Phytotoxic activity of crude aqueous extracts and fractions of young leaves of Sapindus saponaria L. (Sapindaceae)

AUTOR(ES)

Grisi, Patrícia Umeda, Gualtieri, Sônia Cristina Juliano, Ranal, Marli Aparecida, Santana, Denise Garcia de

FONTE

Acta Bot. Bras.

DATA DE PUBLICAÇÃO

2013-03

RESUMO

The aim of this study was to evaluate the phytotoxic potential of aqueous extract of young leaves of Sapindus saponaria L. (soapberry) on the diaspore germination and seedling growth Lactuca sativa L. (lettuce) and Allium cepa L. (onion), as well as to determine, by bioassay-guided fractioning, whether the fractionated extracts of those leaves are phytotoxic to Triticum aestivum L. (wheat) coleoptiles. The aqueous extract was prepared using 100 g of dried plant material dissolved in 1000 ml of distilled water, resulting in a concentration of 10.0%. Distilled water was added in order to obtain dilutions of 7.5%, 5.0%, and 2.5%. The extraction was carried out with young leaves (in powder form) and organic solvents of various polarities. We fractioned the ethyl acetate extract using column chromatography. The phytotoxic potential of the aqueous extract of young leaves S. saponaria varied according to the receiving species and the concentration-dependent inhibitory effect. The ethyl acetate extract, specifically fraction 6 (57-70), had the greatest inhibitory effect on the elongation of wheat coleoptiles, indicating that the compounds responsible for the phytotoxic effect reside within this fraction.

Documentos Relacionados

• Potencial alelopático de Sapindus saponaria L. (Sapindaceae)
• Antifungal activity of the extracts and saponins from Sapindus saponaria L.
• Potencial larvicida de Sapindus saponaria (Sapindaceae) sobre Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae)
• Estrutura e desenvolvimento de sementes de Paullinia L. (Sapindaceae)
• Effect of the aqueous extracts of the seeds of Talisia esculenta and Sapindus saponaria on fall armyworm