Evidence map›Paper›PMID 25403617›Full record

ArticleBMC evolutionary biology2014

Evolutionary origin of highly repetitive plastid genomes within the clover genus (Trifolium).

Saemundur Sveinsson, Quentin Cronk

Open access · goldAbstract read
In one paragraph

Article in BMC evolutionary biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
5.1field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
  2. Article
  3. Chloroplast Genomes Evolution and Phylogenetic Relationships ofInternational journal of molecular sciences · 2024
    Article
  4. Article
  5. Chloroplast genomes of fourFrontiers in plant science · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Chromosome and Genome Diversity in the GenusPlants (Basel, Switzerland) · 2021
    Review
  11. Article
  12. Article
  13. Variation in Ribosomal DNA in the GenusPlants (Basel, Switzerland) · 2021
    Article
  14. Article
  15. Comparative Mitogenome Analysis of the GenusInternational journal of molecular sciences · 2020
    Article
  16. Article
  17. Article
  18. Complete plastid genome ofJournal of genetics · 2019
    Article
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Saemundur Sveinsson
Quentin Cronk
University of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSome clover species, particularly Trifolium subterraneum, have previously been reported to have highly unusual plastomes, relative to closely related legumes, enlarged with many duplications, gene losses and the presence of DNA unique to Trifolium, which may represent horizontal transfer. In order to pinpoint the evolutionary origin of this phenomenon within the genus Trifolium, we sequenced and assembled the plastomes of eight additional Trifolium species widely sampled from across the genus.

resultsThe Trifolium plastomes fell into two groups: those of Trifolium boissieri, T. strictum and T. glanduliferum (representing subgenus Chronosemium and subg. Trifolium section Paramesus) were tractable, assembled readily and were not unusual in the general context of Fabeae plastomes. The other Trifolium species ("core Trifolium") proved refractory to assembly mainly because of numerous short duplications. These species form a single clade, which we call the "refractory clade" (comprising subg, Trifolium sections Lupinaster, Trifolium, Trichocephalum, Vesicastrum and Trifoliastrum). The characteristics of the refractory clade are the presence of numerous short duplications and 7-15% longer genomes than the tractable species. Molecular dating estimates that the origin of the most recent common ancestor (MRCA) of the refractory clade is approximately 13.1 million years ago (MYA). This is considerably younger than the estimated MRCA ages of Trifolium (c. 18.6 MYA) and Trifolium subg. Trifolium (16.1 MYA).

conclusionsWe conclude that the unusual repetitive plastome type previously characterized in Trifolium subterraneum had a single origin within Trifolium and is characteristic of most (but not all) species of subgenus Trifolium. It appears that an ancestral plastome within Trifolium underwent an evolutionary change resulting in plastomes that either actively promoted, were permissive to, or were unable to control, duplications within the genome. The precise mechanism of this important change in the mode and tempo of plastome evolution deserves further investigation.

Indexed as

Genome, PlastidBiological EvolutionChromosome MappingEvolution, MolecularFabaceaeMedicagoMolecular Sequence DataTrifolium

Identifiers

PMID25403617
PMCPMC4241210
OpenAlexW2083157660

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.