In vitro activity of essential oils of Lippia sidoides and Lippia gracilis and their major chemical components against Thielaviopsis paradoxa, causal agent of stem bleeding in coconut palms

Química Nova

Laranjeira, Delson¹  Carvalho Filho, José Luiz Sandes de¹  Universidade Federal Rural de Pernambuco, Recife, Brasil¹  Universidade Federal de Lavras, Lavras, Brasil¹  Universidade Federal de Sergipe, São Cristóvão, Brasil¹  Jesus, Hugo Cesar Ramos de¹  Warwick, Dulce Regina Nunes¹  Alves, Péricles Barreto¹  Blank, Arie Fitzgerald¹  Embrapa Tabuleiros Costeiros, Aracaju, Brasil¹  Carvalho, Rejane Rodrigues da Costa e¹  Souza, Paulo Estevão de¹ 

关键词: coconut;    Lippia;    Thielaviopsis paradoxa.;   

DOI  :  10.1590/S0100-40422013000200007

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Essential oils of Lippia sidoides, Lippia gracilis and their main chemical components were investigated for in vitro control of Thielaviopsis paradoxa. Mycelial growth and a number of pathogen conidia were inhibited by the essential oil of L. sidoides at all concentrations tested (0.2; 0.5; 1.0; 3.0 µL mL-1). L. sidoides oil contained 42.33% thymol and 4.56% carvacrol, while L. gracilis oil contained 10% thymol and 41.7% carvacrol. Mycelial growth and conidial production of T. paradoxa were completely inhibited by thymol at a 0.3 µL m-1 concentration. The results suggest that thymol could potentially be used for controlling coconut stem bleeding.

【 授权许可】

Unknown