Composition and diversity of microbial communities recovered from surrogate minerals incubated in an acidic uranium-contaminated aquifer

Article Abstract:

Surrogate geological media contained in a porous receptacle were incubated in a well within the saturated zone of a pristine region of an aquifer to capture populations from the extant communities. Results indicate that phylogenetically distinct microbial communities inhabit the two Field Research Center (FRC) sites, pristine and contaminated and it was observed that the microbial diversity at the contaminated site was diminished relative to the pristine community and was dominated by organisms apparently adapted to the harsh conditions.

author: Cummings, David E., Geesey, Gill G., Reardon, Catherine L., Petzke, Lynn M., Kinsall, Barry L., Watson, David B., Payton, Brent M
Phylogeny

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Recurrent seasonal variations in abundance and composition of filamentous SOL cluster bacteria (saprospiraceae, bacteroidetes) in oligomesotropic Lake Mondsee (Austria)

Article Abstract:

An assessment of the spatial and temporal variation of SOL cluster bacteria was conducted in oligomesotropic Lake Mondsee and adjacent lakes by fluorescence in situ hybridization over two annual cycles. The filamentous SOL bacteria existed in the Lake Mondsee throughout the assessment period and the seasonal dynamics of the SOL community were remarkably similar with regards to both abundance and composition in two consecutive years.

author: Hahn, Martin W., Schauer, Michael, Jing Jiang
Austria, Methods, In situ hybridization, Phytoplankton, Structure, Protista, Protists

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Cell adsorption and selective desorption for separation of microbial cells by using chitosan-immobilized silica

Article Abstract:

Chitosan-immobilized silica (CIS) is used to conduct cell adsorption and selective desorption for separation of microbial cells. The results have shown that quantitative and selective fractionation of cells is readily achievable by employing chitosan, a known antibacterial material.

author: Kubota, Munehiro, Matsui, Masayoshi, Chiku, Hiroyuki, Kasashima, Nobuyuki, Shimojoh, Manabu, Sakaguchi, Kengo
United States, Chitin

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subjects list: Research, Microbial genetics, Chemical properties
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