Evidence map›Paper›PMID 36302793›Full record

ArticleScientific reports2022

Morphological diversity and molecular phylogeny of five Paramecium bursaria (Alveolata, Ciliophora, Oligohymenophorea) syngens and the identification of their green algal endosymbionts.

Christian Spanner, Tatyana Darienko, Sabine Filker, Bettina Sonntag, Thomas Pröschold

Abstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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

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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

12 citing papers in PubMed.

  1. Article
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  9. Article
  10. Review
  11. Annual review of genetics · 2023
    Review
  12. Establishment of an unfed strain ofFrontiers in microbiology · 2023
    Article
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

5 authors.

Christian SpannerResearch Department for Limnology, Mondsee, University of Innsbruck, Mondsee, Austria.
Tatyana DarienkoResearch Department for Limnology, Mondsee, University of Innsbruck, Mondsee, Austria.
Sabine FilkerMolecular Ecology Group, Technische Universität Kaiserslautern, Kaiserslautern, Germany.
Bettina SonntagResearch Department for Limnology, Mondsee, University of Innsbruck, Mondsee, Austria.
Thomas PröscholdResearch Department for Limnology, Mondsee, University of Innsbruck, Mondsee, Austria. thomas.proeschold@uibk.ac.at.

Funding

Austrian Science Fund P28333-B25Austrian Science Fund FWF P 28333
6 · The paper itself

Abstract

Paramecium bursaria is a mixotrophic ciliate species, which is common in stagnant and slow-flowing, nutrient-rich waters. It is usually found living in symbiosis with zoochlorellae (green algae) of the genera Chlorella or Micractinium. We investigated P. bursaria isolates from around the world, some of which have already been extensively studied in various laboratories, but whose morphological and genetic identity has not yet been completely clarified. Phylogenetic analyses of the SSU and ITS rDNA sequences revealed five highly supported lineages, which corresponded to the syngen and most likely to the biological species assignment. These syngens R1-R5 could also be distinguished by unique synapomorphies in the secondary structures of the SSU and the ITS. Considering these synapomorphies, we could clearly assign the existing GenBank entries of P. bursaria to specific syngens. In addition, we discovered synapomorphies at amino acids of the COI gene for the identification of the syngens. Using the metadata of these entries, most syngens showed a worldwide distribution, however, the syngens R1 and R5 were only found in Europe. From morphology, the syngens did not show any significant deviations. The investigated strains had either Chlorella variabilis, Chlorella vulgaris or Micractinium conductrix as endosymbionts.

Indexed as

AlveolataChlorella vulgarisChlorophytaCiliophoraOligohymenophoreaParameciumPhylogenySymbiosis

Identifiers

PMID36302793
PMCPMC9613978

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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.