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- Title
In vitro antifungal activity of Ocimum selloi essential oil and methylchavicol against phytopathogenic fungi.
- Authors
Bomfim Costa, Larissa Corrêa; Pereira Pinto, José Eduardo Brasil; Vilela Bertolucci, Suzan Kelly; do Bomfim Costa, João Cássia; Alves, Péricles Barreto; dos Santos Niculau, Edenilson
- Abstract
The efficacy of Ocimum selloi essential oil was evaluated for controlling the growth of mycelia and spores germination Moniliophthora perniciosa. Six compounds (99.89%) of the total oil were identified by GC-MS, of which methyl chavicol, methyl eugenol, β-caryophyllene, germacrene-D, bicyclogermacrene and spathulenol. Essential oil was tested for antifungal activity, which was determined by disc diffusion and minimum inhibitory concentration (MIC) determination methods. Application of the oil reduced mycelial growth in a dose dependent manner, with maximum inhibition being observed at concentration of 1,000 ppm. Such antifungal activity could be attributed to methyl chavicol since the pure compound was shown to be similarly effective against Moniliophthora perniciosa at 1,000 ppm. The oil when applied at a concentration of 1,000 ppm, reduced the spore germination of Colletotrichum gloeosporioides and M. perniciosa by 93 and 87%, respectively, but had no effect on the Alternaria alternata. It is concluded that the oil from O. selloi and its major constituent, methyl chavicol, are efficient in inhibiting M. perniciosa, but less effective against C. gloeosporioides and A. alternata. The results obtained from this work may contribute to the development of alternative anti-fungal agents to protect the cacao crop from fungal disease.
- Subjects
ANTIFUNGAL agents; BASIL; PHYTOPATHOGENIC fungi; AGONOMYCETALES; CARYOPHYLLENE; GERMACRENE
- Publication
Revista Ciência Agronômica, 2015, Vol 46, Issue 2, p428
- ISSN
0045-6888
- Publication type
Article