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논문 기본 정보

자료유형
학술저널
저자정보
Jin-Lian Chen (Yunnan Normal University) Shi-Zhong Sun (Yunnan Normal University) Cui-Ping Miao (Yunnan University) Kai Wu (Yunnan Normal University) You-Wei Chen (Yunnan University) Li-Hua Xu (Yunnan University) Hui-Lin Guan (Yunnan Normal University) Li-Xing Zhao (Yunnan University)
저널정보
고려인삼학회 Journal of Ginseng Research Journal of Ginseng Research Vol.40 No.4
발행연도
2016.10
수록면
315 - 324 (10page)

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초록· 키워드

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Background: Biocontrol agents are regarded as promising and environmental friendly approaches as agrochemicals for phytodiseases that cause serious environmental and health problems. Trichoderma species have been widely used in suppression of soil-borne pathogens. In this study, an endophytic fungus, Trichoderma gamsii YIM PH30019, from healthy Panax notoginseng root was investigated for its biocontrol potential.
Methods: In vitro detached healthy roots, and pot and field experiments were used to investigate the pathogenicity and biocontrol efficacy of T. gamsii YIM PH30019 to the host plant. The antagonistic mechanisms against test phytopathogens were analyzed using dual culture, scanning electron microscopy, and volatile organic compounds (VOCs). Tolerance to chemical fertilizers was also tested in a series of concentrations.
Results: The results indicated that T. gamsii YIM PH30019 was nonpathogenic to the host, presented appreciable biocontrol efficacy, and could tolerate chemical fertilizer concentrations of up to 20%. T. gamsii YIM PH30019 displayed antagonistic activities against the pathogenic fungi of P. notoginseng via production of VOCs. On the basis of gas chromatography-mass spectrometry, VOCs were identified as dimethyl disulfide, dibenzofuran, methanethiol, ketones, etc., which are effective ingredients for antagonistic activity. T. gamsii YIM PH30019 was able to improve the seedlings’ emergence and protect P. notoginseng plants from soil-borne disease in the continuous cropping field tests.
Conclusion: The results suggest that the endophytic fungus T. gamsii YIM PH30019 may have a good potential as a biological control agent against notoginseng phytodiseases and can provide a clue to further illuminate the interactions between Trichoderma and phytopathogens.

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ABSTRACT
1. Introduction
2. Materials and methods
3. Results
4. Discussion
5. Conclusion
References

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