지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.6
- 수록면
- 304 - 311 (8page)
이용수
초록· 키워드
오류제보하기
Background: Ginseng black spot disease resulting from Alternaria panax Whuetz is a common soil-borne disease, with an annual incidence rate higher than 20e30%. In this study, the bacterial strains with good antagonistic effect against A. panax are screened.
Methods: A total of 285 bacterial strains isolated from ginseng rhizosphere soils were screened using the KirbyeBauer disk diffusion method and the Oxford cup plate assay.We analyzed the antifungal spectrum of SZ-22 by confronting incubation. To evaluate the efficacy of biocontrol against ginseng black spot and for growth promotion by SZ-22, we performed pot experiments in a plastic greenhouse. Taxonomic position of SZ-22 was identified using morphology, physiological, and biochemical characteristics, 16S ribosomal DNA, and gyrB sequences.
Results: SZ-22 (which was identified as Brevundimonas terrae) showed the strongest inhibition rate against A. panax, which showed 83.70% inhibition, and it also provided broad-spectrum antifungal effects. The inhibition efficacies of the SZ-22 bacterial suspension against ginseng black spot reached 82.47% inhibition, which is significantly higher than that of the 25% suspension concentrate azoxystrobin fungicide treatment (p < 0.05). Moreover, the SZ-22 bacterial suspension also caused ginseng plant growth promotion as well as root enhancement.
Conclusion: Although the results of the outdoor pot-culture method were influenced by the pathogen inoculum density, the cropping history of the field site, and the weather conditions, B. terrae SZ-22 controlled ginseng black spot and promoted ginseng growth successfully. This study provides resource for the biocontrol of ginseng black spot.
Methods: A total of 285 bacterial strains isolated from ginseng rhizosphere soils were screened using the KirbyeBauer disk diffusion method and the Oxford cup plate assay.We analyzed the antifungal spectrum of SZ-22 by confronting incubation. To evaluate the efficacy of biocontrol against ginseng black spot and for growth promotion by SZ-22, we performed pot experiments in a plastic greenhouse. Taxonomic position of SZ-22 was identified using morphology, physiological, and biochemical characteristics, 16S ribosomal DNA, and gyrB sequences.
Results: SZ-22 (which was identified as Brevundimonas terrae) showed the strongest inhibition rate against A. panax, which showed 83.70% inhibition, and it also provided broad-spectrum antifungal effects. The inhibition efficacies of the SZ-22 bacterial suspension against ginseng black spot reached 82.47% inhibition, which is significantly higher than that of the 25% suspension concentrate azoxystrobin fungicide treatment (p < 0.05). Moreover, the SZ-22 bacterial suspension also caused ginseng plant growth promotion as well as root enhancement.
Conclusion: Although the results of the outdoor pot-culture method were influenced by the pathogen inoculum density, the cropping history of the field site, and the weather conditions, B. terrae SZ-22 controlled ginseng black spot and promoted ginseng growth successfully. This study provides resource for the biocontrol of ginseng black spot.
목차
ABSTRACT
1. Introduction
2. Materials and methods
3. Results
4. Discussion
5. Conclusion
References
참고문헌 (45)
참고문헌 신청
[학술지(정기간행물)] - Juyeon Jung / 2014 / Practical application of DNA markers for high-throughput authentication of Panax ginseng and Panax quinquefolius from commercial ginseng products / Journal of Ginseng Research 38 (2) : 123 ~ 129
[학술지(정기간행물)] - Zhao YF / 1990 / Studies on the integrated control of ginseng black spot (Alternaria panax Whuetz) in China / Acta Phytophy Sin 17 : 123 ~ 126
[학술지(정기간행물)] - Yu SH / 1984 / Morphology and pathogenicity of Alternaria panax isolated from Panax schinseng in Japan and Korea / Ann. Phytopathol Soc Jpn 50 : 313 ~ 321
[학술지(정기간행물)] - Wang X / 2011 / Toxicity test and field control effects of different fungicides against Alternaria panax / Agrochemicals 50 : 841 ~ 844
[학술지(정기간행물)] - Kalia A / 2011 / Effect of pesticide application on soil microorganisms / Arch Agron Soil Sci 57 : 569 ~ 596
[학술지(정기간행물)] - Zhao YF / 1990 / Studies on the integrated control of ginseng black spot (Alternaria panax Whuetz) in China / Acta Phytophy Sin 17 : 123 ~ 126
[학술지(정기간행물)] - Yu SH / 1984 / Morphology and pathogenicity of Alternaria panax isolated from Panax schinseng in Japan and Korea / Ann. Phytopathol Soc Jpn 50 : 313 ~ 321
[학술지(정기간행물)] - Wang X / 2011 / Toxicity test and field control effects of different fungicides against Alternaria panax / Agrochemicals 50 : 841 ~ 844
[학술지(정기간행물)] - Kalia A / 2011 / Effect of pesticide application on soil microorganisms / Arch Agron Soil Sci 57 : 569 ~ 596
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UCI(KEPA) : I410-ECN-0101-2018-524-003161175