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 1 ; Wang, Lin 2 ; Khan, Raja Asad Ali 3 ; Song, Xiaojun 5 ; Najeeb, Saba 1 ; Zhao, Jianlong 1 ; Yang, Yuhong 1 ; Ling, Jian 1 ; Mao, Zhenchuan 1 ; Jiang, Xianzhi 1 ; Xie, Bingyan 1 ; Li, Yan 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
2.Moon Guangzhou Biotech Ltd, Microbiome Res Ctr, Guangzhou 510535, Peoples R China
3.Hainan Univ, Coll Plant Protect, Key Lab Green Prevent & Control Trop Dis & Pests, Hainan 570228, Peoples R China
4.Univ Agr, Dept Plant Pathol, Peshawar 25130, Pakistan
5.Shandong Keda Venture Bio Co Ltd, Zouping 256206, Shandong, Peoples R China
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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