Toxicity of a secondary metabolite produced by Simplicillium chinense Snef5 against the root-knot nematode Meloidogyne incognita

文献类型： 外文期刊

第一作者： Zhao, Di

作者： Zhao, Di;Wang, Shuo;Zang, Jian;Zhu, Xiaofeng;Chen, Lijie;Duan, Yuxi;Liu, Xiaoyu;Liu, Weiwei;Chen, Jingsheng

作者机构：

关键词： Biological control; Simplicillium chinense; nematicidal substance; 2,6-pyridinedicarboxylic acid; plant-parasitic nematodes

期刊名称：ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE （ 影响因子：1.694； 五年影响因子：1.568 ）

ISSN： 0906-4710

年卷期： 2020 年 70 卷 7 期

页码：

收录情况： SCI

摘要： We studied the bioactive compound of the fungusSimplicillium chinensestrain Snef5, isolated from its culture filtrate. Following purification by chromatography, the structure of the secondary metabolite, identified as 2,6-pyridinedicarboxylic acid, was determined by spectroscopic methods (IR,H-1, and(13)C NMR) and scanning electron microscopy (SEM). The metabolite exhibited antimicrobial activity againstM. incognitawith an LD50 of 0.229 mg/ml. The light microscope was used to observe the surface and internal cellular micro-structure of the nematodes. The results of the microscopy indicated that the anatomy of the J(2)ofM. incognitawas disrupted following exposure to 2,6-pyridinedicarboxylic acid. This is the first report on the activity of 2,6-pyridinedicarboxylic acid ofS. chinensemetabolites on the root knot nematode. It showed a high level of nematicidal activity. Our data on the inhibitory effects of 2,6-pyridinedicarboxylic acid suggest that secondary metabolites from Snef5 have potential use as novel biological control agents.

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