Characterization of Rhizobacteria Isolated from Family Solanaceae Plants in Dokdo Island

독도에 서식하는 가지과식물로부터 분리된 근권세균의 특성

  • Ham, Mi-Seon (School of Life Sciences and Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University) ;
  • Park, Yu-Mi (School of Life Sciences and Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University) ;
  • Sung, Hye-Ri (School of Life Sciences and Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University) ;
  • Sumayo, Marilyn (School of Life Sciences and Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University) ;
  • Ryu, Choong-Min (Laboratory of Microbial Genomics, Systems Microbiology Research Center, KRIBB) ;
  • Park, Seung-Hwan (Laboratory of Microbial Genomics, Systems Microbiology Research Center, KRIBB) ;
  • Ghim, Sa-Youl (School of Life Sciences and Research Institute for Ulleungdo & Dokdo Islands, Kyungpook National University)
  • 함미선 (경북대학교 생명과학부, 경북대학교 울릉도.독도연구소) ;
  • 박유미 (경북대학교 생명과학부, 경북대학교 울릉도.독도연구소) ;
  • 성혜리 (경북대학교 생명과학부, 경북대학교 울릉도.독도연구소) ;
  • ;
  • 류충민 (한국생명공학연구원 유전체연구센터) ;
  • 박승환 (한국생명공학연구원 유전체연구센터) ;
  • 김사열 (경북대학교 생명과학부, 경북대학교 울릉도.독도연구소)
  • Received : 2009.05.02
  • Accepted : 2009.06.04
  • Published : 2009.06.28


To characterize plant root-associated bacteria in wild plant family Solanaceae, Solanum nigrum L. plants were collected in Dokdo island. Forty four strains of nitrogen-fixing or spore-forming bacteria were isolated from rhizosphere of Solanum nigrum L. plants. Among these, 19 strains were able to produce auxin. Thirteen strains of these produced siderophore as determined by color reaction on CAS-blue plate, 8 strains were able to solubilize phosphate. The 16S rDNA genes of the isolated bacteria were amplified and sequenced. Model plants, pepper and tobacco, were established in order to evaluate the bacterial capacities eliciting growth promotion and induced systemic resistance. The plants treated with strain KUDC1009 were more resistant and capable of growth-promotion than control plants when challenged by either Xanthomonas axonopodis pv. vesicatoria or Erwinia carotovora sub. carotovora strain SCC1. Rhizobacteria isolated from Dokdo island can promote growth of wild type Solanum nigrum L. under much environmental stresses.


Dokdo;Solanaceae;plant growth-promoting rhizobacteria;induced systemic resistance


Supported by : 농림부


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