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Alternative control of grape rots by essential oils of two Eucalyptus species.
Pedrotti, Carine; Marcon, Ângela Rossi; Delamare, Ana Paula Longaray; Echeverrigaray, Sérgio; da Silva Ribeiro, Rute Terezinha; Schwambach, Joséli.
Afiliação
  • Pedrotti C; Laboratory of Plant Disease Control and Laboratory of Plant Biotechnology, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil.
  • Marcon ÂR; Laboratory of Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil.
  • Delamare APL; Laboratory of Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil.
  • Echeverrigaray S; Laboratory of Applied Microbiology, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil.
  • da Silva Ribeiro RT; Laboratory of Plant Disease Control and Laboratory of Plant Biotechnology, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil.
  • Schwambach J; Laboratory of Plant Disease Control and Laboratory of Plant Biotechnology, Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, Brazil.
J Sci Food Agric ; 99(14): 6552-6561, 2019 Nov.
Article em En | MEDLINE | ID: mdl-31321781
BACKGROUND: Essential oils (EOs) are volatile natural compounds produced by plant secondary metabolism, and some of them exhibit antimicrobial activity. The objective of the present study was to determine the chemical composition the EOs of Eucalyptus staigeriana and Eucalyptus globulus, and their effect in vitro and in vivo against Botrytis cinerea and Colletotrichum acutatum, the most important fungal rot diseases of grapes. Moreover, grapes collected from field experiments were used to evaluate the impact of the alternative control on the alcoholic fermentation and wine composition. RESULTS: The major compound of E. staigeriana EO were citral 30.91% (19.74% geranial, 11.17% neral), 1.8-cineole (24.59%) and limonene (19.47%), while 1.8-cineole represented 68.26% of E. globulus EO. The two EOs showed in vitro antifungal activity against both pathogens. Eucalyptus staigeriana EO exhibited the highest activity inhibiting mycelial growth (MG) and conidial germination at 0.5 µL mL-1 . Moreover, this EO was able to reduce the incidence and severity of grey rot caused by B. cinerea and the severity of ripe rot caused by C. acutatum The alternative control did not significantly influence alcoholic fermentation, the physicochemical characteristics, and the volatile composition of wines. CONCLUSION: These results are promising and indicate that E. staigeriana EO might be further investigated as a natural alternative for the control of fungal rots on wine grapes. © 2019 Society of Chemical Industry.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Óleos Voláteis / Extratos Vegetais / Vitis / Eucalyptus / Antifúngicos Idioma: En Revista: J Sci Food Agric Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Óleos Voláteis / Extratos Vegetais / Vitis / Eucalyptus / Antifúngicos Idioma: En Revista: J Sci Food Agric Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido