Genetic and physiological responses of three freshwater diatoms to realistic diuron exposures

Moisset, Sophie; Tiam, Sandra Kim; Feurtet‐Mazel, Agnès; Morin, Soizic; Delmas, François; Mazzella, Nicolás; Gonzalez, Patrice

doi:10.1007/s11356-014-3523-2

Cited by 39 publications

(22 citation statements)

References 31 publications

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“…Diatoms are commonly used as indicators of various environmental characteristics, especially salinity, pH, and nutrients (Smol and Stoermer, 2010). Diatoms are also known to be sensitive to toxic substances, such as metals (Cattaneo et al, 2008, Duong et al, 2008Morin et al, 2012) and organic contaminants (Moisset et al, 2015). Classic toxicological approaches, such as testing the effects of contaminants on single species or monoclonal cultures in the laboratory conditions demonstrated effects of individual contaminants and of their mixtures on both freshwater (e.g., Adams and Stauber, 2004;Araujo et al, 2010;Larras et al, 2012,) and marine (e.g., Fan and Reinfelder, 2003;Hagenbuch and Pinkney, 2012;Joux-Arab et al, 2000;Moreno-Garrido et al, 2003, 2007 diatoms.…”

Section: Introductionmentioning

confidence: 99%

“…Classic toxicological approaches, such as testing the effects of contaminants on single species or monoclonal cultures in the laboratory conditions demonstrated effects of individual contaminants and of their mixtures on both freshwater (e.g., Adams and Stauber, 2004;Araujo et al, 2010;Larras et al, 2012,) and marine (e.g., Fan and Reinfelder, 2003;Hagenbuch and Pinkney, 2012;Joux-Arab et al, 2000;Moreno-Garrido et al, 2003, 2007 diatoms. While the traditional tests typically measured growth or survival rates of various species depending on the dosage and length of the exposure to contaminants, a number of recent studies attempted to investigate mechanisms of toxicity by estimating gene expression (Kim Tiam et al, 2012;Moisset et al, 2015) and enzyme activities indicating which cell functions are affected Crespo et al, 2013). Laboratory and field experiments were also crucial for investigating effects of contaminants on the composition (Morin et al, 2010;Ricart et al, 2010) and diversity (Ricciardi et al, 2009) of algal communities and the function of the river biofilm ecosystems (Barral-Fraga et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Potential effects of sediment contaminants on diatom assemblages in coastal lagoons of New Jersey and New York States

Potapova

Desianti

Enache

2016

Marine Pollution Bulletin

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Sediment samples from the coastal lagoons and estuaries of New York and New Jersey were used to investigate the influence of contaminants on diatom assemblages. Multivariate analyses demonstrated correspondence between composition of diatom assemblages and concentrations of several metals and total PAH. The effects of the individual contaminants were difficult to disentangle because of the considerable correlations between their concentrations. The most conspicuous trend was the increase in the relative abundance of small centric planktonic diatoms in response to contamination and the corresponding decrease in the benthic flora. The high relative abundance of planktonic species on contaminated sediments apparently resulted not so much from their tolerance to pollution, but from the paucity of benthic species. A comparison of the assemblages on the surface and at the depth of approximately 8-10cm revealed a statistically significant temporal change in community composition towards planktonic diatoms.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potential effects of sediment contaminants on diatom assemblages in coastal lagoons of New Jersey and New York States

Potapova

Desianti

Enache

2016

Marine Pollution Bulletin

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“…According to the European Organisation for Economic Co-operation and Development (OECD), we tested 11 chemicals on D. subspicatus and N. pelliculosa as they are suitable for the testing of chemicals in growth inhibition test (Anonymous, 2011). We also included the widespread freshwater diatom N. palea (Larras et al, 2013;Abdullin and Bagmet, 2015;Moisset et al, 2015). The strain SAG 86.81 of D. subspicatus was obtained from the Culture Collection of Algae at Göttingen University.…”

Section: Microalgae Culturesmentioning

confidence: 99%

Effects of herbicide mixtures on freshwater microalgae with the potential effect of a safener

Chamsi

Pinelli

Faucon

et al. 2019

Ann. Limnol. - Int. J. Lim.

