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Discovery of Niphimycin C from Streptomyces yongxingensis sp. nov. as a Promising Agrochemical Fungicide for Controlling Banana Fusarium Wilt by Destroying the Mitochondrial Structure and Function

文献类型: 外文期刊

作者: Chen, Yufeng 1 ; Wei, Yongzan 1 ; Cai, Bingyu 1 ; Zhou, Dengbo 1 ; Qi, Dengfeng 1 ; Zhang, Miaoyi 1 ; Zhao, Yankun 1 ; Li, Kai 1 ; Wedge, David E. 2 ; Pan, Zhiqiang 2 ; Xie, Jianghui 1 ; Wang, Wei 1 ;

作者机构: 1.Chinese Acad Trop Agr Sci, Key Lab Biol & Genet Resources Trop Crops, Minist Agr, Inst Trop Biosci & Biotechnol, Haikou 571101, Peoples R China

2.Agr Res Serv, Nat Prod Utilizat Res Unit, United States Dept Agr, University, MI 38677 USA

关键词: S; yongxingensis sp; nov; niphimycin C; natural fungicide; banana Fusarium wilt; mitochondrial function

期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:5.895; 五年影响因子:6.048 )

ISSN: 0021-8561

年卷期:

页码:

收录情况: SCI

摘要: Banana Fusarium wilt caused by Fusarium oxysporum f. sp. cubense (Foc) is the most destructive soil-borne fungal disease. Tropical race 4 (Foc TR4), one of the strains of Foc, can infect many commercial cultivars, which represents a threat to global banana production. Currently, there are hardly any effective chemical fungicides to control the disease. To search for natural product-based fungicides for controlling banana Fusarium wilt, we identified a novel strain Streptomyces yongxingensis sp. nov. (JCM 34965) from a marine soft coral, from which a bioactive compound, niphimycin C, was isolated using an activity-guided method. Niphimycin C exhibited a strong antifungal activity against Foc TR4 with a value of 1.20 mu g/mL for EC50 and obviously inhibited the mycelial growth and spore germination of Foc TR4. It caused the functional loss of mitochondria and the disorder of metabolism of Foc TR4 cells. Further study showed that niphimycin C reduced key enzyme activities of the tricarboxylic acid (TCA) cycle and the electron transport chain (ETC). It displayed broad-spectrum antifungal activities against the selected 12 phytopathogenic fungi. In pot experiments, niphimycin C reduced the disease indexes in banana plantlets and inhibited the infection of Foc TR4 in roots. Hence, niphimycin C could be a promising agrochemical fungicide for the management of fungal diseases.

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