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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 11, No. 6, 2014, pp. 1679-1690
Bioline Code: st14164
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 11, No. 6, 2014, pp. 1679-1690

 en Vicia sativa check for this species in other resources –rhizospheric bacteria interactions to improve phenol remediation
Ibáñez, S.G.; Merini, L.J.; Barros, G.G.; Medina, M.I. & Agostini, E.

Abstract

The aim of this study was to evaluate whether the interaction of Vicia sativa check for this species in other resources with a bacterial strain capable of using phenol as sole carbon and energy sources can moderate adverse effects of this pollutant in plant tissues. A bacterial strain identified as Bacillus check for this species in other resources sp., isolated from a heavily polluted environment, was inoculated at different stages of growth. In root elongation assay, inoculated seeds showed higher values of relative root elongation and germination index than uninoculated ones in the presence of high phenol concentrations. Thus, common vetch–Bacillus sp. association could be important at the first stages of development allowing this plant to grow in highly polluted environments. Besides, phenol removal was largely accelerated in phenol-spiked soils, after 48 h of treatment with uninoculated/inoculated plants rather than by adsorption or biodegradation of the bacterial strain. Peroxidase and ascorbate peroxidase activities increased significantly in uninoculated plants, while superoxide dismutase activity, chlorophyll, malondialdehyde, and H2O2 levels of aerial parts remained unaltered in uninoculated/ inoculated plants treated with the pollutant, demonstrating that the efficient response to oxidative damage did not depend on the inoculation.

Keywords
Polluted soil; Organic compounds; Rhizosphere; Antioxidant enzymes

 
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