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  • Vol. 2023, 41(3)
  • Phytopathological Note

In vitro antagonism of Trichoderma against Rhizoctonia solani

By Jesús Orlando Pérez González, Sergio Gavino Ramírez Rojas, Ramiro Rocha Rodríguez, Katya Ornelas Ocampo, Jorge Miguel Vázquez Alvarado, Filogonio Jesús Hernández Guzmán, Mariel Garduño Audelo*

*Corresponding Author.

Received: 30/October/2022 – Published: 15/June/2023
DOI: https://doi.org/10.18781/R.MEX.FIT.2304-2

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    • Pérez-González JO, Ramírez-Rojas SG, Rocha-Rodríguez R, Ornelas-Ocampo K, Vázquez-Alvarado JM, Hernández-Guzmán FJ, Garduño-Audelo M. 2022. In vitro antagonism of Trichoderma against Rhizoctonia solani. Mexican Journal of Phytopathology 41(3):514-523. https://doi.org/10.18781/R.MEX.FIT.2304-2
    • Pérez-González, JO, Ramírez-Rojas, SG, Rocha-Rodríguez, R, Ornelas-Ocampo, K, Vázquez-Alvarado, JM, Hernández-Guzmán, FJ y Garduño-Audelo, M (2022). In vitro antagonism of Trichoderma against Rhizoctonia solani. Mexican Journal of Phytopathology 41(3):514-523. https://doi.org/10.18781/R.MEX.FIT.2304-2
    • Jesús Pérez-GonzálezO, Sergio Ramírez-RojasG, Ramiro Rocha-Rodríguez, Katya Ornelas-Ocampo, Jorge Vázquez-AlvaradoM, Filogonio Hernández-GuzmánJ y Mariel Garduño-Audelo. 2022. In vitro antagonism of Trichoderma against Rhizoctonia solani. Mexican Journal of Phytopathology 41(3):514-523. https://doi.org/10.18781/R.MEX.FIT.2304-2
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Abstract Trichoderma spp., is a highly efficient antagonist of root pathogens, such as Rhizoctonia solani, which causes loss in many crops. The aim of this research was to evaluate in vitro the antagonistic capacity of T. viride, T. koningii, T. harzianum and Trichoderma spp. isolates against R. solani from a potato crop. In confrontation tests, all Trichoderma isolates were classified as antagonists class 2 according to Bell scale, where T. harzianum and T. koningii showed more than 60% inhibition of the radial growth of R. solani at 120 h. In the interaction between T. harzianum and Trichoderma spp. with R. solani, as mycoparasitism strategy, vacuolization, lysis, coiling, and penetration were demonstrated, the last two were present in all Trichoderma isolates evaluated.

Keywords: Confrontation, mycoparasitism, biocontrol, biofungicide