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

Rejane Rodrigues Da Costa E Carvalho²  Delson Laranjeira²  José Luiz Sandes De Carvalho Filho²  Paulo Estevão De Souza¹  Arie Fitzgerald Blank¹  Péricles Barreto Alves¹  Hugo Cesar Ramos De Jesus¹  Dulce Regina Nunes Warwick¹ 

[1] ,Universidade Federal Rural de Pernambuco Departamento de Agricultura Recife PE ,Brasil

关键词: coconut;    Lippia;    Thielaviopsis paradoxa;   

DOI  :  10.1590/S0100-40422013000200007

来源: SciELO

【 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】

CC BY-NC   
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