Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome

Abstract Wood falls provide episodic fluxes of energy to the sea floor that are degraded by a species-rich benthic fauna. Part of this rich diversity includes annelid polychaetes but unfortunately, our understanding of such fauna is limited and their genetic variability and evolutionary origins rema...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Angelo F. Bernardino, Yuanning Li, Craig R. Smith, Kenneth M. Halanych
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/82a368b44d2942debc14f2b0d2fa1cc8
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:82a368b44d2942debc14f2b0d2fa1cc8
record_format	dspace
spelling	oai:doaj.org-article:82a368b44d2942debc14f2b0d2fa1cc82021-12-02T16:06:01ZMultiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome10.1038/s41598-017-04094-w2045-2322https://doaj.org/article/82a368b44d2942debc14f2b0d2fa1cc82017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04094-whttps://doaj.org/toc/2045-2322Abstract Wood falls provide episodic fluxes of energy to the sea floor that are degraded by a species-rich benthic fauna. Part of this rich diversity includes annelid polychaetes but unfortunately, our understanding of such fauna is limited and their genetic variability and evolutionary origins remain poorly known. In this study, we sequenced complete mitochondrial genomes from three congeneric Decemunciger (Ampharetidae) individuals that had colonized multiple wood falls in the deep (~1600 m) NE Pacific Ocean. Mitochondrial gene order within Decemunciger was similar to the three other available Terebellomorpha genomes, consistent with the relatively conserved nature of mitochondrial genomes within annelids. Unexpectedly, we found introns within the cox1, nad1 and nad4 genes of all three genomes assembled. This is the greatest number of introns observed in annelid mtDNA genomes, and possibly in bilaterians. Interestingly, the introns were of variable sizes suggesting possible evolutionary differences in the age and origins of introns. The sequence of the introns within cox1 is similar to Group II introns previously identified, suggesting that introns in the mitochondrial genome of annelids may be more widespread then realized. Phylogenetically, Decemunciger appears to be a sister clade among current vent and seep deep-sea Ampharetinae.Angelo F. BernardinoYuanning LiCraig R. SmithKenneth M. HalanychNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Angelo F. Bernardino Yuanning Li Craig R. Smith Kenneth M. Halanych Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome
description	Abstract Wood falls provide episodic fluxes of energy to the sea floor that are degraded by a species-rich benthic fauna. Part of this rich diversity includes annelid polychaetes but unfortunately, our understanding of such fauna is limited and their genetic variability and evolutionary origins remain poorly known. In this study, we sequenced complete mitochondrial genomes from three congeneric Decemunciger (Ampharetidae) individuals that had colonized multiple wood falls in the deep (~1600 m) NE Pacific Ocean. Mitochondrial gene order within Decemunciger was similar to the three other available Terebellomorpha genomes, consistent with the relatively conserved nature of mitochondrial genomes within annelids. Unexpectedly, we found introns within the cox1, nad1 and nad4 genes of all three genomes assembled. This is the greatest number of introns observed in annelid mtDNA genomes, and possibly in bilaterians. Interestingly, the introns were of variable sizes suggesting possible evolutionary differences in the age and origins of introns. The sequence of the introns within cox1 is similar to Group II introns previously identified, suggesting that introns in the mitochondrial genome of annelids may be more widespread then realized. Phylogenetically, Decemunciger appears to be a sister clade among current vent and seep deep-sea Ampharetinae.
format	article
author	Angelo F. Bernardino Yuanning Li Craig R. Smith Kenneth M. Halanych
author_facet	Angelo F. Bernardino Yuanning Li Craig R. Smith Kenneth M. Halanych
author_sort	Angelo F. Bernardino
title	Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome
title_short	Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome
title_full	Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome
title_fullStr	Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome
title_full_unstemmed	Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome
title_sort	multiple introns in a deep-sea annelid (decemunciger: ampharetidae) mitochondrial genome
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/82a368b44d2942debc14f2b0d2fa1cc8
work_keys_str_mv	AT angelofbernardino multipleintronsinadeepseaanneliddecemuncigerampharetidaemitochondrialgenome AT yuanningli multipleintronsinadeepseaanneliddecemuncigerampharetidaemitochondrialgenome AT craigrsmith multipleintronsinadeepseaanneliddecemuncigerampharetidaemitochondrialgenome AT kennethmhalanych multipleintronsinadeepseaanneliddecemuncigerampharetidaemitochondrialgenome
_version_	1718385158151733248

Multiple introns in a deep-sea Annelid (Decemunciger: Ampharetidae) mitochondrial genome

Ejemplares similares