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利用杀菌剂防治松萎蔫病(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2010年05期
Page:
168-168
Column:
国际会议学术论文摘要选登
publishdate:
2010-10-08

Article Info:/Info

Title:
Suppression of pine wilt disease by an antibacterial agent oxolinic acid
Author(s):
JinCheol Kim1 Hyeok Ran Kwon12 Gyung Ja Choi1 Yong Ho Choi1 Kyoung Soo Jang1 Myung Soo Park1 NackDo Sung2 Mun Seong Kang3 Yilseong Moon4 Seung Kyu Lee4
1.Green Chemistry Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea; 2.College of Agriculture and Life Science, Chungnam National University, Daejeon 305-764, Korea; 3.Southern Forest Research Center, Korea Forest Research Institute, Jinju 660-300, Korea; 4.Yoosung Chemical R&T Co., Ltd., Daejeon 306-120, Korea
Keywords:
-
Classification number :
S763
DOI:
10.3969/j.jssn.1000-2006.2010.05.038
Document Code:
A
Abstract:
Pine wilt disease is a very complex disease and has been reported to be caused by pine wood nematode, Bursaphelenchus xylophilus and its accompanying bacteria. However, the role of bacteria in the disease is still debatable. In order to elucidate the hypothesis, we selected one antibacterial agent, oxolinic acid, showing potent antibacterial activity and then evaluated its control efficacy against pine wilt disease in greenhouse and field conditions. Among 6 antibiotics tested, oxolinic acid showed the strongest antibacterial activity against 5 bacteria isolated from three strains of pine wood nematode. In in vivo assay, the agent could effectively suppressed the development of pine wilt disease in 3year old seedlings of Pinus densiflora, it showed 71 % control value when injected 3 mg per seedling. The mixture of oxolinic acid and a nematicidal agent abamectin showed higher disease control efficacy against pine wilt disease than either oxolinic acid or abamectin alone. In addition, oxolinic acid or abamectin alone and their mixture could also controlled pine wilt disease in approximately 20year old pine trees under field conditions. These results strongly indicate that the bacteria accompanying with pine wood nematodes are necessary for the occurrence of pine wilt disease and pine wilt disease could be controlled by antibacterial antibiotic alone and a combination of antibacterial and nematicidal agents.

References

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Last Update: 2010-10-08