| Title |
Diversity and Physiological Properties of Root Endophytic Actinobacteria in Native Herbaceous Plants of Korea |
| Author |
Tae-Ui Kim1, Sung-Heun Cho1, Ji-Hye Han1, Young Min Shin1, Hyang Burm Lee2, and Seung Bum Kim1* |
| Address |
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 Korea |
| Bibliography |
Journal of Microbiology, 50(1),50-57, 2012,
|
| DOI |
|
| Key Words |
endophytic actinobacteria, native herbaceous plant, Streptomyces, Rhodococcus |
| 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. |
