Methylorubrum rhodesianum M520 as a biocontrol agent against Meloidogyne incognita (Tylenchida: Heteroderidae) J2s infecting cucumber roots

文献类型： 外文期刊

第一作者： Zhao, Zhengyang

作者： Zhao, Zhengyang;Najeeb, Saba;Zhao, Jianlong;Yang, Yuhong;Ling, Jian;Mao, Zhenchuan;Xie, Bingyan;Li, Yan;Wang, Lin;Khan, Raja Asad Ali;Khan, Raja Asad Ali;Song, Xiaojun

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关键词： microbial pesticides; biological control; root-knot nematodes; cucumber

期刊名称：JOURNAL OF APPLIED MICROBIOLOGY （ 影响因子：4.0； 五年影响因子：4.3 ）

ISSN： 1364-5072

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Aims Root-knot nematodes (RKNs) are plant pathogens that cause huge economic losses worldwide. The biological management of RKNs may be a sustainable alternative to chemical control methods. Here, the biocontrol potential of Methylorubrum rhodesianum M520 against the RKN Meloidogyne incognita was investigated to theoretically support its application as a biocontrol agent in field production. Methods and results In-vitro assays showed 91.9% mortality of M. incognita second-stage juveniles in the presence of strain M520 and that the hatching rate of M. incognita eggs was 21.7% lower than that of eggs treated with sterile water. In pot experiments, the M520 treatment caused 70.8% reduction in root-knots and increased plant shoot length and stem and root fresh weights, compared to control plant values. In split-root experiments, cucumber roots treated with M520 showed 25.6% decrease in root gall number, compared to that in control roots. Conclusion M520 has multiple mechanisms against RKNs and might be used as a biocontrol agent against M. incognita in cucumber, laying a foundation for further studying M520 biocontrol against RKNs.

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