Ação do óleo essencial de Syzygium aromaticum (L.) Merr. & L.M.Perry sobre as hifas de alguns fungos fitopatogênicos
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Data
2011
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Resumo
Currently, the use of alternative methods to control
diseases and pests in agriculture has been a recognized and necessary practice to minimize
damages to the environment and public health. This study aimed to investigate the action of clove
[Syzygium aromaticum (L.) Merr. & L.M.Perry] essential oil on the in vitro mycelial growth of the
phytopathogenic fungi Rhizoctonia solani, Fusarium solani, Fusarium oxysporum and Macrophomina
phaseolina. Analysis by gas chromatography-mass spectrometry allowed the identification of
eugenol (83.6%), eugenyl acetate (11.6%) and caryophyllene (4.2%). Microscopic evaluation of
mycelia showed several morphological changes such as presence of vacuoles, cell content
disorganization, decreased cell wall clearness, intense fragmentation and lower turgescence of
hyphae. Clove essential oil showed fungicidal activity at 0.15% on the growth of R. solani, F.
oxysporum and F. solani, but not for M. phaseolina. These results indicate favorable perspectives
for future use of clove essential oil to control these phytopathogens in agriculture.
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Palavras-chave
Antifúngicos naturais, Óleos essenciais, Cravo-da-Índia, Syzigium aromaticum, Eugenol, Natural antifungals, Essential oils, Syzigium aromaticum, Clove, Eugenol
Citação
COSTA, A. R. T. et al. Ação do óleo essencial de Syzygium aromaticum (L.) Merr. & L.M.Perry sobre as hifas de alguns fungos fitopatogênicos. Revista Brasileira de Plantas Medicinais, Botucatu, v. 13, n. 2, p. 240-245, 2011.