Toxic effects of individual and combined effects of BTEX on Euglena gracilis

Peng, Cheng, Lee, Jong-Wha, Sichani, Homa Teimouri and Ng, Jack C. (2015) Toxic effects of individual and combined effects of BTEX on Euglena gracilis. Journal of Hazardous Materials, 284 10-18. doi:10.1016/j.jhazmat.2014.10.024


Author Peng, Cheng
Lee, Jong-Wha
Sichani, Homa Teimouri
Ng, Jack C.
Title Toxic effects of individual and combined effects of BTEX on Euglena gracilis
Formatted title
Toxic effects of individual and combined effects of BTEX on Euglena gracilis
Journal name Journal of Hazardous Materials   Check publisher's open access policy
ISSN 1873-3336
0304-3894
Publication date 2015-03-02
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jhazmat.2014.10.024
Volume 284
Start page 10
End page 18
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Formatted abstract
BTEX is a group of volatile organic compounds consisting of benzene, toluene, ethylbenzene and xylenes. Environmental contamination of BTEX can occur in the groundwater with their effects on the aquatic organisms and ecosystem being sparsely studied. The aim of this study was to evaluate the toxic effects of individual and mixed BTEX on Euglena gracilis (E. gracilis). We examined the growth rate, morphological changes and chlorophyll contents in E. gracilis Z and its mutant SMZ cells treated with single and mixture of BTEX. BTEX induced morphological change, formation of lipofuscin, and decreased chlorophyll content of E. gracilis Z in a dose response manner. The toxicity of individual BTEX on cell growth and chlorophyll inhibition is in the order of xylenes > ethylbenzene > toluene > benzene. SMZ was found more sensitive to BTEX than Z at much lower concentrations between 0.005 and 5 μM. The combined effect of mixed BTEX on chlorophyll contents was shown to be concentration addition (CA). Results from this study suggested that E. gracilis could be a suitable model for monitoring BTEX in the groundwater and predicting the combined effects on aqueous ecosystem.
Keyword Volatile organic compounds (VOCs)
Cell toxicology
Chlorophyll
Mixed contaminants
Combined effects
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 28 Oct 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
National Research Centre for Environmental Toxicology Publications
 
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