Potential use of cucumber (Cucumis sativus L.) endophytic fungi as seed treatment agents against root-knot nematode Meloidogyne incognita
文献类型： 外文期刊
作者： Yan, Xiao-ning 1 ; Sikora, Richard A. 2 ; Zheng, Jing-wu 1 ;
作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, Inst Biotechnol, Hangzhou 310029, Zhejiang, Peoples R China
2.Univ Bonn, Dept Plant Hlth, Inst Resource Conservat & Plant Sci INRES, D-53115 Bonn, Germany
3.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Danzhou 571737, Peoples R China
关键词： Cucumber endophytic fungi;Meloidogyne incognita;Control efficacy;Colonization;In vitro activity
期刊名称：JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B （ 影响因子：3.066； 五年影响因子：3.057 ）
ISSN： 1673-1581
年卷期： 2011 年 12 卷 3 期
页码：
收录情况： SCI
摘要： Seed treatment with endophytic fungi has been regarded as an effective method for plant parasitic nematode control. Endophytic fungi from cucumber seedlings were isolated and screened for their potential to be used as seed treatment agents against Meloidogyne incognita. Among the 294 isolates screened, 23 significantly reduced galls formed by M. incognita in greenhouse test. The 10 most effective isolates were Fusarium (5), Trichoderma (1), Chaetomium (1), Acremonium (1), Paecilomyces (1), and Phyllosticta (1). Their control efficacies were repeatedly tested and their colonizations as well as in vitro activity against M. incognita were studied. They reduced the number of galls by 24.0%-58.4% in the first screening and 15.6%-44.3% in the repeated test, respectively. Phyllosticta Ph511 and Chaetomium Ch1001 had high colonizations on both the roots and the aboveground parts of cucumber seedlings. Fusarium isolates had colonization preference on the roots, their root colonizations ranging from 20.1% to 47.3% of the total root area. Trichoderma Tr882, Paecilomyces Pa972, and Acremonium Ac985 had low colonizations on both the roots and the aboveground parts. Acremonium Ac985, Chaetomium Ch1001, Paecilomyces Pa972, and Phyllosticta Ph511 produced compounds affecting motility of the second stage juveniles of M. incognita. Based on these results, Chaetomium Ch1001 was considered to have the highest potential as a seed treatment agent for M. incognita biocontrol.
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