• Marie Caroline Ferreira Laborde Universidade Federal de Lavras/UFLA - Departamento de Fitopatologia/DFP
  • Deila Magna dos Santos Botelho Universidade Federal de Lavras/UFLA - Departamento de Fitopatologia/DFP
  • Gabriel Alfonso Alvarez Rodriguez Universidade Federal de Lavras/UFLA - Departamento de Fitopatologia/DFP
  • Mário Lúcio Vilela de Resende Universidade Federal de Lavras/UFLA - Departamento de Fitopatologia/DFP
  • Marisa Vieira de Queiroz Universidade Federal de Viçosa/UFV - Departamento de Microbiologia
  • Aline Duarte Batista Universidade Federal de Viçosa/UFV - Departamento de Microbiologia
  • Patrícia Gomes Cardoso Universidade Federal de Lavras/UFLA - Departmento de Biologia/DBI
  • Sérgio Florentino Pascholati Escola Superior de Agricultura Luiz de Queiroz - Universidade de São Paulo - Departamento de Fitopatologia e Nematologia
  • Luis Fernando Pascholati Gusmão Universidade Estadual de Feira de Santana - Departamento de Ciências Biológicas
  • Samuel Júlio Martins Department of Plant Pathology and Environmental Microbiology - Pennsylvania State University - University Park,
  • Flávio Henrique Vasconcelos de Medeiros Universidade Federal de Lavras/UFLA - Departamento de Fitopatologia/DFP


Coffea arabica, competição, controle biológico, macha de olho pardo, antibiose


Saprobe fungi and necrotrophic pathogens share the same niche within crop stubble and the search for fungi non-pathogenic to plants that are able to displace the plant pathogens from its overwintering substrate contributes to the disease management. Brown eye spot (Cercospora coffeicola) is among the most important coffee diseases, it is caused by a necrotrophic pathogen that has decaying leaves as its major source of inoculum. We have screened saprobe fungi for the ability to reduce C. coffeicola sporulation and viability and determined the possible mechanisms involved in the observed biocontrol. A selected saprobe fungus, Phialomyces macrosporus, reduced the pathogen’s viability by 40% both in vitro and in vivo. The fungus acts through antibiosis and competition for nutrients. It produced both volatile and non-volatile compounds that inhibited C. coffeicola growth, sporulation, and viability. It also produced the tissue maceration enzyme (polygalacturonase), which reduces the pathogen both in detached leaves or in planta. The reduction in the fungal viability either by the saprobe fungus or its polygalacturonase-fraction supernatant resulted in the reduction of the disease rate. Therefore, P. macrosporus is a potential microbial agent that can be used in an integrated management of brown eye spot through the reduction of the initial inoculum of the pathogen that survives and builds up in infected leaves.


Author Biography

Flávio Henrique Vasconcelos de Medeiros, Universidade Federal de Lavras/UFLA - Departamento de Fitopatologia/DFP

Departamento de Fitopatologia


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How to Cite

LABORDE, M. C. F.; BOTELHO, D. M. dos S.; RODRIGUEZ, G. A. A.; RESENDE, M. L. V. de; QUEIROZ, M. V. de; BATISTA, A. D.; CARDOSO, P. G.; PASCHOLATI, S. F.; GUSMÃO, L. F. P.; MARTINS, S. J.; MEDEIROS, F. H. V. de. PHIALOMYCES MACROSPORUS REDUCES CERCOSPORA COFFEICOLA SURVIVAL ON SYMPTOMATIC COFFEE LEAVES. Coffee Science - ISSN 1984-3909, [S. l.], v. 14, n. 1, p. 1–11, 2019. Disponível em: Acesso em: 18 may. 2022.