Data/hora: 10/06/2024 01:02:59

Provedor de dados: 	Anais da Academia Brasileira de Ciências	
País: 	Brazil	
Título: 	Glandular trichome density and essential oil composition in leaves and inflorescences of Lippia origanoides Kunth (Verbenaceae) in the Brazilian Cerrado	
Autores: 	Tozin,Luiz R.S.; Marques,Marcia O.M.; Rodrigues,Tatiane M.	
Data: 	2015-06-01	
Ano: 	2015	
Palavras-chave: 	Campo cerrado; Cerrado stricto sensu; External glands; Terpenes.	
Resumo: 	The essential oils from leaves and inflorescences of Lippia origanoides Kunth present aromatic and medicinal potential and have been used to treat several diseases, including melanoma. In Brazil, L. origanoides is commonly found in campo cerrado and cerrado stricto sensu, physiognomies featured mainly by the differential light conditions to which short and medium-sized plants are subjected. Our aim was to investigate the glandular trichome density and the yield and chemical composition of the essential oils in leaves and inflorescences of L. origanoides from campo cerrado and cerrado stricto sensu. For glandular density analysis, leaves and inflorescences were processed according to conventional techniques for scanning electron microscopy. The essential oils of leaves and inflorescences were obtained by hydrodistillation and identified with gas chromatography. Bracts and sepals showed the highest glandular density, followed by petals and leaves. The glandular density in the abaxial leaf surface was higher in individuals from the campo cerrado. In both populations the essential oil yield was higher in inflorescences than in leaves. The chemical composition of the essential oils varied among individuals from different areas and inside a same population. Our results demonstrated the chemical plasticity of L. origanoides suggesting the importance of monitoring its popular use.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200943	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201520140376	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.87 n.2 2015	
Fonte: 	info:eu-repo/semantics/openAccess