Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments

Abstract Environmental DNA (eDNA) metabarcoding of marine sediments has revealed large amounts of sequences assigned to planktonic taxa. How this planktonic eDNA is delivered on the seafloor and preserved in the sediment is not well understood. We address these questions by comparing metabarcoding a...

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Autores principales:	Inès Barrenechea Angeles, Franck Lejzerowicz, Tristan Cordier, Janin Scheplitz, Michal Kucera, Daniel Ariztegui, Jan Pawlowski, Raphaël Morard
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e2e76b7c009942fcb47f08428f4dc3d5
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spelling	oai:doaj.org-article:e2e76b7c009942fcb47f08428f4dc3d52021-12-02T16:08:53ZPlanktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments10.1038/s41598-020-77179-82045-2322https://doaj.org/article/e2e76b7c009942fcb47f08428f4dc3d52020-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77179-8https://doaj.org/toc/2045-2322Abstract Environmental DNA (eDNA) metabarcoding of marine sediments has revealed large amounts of sequences assigned to planktonic taxa. How this planktonic eDNA is delivered on the seafloor and preserved in the sediment is not well understood. We address these questions by comparing metabarcoding and microfossil foraminifera assemblages in sediment cores taken off Newfoundland across a strong ecological gradient. We detected planktonic foraminifera eDNA down to 30 cm and observed that the planktonic/benthic amplicon ratio changed with depth. The relative proportion of planktonic foraminiferal amplicons remained low from the surface down to 10 cm, likely due to the presence of DNA from living benthic foraminifera. Below 10 cm, the relative proportion of planktonic foraminifera amplicons rocketed, likely reflecting the higher proportion of planktonic eDNA in the DNA burial flux. In addition, the microfossil and metabarcoding assemblages showed a congruent pattern indicating that planktonic foraminifera eDNA is deposited without substantial lateral advection and preserves regional biogeographical patterns, indicating deposition by a similar mechanism as the foraminiferal shells. Our study shows that the planktonic eDNA preserved in marine sediments has the potential to record climatic and biotic changes in the pelagic community with the same spatial and temporal resolution as microfossils.Inès Barrenechea AngelesFranck LejzerowiczTristan CordierJanin ScheplitzMichal KuceraDaniel ArizteguiJan PawlowskiRaphaël MorardNature 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 Inès Barrenechea Angeles Franck Lejzerowicz Tristan Cordier Janin Scheplitz Michal Kucera Daniel Ariztegui Jan Pawlowski Raphaël Morard Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments
description	Abstract Environmental DNA (eDNA) metabarcoding of marine sediments has revealed large amounts of sequences assigned to planktonic taxa. How this planktonic eDNA is delivered on the seafloor and preserved in the sediment is not well understood. We address these questions by comparing metabarcoding and microfossil foraminifera assemblages in sediment cores taken off Newfoundland across a strong ecological gradient. We detected planktonic foraminifera eDNA down to 30 cm and observed that the planktonic/benthic amplicon ratio changed with depth. The relative proportion of planktonic foraminiferal amplicons remained low from the surface down to 10 cm, likely due to the presence of DNA from living benthic foraminifera. Below 10 cm, the relative proportion of planktonic foraminifera amplicons rocketed, likely reflecting the higher proportion of planktonic eDNA in the DNA burial flux. In addition, the microfossil and metabarcoding assemblages showed a congruent pattern indicating that planktonic foraminifera eDNA is deposited without substantial lateral advection and preserves regional biogeographical patterns, indicating deposition by a similar mechanism as the foraminiferal shells. Our study shows that the planktonic eDNA preserved in marine sediments has the potential to record climatic and biotic changes in the pelagic community with the same spatial and temporal resolution as microfossils.
format	article
author	Inès Barrenechea Angeles Franck Lejzerowicz Tristan Cordier Janin Scheplitz Michal Kucera Daniel Ariztegui Jan Pawlowski Raphaël Morard
author_facet	Inès Barrenechea Angeles Franck Lejzerowicz Tristan Cordier Janin Scheplitz Michal Kucera Daniel Ariztegui Jan Pawlowski Raphaël Morard
author_sort	Inès Barrenechea Angeles
title	Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments
title_short	Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments
title_full	Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments
title_fullStr	Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments
title_full_unstemmed	Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments
title_sort	planktonic foraminifera edna signature deposited on the seafloor remains preserved after burial in marine sediments
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/e2e76b7c009942fcb47f08428f4dc3d5
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Planktonic foraminifera eDNA signature deposited on the seafloor remains preserved after burial in marine sediments

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