Antifungal Activity of Piper marginatum L. (Piperaceae) Essential Oil on in Vitro Fusarium oxysporum (Schlecht)

• Autor(a) principal: Santos, Maurício Reginaldo Alves dos
• Data de Publicação: 2011
• Outros Autores: Lima, Renato Abreu, Fernandes, Cléberson de Freitas, Silva, Andrina Guimarães, Facundo, Valdir Alves
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Saúde e Pesquisa (Online)
• Texto Completo: https://periodicos.unicesumar.edu.br/index.php/saudpesq/article/view/1700
• topic: Phytopathology; Biological Control; Natural Products.; Fitopatologia; Controle Biológico; Produtos Naturais.

Piper marginatum is used in popular medicine as a tonic, diuretic and for the treatment of snakes and insects bites. Fusarium oxysporum is a fungus which causes diseases in large agricultural areas in Brazil, such as in banana plantations. Current analysis evaluates the effects of the essential oil from leaves of P. marginatum on the in vitro growth of F. oxysporum colonies. Further, 5-mm diameter discs from isolated cultures of the fungus were placed in the center of 90-mm diameter petri dishes with potato dextrose agar. Four discs of filter paper were placed with 10 µL of essential oil, extracted by distillation, in the dishes’ peripheral area. Controls consisted of discs without essential oil. A completely randomized design was used with four replications. Fungi growth was evaluated by measuring the diameter of the colonies every 24 hours, during 8 days. After 92 hours, the F. oxysporum colonies treated with essential oil had a 22.5-mm diameter, whereas controls developed mean 69.9- mm colonies. Results show that the essential oil from leaves of P. marginatum has an inhibitory effect on the in vitro growth of F. oxysporum.