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Transposable Elemen...
Transposable Elements Activity is Positively Related to Rate of Speciation in Mammals
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- Ricci, Marco (författare)
- Univ Bologna, Dept Biol Geol & Environm Sci, Bologna, Italy
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- Peona, Valentina (författare)
- Uppsala universitet,Evolutionsbiologi,Univ Bologna, Dept Biol Geol & Environm Sci, Bologna, Italy,Alexander Suh Lab
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- Guichard, Etienne (författare)
- Univ Bologna, Dept Biol Geol & Environm Sci, Bologna, Italy
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- Taccioli, Cristian (författare)
- Univ Padua, Dept Anim Med Hlth & Prod, Padua, Italy
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- Boattini, Alessio (författare)
- Univ Bologna, Dept Biol Geol & Environm Sci, Bologna, Italy
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(creator_code:org_t)
- 2018-05-31
- 2018
- Engelska.
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Ingår i: Journal of Molecular Evolution. - : Springer. - 0022-2844 .- 1432-1432. ; 86:5, s. 303-310
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Transposable elements (TEs) play an essential role in shaping eukaryotic genomes and generating variability. Speciation and TE activity bursts could be strongly related in mammals, in which simple gradualistic models of differentiation do not account for the currently observed species variability. In order to test this hypothesis, we designed two parameters: the Density of insertion (DI) and the Relative rate of speciation (RRS). DI is the ratio between the number of TE insertions in a genome and its size, whereas the RRS is a conditional parameter designed to identify potential speciation bursts. Thus, by analyzing TE insertions in mammals, we defined the genomes as "hot" (high DI) and "cold" (low DI). Then, comparing TE activity among 29 taxonomical families of the whole Mammalia class, 16 intra-order pairs of mammalian species, and four superorders of Eutheria, we showed that taxa with high rates of speciation are associated with "hot" genomes, whereas taxa with low ones are associated with "cold" genomes. These results suggest a remarkable correlation between TE activity and speciation, also being consistent with patterns describing variable rates of differentiation and accounting for the different time frames of the speciation bursts.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- Cold genome
- Mammals evolution
- Rate of speciation
- Relative rate of speciation
- Speciation
- Transposable elements
- Biology with specialization in Evolutionary Genetics
- Biologi med inriktning mot evolutionär genetik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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