Endophytic species of Induratia from coffee and carqueja plants from Brazil and its potential for the biological control of toxicogenic fungi on coffee beans by means of antimicrobial volatiles.

Autor: Gomes AAM; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG, Brasil., Paes SA; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG, Brasil., Ferreira APS; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG, Brasil., Pinho DB; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG, Brasil., de Lourdes Cardeal Z; Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil., Menezes HC; Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil., Cardoso PG; Departamento de Biologia, Universidade Federal de Lavras, Lavras, MG, Brasil., Pereira OL; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG, Brasil. oliparini@ufv.br.
Jazyk: angličtina
Zdroj: Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] [Braz J Microbiol] 2023 Mar; Vol. 54 (1), pp. 349-360. Date of Electronic Publication: 2023 Jan 04.
DOI: 10.1007/s42770-022-00887-y
Abstrakt: Several endophytic fungi have been reported to have produced bioactive metabolites. Some of them, including the Induratia species, have the capacity to emit volatile compounds with antimicrobial properties with broad spectrum against human and plant pathogens. The present study aimed to prospect the Induratia species producing volatile organic compounds (VOCs), in carqueja plants used in alternative medicine and coffee plants in Brazil. A total of 11 fungal isolates producing volatile metabolites were obtained by a parallel growth technique, using I. alba 620 as a reference strain. Phylogenetic relationships revealed the presence of at least three distinct species, I. coffeana, I. yucatanensis, and Induratia sp. SPME/GC/MS analyses of the VOCs in the headspace above the mycelium from Induratia species cultured for 10 days on PDA revealed the volatile profile emitted by I. coffeana CCF 572, I. coffeana COAD 2055, I. yucatanensis COAD 2062, and Induratia sp. COAD 2059. Volatile organic compounds produced by I. coffeana isolates presented antimicrobial activity against Aspergillus ochraceus, A. sclerotiorum, A. elegans, A. foetidus, A. flavus, A. tamari, A. tubingensis, A. sydowii, A. niger, A. caespitosus, A. versicolor, and A. expansum, sometimes by decreasing the growth rate or, mainly, by fully inhibiting colony growth. Fifty-eight percent of the target species died after 6 days of exposure to VOCs emitted by I. coffeana CCF 572. In addition, VOCs emitted by the same fungus inhibited the growth in A. ochraceus inoculated into coffee beans, which indicates that plants which have I. coffeana as an endophyte may be protected from attacks by this plant pathogen.
(© 2023. The Author(s) under exclusive licence to Sociedade Brasileira de Microbiologia.)
Databáze: MEDLINE
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