Evidence map›Paper›PMID 27973742›Full record

ArticleThe Journal of eukaryotic microbiology2017

Haptophyte Diversity and Vertical Distribution Explored by 18S and 28S Ribosomal RNA Gene Metabarcoding and Scanning Electron Microscopy.

Sandra Gran-Stadniczeñko, Luka Šupraha, Elianne D Egge, Bente Edvardsen

Abstract readComparative Study
In one paragraph

Article in The Journal of eukaryotic microbiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

4 authors.

Sandra Gran-StadniczeñkoDepartment of Biosciences, University of Oslo, PO Box 1066 Blindern, Oslo, 0316, Norway.
Luka ŠuprahaDepartment of Earth Sciences, Uppsala University, Villavägen 16, Uppsala, SE-75236, Sweden.
Elianne D EggeDepartment of Biosciences, University of Oslo, PO Box 1066 Blindern, Oslo, 0316, Norway.
Bente EdvardsenDepartment of Biosciences, University of Oslo, PO Box 1066 Blindern, Oslo, 0316, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Haptophyta encompasses more than 300 species of mostly marine pico- and nanoplanktonic flagellates. Our aims were to investigate the Oslofjorden haptophyte diversity and vertical distribution by metabarcoding, and to improve the approach to study haptophyte community composition, richness and proportional abundance by comparing two rRNA markers and scanning electron microscopy (SEM). Samples were collected in August 2013 at the Outer Oslofjorden, Norway. Total RNA/cDNA was amplified by haptophyte-specific primers targeting the V4 region of the 18S, and the D1-D2 region of the 28S rRNA. Taxonomy was assigned using curated haptophyte reference databases and phylogenetic analyses. Both marker genes showed Chrysochromulinaceae and Prymnesiaceae to be the families with highest number of Operational Taxonomic Units (OTUs), as well as proportional abundance. The 18S rRNA data set also contained OTUs assigned to eight supported and defined clades consisting of environmental sequences only, possibly representing novel lineages from family to class. We also recorded new species for the area. Comparing coccolithophores by SEM with metabarcoding shows a good correspondence with the 18S rRNA gene proportional abundances. Our results contribute to link morphological and molecular data and 28S to 18S rRNA gene sequences of haptophytes without cultured representatives, and to improve metabarcoding methodology.

Indexed as

DNA Barcoding, TaxonomicGenes, rRNAHaptophytaHigh-Throughput Nucleotide SequencingMicroscopy, Electron, ScanningPhylogenyRNA, Ribosomal, 18SRNA, Ribosomal, 28SSequence Analysis, DNARNA, Ribosomal, 18SRNA, Ribosomal, 28SAbundancecoccolithophoreshigh-throughput sequencingOslofjordenphylogenyrichness

Identifiers

PMID27973742
PMCPMC5574017

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.