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Isolation and Identification of Antifungal Compounds Produced by Bacillus Y-IVI for Suppressing Fusarium Wilt of Muskmelon

文献类型： 外文期刊

作者： Zhao, Qingyun 1 ; Mei, Xinlan 1 ; Xu, Yangchun 1 ;

作者机构： 1.Nanjing Agr Univ, Jiangsu Key Lab Organ Waste Utilizat, Nanjing 210095, Jiangsu, Peoples R China

2.Nanjing Agr Univ, Natl Engn Res Ctr Organ Based Fertilizers, Nanjing 210095, Jiangsu, Peoples R China

3.Chinese Acad Trop Agr Sci, Spice & Beverage Res Inst, Haikou, Peoples R China

关键词： antifungal substance;Bacillus subtilis;biological control;Cucumis melo L.

期刊名称：PLANT PROTECTION SCIENCE （ 影响因子：1.464； 五年影响因子：1.834 ）

ISSN：

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收录情况： SCI

摘要： The Bacillus strain Y-IVI was used in the biocontrol of muskmelon Fusarium wilt. It was identified as Bacillus subtilis. The antifungal compounds from the culture filtrate were purified by high performance liquid chromatography. Two series of homologous ion peaks were analysed by liquid chromatography-electrospray ionisation-mass spectrometry, one with molecular weights of 1028.7, 1042.7, and 1056.7 and the other with molecular weights of 1463, 1477, and 1491. The compounds were ascribed to iturin A and fengycin, respectively. The maximum production of iturin by Y-IVI was 89.75 mg/l. In conclusion, we provided biochemical evidence that strain Y-IVI was able to produce antifungal compounds and thus holds great potential for use in the biocontrol of Fusarium wilt disease.

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