Antarctic blackfin icefish genome reveals adaptations to extreme environments
Icefishes (suborder Notothenioidei; family Channichthyidae) are the only vertebrates that lack functional haemoglobin genes and red blood cells. Here, we report a high-quality genome assembly and linkage map for the Antarctic blackfin icefish Chaenocephalus aceratus, highlighting evolved genomic fea...
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ftpubmed:oai:pubmedcentral.nih.gov:7307600 2023-05-15T13:56:31+02:00 Antarctic blackfin icefish genome reveals adaptations to extreme environments Kim, Bo-Mi Amores, Angel Kang, Seunghyun Ahn, Do-Hwan Kim, Jin-Hyoung Kim, Il-Chan Lee, Jun Hyuck Lee, Sung Gu Lee, Hyoungseok Lee, Jungeun Kim, Han-Woo Desvignes, Thomas Batzel, Peter Sydes, Jason Titus, Tom Wilson, Catherine A. Catchen, Julian M. Warren, Wesley C. Schartl, Manfred Detrich, H. William Postlethwait, John H. Park, Hyun 2019-02-25 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7307600/ http://www.ncbi.nlm.nih.gov/pubmed/30804520 https://doi.org/10.1038/s41559-019-0812-7 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7307600/ http://www.ncbi.nlm.nih.gov/pubmed/30804520 http://dx.doi.org/10.1038/s41559-019-0812-7 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Nat Ecol Evol Article Text 2019 ftpubmed https://doi.org/10.1038/s41559-019-0812-7 2020-06-28T00:30:43Z Icefishes (suborder Notothenioidei; family Channichthyidae) are the only vertebrates that lack functional haemoglobin genes and red blood cells. Here, we report a high-quality genome assembly and linkage map for the Antarctic blackfin icefish Chaenocephalus aceratus, highlighting evolved genomic features for its unique physiology. Phylogenomic analysis revealed that Antarctic fish of the teleost suborder Notothenioidei, including icefishes, diverged from the stickleback lineage about 77 million years ago and subsequently evolved cold-adapted phenotypes as the Southern Ocean cooled to sub-zero temperatures. Our results show that genes involved in protection from ice damage, including genes encoding antifreeze glycoprotein and zona pellucida proteins, are highly expanded in the icefish genome. Furthermore, genes that encode enzymes that help to control cellular redox state, including members of the sod3 and nqo1 gene families, are expanded, probably as evolutionary adaptations to the relatively high concentration of oxygen dissolved in cold Antarctic waters. In contrast, some crucial regulators of circadian homeostasis (cry and per genes) are absent from the icefish genome, suggesting compromised control of biological rhythms in the polar light environment. The availability of the icefish genome sequence will accelerate our understanding of adaptation to extreme Antarctic environments. Text Antarc* Antarctic Icefish Southern Ocean PubMed Central (PMC) Antarctic Southern Ocean The Antarctic Nature Ecology & Evolution 3 3 469 478 |
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Article Kim, Bo-Mi Amores, Angel Kang, Seunghyun Ahn, Do-Hwan Kim, Jin-Hyoung Kim, Il-Chan Lee, Jun Hyuck Lee, Sung Gu Lee, Hyoungseok Lee, Jungeun Kim, Han-Woo Desvignes, Thomas Batzel, Peter Sydes, Jason Titus, Tom Wilson, Catherine A. Catchen, Julian M. Warren, Wesley C. Schartl, Manfred Detrich, H. William Postlethwait, John H. Park, Hyun Antarctic blackfin icefish genome reveals adaptations to extreme environments |
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Article |
description |
Icefishes (suborder Notothenioidei; family Channichthyidae) are the only vertebrates that lack functional haemoglobin genes and red blood cells. Here, we report a high-quality genome assembly and linkage map for the Antarctic blackfin icefish Chaenocephalus aceratus, highlighting evolved genomic features for its unique physiology. Phylogenomic analysis revealed that Antarctic fish of the teleost suborder Notothenioidei, including icefishes, diverged from the stickleback lineage about 77 million years ago and subsequently evolved cold-adapted phenotypes as the Southern Ocean cooled to sub-zero temperatures. Our results show that genes involved in protection from ice damage, including genes encoding antifreeze glycoprotein and zona pellucida proteins, are highly expanded in the icefish genome. Furthermore, genes that encode enzymes that help to control cellular redox state, including members of the sod3 and nqo1 gene families, are expanded, probably as evolutionary adaptations to the relatively high concentration of oxygen dissolved in cold Antarctic waters. In contrast, some crucial regulators of circadian homeostasis (cry and per genes) are absent from the icefish genome, suggesting compromised control of biological rhythms in the polar light environment. The availability of the icefish genome sequence will accelerate our understanding of adaptation to extreme Antarctic environments. |
format |
Text |
author |
Kim, Bo-Mi Amores, Angel Kang, Seunghyun Ahn, Do-Hwan Kim, Jin-Hyoung Kim, Il-Chan Lee, Jun Hyuck Lee, Sung Gu Lee, Hyoungseok Lee, Jungeun Kim, Han-Woo Desvignes, Thomas Batzel, Peter Sydes, Jason Titus, Tom Wilson, Catherine A. Catchen, Julian M. Warren, Wesley C. Schartl, Manfred Detrich, H. William Postlethwait, John H. Park, Hyun |
author_facet |
Kim, Bo-Mi Amores, Angel Kang, Seunghyun Ahn, Do-Hwan Kim, Jin-Hyoung Kim, Il-Chan Lee, Jun Hyuck Lee, Sung Gu Lee, Hyoungseok Lee, Jungeun Kim, Han-Woo Desvignes, Thomas Batzel, Peter Sydes, Jason Titus, Tom Wilson, Catherine A. Catchen, Julian M. Warren, Wesley C. Schartl, Manfred Detrich, H. William Postlethwait, John H. Park, Hyun |
author_sort |
Kim, Bo-Mi |
title |
Antarctic blackfin icefish genome reveals adaptations to extreme environments |
title_short |
Antarctic blackfin icefish genome reveals adaptations to extreme environments |
title_full |
Antarctic blackfin icefish genome reveals adaptations to extreme environments |
title_fullStr |
Antarctic blackfin icefish genome reveals adaptations to extreme environments |
title_full_unstemmed |
Antarctic blackfin icefish genome reveals adaptations to extreme environments |
title_sort |
antarctic blackfin icefish genome reveals adaptations to extreme environments |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7307600/ http://www.ncbi.nlm.nih.gov/pubmed/30804520 https://doi.org/10.1038/s41559-019-0812-7 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Icefish Southern Ocean |
genre_facet |
Antarc* Antarctic Icefish Southern Ocean |
op_source |
Nat Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7307600/ http://www.ncbi.nlm.nih.gov/pubmed/30804520 http://dx.doi.org/10.1038/s41559-019-0812-7 |
op_rights |
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41559-019-0812-7 |
container_title |
Nature Ecology & Evolution |
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3 |
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3 |
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469 |
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478 |
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1766264011475648512 |