Efeito dos níveis de salinidade na atividade antifúngica do óleo essencial de Thymus contra Fusarium oxysporum

Palavras-chave: Actividad antimicrobiana, biocontrole, extratos de plantas, planta medicinal, cloreto de sódio

Resumo

O tomilho (Thymus sp.), planta medicinal da família Lamiaceae, utilizada na medicina tradicional, contém uma grande variedade de componentes medicinais ativos, em sua grande maioria uma mistura bastante complexa de Timol, ρ-Cymene, γ-Terpinene, β-Caryophyllen, etc. O presente estudo foi avaliar a eficácia do extrato de Thymus vulgaris contra Fusarium oxysporum f. sp. radicis-lycopersici sob condições salinas, assumindo solos com alto teor de sal das regiões áridas. O óleo essencial por extraído pe la técnica de hidrodestilação utilizando aparelho de Clevenger. O composto de óleo essencial por identificado por análise GC-MS. Atividade antifúngica do óleo esencial contra Fusarium oxysporum f. sp. radicis-lycopersici por investigado pelo método de diluição em agar. O principais constituintes do óleo esencial de tomilho foram timol (76.96 %), ρ-cimeno (9.89 %) e γ-Terpineno (1.92 %). O óleo esencial de Timo apresentou alta ativida de in vitro, no control da germinação de conídios e do crescimento micelial. No entanto, o óleo não por significativamente ativo contra produção de esporos meio de salinidade. Os resultados sugerem que o crescimento micelial por estimulado em concentrações de 0,6 – 1.5 %. Pelo contrário, reduziu significativamente na concentração mais alta (2 %). A aplicação de NaCl causou um aumento significativo na produção de conidiogênese em várias concentrações testadas. A germinação dos conídios for levemente inibida pelo cloreto de sódio somente quando a concentração for de 2 %. Os resultados este estudo indicaque a salinidade diminui a eficácia do óleo esencialcontra o patógeno.

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Publicado
2022-08-22
Como Citar
Boumaaza, B., Benada, M., Boudalia, S., Benzohra, I. E., Gacemi, A., Khaladi, O., & Benkhelifa, M. (2022). Efeito dos níveis de salinidade na atividade antifúngica do óleo essencial de Thymus contra Fusarium oxysporum. Revista Da Faculdade De Agronomia Da Universidade De Zulia, 39(3), e223941. Obtido de https://produccioncientificaluz.org/index.php/agronomia/article/view/38616
Secção
Produção Vegetal