Comparison of different physiological parameter responses in Lemna minor and Scenedesmus obliquus exposed to herbicide flumioxazin
Comparison of different physiological parameter responses in Lemna minor and Scenedesmus obliquus exposed to herbicide flumioxazin
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DOI：
10.1016/j.envpol.2004.02.021
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发表时间：
2004-09-01
影响因子：
8.9
通讯作者：
Eullaffroy, P
中科院分区：
文献类型：
--
作者：
Geoffroy, L;Frankart, U;Eullaffroy, P
研究了栅藻和浮萍不同生理指标对除草剂氟草嗪的敏感性，以确定最方便、最敏感的指标。为了评估氟苯恶嗪的毒性，我们使用了一组生物标志物：色素含量，叶绿素荧光参数和抗氧化酶活性。藻类和浮萍暴露于48小时的生长速率IC 50。在洛各参数的敏感性大小为：Q（N）>氧释放量> PhiS（PSH）> Q（P）> Phi（PSII）> CAT、GR >色素> APO >生长。对于鼠伤寒沙门氏在此基础上，对不同的生长因子敏感性排序为：CAT >氧释放> Q（P）> APO > GR >色素> PhiS（PSII）>生长> Phi（PSH）> Q（N）（从最大到最小）。结果表明，所观察到的毒性不仅与种间变异有关，而且与所选参数有关。(C)2004爱思唯尔有限公司保留所有权利。
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 IC50 for growth rate. In L. minor, the sensitivity of the parameters was as follows: Q(N) > Oxygen emission > PhiS(PSH) > Q(P) > Phi(PSII) > CAT, GR > Pigment > APO > Growth. For S. obliquus, this ranking was as follows: CAT > Oxygen emission > Q(P) > APO > GR > Pigment > PhiS(PSII) > Growth > Phi(PSH) > Q(N) (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. (C) 2004 Elsevier Ltd. All rights reserved.