Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/29220
Título: Antifungal activity using medicinal plant extracts against pathogens of coffee tree
Título(s) alternativo(s): Atividade antifúngica utilizando extratos de plantas medicinais contra fitopatógenos do cafeeiro
Palavras-chave: Plantas medicinais - Substâncias antifúngicas
Fitopatógenos - Proteção
Crescimento micelial
Germinação de conídios
Medicinal plants - Antifungal substances
Phytopathogens - Protection
Mycelial growth
Germination of conidia
Data do documento: Jul-2014
Editor: Sociedade Brasileira de Plantas Medicinais
Citação: SILVA, J. L. et al. Antifungal activity using medicinal plant extracts against pathogens of coffee tree. Revista Brasileira de Plantas Medicinais, Campinas, v. 16, n. 3, p. 539-544, 2014.
Resumo: Generally, the medicinal plants have antifungal substances that can be used for the plant protection against phytopathogens. The objective of this study was to know the efficiency of aqueous extracts from medicinal plants against the major etiological agents of coffee tree. The aqueous extracts used were extracted from bulbs of Allium sativum, leaves of Vernonia polysphaera, Cymbopogon citratus, Cymbopogon nardus, Cordia verbenacea, Eucalyptus citriodora, Ricinus communis, Azadirachta indica, Piper hispidinervum and flower buds of Syzygium aromaticum. The etiological agents considered for this study were Cercospora coffeicola, Colletotrichum gloeosporioides, Fusarium oxysporum, Phoma tarda, Rhizoctonia solani and Hemileia vastatrix. The screening for harmful extracts was done based on mycelial growth and conidial germination inhibition. All experiments performed were in vitro conditions. The inhibition of mycelial growth was performed mixing the extracts with the PDA. This mixture was poured in Petri dishes. On the center of the dishes was added one PDA disc with mycelium. It was incubated in a chamber set to 25ºC. The evaluation was done daily by measuring the mycelial growth. The germination assessment was also performed with Petri dishes containing agar-water medium at 2%. These were incubated at 25ºC for 24 hours. After this period the interruption of germination was performed using lactoglycerol. The experiments were conducted in a completely randomized design. The most effective plant extracts against the micelial growth and conidial germination were V. polysphaera, S. aromaticum and A. sativum.
URI: http://repositorio.ufla.br/jspui/handle/1/29220
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