Isolation of endophytic bacteria in roots of Panax ginseng and screening of antagonistic strains against phytopathogens prevalent in P. ginseng / 中国中药杂志

In this study, endophytic bacteria were isolated from roots of P. ginseng by plate culture method, and as a result, 40 endophytic bacterial strains were isolated, Bacillus spp. and Pseudomonas spp. were predominant. By confront culture method, two antagonistic endophytic bacterial strain, ge15 (Stenotrophomonas maltophilia) and ge25 (Bacillus sp. ) against Cylindrocarpon destructans, Sclerotinia schinseng and Alternaria pana were identified. The inhibition zone of ge15 to them were 5.5, 22.0, 14.8 mm, respectively; and which were 12.7,16.5,9.0 mm for ge25. The Results indicate that endophytic bacteria have biocontrol potential on ginseng pathogens, and which can be used as a bio-control factor on ginseng soilborne diseases control.

Establishment of ARDRA system for Panax ginseng cultivated soil microbial community study / 中国中药杂志

In this study, ARDRA system was established for Panax ginseng cultivated soil microbial community analysis. In the process of soil analysis we found that, ARDRA can not only distinguish soil microbial communities, proportion of each microbial type in total microorganisms can be calculated based on profiles of restricted enzyme digested 16S rDNA, also. Results indicated that, ARDRA system established was able to analyze microbial communities of P. ginseng cultivated soil samples.