Universität zu Köln

Nowell, Reuben W., Wilson, Christopher G., Almeida, Pedro ORCID: 0000-0001-6790-8687, Schiffer, Philipp H., Fontaneto, Diego, Becks, Lutz, Rodriguez, Fernando, Arkhipova, Irina R. and Barraclough, Timothy G. (2021). Evolutionary dynamics of transposable elements in bdelloid rotifers. eLife, 10. CAMBRIDGE: eLIFE SCIENCES PUBL LTD. ISSN 2050-084X

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Abstract

Transposable elements (TEs) are selfish genomic parasites whose ability to spread autonomously is facilitated by sexual reproduction in their hosts. If hosts become obligately asexual, TE frequencies and dynamics are predicted to change dramatically, but the long-term outcome is unclear. Here, we test current theory using whole-genome sequence data from eight species of bdelloid rotifers, a class of invertebrates in which males are thus far unknown. Contrary to expectations, we find a variety of active TEs in bdelloid genomes, at an overall frequency within the range seen in sexual species. We find no evidence that TEs are spread by cryptic recombination or restrained by unusual DNA repair mechanisms. Instead, we find that that TE content evolves relatively slowly in bdelloids and that gene families involved in RNAi-mediated TE suppression have undergone significant expansion, which might mitigate the deleterious effects of active TEs and compensate for the consequences of long-term asexuality.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Nowell, Reuben W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wilson, Christopher G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Almeida, Pedro UNSPECIFIED orcid.org/0000-0001-6790-8687 UNSPECIFIED Schiffer, Philipp H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fontaneto, Diego UNSPECIFIED UNSPECIFIED UNSPECIFIED Becks, Lutz UNSPECIFIED UNSPECIFIED UNSPECIFIED Rodriguez, Fernando UNSPECIFIED UNSPECIFIED UNSPECIFIED Arkhipova, Irina R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Barraclough, Timothy G. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-598852
DOI:	10.7554/eLife.63194
Journal or Publication Title:	eLife
Volume:	10
Date:	2021
Publisher:	eLIFE SCIENCES PUBL LTD
Place of Publication:	CAMBRIDGE
ISSN:	2050-084X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HORIZONTAL GENE-TRANSFER; ADINETA-VAGA; SEXUAL REPRODUCTION; GENOME ANNOTATION; SELFISH DNA; R PACKAGE; SEQUENCE; REVEALS; RETROTRANSPOSONS; SELECTION Multiple languages Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59885