Patterns of miRNA expression in Arctic charr development.
Micro-RNAs (miRNAs) are now recognized as a major class of developmental regulators. Sequences of many miRNAs are highly conserved, yet they often exhibit temporal and spatial heterogeneity in expression among species and have been proposed as an important reservoir for adaptive evolution and diverg...
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ftdoajarticles:oai:doaj.org/article:c7cae64d067246d09e22f8cf1f69f1f3 2023-05-15T14:30:02+02:00 Patterns of miRNA expression in Arctic charr development. Kalina H Kapralova Sigrídur Rut Franzdóttir Hákon Jónsson Sigurður S Snorrason Zophonías O Jónsson 2014-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0106084 https://doaj.org/article/c7cae64d067246d09e22f8cf1f69f1f3 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4149506?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0106084 https://doaj.org/article/c7cae64d067246d09e22f8cf1f69f1f3 PLoS ONE, Vol 9, Iss 8, p e106084 (2014) Medicine R Science Q article 2014 ftdoajarticles https://doi.org/10.1371/journal.pone.0106084 2022-12-31T13:24:40Z Micro-RNAs (miRNAs) are now recognized as a major class of developmental regulators. Sequences of many miRNAs are highly conserved, yet they often exhibit temporal and spatial heterogeneity in expression among species and have been proposed as an important reservoir for adaptive evolution and divergence. With this in mind we studied miRNA expression during embryonic development of offspring from two contrasting morphs of the highly polymorphic salmonid Arctic charr (Salvelinus alpinus), a small benthic morph from Lake Thingvallavatn (SB) and an aquaculture stock (AC). These morphs differ extensively in morphology and adult body size. We established offspring groups of the two morphs and sampled at several time points during development. Four time points (3 embryonic and one just before first feeding) were selected for high-throughput small-RNA sequencing. We identified a total of 326 conserved and 427 novel miRNA candidates in Arctic charr, of which 51 conserved and 6 novel miRNA candidates were differentially expressed among developmental stages. Furthermore, 53 known and 19 novel miRNAs showed significantly different levels of expression in the two contrasting morphs. Hierarchical clustering of the 53 conserved miRNAs revealed that the expression differences are confined to the embryonic stages, where miRNAs such as sal-miR-130, 30, 451, 133, 26 and 199a were highly expressed in AC, whereas sal-miR-146, 183, 206 and 196a were highly expressed in SB embryos. The majority of these miRNAs have previously been found to be involved in key developmental processes in other species such as development of brain and sensory epithelia, skeletogenesis and myogenesis. Four of the novel miRNA candidates were only detected in either AC or SB. miRNA candidates identified in this study will be combined with available mRNA expression data to identify potential targets and involvement in developmental regulation. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Directory of Open Access Journals: DOAJ Articles Arctic PLoS ONE 9 8 e106084 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Kalina H Kapralova Sigrídur Rut Franzdóttir Hákon Jónsson Sigurður S Snorrason Zophonías O Jónsson Patterns of miRNA expression in Arctic charr development. |
topic_facet |
Medicine R Science Q |
description |
Micro-RNAs (miRNAs) are now recognized as a major class of developmental regulators. Sequences of many miRNAs are highly conserved, yet they often exhibit temporal and spatial heterogeneity in expression among species and have been proposed as an important reservoir for adaptive evolution and divergence. With this in mind we studied miRNA expression during embryonic development of offspring from two contrasting morphs of the highly polymorphic salmonid Arctic charr (Salvelinus alpinus), a small benthic morph from Lake Thingvallavatn (SB) and an aquaculture stock (AC). These morphs differ extensively in morphology and adult body size. We established offspring groups of the two morphs and sampled at several time points during development. Four time points (3 embryonic and one just before first feeding) were selected for high-throughput small-RNA sequencing. We identified a total of 326 conserved and 427 novel miRNA candidates in Arctic charr, of which 51 conserved and 6 novel miRNA candidates were differentially expressed among developmental stages. Furthermore, 53 known and 19 novel miRNAs showed significantly different levels of expression in the two contrasting morphs. Hierarchical clustering of the 53 conserved miRNAs revealed that the expression differences are confined to the embryonic stages, where miRNAs such as sal-miR-130, 30, 451, 133, 26 and 199a were highly expressed in AC, whereas sal-miR-146, 183, 206 and 196a were highly expressed in SB embryos. The majority of these miRNAs have previously been found to be involved in key developmental processes in other species such as development of brain and sensory epithelia, skeletogenesis and myogenesis. Four of the novel miRNA candidates were only detected in either AC or SB. miRNA candidates identified in this study will be combined with available mRNA expression data to identify potential targets and involvement in developmental regulation. |
format |
Article in Journal/Newspaper |
author |
Kalina H Kapralova Sigrídur Rut Franzdóttir Hákon Jónsson Sigurður S Snorrason Zophonías O Jónsson |
author_facet |
Kalina H Kapralova Sigrídur Rut Franzdóttir Hákon Jónsson Sigurður S Snorrason Zophonías O Jónsson |
author_sort |
Kalina H Kapralova |
title |
Patterns of miRNA expression in Arctic charr development. |
title_short |
Patterns of miRNA expression in Arctic charr development. |
title_full |
Patterns of miRNA expression in Arctic charr development. |
title_fullStr |
Patterns of miRNA expression in Arctic charr development. |
title_full_unstemmed |
Patterns of miRNA expression in Arctic charr development. |
title_sort |
patterns of mirna expression in arctic charr development. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://doi.org/10.1371/journal.pone.0106084 https://doaj.org/article/c7cae64d067246d09e22f8cf1f69f1f3 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
PLoS ONE, Vol 9, Iss 8, p e106084 (2014) |
op_relation |
http://europepmc.org/articles/PMC4149506?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0106084 https://doaj.org/article/c7cae64d067246d09e22f8cf1f69f1f3 |
op_doi |
https://doi.org/10.1371/journal.pone.0106084 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
8 |
container_start_page |
e106084 |
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