数字农科院2.0

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

文献类型： 外文期刊

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

作者机构：

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

期刊名称： JOURNAL OF APPLIED MICROBIOLOGY

ISSN： 1364-5072

年卷期： 2023 年 134 卷 2 期

页码：

收录情况： SCIE（2023版）

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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