Evidence map›Paper›PMID 27028195›Full record

ArticlePloS one2016

DNA-Based Taxonomy in Ecologically Versatile Microalgae: A Re-Evaluation of the Species Concept within the Coccoid Green Algal Genus Coccomyxa (Trebouxiophyceae, Chlorophyta).

Veronica Malavasi, Pavel Škaloud, Fabio Rindi, Sabrina Tempesta, Michela Paoletti, Marcella Pasqualetti

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

26 citing papers in PubMed, 79 citations in OpenAlex.

  1. Article
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  6. Phylogeny and fatty acid profiles of newFrontiers in microbiology · 2025
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  14. Description of the Soil DiatomPlants (Basel, Switzerland) · 2022
    Article
  15. Article
  16. Metabolomics and lipid profile analysis of Coccomyxa melkonianii SCCA 048.Extremophiles : life under extreme conditions · 2021
    Article
  17. Article
  18. Article
  19. Article
  20. Adaptation ofMicroorganisms · 2020
    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

6 authors at 4 institutions in 2 countries.

Veronica MalavasiInterdepartmental Center of Environmental Science and Engineering (CINSA), University of Cagliari, Cagliari, Italy.
Pavel ŠkaloudDepartment of Botany, Faculty of Science, Charles University of Prague, Prague, Czech Republic.
Fabio RindiDipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy.
Sabrina TempestaDepartment of biological and ecological sciences, Tuscia University, Viterbo, Italy.
Michela PaolettiDepartment of biological and ecological sciences, Tuscia University, Viterbo, Italy.
Marcella PasqualettiDepartment of biological and ecological sciences, Tuscia University, Viterbo, Italy.
Università degli Studi della Tuscia · ITCharles University · CZMarche Polytechnic University · ITUniversity of Cagliari · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Coccomyxa is a genus of unicellular green algae of the class Trebouxiophyceae, well known for its cosmopolitan distribution and great ecological amplitude. The taxonomy of this genus has long been problematic, due to reliance on badly-defined and environmentally variable morphological characters. In this study, based on the discovery of a new species from an extreme habitat, we reassess species circumscription in Coccomyxa, a unicellular genus of the class Trebouxiophyceae, using a combination of ecological and DNA sequence data (analyzed with three different methods of algorithmic species delineation). Our results are compared with those of a recent integrative study of Darienko and colleagues that reassessed the taxonomy of Coccomyxa, recognizing 7 species in the genus. Expanding the dataset from 43 to 61 sequences (SSU + ITS rDNA) resulted in a different delimitation, supporting the recognition of a higher number of species (24 to 27 depending on the analysis used, with the 27-species scenario receiving the strongest support). Among these, C. melkonianii sp. nov. is described from material isolated from a river highly polluted by heavy metals (Rio Irvi, Sardinia, Italy). Analyses performed on ecological characters detected a significant phylogenetic signal in six different characters. We conclude that the 27-species scenario is presently the most realistic for Coccomyxa and we suggest that well-supported lineages distinguishable by ecological preferences should be recognized as different species in this genus. We also recommend that for microbial lineages in which the overall diversity is unknown and taxon sampling is sparse, as is often the case for green microalgae, the results of analyses for algorithmic DNA-based species delimitation should be interpreted with extreme caution.

Indexed as

ChlorophytaDNA, PlantDNA, Ribosomal SpacerEvolution, MolecularMicroalgaePhylogenySequence Analysis, DNADNA, PlantDNA, Ribosomal Spacer

Identifiers

PMID27028195
PMCPMC4814044
OpenAlexW2327087512

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.