Abstract
The partial sequences of the 16S rRNA genes of 531 bacteria isolated from the main root of the sugar beet (Beta vulgaris L.) were determined and subsequently grouped into 155 operational taxonomic units by clustering analysis (≥99% identity). The most abundant phylum was Proteobacteria (72.5-77.2%), followed by Actinobacteria (9.8-16.6%) and Bacteroidetes (4.3-15.4%). Alphaproteobacteria (46.7-64.8%) was the most dominant class within Proteobacteria. Four strains belonging to Verrucomicrobia were also isolated. Phylogenetic analysis revealed that the Verrucomicrobia bacterial strains were closely related to Haloferula or Verrucomicrobium.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Actinobacteria / classification*
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Actinobacteria / genetics
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Actinobacteria / isolation & purification
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Alphaproteobacteria / classification
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Alphaproteobacteria / genetics
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Alphaproteobacteria / isolation & purification
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Bacteroidetes / classification*
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Bacteroidetes / genetics
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Bacteroidetes / isolation & purification
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Beta vulgaris / microbiology*
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Biodiversity
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Cluster Analysis
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DNA, Bacterial / chemistry
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DNA, Bacterial / genetics
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DNA, Ribosomal / chemistry
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DNA, Ribosomal / genetics
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Molecular Sequence Data
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Phylogeny
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Plant Roots / microbiology
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Proteobacteria / classification*
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Proteobacteria / genetics
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Proteobacteria / isolation & purification
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RNA, Ribosomal, 16S / genetics
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Sequence Analysis, DNA
Substances
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DNA, Bacterial
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DNA, Ribosomal
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RNA, Ribosomal, 16S