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KMID : 0364820120480040246
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Korean Journal of Microbiology
2012 Volume.48 No. 4 p.246 ~ p.253
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Molecular Diversity of Rhizobacteria in Ginseng Soil and Their Plant Benefiting Attributes
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Hong Eun-Hye
Lee Sun-Hee
Regupathy Thamizh Vendan
Lee Young-Ha
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Abstract
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The purpose of this study was to investigate the molecular diversity of rhizobacteria associated with ginseng of
varying age levels and their plant benefiting attributes. A total of 143 different isolates belonging to 15 different
bacterial genera were recovered. Although variation was found in the rhizobacterial community due to age of the
plant, majority of bacteria belong to Firmicutes (58%). In which, Bacillus was found to be the predominant genus
irrespective of age of the ginseng. To assess the plant benefiting attributes, 30 representative isolates were selected.
The results indicated that some of the isolates could exhibit multiple plant growth promoting traits like secretion of
cell wall degrading enzymes, production of indole-3-acetic acid, synthesis of siderophores, solubilization of
phosphates and soil pathogens inhibition. It can be suggested that strains of B. subtilis, B. amyloliquefaciens, B.
velezensis, and B. licheniformis were positive for all the above traits, which have potential to be used as plant growth
promoting inoculants to improve ginseng crop in the future.
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KEYWORD
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diversity, ginseng, plant growth promoting rhizobacteria (PGPR), rhizobacteria
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