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Isolation and characterization of antagonistic Paenibacillus polymyxa HX-140 and its biocontrol potential against Fusarium wilt of cucumber seedlings.
Zhai, Yang; Zhu, Jiu-Xiang; Tan, Tai-Meng; Xu, Jian-Ping; Shen, Ai-Rong; Yang, Xie-Bin; Li, Ji-Lie; Zeng, Liang-Bin; Wei, Lin.
Afiliación
  • Zhai Y; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, No.348 Xianjiahu West Road, Changsha, 410205, Hunan, China.
  • Zhu JX; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, No.348 Xianjiahu West Road, Changsha, 410205, Hunan, China.
  • Tan TM; Hunan Provincial Key Laboratory of Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, 410004, China.
  • Xu JP; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, No.348 Xianjiahu West Road, Changsha, 410205, Hunan, China.
  • Shen AR; Hunan Provincial Key Laboratory of Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, 410004, China.
  • Yang XB; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, No.348 Xianjiahu West Road, Changsha, 410205, Hunan, China.
  • Li JL; Hunan Provincial Key Laboratory of Forestry Biotechnology, Central South University of Forestry and Technology, Changsha, 410004, China.
  • Zeng LB; Hunan Academy of Forestry, Changsha, 410004, China.
  • Wei L; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, No.348 Xianjiahu West Road, Changsha, 410205, Hunan, China.
BMC Microbiol ; 21(1): 75, 2021 03 06.
Article en En | MEDLINE | ID: mdl-33676418
OBJECTIVE: The aim of this study is to evaluate the efficacy of the strain Paenibacillus polymyxa HX-140, isolated from the rhizosphere soil of rape, to control Fusarium wilt of cucumber seedlings caused by Fusarium oxysporum f. sp. cucumerinum. RESULTS: Strain HX-140 was able to produce protease, cellulase, ß-1,3-glucanase and antifungal volatile organic compounds. An in vitro dual culture test showed that strain HX-140 exhibited broad spectrum antifungal activity against soil-borne plant pathogenic fungi. Strain HX-140 also reduced the infection of Fusarium wilt of cucumber seedlings by 55.6% in a greenhouse pot experiment. A field plot experiment confirmed the biocontrol effects and further revealed that antifungal activity was positively correlated with inoculum size by the root-irrigation method. Here, inoculums at 106 107 and 108 cfu/mL of HX-140 bacterial suspension reduced the incidence of Fusarium wilt of cucumber seedling by 19.5, 41.1, and 50.9%, respectively. CONCLUSIONS: Taken together, our results suggest that P. polymyxa HX-140 has significant potential in the control of Fusarium wilt and possibly other fungal diseases of cucumber.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de las Plantas / Cucumis sativus / Interacciones Microbianas / Agentes de Control Biológico / Paenibacillus polymyxa / Fusarium Idioma: En Revista: BMC Microbiol Asunto de la revista: MICROBIOLOGIA Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de las Plantas / Cucumis sativus / Interacciones Microbianas / Agentes de Control Biológico / Paenibacillus polymyxa / Fusarium Idioma: En Revista: BMC Microbiol Asunto de la revista: MICROBIOLOGIA Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido