Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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A Leaf-Inhabiting Endophytic Bacterium, Rhodococcus sp. KB6, Enhances Sweet Potato Resistance to Black Rot Disease Caused by Ceratocystis fimbriata

  • Hong, Chi Eun (Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • Jeong, Haeyoung (Super-Bacteria Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • Jo, Sung Hee (Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • Jeong, Jae Cheol (Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • Kwon, Suk Yoon (Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology) ;
  • An, Donghwan (Department of Agricultural Economics and Rural Development, Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Park, Jeong Mee (Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology)
  • Received : 2015.11.16
  • Accepted : 2016.01.10
  • Published : 2016.03.28
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Abstract

Rhodococcus species have become increasingly important owing to their ability to degrade a wide range of toxic chemicals and produce bioactive compounds. Here, we report isolation of the Rhodococcus sp. KB6, which is a new leaf-inhabiting endophytic bacterium that suppresses black rot disease in sweet potato leaves. We determined the 7.0 Mb draft genome sequence of KB6 and have predicted 19 biosynthetic gene clusters for secondary metabolites, including heterobactins, which are a new class of siderophores. Notably, we showed the first internal colonization of host plants with Rhodococcus sp. KB6 and discuss its potential as a biocontrol agent for sustainable agriculture.

Keywords

References

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