SciELO - Scientific Electronic Library Online

 
vol.20 issue1In vitro EVALUATION OF THE ANTIBACTERIAL AND MODULATORY ACTIVITIES OF CORN AND SOY FIXED OILSEvaluation of Antibacterial Activity of Aminoglycosides and Modulating the Essential Oil of Cymbopogon citratus (DC.) Stapf author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Acta Biológica Colombiana

Print version ISSN 0120-548X

Abstract

DE CASSIA PEREIRA, Viviane et al. ALLELOPATHIC POTENTIAL OF Serjania lethalis: EVIDENCE FROM Sesamum indicum. Acta biol.Colomb. [online]. 2015, vol.20, n.1, pp.31-37. ISSN 0120-548X.  http://dx.doi.org/10.15446/abc.v20n1.41661.

This study was designed to test the effect of different fractions of ethanolic extracts of young (y) and mature (m) leaves of Serjania lethalis A. St- Hil (Sapindaceae) on sesame (Sesamum indicum L.) seedling growth and metaxylem cells. Crude ethanolic extracts were prepared from the powder of young and mature S. lethalis leaves and fractionated by means of column chromatography. For the seedling growth bioassay, sesame seeds germinated at concentrations of 0.8, 0.4 and 0.2 mg mL-1 were used. After seven days, the lengths of the aerial part and of the primary root were measured. The sesame metaxylem cell growth bioassay was performed with seedlings grown in solutions containing the different fractions in the same concentrations as above. The tested fractions (Fy2; Fy3; Fy5 e Fm1) showed inhibitory activity on seedling growth, interfering mainly in root growth. The fraction Fy5 showed similar activity to the one caused by the herbicide Oxyfluorfen. This fraction was also responsible for causing the greatest inhibition of metaxylem cell growth in sesame roots at the concentration 0.8 mg mL-1. The results permitted to conclude that the different fractions found in the ethanolic extract of S. lethalis young leaves are promising sources of substances with phytotoxic properties.

Keywords : Cerrado; phytotoxicity; Sapindaceae; sesame; xylem development.

        · abstract in Spanish     · text in English     · English ( pdf )