The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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Serratia plymuthica Strain A2l-4: A Potential Biocontrol Agent Against Phytophthora Blight of Pepper

  • Shen, Shun-Shan (Department of Agricultural Biology, Gyeongsang National University) ;
  • Kim, Jin-Woo (School of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University) ;
  • Park, Chang-Seuk (Department of Agricultural Biology, Gyeongsang National University)
  • Published : 2002.06.01
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Abstract

A promising biocontrol agent, A2l-4, against Phytophthora blight of pepper was selected from 351 bacterial isolates collected from rhizosphere soils and roots of onion (Allium fistulosum L.). The isolate A21-4 was identified as Serratia plymuthica based on its 16S rRNA sequence and key characteristics as compared with that of an authentic culture of S. plymuthica (ATCC No. 6109D01). The isolate readily colonized on roots of various crops including pepper when inoculated on seed and not. Strain A2l-4 showed narrow spectrum of antibiotic activity, as revealed in its strong inhibitory activity to the genera Pythium and Phytophthora, but not to Fuasrium and Rhizoctonia. In pot experiments, none of the pepper seedlings treated with A2l-4 were infected by Phytophthora capsici, while 86% of the control plants were killed by the pathogen.

Keywords

References

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