Mycorrhizal fungi isolated from Chilean orchids as biocontrollers of the pathogen Rhizoctonia solani

Authors

  • Guillermo Pereira Laboratorio Biotecnología de Hongos, Departamento de Ciencias y Tecnología Vegetal, Campus Los Ángeles, Universidad de Concepción, Los Ángeles, Chile.
  • Nicole Roa Laboratorio Biotecnología de Hongos, Departamento de Ciencias y Tecnología Vegetal, Campus Los Ángeles, Universidad de Concepción, Los Ángeles, Chile.
  • Diyanira Castillo-Novales Laboratorio Biotecnología de Hongos, Departamento de Ciencias y Tecnología Vegetal, Campus Los Ángeles, Universidad de Concepción, Los Ángeles, Chile. https://orcid.org/0000-0001-8639-0078
  • César Arriagada Laboratorio de Biorremediación, Departamento de Ciencias Forestales, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco, Chile. https://orcid.org/0000-0002-8549-6302
  • Héctor Herrera Laboratorio de Biorremediación, Departamento de Ciencias Forestales, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco, Chile. https://orcid.org/0000-0002-2862-4726
  • Marco Molina-Montenegro Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile.
  • Cristian Atala Instituto de Biología, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Campus Curauma, Valparaíso, Chile. https://orcid.org/0000-0003-1337-9534

Keywords:

Ceratobasidium, dual culture, orchid fungi, pathogenic Rhizoctonia, biological control

Abstract

Phytopatogenic fungi cause severe economic losses worldwide. Rhizoctonia solani Kühn is a pathogenic fungi affecting several crops, controlled mainly by agrochemicals. Biological control has arisen as another option for managing this pathogen. In this study, we evaluated the biocontroller potential of five orchid mycorrhizal fungi (OMF) isolated from terrestrial Chilean orchids on R. solani. We compared the biocontroller effect of these OMFs with that of Trichoderma harzianum Rifai in an in vitro dual culture experiment. We found that R. solani can be controlled in vitro by OMF isolated from native orchids. The OMF isolated from Chloraea virescens and C. lamellata showed the best biocontroller results, which were similar, or even higher, than with T. harzianum. Thus, OMFs could become a relevant alternative for the integral control of R. solani, contributing to the reduction in the use of agrochemicals in crops.

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Published

2021-12-31

How to Cite

(1)
Pereira, G.; Roa, N.; Castillo-Novales, D.; Arriagada, C.; Herrera, H.; Molina-Montenegro, M.; Atala, C. Mycorrhizal Fungi Isolated from Chilean Orchids As Biocontrollers of the Pathogen Rhizoctonia Solani. Gayana Bot. 2021, 78, 113-120.

Issue

Vol. 78 No. 2 (2021)

Section

ORIGINAL ARTICLES

License

Copyright (c) 2021 Guillermo Pereira, Nicole Roa, Diyanira Castillo-Novales, César Arriagada, Héctor Herrera, Marco Molina-Montenegro, Cristian Atala

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