Toxicity assessment of 40 herbicides to the green alga Raphidocelis subcapitata

Ma, Jing; Wang, Shufeng; Wang, Pinwei; Ma, Lifeng; Chen, Xiling; Xu, Renjie

doi:10.1016/j.ecoenv.2004.12.001

Cited by 126 publications

(51 citation statements)

References 24 publications

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“…96 h-EC 50 values are reported as 0.7, 3.3, and 4.3 g/L for P. subcapitata (e.g. Raphidocelis subcapitata), Scenedesmus subspicatus, and Chlorella vulgaris, respectively (Ma et al, 2002;Agritox, 2006;Ma et al, 2006). Diuron is moderately toxic to fish and slightly toxic to aquatic invertebrates.…”

Section: Discussionmentioning

confidence: 99%

“…Microalgae and crustaceans were four to five-fold more sensitive to Roundup than bacteria and protozoa. Effects of glyphosate and commercial formulations on plants and algae have been reported in the literature (Sáenz et al, 1997;Ma et al, 2002;Cedergreen and Streibig, 2005;Agritox, 2006;Ma et al, 2006;Pettersson and Ekelund, 2006;Toxnet, 2006). The toxicity of glyphosate has also been studied in a range of organisms including fish (salmon, trout, catfish), aquatic invertebrates (daphnids, midge's larvae) and ciliated protozoa (T. thermophila, Ichthyophthirius multililiis) (Folmar et al, 1979;Servizi et al, 1987;Mann and Bidwell, 1999;Everett and Dickerson, 2003;Agritox, 2006).…”

Section: Discussionmentioning

confidence: 99%

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Assessment of the potential toxicity of herbicides and their degradation products to nontarget cells using two microorganisms, the bacteria Vibrio fischeri and the ciliate Tetrahymena pyriformis

Bonnet¹,

Bonnemoy

Dusser³

et al. 2007

Environmental Toxicology

107

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ABSTRACT:The potential toxicity of several herbicides-alachlor, diuron and its photo and biotransformation products, glyphosate and its metabolite aminomethyl phosphonic acid (AMPA)-to nontarget cells was assessed using two microorganisms frequently used in ecotoxicology, Vibrio fischeri and Tetrahymena pyriformis. Toxicity assays involved the Microtox 1 test, the T. pyriformis population growth impairment test employing three different processes (flasks, tubes, microplates), and the T. pyriformis nonspecific esterase activities test. Several IC 50 or EC 50 values are reported for each molecule. Alachlor exerted a toxic effect on the two nontarget cells used. The results for diuron and its photo and biotransformation products indicated that most of the metabolites presented nontarget toxicity higher than that of diuron. Glyphosate and AMPA had a less negative effect on T. pyriformis than on V. fischeri. Nevertheless, in all cases, glyphosate was found to be more toxic than AMPA. Comparison analysis of the sensitivity of the different tests showed that, in general, tests using the eukaryotic cell (T. pyriformis) were more sensitive than test using the prokaryotic cell (V. fischeri), and that a population growth criterion is more sensitive than an enzymatic criterion. The three different processes that could be used to evaluate effects on population growth rate were equally sensitive for the herbicides tested. A significant correlation between toxicity data and the hydrophobicity of the chemicals could only be established with the growth population test. This study demonstrates that it is essential to assess the toxicity of the metabolites formed to complete a more comprehensive study of the environmental impact of a polluting agent. # 2007 Wiley Periodicals, Inc. Environ Toxicol 22: 78-91, 2007.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Assessment of the potential toxicity of herbicides and their degradation products to nontarget cells using two microorganisms, the bacteria Vibrio fischeri and the ciliate Tetrahymena pyriformis

Bonnet¹,

Bonnemoy

Dusser³

et al. 2007

Environmental Toxicology

107

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“…(Weiner et al, 2004). Comparing the acute toxicity of 40 herbicides exerting nine different modes of action on the green alga Raphidocelis subcapitata, Ma et al (2006) found that photosynthesis was the most sensitive process, and atrazine was among the most toxic herbicides tested. Triazinic compounds such as atrazine, simazine, propazine, as well their metabolites, mainly 2-hydroxyatrazine, diaminochlorotriazine, deethylatrazine and deisopropylatrazine, were shown to induce mammary gland tumors in Sprague-Dawley (SD) female rats (Stevens et al, 1994).…”

Section: Atrazinementioning

confidence: 99%

New aspects on atrazine biodegradation

Sene

Converti

Secchi

et al. 2010

Braz. arch. biol. technol.

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“…), beldroega (Portulaca oleracea L.), entre outras, durante um período de até cinco meses (Hertwig, 1977;Gelmini, 1991;Khouri, 2007;Colla et al, 2008). Os impactos da sua presença na água e seus efeitos ecotoxicológicos já são bastante conhecidos (Hayes et al, 2002;Christin et al, 2004;Weiner et al, 2004;Ma et al, 2006;Murphy et al, 2006).…”

Section: Introductionunclassified

Associação de Rhizobium sp. a duas leguminosas na tolerância à atrazina

2011

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Association of Rhizobium sp. with two legumes on atrazine toleranceThe association of bacteria with plants has been studied as a possible emerging technology for phytoremediation of contaminants, including herbicides, which pose as a threatening to environmental quality due to their recalcitrance. The aim of this study was to assess the tolerance of dwarf mucuna (Stizolobium deeringianum Bort) and black mucuna (Stizolobium aterrimum Piper & Tracy) inoculated and uninoculated with Rhizobium to the herbicide atrazine. The treatments were: plants with inoculant + 0.1 g/m 2 , 0.2 g/m 2 atrazine, and without atrazine (T1, T2 and T3, respectively), plants without inoculant + 0.1 g/m 2 , 0.2 g/m 2 atrazine and without atrazine (T4, T5 and T6, respectively). The experiment was arranged in a completely randomized design, with three replications. Plants were grown in a

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Toxicity assessment of 40 herbicides to the green alga Raphidocelis subcapitata

Cited by 126 publications

References 24 publications

Assessment of the potential toxicity of herbicides and their degradation products to nontarget cells using two microorganisms, the bacteria Vibrio fischeri and the ciliate Tetrahymena pyriformis

Assessment of the potential toxicity of herbicides and their degradation products to nontarget cells using two microorganisms, the bacteria Vibrio fischeri and the ciliate Tetrahymena pyriformis

New aspects on atrazine biodegradation

Associação de Rhizobium sp. a duas leguminosas na tolerância à atrazina

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