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Comparison of different physiological parameter responses in Lemna minor and Scenedesmus obliquus exposed to herbicide flumioxazin.
- Source :
- Environmental Pollution; Sep2004, Vol. 131 Issue 2, p233-241, 9p
- Publication Year :
- 2004
-
Abstract
- The sensitivity of different physiological parameters in Scenedesmus obliquus and Lemna minor exposed to herbicide (flumioxazin) was investigated to indicate the most convenient and sensitive parameter. To assess toxicity of flumioxazin, we used a panel of biomarkers: pigment contents, chlorophyll fluorescence parameters and antioxidative enzyme activities. Algae and duckweed were exposed to 48-h IC<subscript>50</subscript> for growth rate. In L. minor, the sensitivity of the parameters was as follows: <f>Q<subscript>N</subscript>>Oxygen emission>Φs<subscript>PSII</subscript>>Q<subscript>P</subscript>>Φ<subscript>PSII</subscript>>CAT, GR>Pigment>APO>Growth</f>. For S. obliquus, this ranking was as follows: <f>CAT>Oxygen emission>Q<subscript>P</subscript>>APO>GR>Pigment>Φs<subscript>PSII</subscript>>Growth>Φ<subscript>PSII</subscript>>Q<subscript>N</subscript></f> (from the greatest to the least sensitive). The results demonstrated that the observed toxicity is related not only to interspecific variations but also to the selected parameter. [Copyright &y& Elsevier]
- Subjects :
- PHYSIOLOGY
BIOMARKERS
CHLOROPHYLL
OXYGEN
Subjects
Details
- Language :
- English
- ISSN :
- 02697491
- Volume :
- 131
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- Environmental Pollution
- Publication Type :
- Academic Journal
- Accession number :
- 13688021
- Full Text :
- https://doi.org/10.1016/j.envpol.2004.02.021