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Freshwater microalgae are primary producers and cosmopolitan species subjected to the effects of herbicides. In this work, the in vitro algal growth inhibitory effects of 11 agrochemicals (9 herbicides, 1 metabolite, and 1 safener) were quantified. Chemical compounds were applied singly and in specific mixtures. Three species were used in axenic condition: the green alga Desmodesmus subspicatus (Chodat), the diatoms Nitzschia palea (Kützing) W. Smith and Navicula pelliculosa (Kützing) Hilse. When exposed to single compounds, N. palea and N. pelliculosa were only sensitive to atrazine/desethylatrazine and the safener benoxacor (BE), respectively. D. subspicatus was equally sensitive to four herbicides including atrazine and its metabolite and significantly more sensitive to iodosulfuron-methyl-sodium (IODO). The mixture of these five compounds induced a significantly higher growth inhibition of about 1.5-fold than IODO alone, which could be attributed to the four other herbicides. The mixture of all compounds was twofold less toxic than IODO on D. subspicatus. A halogen atom is present in IODO as in the herbicides to which the safener BE À known to induce glutathione-S-transferases À is associated in agrochemical preparations. We then showed that IODO was less toxic when combined with non-toxic concentrations of BE. These results indicated that the toxicity of the most active herbicide studied was decreased by a non-herbicide compound present in agrochemical formulations of other herbicides. These results suggest the importance to take into account the chemistry and the mechanisms of action for each compound in a risk assessment approach of a complex mixture.

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“…The stria density ranges from 32-47/10 µm [14]. N. palea has been described as relatively tolerant to metals [6,15] and to pesticides [16][17][18]. This taxon is considered to be one of the most pollution tolerant species.…”

Section: Algal Culturesmentioning

confidence: 99%

Diatom Deformities and Tolerance to Cadmium Contamination in Four Species

et al. 2019

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The relative tolerance of four diatoms (Nitzschia palea, Pinnularia mesolepta, Mayamaea atomus, and Gomphonema truncatum) to Cd was evaluated, including their proneness to deformities, and the severity of the abnormalities in relation to Cd concentration. The indirect effect of Cd on photosynthetic capacities was assessed during a short time exposure experiment using a dose-response approach to evaluate the relative tolerance of the four diatom species. The EC25 were 9 (3, 23), 606 (348, 926), 1179 (1015, 1349) and 2394 (1890, 2896) µg/L for P. mesolepta, G. truncatum, N. palea, and M. atomus respectively. P. mesolepta was by far the most Cd sensitive species while M. atomus was the most tolerant. In addition, diatoms were exposed to a single concentration of Cd comparable to a heavily contaminated environment for a longer duration to evaluate the effect of Cd on growth kinetics and the deformities induced. N. palea, P. mesolepta, and M. atomus were able to grow when cultivated with Cd while G. truncatum was not. Cadmium strongly affected the effective quantum yield in G. truncatum (4.8 ± 5.9% of the control) and P. mesolepta cultures (29.2 ± 6.9% of the control). The effects were moderate for N. palea (88.3 ± 0.7% of the control) and no impact was observed for M. atomus. The results from the two approaches were in accordance since they identified N. palea and M. atomus as the two most tolerant species to Cd, while P. mesolepta and G. truncatum were the most sensitive. The microscopy analyses revealed that P. mesolepta was more impacted by Cd than N. palea and M. atomus considering both the quantity of abnormal cells and the severity of the deformities. Overall, this research shows that not all deformities can be considered equal for a water quality bio-assessment. The work highlights a need to take into account metal-tolerance/sensitivity of the species and the severity of the deformities.

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Genetic and physiological responses of three freshwater diatoms to realistic diuron exposures

Cited by 39 publications

References 31 publications

Potential effects of sediment contaminants on diatom assemblages in coastal lagoons of New Jersey and New York States

Potential effects of sediment contaminants on diatom assemblages in coastal lagoons of New Jersey and New York States

Effects of herbicide mixtures on freshwater microalgae with the potential effect of a safener

Diatom Deformities and Tolerance to Cadmium Contamination in Four Species

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