Nematicidal glycosylated resorcylic acid lactones from the fungus Pochonia chlamydosporia PC-170 and their key biosynthetic genes
文献类型： 外文期刊
作者： Li, Zeyu 1 ; Luo, Ning 3 ; Zhang, Wenwen 1 ; Khan, Raja Asad Ali 1 ; Ling, Jian 1 ; Zhao, Jianlong 1 ; Yang, Yuhong 1 ; Mao, Zhenchuan 1 ; Xie, Bingyan 1 ; Zhou, Ligang 2 ; Li, Yan 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, State Key Lab Vegetable Biobreeding, Beijing, Peoples R China
2.China Agr Univ, Coll Plant Protect, Dept Plant Pathol, Beijing, Peoples R China
3.Gansu Agr Univ, Coll Plant Protect, Biocontrol Engn Lab Crop Dis & Pests Gansu Prov, Lanzhou, Peoples R China
关键词： Pochonia chlamydosporia; RALs; nematicidal activity; Meloidogyne incognita; biosynthetic gene
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）
ISSN：
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Chemical study of the nematicidal biocontrol fungus Pochonia chlamydosporia PC-170 led to discovery of six resorcylic acid lactones (RALs), including three nematicidal glycosylated RALs, monocillin VI glycoside (1), colletogloeolactone A (2) and monocillin II glycoside (3), and three antibacterial non-glycosylated RALs, monocillin VI (4), monocillin IV (5) and monocillin II (6). The planar structure of the new compound monocillin VI glycoside (1) was elucidated using HRESIMS and NMR data, and its monosaccharide configuration was further determined through sugar hydrolysis experiment and GC-MS analysis method. Furthermore, their two biosynthetic-related PKS genes, pchE and pchI, were identified through the gene knockout experiment. The glycosylated RALs 1-3 exhibited nematicidal activity against Meloidogyne incognita, with LC50 values of 94, 152 and 64 mu g/mL, respectively, and thus had great potential in the development of new nematicidal natural products to control M. incognita in the future.
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