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HOME > J. Microbiol > Volume 50(1); 2012 > Article
Research Support, Non-U.S. Gov't
Diversity and Physiological Properties of Root Endophytic Actinobacteria in Native Herbaceous Plants of Korea
Tae-Ui Kim 1, Sung-Heun Cho 1, Ji-Hye Han 1, Young Min Shin 1, Hyang Burm Lee 2, Seung Bum Kim 1
Journal of Microbiology 2012;50(1):50-57.
DOI: https://doi.org/10.1007/s12275-012-1417-x
Published online: February 27, 2012
1Department of Microbiology and Molecular Biology, School of Bioscience and Biotechnology, Chungnam National University, Daejeon 305-764, Republic of Korea, 2Environmental Microbiology Lab, Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 500-757, Republic of Korea1Department of Microbiology and Molecular Biology, School of Bioscience and Biotechnology, Chungnam National University, Daejeon 305-764, Republic of Korea, 2Environmental Microbiology Lab, Division of Applied Bioscience and Biotechnology, Chonnam National University, Gwangju 500-757, Republic of Korea
Corresponding author:  Seung Bum Kim , Tel: +82-42-821-6412, 
Received: 22 August 2011   • Accepted: 31 October 2011
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Abstract

Endophytic actinobacterial diversity in the native herbaceous plant species of Korea was analyzed using a culturebased approach. Sixty one actinobacterial strains were isolated, and assigned to 15 genera based on 16S rRNA gene analysis. The members of the genus Streptomyces comprised 45.9% of the total isolates, followed by Micromonospora (18.8%), Rhodococcus (6.6%), Microbispora (4.9%), and Micrococcus (4.9%). Other minor constituents included members of Microbacterium, Streptacidiphilus, Arthrobacter, Dietzia, Kitasatospora, Herbiconiux, Mycobacterium, Nocardia, Rathayibacter, and Tsukamurella. Among the isolates, 65.6% exhibited at least one hydrolytic enzyme activity out of four, and 45.9% exhibited antagonistic activity against at least one fungal pathogen out of five, thus demonstrating that endophytic actinobacteria can be an important source of bioactive compounds. Notably, most strains of Streptomyces proved active for both enzymatic and antagonistic activities.

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    Diversity and Physiological Properties of Root Endophytic Actinobacteria in Native Herbaceous Plants of Korea
    J. Microbiol. 2012;50(1):50-57.   Published online February 27, 2012
    DOI: https://doi.org/10.1007/s12275-012-1417-x
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