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Integrated management of root-knot nematodes on tomato in glasshouse production using nematicides and a biocontrol agent, and their effect on soil microbial communities

文献类型： 外文期刊

作者： Liu, Jianbin 1 ; Sun, Jingzu 1 ; Qiu, Jiyan 2 ; Liu, Xingzhong 1 ; Xiang, Meichun 1 ;

作者机构： 1.Chinese Acad Sci, Inst Microbiol, State Key Lab Mycol, Beijing 100101, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China

关键词： Dazomet;DGGE;Fosthiazate;Meloidogyne spp.;microbial diversity;Purpureocillium lilacinum

期刊名称：NEMATOLOGY （ 影响因子：1.442； 五年影响因子：1.485 ）

ISSN： 1388-5545

年卷期： 2014 年 16 卷

页码：

收录情况： SCI

摘要： Nematicides are the main method for managing root-knot nematodes but they are not environmentally benign. Biological control is one alternative that has a lower or no environmental impact. This study was conducted to evaluate the efficacy of two nematicides (Fostbiazate and Dazomet), a biocontrol agent (Purpureocillium lilacinum (= Paecilomyces lilacinus) YES-2), their combination on controlling root-knot nematodes on tomato plants and their effects on the rhizosphere microbial community in long-term glasshouse experiments. The gall index and numbers of second-stage juveniles (J2) were significantly reduced by the individual treatments of Fosthiazate, Dazomet or P. lilacinum YES-2. Purpureocillium lilacinum YES-2 combined with a half dose of Fosthiazate showed the most efficient control as indicated by gall index and number of J2 compared with the control treatment in glasshouse experiments conducted over a 5-year period (2007-2011). The bacterial and fungal biodiversity in soil measured using Biolog ECO MicroPlates and denaturing gradient gel electrophoresis (DGGE) fingerprint was higher in the treatments of P. lilacinum YES-2 alone or its combination with chemicals than in the treatments of Dazomet or Fosthiazate (in 2011 only). This study suggested a synergistic effect on the control of root-knot nematode by P. lilacinum YES-2 combined with Fosthiazate, and the contribution of these two treatments to the microbial communities in the soil.

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