Molecular impact of propiconazole on Daphnia magna using a reproduction-related cDNA array

Soetaert, Anneleen; Moens, Lotte; Ven, Karlijn van der; Leemput, Koen Van; Naudts, Bart; Blust, Ronny; Coen, Wim M. De

doi:10.1016/j.cbpc.2005.10.009

Cited by 69 publications

(52 citation statements)

References 42 publications

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“…Three D. magna cDNA libraries enriched with genes related to energy metabolism, molting and life stage specific processes have been developed by Soetaert et al (2006Soetaert et al ( , 2007 using the suppression subtractive hybridization technique. Next to these cDNA libraries, four extra cDNA fragments, corresponding to expressed sequence tags (ESTs) from genes that were expected to be responsive to Zn were spotted on the array.…”

Section: Microarraysmentioning

confidence: 99%

Gene transcription profiles, global DNA methylation and potential transgenerational epigenetic effects related to Zn exposure history in Daphnia magna

Vandegehuchte

Coninck

Vandenbrouck

et al. 2010

Environmental Pollution

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Zn-induced DNA hypomethylation is related to gene transcription in Daphnia magna and Zn exposure potentially induced limited temporary transgenerational effects on gene transcription. a r t i c l e i n f o a b s t r a c tA reduced level of DNA methylation has recently been described in both Zn-exposed and non-exposed offspring of Daphnia magna exposed to Zn. The hypothesis examined in this study is that DNA hypomethylation has an effect on gene transcription. A second hypothesis is that accumulative epigenetic effects can affect gene transcription in non-exposed offspring from parents with an exposure history of more than one generation. Transcriptional gene regulation was studied with a cDNA microarray. In the exposed and non-exposed hypomethylated daphnids, a large proportion of common genes were similarly up-or down-regulated, indicating a possible effect of the DNA hypomethylation. Two of these genes can be mechanistically involved in DNA methylation reduction. The similar transcriptional regulation of two and three genes in the F 0 and F 1 exposed daphnids on one hand and their non-exposed offspring on the other hand, could be the result of a one-generation temporary transgenerational epigenetic effect, which was not accumulative.

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Section: Microarraysmentioning

confidence: 99%

Gene transcription profiles, global DNA methylation and potential transgenerational epigenetic effects related to Zn exposure history in Daphnia magna

Vandegehuchte

Coninck

Vandenbrouck

et al. 2010

Environmental Pollution

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“…Recently, Daphnia has been recognized as a new genetic model system. As a result, the scope of Daphnia research has expanded to include gene expression, mapping, and comparative genomic studies (e.g., Watanabe et al 2005;Cristescu et al 2006;Omilian et al 2006;Soetaert et al 2006). Yet, comparatively little is known about daphniid population genetics at nuclear protein-coding loci.…”

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confidence: 99%

Patterns of Intraspecific DNA Variation in the Daphnia Nuclear Genome

Omilian

Lynch

2009

Genetics

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Understanding nucleotide variation in natural populations has been a subject of great interest for decades. However, many taxonomic groups, especially those with atypical life history attributes remain unstudied, and Drosophila is the only arthropod genus for which DNA polymorphism data are presently abundant. As a result of the recent release of the complete genome sequence and a wide variety of new genomic resources, the Daphnia system is quickly becoming a promising new avenue for expanding our knowledge of nucleotide variation in natural populations. Here, we examine nucleotide variation in six protein-coding loci for Daphnia pulex and its congeners with particular emphasis on D. pulicaria, the closest extant relative of D. pulex. Levels of synonymous intraspecific variation, p s , averaged 0.0136 for species in the Daphnia genus, and are slightly lower than most prior estimates in invertebrates. Tests of neutrality indicated that segregating variation conforms to neutral model expectations for the loci that we examined in most species, while K a /K s ratios revealed strong purifying selection. Using a full maximum-likelihood coalescent-based method, the ratio of the recombination rate to the mutation rate (c/u), averaged 0.5255 for species of the Daphnia genus. Lastly, a divergence population-genetics approach was used to investigate gene flow and divergence between D. pulex and D. pulicaria.

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“…Propiconazole is one of the best characterized chemicals interfering with the embryonic development of D. magna, although up to now only acute toxicities of the chemical itself are reported (Soetaert et al, 2006;Wegen, 1991). Since in the present research propiconazole was combined with IPBC and no chemical analyses on the leachates were performed no exact toxicity values can be calculated for propiconazole.…”

Section: Discussionmentioning

confidence: 99%

Potential contribution of organosilicon compounds to reduced leaching of biocides in wood protection

et al. 2009

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Abstract• Leaching of biocide treated wood leads to reduced effectiveness and potential threat to the environment.• Therefore the effectiveness of organosilicons as protective systems of biocides was evaluated. Scots pine sapwood specimens were impregnated with solely organosilicons and biocides as well as with combinations of both.• The biocides 3-iodo-2-propynylbutylcarbamate, propiconazole and 3-(trimethoxysilyl)propyldimethyloctadecyl ammonium chloride confirmed their effectiveness regardless the addition of an organosilicon. Low leachate toxicities to the crustacean Daphnia magna were found for the organosilicons, whereas significant leachate toxicities were measured for the biocides. Combining both did not considerably diminish the leachate toxicities.• It must therefore be concluded that under the circumstances as described in this article, organosilicons do not interfere with the efficacy of the biocides, but they do not contribute to a reduced leaching of the biocides either. Mots-clés :biocide / durabilité / écotoxicologie / organosilicone / protection du bois Résumé -Contribution potentielle des composes à base d'organosilicone pour réduire le lessivage de biocides dans le domaine de la protection du bois.• Le lessivage de bois traité avec des biocides conduit à une perte d'efficacité du traitement et à une menace pour l'environnement.• Nous avons donc évalué l'efficacité des organosilicones en tant que systèmes de protection des biocides. Des échantillons d'aubier de pin sylvestre ont été imprégnés selon trois modalités (i) avec uniquement des organosilicones, (ii) avec des biocides et (iii) avec une combinaison des deux.• Les biocides 3-iodo-2-propynylbutylcarbamate, propiconazole et 3-(trimethoxysilyl) propyldimethyloctadecyl chlorure d'ammonium ont confirmé leur efficacité quelle que soit l'organosilicone ajouté. Pour les traitements à base d'organosilicone, nous avons trouvé une faible toxicité des lixiviats (pour Daphnia magna) et une toxicité significative dans le cas des biocides seuls.• On peut conclure que dans les conditions expérimentales présentées les organosilicones n'interfèrent pas avec l'efficacité des biocides mais ils ne contribuent pas à une réduction de la lixiviation des biocides.

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Molecular impact of propiconazole on Daphnia magna using a reproduction-related cDNA array

Cited by 69 publications

References 42 publications

Gene transcription profiles, global DNA methylation and potential transgenerational epigenetic effects related to Zn exposure history in Daphnia magna

Gene transcription profiles, global DNA methylation and potential transgenerational epigenetic effects related to Zn exposure history in Daphnia magna

Patterns of Intraspecific DNA Variation in the Daphnia Nuclear Genome

Potential contribution of organosilicon compounds to reduced leaching of biocides in wood protection

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