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Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution

Seagrasses are marine angiosperms that live fully submerged in the sea. They evolved from land plant ancestors, with multiple species representing at least three independent return-to-the-sea events. This raises the question of whether these marine angiosperms followed the same adaptation pathway to...

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Autores principales: Lee, HueyTyng, Golicz, Agnieszka A, Bayer, Philipp E, Severn-Ellis, Anita A, Chan, Chon-Kit Kenneth, Batley, Jacqueline, Kendrick, Gary A, Edwards, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6022596/
https://www.ncbi.nlm.nih.gov/pubmed/29912443
http://dx.doi.org/10.1093/jxb/ery147
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author Lee, HueyTyng
Golicz, Agnieszka A
Bayer, Philipp E
Severn-Ellis, Anita A
Chan, Chon-Kit Kenneth
Batley, Jacqueline
Kendrick, Gary A
Edwards, David
author_facet Lee, HueyTyng
Golicz, Agnieszka A
Bayer, Philipp E
Severn-Ellis, Anita A
Chan, Chon-Kit Kenneth
Batley, Jacqueline
Kendrick, Gary A
Edwards, David
author_sort Lee, HueyTyng
collection PubMed
description Seagrasses are marine angiosperms that live fully submerged in the sea. They evolved from land plant ancestors, with multiple species representing at least three independent return-to-the-sea events. This raises the question of whether these marine angiosperms followed the same adaptation pathway to allow them to live and reproduce under the hostile marine conditions. To compare the basis of marine adaptation between seagrass lineages, we generated genomic data for Halophila ovalis and compared this with recently published genomes for two members of Zosteraceae, as well as genomes of five non-marine plant species (Arabidopsis, Oryza sativa, Phoenix dactylifera, Musa acuminata, and Spirodela polyrhiza). Halophila and Zosteraceae represent two independent seagrass lineages separated by around 30 million years. Genes that were lost or conserved in both lineages were identified. All three species lost genes associated with ethylene and terpenoid biosynthesis, and retained genes related to salinity adaptation, such as those for osmoregulation. In contrast, the loss of the NADH dehydrogenase-like complex is unique to H. ovalis. Through comparison of two independent return-to-the-sea events, this study further describes marine adaptation characteristics common to seagrass families, identifies species-specific gene loss, and provides molecular evidence for convergent evolution in seagrass lineages.
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spelling pubmed-60225962018-07-10 Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution Lee, HueyTyng Golicz, Agnieszka A Bayer, Philipp E Severn-Ellis, Anita A Chan, Chon-Kit Kenneth Batley, Jacqueline Kendrick, Gary A Edwards, David J Exp Bot Research Papers Seagrasses are marine angiosperms that live fully submerged in the sea. They evolved from land plant ancestors, with multiple species representing at least three independent return-to-the-sea events. This raises the question of whether these marine angiosperms followed the same adaptation pathway to allow them to live and reproduce under the hostile marine conditions. To compare the basis of marine adaptation between seagrass lineages, we generated genomic data for Halophila ovalis and compared this with recently published genomes for two members of Zosteraceae, as well as genomes of five non-marine plant species (Arabidopsis, Oryza sativa, Phoenix dactylifera, Musa acuminata, and Spirodela polyrhiza). Halophila and Zosteraceae represent two independent seagrass lineages separated by around 30 million years. Genes that were lost or conserved in both lineages were identified. All three species lost genes associated with ethylene and terpenoid biosynthesis, and retained genes related to salinity adaptation, such as those for osmoregulation. In contrast, the loss of the NADH dehydrogenase-like complex is unique to H. ovalis. Through comparison of two independent return-to-the-sea events, this study further describes marine adaptation characteristics common to seagrass families, identifies species-specific gene loss, and provides molecular evidence for convergent evolution in seagrass lineages. Oxford University Press 2018-07-10 2018-04-18 /pmc/articles/PMC6022596/ /pubmed/29912443 http://dx.doi.org/10.1093/jxb/ery147 Text en © The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Papers
Lee, HueyTyng
Golicz, Agnieszka A
Bayer, Philipp E
Severn-Ellis, Anita A
Chan, Chon-Kit Kenneth
Batley, Jacqueline
Kendrick, Gary A
Edwards, David
Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution
title Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution
title_full Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution
title_fullStr Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution
title_full_unstemmed Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution
title_short Genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution
title_sort genomic comparison of two independent seagrass lineages reveals habitat-driven convergent evolution
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6022596/
https://www.ncbi.nlm.nih.gov/pubmed/29912443
http://dx.doi.org/10.1093/jxb/ery147
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