Genetic population structure of the soil bacterium Myxococcus xanthus at the centimeter scale

Article Abstract:

The small-scale production structure of Myxococcus xanthus is investigated by isolating several clones from a small patch of soil (16 by 16 cm) in Tubingen, Germany. The analysis has indicated that M. xanthus is surrounded by a variety of conspecifics in its natural soil habitat at a spatial scale at which encounters among genotypes are likely.

Genetic aspects, Gram-negative bacteria, Biological diversity, Biodiversity

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Relative abundances of proteobacterial membrane-bound and periplasmic nitrate reductases in selected environments

Article Abstract:

The investigation of the relative abundances of two types of nitrate reductases in various environments using a real-time PCR assay is presented. Findings suggest the high correlation between narG and napA gene copy numbers in soils, which indicate the ecological roles of the corresponding enzymes.

Analysis, Polymerase chain reaction, Cell membranes

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Copper-adapted Suillus luteus, a symbiotic solution for pines colonizing Cu mine spoils

Article Abstract:

A population of the ectomycorrhizal fungus Suillus luteus that colonized a toxic Cu mine spoil in Norway is described. The population has developed adaptive Cu tolerance and is able to protect pine trees against Cu toxicity.

Copper Mines, Copper Ore and Nickel Ore Mining, Copper ores, Copper mining, Development and progression, Copper industry, Environmental aspects, Soil fungi

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