Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA

Abstract Doubly uniparental inheritance (DUI) of mitochondrial DNA is a rare phenomenon occurring in some freshwater and marine bivalves and is usually characterized by the mitochondrial heteroplasmy of male individuals. Previous research on freshwater Unionida mussels showed that hermaphroditic spe...

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Autores principales:	Marek Lubośny, Aleksandra Przyłucka, Beata Śmietanka, Artur Burzyński
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cac1972e1f2b47d088789c8cb378d431
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spelling	oai:doaj.org-article:cac1972e1f2b47d088789c8cb378d4312021-12-02T15:39:49ZSemimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA10.1038/s41598-020-67976-62045-2322https://doaj.org/article/cac1972e1f2b47d088789c8cb378d4312020-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-67976-6https://doaj.org/toc/2045-2322Abstract Doubly uniparental inheritance (DUI) of mitochondrial DNA is a rare phenomenon occurring in some freshwater and marine bivalves and is usually characterized by the mitochondrial heteroplasmy of male individuals. Previous research on freshwater Unionida mussels showed that hermaphroditic species do not have DUI even if their closest gonochoristic counterparts do. No records showing DUI in a hermaphrodite have ever been reported. Here we show for the first time that the hermaphroditic mussel Semimytilus algosus (Mytilida), very likely has DUI, based on the complete sequences of both mitochondrial DNAs and the distribution of mtDNA types between male and female gonads. The two mitogenomes show considerable divergence (34.7%). The presumably paternal M type mitogenome dominated the male gonads of most studied mussels, while remaining at very low or undetectable levels in the female gonads of the same individuals. If indeed DUI can function in the context of simultaneous hermaphroditism, a change of paradigm regarding its involvement in sex determination is needed. It is apparently associated with gonadal differentiation rather than with sex determination in bivalves.Marek LubośnyAleksandra PrzyłuckaBeata ŚmietankaArtur BurzyńskiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marek Lubośny Aleksandra Przyłucka Beata Śmietanka Artur Burzyński Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA
description	Abstract Doubly uniparental inheritance (DUI) of mitochondrial DNA is a rare phenomenon occurring in some freshwater and marine bivalves and is usually characterized by the mitochondrial heteroplasmy of male individuals. Previous research on freshwater Unionida mussels showed that hermaphroditic species do not have DUI even if their closest gonochoristic counterparts do. No records showing DUI in a hermaphrodite have ever been reported. Here we show for the first time that the hermaphroditic mussel Semimytilus algosus (Mytilida), very likely has DUI, based on the complete sequences of both mitochondrial DNAs and the distribution of mtDNA types between male and female gonads. The two mitogenomes show considerable divergence (34.7%). The presumably paternal M type mitogenome dominated the male gonads of most studied mussels, while remaining at very low or undetectable levels in the female gonads of the same individuals. If indeed DUI can function in the context of simultaneous hermaphroditism, a change of paradigm regarding its involvement in sex determination is needed. It is apparently associated with gonadal differentiation rather than with sex determination in bivalves.
format	article
author	Marek Lubośny Aleksandra Przyłucka Beata Śmietanka Artur Burzyński
author_facet	Marek Lubośny Aleksandra Przyłucka Beata Śmietanka Artur Burzyński
author_sort	Marek Lubośny
title	Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA
title_short	Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA
title_full	Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA
title_fullStr	Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA
title_full_unstemmed	Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA
title_sort	semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial dna
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/cac1972e1f2b47d088789c8cb378d431
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Semimytilus algosus: first known hermaphroditic mussel with doubly uniparental inheritance of mitochondrial DNA

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