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Biol Lett. 2016 Aug;12(8). pii: 20160407. doi: 10.1098/rsbl.2016.0407.

Strong phylogenetic inertia on genome size and transposable element content among 26 species of flies.

Author information

1
Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Claude Bernard Lyon 1, CNRS, UMR5558, 69100 Villeurbanne, France.
2
Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Claude Bernard Lyon 1, CNRS, UMR5558, 69100 Villeurbanne, France annabelle.haudry@univ-lyon1.fr.

Abstract

While the evolutionary mechanisms driving eukaryote genome size evolution are still debated, repeated element content appears to be crucial. Here, we reconstructed the phylogeny and identified repeats in the genome of 26 Drosophila exhibiting a twofold variation in genome size. The content in transposable elements (TEs) is highly correlated to genome size evolution among these closely related species. We detected a strong phylogenetic signal on the evolution of both genome size and TE content, and a genome contraction in the Drosophila melanogaster subgroup.

KEYWORDS:

flies; genome size; phylogenetic inertia; transposable elements

PMID:
27576524
PMCID:
PMC5014035
DOI:
10.1098/rsbl.2016.0407
[Indexed for MEDLINE]
Free PMC Article

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