Evidence map›Paper›PMID 23658006›Full record

ArticleBiology letters2013

Ancient DNA complements microfossil record in deep-sea subsurface sediments.

Franck Lejzerowicz, Philippe Esling, Wojciech Majewski, Witold Szczuciński, Johan Decelle, Cyril Obadia, Pedro Martinez Arbizu, Jan Pawlowski

Open access · greenAbstract read
In one paragraph

Article in Biology letters, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
10.9field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 113 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 4 countries.

Franck LejzerowiczDepartment of Genetics and Evolution, University of Geneva, Genève 4, Switzerland. franck.lejzerowicz@unige.ch
Philippe Esling
Wojciech Majewski
Witold Szczuciński
Johan Decelle
Cyril Obadia
Pedro Martinez Arbizu
Jan Pawlowski
University of Geneva · CHAdam Mickiewicz University in Poznań · PLCentre National de la Recherche Scientifique · FRInstitute of Paleobiology · PLSenckenberg am Meer · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Deep-sea subsurface sediments are the most important archives of marine biodiversity. Until now, these archives were studied mainly using the microfossil record, disregarding large amounts of DNA accumulated on the deep-sea floor. Accessing ancient DNA (aDNA) molecules preserved down-core would offer unique insights into the history of marine biodiversity, including both fossilized and non-fossilized taxa. Here, we recover aDNA of eukaryotic origin across four cores collected at abyssal depths in the South Atlantic, in up to 32.5 thousand-year-old sediment layers. Our study focuses on Foraminifera and Radiolaria, two major groups of marine microfossils also comprising diverse non-fossilized taxa. We describe their assemblages in down-core sediment layers applying both micropalaeontological and environmental DNA sequencing approaches. Short fragments of the foraminiferal and radiolarian small subunit rRNA gene recovered from sedimentary DNA extracts provide evidence that eukaryotic aDNA is preserved in deep-sea sediments encompassing the last glacial maximum. Most aDNA were assigned to non-fossilized taxa that also dominate in molecular studies of modern environments. Our study reveals the potential of aDNA to better document the evolution of past marine ecosystems and opens new horizons for the development of deep-sea palaeogenomics.

Indexed as

FossilsAtlantic OceanDNA, ProtozoanForaminiferaGeologic SedimentsMolecular Sequence DataRhizariaSequence Analysis, DNADNA, Protozoanancient DNAdeep-sea sedimentsmicrofossilsnext-generation sequencingpalaeogenomics

Identifiers

PMID23658006
PMCPMC3730641
OpenAlexW2145911868

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.