Tracking marsupial evolution using archaic genomic retroposon insertions.

The Australasian and South American marsupial mammals, such as kangaroos and opossums, are the closest living relatives to placental mammals, having shared a common ancestor around 130 million years ago. The evolutionary relationships among the seven marsupial orders have, however, so far eluded res...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Maria A Nilsson, Gennady Churakov, Mirjam Sommer, Ngoc Van Tran, Anja Zemann, Jürgen Brosius, Jürgen Schmitz
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/a4640bea3aed442385fa6d37ad8e3bcb
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a4640bea3aed442385fa6d37ad8e3bcb
record_format	dspace
spelling	oai:doaj.org-article:a4640bea3aed442385fa6d37ad8e3bcb2021-11-25T05:33:36ZTracking marsupial evolution using archaic genomic retroposon insertions.1544-91731545-788510.1371/journal.pbio.1000436https://doaj.org/article/a4640bea3aed442385fa6d37ad8e3bcb2010-07-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20668664/?tool=EBIhttps://doaj.org/toc/1544-9173https://doaj.org/toc/1545-7885The Australasian and South American marsupial mammals, such as kangaroos and opossums, are the closest living relatives to placental mammals, having shared a common ancestor around 130 million years ago. The evolutionary relationships among the seven marsupial orders have, however, so far eluded resolution. In particular, the relationships between the four Australasian and three South American marsupial orders have been intensively debated since the South American order Microbiotheria was taxonomically moved into the group Australidelphia. Australidelphia is significantly supported by both molecular and morphological data and comprises the four Australasian marsupial orders and the South American order Microbiotheria, indicating a complex, ancient, biogeographic history of marsupials. However, the exact phylogenetic position of Microbiotheria within Australidelphia has yet to be resolved using either sequence or morphological data analysis. Here, we provide evidence from newly established and virtually homoplasy-free retroposon insertion markers for the basal relationships among marsupial orders. Fifty-three phylogenetically informative markers were retrieved after in silico and experimental screening of approximately 217,000 retroposon-containing loci from opossum and kangaroo. The four Australasian orders share a single origin with Microbiotheria as their closest sister group, supporting a clear divergence between South American and Australasian marsupials. In addition, the new data place the South American opossums (Didelphimorphia) as the first branch of the marsupial tree. The exhaustive computational and experimental evidence provides important insight into the evolution of retroposable elements in the marsupial genome. Placing the retroposon insertion pattern in a paleobiogeographic context indicates a single marsupial migration from South America to Australia. The now firmly established phylogeny can be used to determine the direction of genomic changes and morphological transitions within marsupials.Maria A NilssonGennady ChurakovMirjam SommerNgoc Van TranAnja ZemannJürgen BrosiusJürgen SchmitzPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Biology, Vol 8, Iss 7, p e1000436 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Maria A Nilsson Gennady Churakov Mirjam Sommer Ngoc Van Tran Anja Zemann Jürgen Brosius Jürgen Schmitz Tracking marsupial evolution using archaic genomic retroposon insertions.
description	The Australasian and South American marsupial mammals, such as kangaroos and opossums, are the closest living relatives to placental mammals, having shared a common ancestor around 130 million years ago. The evolutionary relationships among the seven marsupial orders have, however, so far eluded resolution. In particular, the relationships between the four Australasian and three South American marsupial orders have been intensively debated since the South American order Microbiotheria was taxonomically moved into the group Australidelphia. Australidelphia is significantly supported by both molecular and morphological data and comprises the four Australasian marsupial orders and the South American order Microbiotheria, indicating a complex, ancient, biogeographic history of marsupials. However, the exact phylogenetic position of Microbiotheria within Australidelphia has yet to be resolved using either sequence or morphological data analysis. Here, we provide evidence from newly established and virtually homoplasy-free retroposon insertion markers for the basal relationships among marsupial orders. Fifty-three phylogenetically informative markers were retrieved after in silico and experimental screening of approximately 217,000 retroposon-containing loci from opossum and kangaroo. The four Australasian orders share a single origin with Microbiotheria as their closest sister group, supporting a clear divergence between South American and Australasian marsupials. In addition, the new data place the South American opossums (Didelphimorphia) as the first branch of the marsupial tree. The exhaustive computational and experimental evidence provides important insight into the evolution of retroposable elements in the marsupial genome. Placing the retroposon insertion pattern in a paleobiogeographic context indicates a single marsupial migration from South America to Australia. The now firmly established phylogeny can be used to determine the direction of genomic changes and morphological transitions within marsupials.
format	article
author	Maria A Nilsson Gennady Churakov Mirjam Sommer Ngoc Van Tran Anja Zemann Jürgen Brosius Jürgen Schmitz
author_facet	Maria A Nilsson Gennady Churakov Mirjam Sommer Ngoc Van Tran Anja Zemann Jürgen Brosius Jürgen Schmitz
author_sort	Maria A Nilsson
title	Tracking marsupial evolution using archaic genomic retroposon insertions.
title_short	Tracking marsupial evolution using archaic genomic retroposon insertions.
title_full	Tracking marsupial evolution using archaic genomic retroposon insertions.
title_fullStr	Tracking marsupial evolution using archaic genomic retroposon insertions.
title_full_unstemmed	Tracking marsupial evolution using archaic genomic retroposon insertions.
title_sort	tracking marsupial evolution using archaic genomic retroposon insertions.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/a4640bea3aed442385fa6d37ad8e3bcb
work_keys_str_mv	AT mariaanilsson trackingmarsupialevolutionusingarchaicgenomicretroposoninsertions AT gennadychurakov trackingmarsupialevolutionusingarchaicgenomicretroposoninsertions AT mirjamsommer trackingmarsupialevolutionusingarchaicgenomicretroposoninsertions AT ngocvantran trackingmarsupialevolutionusingarchaicgenomicretroposoninsertions AT anjazemann trackingmarsupialevolutionusingarchaicgenomicretroposoninsertions AT jurgenbrosius trackingmarsupialevolutionusingarchaicgenomicretroposoninsertions AT jurgenschmitz trackingmarsupialevolutionusingarchaicgenomicretroposoninsertions
_version_	1718414656870023168

Tracking marsupial evolution using archaic genomic retroposon insertions.

Ejemplares similares