An Assessment of the Diversity of Culturable Bacteria from Main Root of Sugar Beet

  • Okazaki Kazuyuki
    Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization
  • Iino Takao
    Japan Collection of Microorganisms, RIKEN BioResource Center
  • Kuroda Yosuke
    Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization
  • Taguchi Kazunori
    Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization
  • Takahashi Hiroyuki
    Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization
  • Ohwada Takuji
    Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine
  • Tsurumaru Hiroto
    Graduate School of Life Science, Tohoku University
  • Okubo Takashi
    Graduate School of Life Science, Tohoku University
  • Minamisawa Kiwamu
    Graduate School of Life Science, Tohoku University
  • Ikeda Seishi
    Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization

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抄録

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.

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