Dirk Rosencrantz

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Root-derived carbon provides a major source for microbial production and emission of CH4 from rice field soils. Therefore, we characterized the structure and activity of the bacterial community inhabiting rice roots and the rhizosphere. In the first experiment, DNA retrieved from rice roots was analysed for bacterial 16S rRNA genes using cloning, sequencing(More)
Dissimilatory iron reduction is of quantitative importance during anaerobic degradation of organic matter in flooded rice field soils. To isolate dissimilatory Fe(III)-reducing microorganisms from rice soil, enrichments were carried out with acetate and ferrihydrite. One of these resulted in the isolation of strain FAc12. This organism grew anaerobically in(More)
Most-probable-number (MPN) counts were made of homoacetogenic and other bacteria present in the anoxic flooded bulk soil of laboratory microcosms containing 90- to 95-day-old rice plants. MPN counts with substrates known to be useful for the selective enrichment or the cultivation of homoacetogenic bacteria (betaine, ethylene glycol, 2, 3-butanediol, and(More)
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