Evidence map›Paper›PMID 28821238›Full record

ArticleBMC genomics2017

Genome-wide analysis of LTR-retrotransposon diversity and its impact on the evolution of the genus Helianthus (L.).

Flavia Mascagni, Tommaso Giordani, Marilena Ceccarelli, Andrea Cavallini, Lucia Natali

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Article in BMC genomics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
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1 · What the graph read from it

What it found

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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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3 · Its place in the literature

Who cites it

30 citing papers in PubMed.

  1. Article
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  9. Characterisation of LTR-Retrotransposons ofInternational journal of molecular sciences · 2022
    Article
  10. Review
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  12. The Singular Evolution ofFrontiers in plant science · 2022
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

5 authors.

Flavia MascagniDepartment of Agriculture, Food and Environment, University of Pisa, 56124, Pisa, Italy.
Tommaso GiordaniDepartment of Agriculture, Food and Environment, University of Pisa, 56124, Pisa, Italy.
Marilena CeccarelliDepartment of Chemistry, Biology and Biotechnology, University of Perugia, 06123, Perugia, Italy.
Andrea CavalliniDepartment of Agriculture, Food and Environment, University of Pisa, 56124, Pisa, Italy.
Lucia NataliDepartment of Agriculture, Food and Environment, University of Pisa, 56124, Pisa, Italy. lucia.natali@unipi.it.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGenome divergence by mobile elements activity and recombination is a continuous process that plays a key role in the evolution of species. Nevertheless, knowledge on retrotransposon-related variability among species belonging to the same genus is still limited. Considering the importance of the genus Helianthus, a model system for studying the ecological genetics of speciation and adaptation, we performed a comparative analysis of the repetitive genome fraction across ten species and one subspecies of sunflower, focusing on long terminal repeat retrotransposons at superfamily, lineage and sublineage levels.

resultsAfter determining the relative genome size of each species, genomic DNA was isolated and subjected to Illumina sequencing. Then, different assembling and clustering approaches allowed exploring the repetitive component of all genomes. On average, repetitive DNA in Helianthus species represented more than 75% of the genome, being composed mostly by long terminal repeat retrotransposons. Also, the prevalence of Gypsy over Copia superfamily was observed and, among lineages, Chromovirus was by far the most represented. Although nearly all the same sublineages are present in all species, we found considerable variability in the abundance of diverse retrotransposon lineages and sublineages, especially between annual and perennial species.

conclusionsThis large variability should indicate that different events of amplification or loss related to these elements occurred following species separation and should have been involved in species differentiation. Our data allowed us inferring on the extent of interspecific repetitive DNA variation related to LTR-RE abundance, investigating the relationship between changes of LTR-RE abundance and the evolution of the genus, and determining the degree of coevolution of different LTR-RE lineages or sublineages between and within species. Moreover, the data suggested that LTR-RE abundance in a species was affected by the annual or perennial habit of that species.

Indexed as

Evolution, MolecularGenetic VariationGenomicsHelianthusRetroelementsSpecies SpecificityTerminal Repeat SequencesRetroelementsAnnual and perennial habitComparative genomicsHelianthusLTR-retrotransposonsPlant genome evolutionRepetitive DNA

Identifiers

PMID28821238
PMCPMC5563062

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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.