Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt
Road salt is extensively used as a deicing chemical in road maintenance during winter and has in certain areas of the world led to density stratifications in lakes and ponds, and adversely impacted aquatic organisms in the recipients of the road run-off. Aquatic vertebrates such as fish have been pa...
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Online Access: | http://hdl.handle.net/11250/2579365 https://doi.org/10.1016/j.aquatox.2015.10.003 |
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ftnorskinstvf:oai:niva.brage.unit.no:11250/2579365 2023-05-15T15:31:49+02:00 Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt Tollefsen, Knut Erik Song, You Kleiven, Merethe Mahrosh, Urma Meland, Sondre Rosseland, Bjørn Olav Teien, Hans-Christian 2015 application/pdf application/vnd.ms-excel http://hdl.handle.net/11250/2579365 https://doi.org/10.1016/j.aquatox.2015.10.003 eng eng Elsevier Norges forskningsråd: 160016 Norges forskningsråd: 223268 Statens Vegvesen: NORWAT Aquatic Toxicology. 2015, 169, 58-68. urn:issn:0166-445X http://hdl.handle.net/11250/2579365 https://doi.org/10.1016/j.aquatox.2015.10.003 cristin:1298844 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 58-68 169 Aquatic Toxicology Journal article Peer reviewed 2015 ftnorskinstvf https://doi.org/10.1016/j.aquatox.2015.10.003 2023-02-21T08:45:44Z Road salt is extensively used as a deicing chemical in road maintenance during winter and has in certain areas of the world led to density stratifications in lakes and ponds, and adversely impacted aquatic organisms in the recipients of the road run-off. Aquatic vertebrates such as fish have been particularly sensitive during fertilisation, as the fertilisation of eggs involves rapid uptake of the surrounding water, reduction in egg swelling and in ovo exposure to high road salt concentrations. The present study aimed to identify the persistent molecular changes occurring in Atlantic salmon (Salmo salar) eggs after 24 h exposure to high concentrations (5000 mg/L) of road salt at fertilisation. The global transcriptional changes were monitored by a 60 k salmonid microarray at the eyed egg stage (cleavage stage, 255 degree days after fertilisation) and identified a high number of transcripts being differentially regulated. Functional enrichment, pathway and gene–gene interaction analysis identified that the differentially expressed genes (DEGs) were mainly associated with toxiciologically relevant processes involved in osmoregulation, ionregulation, oxidative stress, metabolism (energy turnover), renal function and developmental in the embryos. Quantitative rtPCR analysis of selected biomarkers, identified by global transcriptomics, were monitored in the eggs for an extended range of road salt concentrations (0, 50, 100, 500 and 5000 mg/L) and revealed a positive concentration-dependent increase in cypa14, a gene involved in lipid turnover and renal function, and nav1, a gene involved in neuraxonal development. Biomarkers for osmoregulatory responses such as atp1a2, the gene encoding the main sodium/potassium ATP-fueled transporter for chloride ions, and txdc9, a gene involved in regulation of cell redox homeostasis (oxidative stress), displayed apparent concentration-dependency with exposure, although large variance in the control group precluded robust statistical discrimination between the groups. A No ... Article in Journal/Newspaper Atlantic salmon Salmo salar Norwegian Institute for Water research: NIVA Open Access Archive (Brage) Aquatic Toxicology 169 58 68 |
institution |
Open Polar |
collection |
Norwegian Institute for Water research: NIVA Open Access Archive (Brage) |
op_collection_id |
ftnorskinstvf |
language |
English |
description |
Road salt is extensively used as a deicing chemical in road maintenance during winter and has in certain areas of the world led to density stratifications in lakes and ponds, and adversely impacted aquatic organisms in the recipients of the road run-off. Aquatic vertebrates such as fish have been particularly sensitive during fertilisation, as the fertilisation of eggs involves rapid uptake of the surrounding water, reduction in egg swelling and in ovo exposure to high road salt concentrations. The present study aimed to identify the persistent molecular changes occurring in Atlantic salmon (Salmo salar) eggs after 24 h exposure to high concentrations (5000 mg/L) of road salt at fertilisation. The global transcriptional changes were monitored by a 60 k salmonid microarray at the eyed egg stage (cleavage stage, 255 degree days after fertilisation) and identified a high number of transcripts being differentially regulated. Functional enrichment, pathway and gene–gene interaction analysis identified that the differentially expressed genes (DEGs) were mainly associated with toxiciologically relevant processes involved in osmoregulation, ionregulation, oxidative stress, metabolism (energy turnover), renal function and developmental in the embryos. Quantitative rtPCR analysis of selected biomarkers, identified by global transcriptomics, were monitored in the eggs for an extended range of road salt concentrations (0, 50, 100, 500 and 5000 mg/L) and revealed a positive concentration-dependent increase in cypa14, a gene involved in lipid turnover and renal function, and nav1, a gene involved in neuraxonal development. Biomarkers for osmoregulatory responses such as atp1a2, the gene encoding the main sodium/potassium ATP-fueled transporter for chloride ions, and txdc9, a gene involved in regulation of cell redox homeostasis (oxidative stress), displayed apparent concentration-dependency with exposure, although large variance in the control group precluded robust statistical discrimination between the groups. A No ... |
format |
Article in Journal/Newspaper |
author |
Tollefsen, Knut Erik Song, You Kleiven, Merethe Mahrosh, Urma Meland, Sondre Rosseland, Bjørn Olav Teien, Hans-Christian |
spellingShingle |
Tollefsen, Knut Erik Song, You Kleiven, Merethe Mahrosh, Urma Meland, Sondre Rosseland, Bjørn Olav Teien, Hans-Christian Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt |
author_facet |
Tollefsen, Knut Erik Song, You Kleiven, Merethe Mahrosh, Urma Meland, Sondre Rosseland, Bjørn Olav Teien, Hans-Christian |
author_sort |
Tollefsen, Knut Erik |
title |
Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt |
title_short |
Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt |
title_full |
Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt |
title_fullStr |
Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt |
title_full_unstemmed |
Transcriptional changes in Atlantic salmon (Salmo salar) after embryonic exposure to road salt |
title_sort |
transcriptional changes in atlantic salmon (salmo salar) after embryonic exposure to road salt |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://hdl.handle.net/11250/2579365 https://doi.org/10.1016/j.aquatox.2015.10.003 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
58-68 169 Aquatic Toxicology |
op_relation |
Norges forskningsråd: 160016 Norges forskningsråd: 223268 Statens Vegvesen: NORWAT Aquatic Toxicology. 2015, 169, 58-68. urn:issn:0166-445X http://hdl.handle.net/11250/2579365 https://doi.org/10.1016/j.aquatox.2015.10.003 cristin:1298844 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.aquatox.2015.10.003 |
container_title |
Aquatic Toxicology |
container_volume |
169 |
container_start_page |
58 |
op_container_end_page |
68 |
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1766362331843919872 |