixing and ammonia-oxidizing species was less in soil from the fire-impacted sites than from the unburned sites.

Goods & services distribution, Channels of Distribution, New Mexico, Distribution, Nitrogen-fixing microorganisms, Company distribution practices, Wildfires, Coniferous forests

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