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
作者： Zhao, Di 1 ; Zhu, Xiaofeng 2 ; Chen, Lijie 2 ; Liu, Weiwei 3 ; Chen, Jingsheng 4 ; Wang, Shuo 1 ; Zang, Jian 1 ; Duan, Yu 1 ;
作者机构： 1.Shenyang Agr Univ, Analyt Instrumentat Ctr, Shenyang, Peoples R China
2.Shenyang Agr Univ, Coll Plant Protect, Nematol Inst Northern China, Shenyang, Peoples R China
3.Dalian Pulandian Dist Agr Dev Serv Ctr, Dalian, Peoples R China
4.Heilongjiang Acad Agr Sci, Daqing Branch, Daqing, Peoples R China
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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