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Transposable Elements Activity is Positively Related to Rate of Speciation in Mammals

Ricci, Marco ; Peona, Valentina ; Guichard, Etienne ; Taccioli, Cristian ; Boattini, Alessio

Journal of molecular evolution, 2018-06, Vol.86 (5), p.303-310 [Periódico revisado por pares]

New York: Springer US

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Título:
Transposable Elements Activity is Positively Related to Rate of Speciation in Mammals
Autor: Ricci, Marco ; Peona, Valentina ; Guichard, Etienne ; Taccioli, Cristian ; Boattini, Alessio
Assuntos: Animal Genetics and Genomics ; Biologi med inriktning mot evolutionär genetik ; Biology with specialization in Evolutionary Genetics ; Biomedical and Life Sciences ; Bursting strength ; Bursts ; Cell Biology ; Cold genome ; Differentiation ; Evolutionary Biology ; Genomes ; Life Sciences ; Mammals ; Mammals evolution ; Microbiology ; Original ; Original Article ; Parameter identification ; Plant Genetics and Genomics ; Plant Sciences ; Rate of speciation ; Relative rate of speciation ; Speciation ; Taxa ; Transposable elements ; Variability
É parte de: Journal of molecular evolution, 2018-06, Vol.86 (5), p.303-310
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: 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.
Editor: New York: Springer US
Idioma: Inglês

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Transposable Elements Activity is Positively Related to Rate of Speciation in Mammals

Ricci, Marco ; Peona, Valentina ; Guichard, Etienne ; Taccioli, Cristian ; Boattini, Alessio

New York: Springer US

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