Artículos de revistas
Phytotoxicity of secondary metabolites isolated from Flourensia oolepis S.F.Blake.
Fecha
2013-07Registro en:
Palacios, Sara Maria; Diaz Napal, Georgina Natalia; Phytotoxicity of secondary metabolites isolated from Flourensia oolepis S.F.Blake.
; Wiley Vch Verlag; Chemistry and Biodiversity; 10; 7-2013; 1295-1304
1612-1872
Autor
Palacios, Sara Maria
Diaz Napal, Georgina Natalia
Resumen
The aim of this study was to isolate the active principles of Flourensia oolepis S.F.Blake (Asteraceae), which completely inhibited the germination of Raphanus sativus seeds at 10 mg/ml. Flavanone pinocembrin and sesquiterpene ilicol, were isolated by bioassay-guided fractionation. They were active both against monocot and dicot seeds. Pinocembrin was the most active compound, with an IC50(germination) value of 0.24, 3.40, 3.28, and 3.55 mM against Panicum miliaceum, Avena sativa, Lactuca sativa, and R. sativus, respectively; ilicol, however, exhibited IC50(germination) values of 0.67, 2.73, 5.25, and 9.66 mM for the same species, respectively. Pinocembrin and ilicol inhibited root growth and showed IC50(root growth) values of 0.199, 14.68, 8.05, 7.69 mM, and 1.22, 2.90, 7.35, 8.07 mM, against P. miliaceum, A. sativa, L. sativa, and R. sativus, respectively. Pinocembrin and ilicol reduced Allium cepa cell division without chromosome aberrations.