Application of two bioassays as potential indicators of phenol phytoremediation efficiency by tobacco hairy roots.

Environmental Technology
Cintia E PaisioPaola S González

Abstract

Phenol is one of the contaminants most frequently found in the environment and it is considered a priority pollutant due to their toxic effects. Hairy roots (HR) constitute a good model tool for the removal of this contaminant. In this work, phenol removal using wild type (WT) and double transgenic (DT) Nicotiana tabacum HR was performed with high efficiency (60-80%, for 25-250 mg L-1 phenol solutions, respectively). After phytoremediation process, the toxicity of post removal solutions (PRS) was evaluated through two-toxicity test belonging to two trophic levels, Lactuca sativa test and Rhinella arenarum (AMPHITOX). Toxicity of PRS showed variable results since these solutions were less toxic to L. sativa seeds compared to R. arenarum embryos, which could be attributed to different sensitivities of the exposed organisms. Although PRS obtained using WT and DT HR reduced phenol phytotoxicity on L. sativa seeds, WT PRS were even less toxic than DT PRS according to this test. Regarding AMPHITOX, HR culture medium without phenol but incubated with HR and phenol PRS exerted a toxic effect on the embryos, which could be related to the presence of toxic products derived from HR metabolism. The results demonstrated that an efficient ph...Continue Reading

References

Oct 31, 2002·Water Research·Monika Wagner, James A Nicell
Feb 3, 2009·Journal of Hazardous Materials·Cintia Elizabeth PaisioMabel Lucía Bertuzzi
Dec 22, 2009·Journal of Hazardous Materials·Melina A TalanoElizabeth Agostini
Oct 19, 2010·Journal of Hazardous Materials·Vanina A AngeliniElizabeth Agostini
Aug 9, 2011·Environmental Science and Pollution Research International·Paola S GonzálezElizabeth Agostini
May 8, 2015·International Journal of Phytoremediation·Hamide Mazaheri, Khosro Piri
Jan 10, 2016·Ecotoxicology and Environmental Safety·Jihae ParkTaejun Han
Apr 14, 2016·Environment International·Sedky H A HassanSang-Eun Oh
May 10, 2016·International Journal of Phytoremediation·Kouamé Kouamé VictorAtsé Boua Celestin

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Methods Mentioned

BETA
transgenic

Software Mentioned

STATISTICA
AMPHITOX

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