한국환경농학회지 (Korean Journal of Environmental Agriculture)

  • 제40권3호
  • /
  • Pages.194-202
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  • 2021
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  • 1225-3537(pISSN)
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  • 2233-4173(eISSN)
한국환경농학회 (The Korean Society of Environmental Agriculture)
권호 표지
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Effect of Non-indigenous Bacterial Introductions on Rhizosphere Microbial Community

  • Nogrado, Kathyleen (Department of Bioenvironmental Chemistry, Jeonbuk National University) ;
  • Ha, Gwang-Su (Microbial Institute for Fermentation Industry (MIFI)) ;
  • Yang, Hee-Jong (Microbial Institute for Fermentation Industry (MIFI)) ;
  • Lee, Ji-Hoon (Department of Bioenvironmental Chemistry, Jeonbuk National University)
  • 투고 : 2021.09.19
  • 심사 : 2021.09.24
  • 발행 : 2021.09.30
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초록

BACKGROUND: Towards achievement of sustainable agriculture, using microbial inoculants may present promising alternatives without adverse environmental effects; however, there are challenging issues that should be addressed in terms of effectiveness and ecology. Viability and stability of the bacterial inoculants would be one of the major issues in effectiveness of microbial pesticide uses, and the changes within the indigenous microbial communities by the inoculants would be an important factor influencing soil ecology. Here we investigated the stability of the introduced bacterial strains in the soils planted with barley and its effect on the diversity shifts of the rhizosphere soil bacteria. METHODS AND RESULTS: Two different types of bacterial strains of Bacillus thuringiensis and Shewanella oneidensis MR-1 were inoculated to the soils planted with barley. To monitor the stability of the inoculated bacterial strains, genes specific to the strains (XRE and mtrA) were quantified by qPCR. In addition, bacterial community analyses were performed using v3-v4 regions of 16S rRNA gene sequences from the barley rhizosphere soils, which were analyzed using Illumina MiSeq system and Mothur. Alpha- and beta-diversity analyses indicated that the inoculated rhizosphere soils were grouped apart from the uninoculated soil, and plant growth also may have affected the soil bacterial diversity. CONCLUSION: Regardless of the survival of the introduced non-native microbes, non-indigenous bacteria may influence the soil microbial community and diversity.

키워드

과제정보

This study was funded by the Cooperative Research Programs for Agricultural Science and Technology Development (Project No. PJ015716032021), Rural Development Administration, Republic of Korea.

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