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RISS 인기검색어
- 검색키워드
- 저자 : Jianjun J. Hao (검색결과 2 건)
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Taxonomy of fungal complex causing red-skin root of Panax ginseng in China
Xiao H. Lu,Xi M. Zhang,Xiao L. Jiao,Jianjun J. Hao,Xue S. Zhang,Yi Luo,Wei W. Gao 고려인삼학회 2020 Journal of Ginseng Research Vol.44 No.3
Background: Red-skin root of Asian ginseng (Panax ginseng) significantly reduces the quality and limits theproduction of ginseng in China. The disease has long been thought to be a noninfectious physiologicaldisease, except one report that proved itwas an infectious disease. However, the causal agents have not beensuccessfully determined. In the present study, we were to reveal the pathogens that cause red-skin disease. Methods: Ginseng roots with red-skin root symptoms were collected from commercial fields in NortheastChina. Fungi were isolated from the lesion and identified based on morphological characters alongwith multilocus sequence analyses on internal transcription spacer, b-tubulin (tub2), histone H3 (his3),and translation elongation factor 1a (tef-1a). Pathogens were confirmed by inoculating the isolates inginseng roots. Results: A total of 230 isolates were obtained from 209 disease samples. These isolates were classifiedinto 12 species, including Dactylonectria sp., D. hordeicola, Fusarium acuminatum, F. avenaceum, F. solani,F. torulosum, Ilyonectria mors-panacis, I. robusta, Rhexocercosporidium panacis, and three novel speciesI. changbaiensis, I. communis, and I. qitaiheensis. Among them, I. communis, I. robusta, and F. solani had thehighest isolation frequencies, being 36.1%, 20.9%, and 23.9%, respectively. All these species isolated werepathogenic to ginseng roots and caused red-skin root disease under appropriate condition. Conclusion: Fungal complex is the causal agent of red-skin root in P. ginseng.
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Taxonomy of fungal complex causing red-skin root of Panax ginseng in China
Lu, Xiao H.,Zhang, Xi M.,Jiao, Xiao L.,Hao, Jianjun J.,Zhang, Xue S.,Luo, Yi,Gao, Wei W. The Korean Society of Ginseng 2020 Journal of Ginseng Research Vol.44 No.3
Background: Red-skin root of Asian ginseng (Panax ginseng) significantly reduces the quality and limits the production of ginseng in China. The disease has long been thought to be a noninfectious physiological disease, except one report that proved it was an infectious disease. However, the causal agents have not been successfully determined. In the present study, we were to reveal the pathogens that cause red-skin disease. Methods: Ginseng roots with red-skin root symptoms were collected from commercial fields in Northeast China. Fungi were isolated from the lesion and identified based on morphological characters along with multilocus sequence analyses on internal transcription spacer, β-tubulin (tub2), histone H3 (his3), and translation elongation factor 1α (tef-1α). Pathogens were confirmed by inoculating the isolates in ginseng roots. Results: A total of 230 isolates were obtained from 209 disease samples. These isolates were classified into 12 species, including Dactylonectria sp., D. hordeicola, Fusarium acuminatum, F. avenaceum, F. solani, F. torulosum, Ilyonectria mors-panacis, I. robusta, Rhexocercosporidium panacis, and three novel species I. changbaiensis, I. communis, and I. qitaiheensis. Among them, I. communis, I. robusta, and F. solani had the highest isolation frequencies, being 36.1%, 20.9%, and 23.9%, respectively. All these species isolated were pathogenic to ginseng roots and caused red-skin root disease under appropriate condition. Conclusion: Fungal complex is the causal agent of red-skin root in P. ginseng.
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