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Microbial diversity of soils on the banks of the Solimões and Negro rivers, state of Amazonas, Brazil

Author(s): Ellen Karla Nobre dos Santos | Rubens Tomio Honda | Sérgio Ricardo Nozawa | Monica Stropa Ferreira-Nozawa

Journal: Genetics and Molecular Biology
ISSN 1415-4757

Volume: 35;
Issue: 1;
Start page: 134;
Date: 2012;
Original page

Keywords: microbiological diversity | tropical soil biodiversity | 16S rDNA gene | Amazon | molecular biology

Analysis of bacterial diversity in soils along the banks of the Solimões and Negro rivers, state of Amazonas, Brazil, was by partial sequencing of the genes codifying the rDNA16S region. Diversity of operational taxonomic units (OTU) and of the divergent sequences obtained were applied in comparative analysis of microbiological diversity in the two environments, based on richness estimators and OTU diversity indices. The higher OTU diversity in the Solimões was based on the higher number of parameters that evoke this. The interaction between the nucleotide sequences of bacteria inhabiting the two riverine environments indicated that the two microrganism communities are similar in composition.
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