Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 509079
Title Genome expansion of Arabis alpina linked with retrotransposition and reduced symmetric DNA methylation
Author(s) Willing, Eva Maria; Rawat, Vimal; Mandáková, Terezie; Maumus, Florian; James, Geo Velikkakam; Nordström, Karl J.V.; Becker, Claude; Warthmann, Norman; Chica, Claudia; Szarzynska, Bogna; Zytnicki, Matthias; Albani, Maria C.; Kiefer, Christiane; Bergonzi, Sara; Castaings, Loren; Mateos, Julieta L.; Berns, Markus C.; Bujdoso, Nora; Piofczyk, Thomas; Lorenzo, Laura De; Barrero-Sicilia, Cristina; Mateos, Isabel; Piednoël, Mathieu; Hagmann, Jörg; Chen-Min-Tao, Romy; Iglesias-Fernández, Raquel; Schuster, Stephan C.; Alonso-Blanco, Carlos; Roudier, François; Carbonero, Pilar; Paz-Ares, Javier; Davis, Seth J.; Pecinka, Ales; Quesneville, Hadi; Colot, Vincent; Lysak, Martin A.; Weigel, Detlef; Coupland, George; Schneeberger, Korbinian
Source Nature Plants 1 (2015). - ISSN 2055-026X - 7 p.
DOI http://dx.doi.org/10.1038/nplants.2014.23
Department(s) Laboratory of Plant Breeding
Publication type Refereed Article in a scientific journal
Publication year 2015
Abstract

Despite evolutionary conserved mechanisms to silence transposable element activity, there are drastic differences in the abundance of transposable elements even among closely related plant species. We conducted a de novo assembly for the 375 .Mb genome of the perennial model plant, Arabis alpina. Analysing this genome revealed long-lasting and recent transposable element activity predominately driven by Gypsy long terminal repeat retrotransposons, which extended the low-recombining pericentromeres and transformed large formerly euchromatic regions into repeat-rich pericentromeric regions. This reduced capacity for long terminal repeat retrotransposon silencing and removal in A. alpina co-occurs with unexpectedly low levels of DNA methylation. Most remarkably, the striking reduction of symmetrical CG and CHG methylation suggests weakened DNA methylation maintenance in A. alpina compared with Arabidopsis thaliana. Phylogenetic analyses indicate a highly dynamic evolution of some components of methylation maintenance machinery that might be related to the unique methylation in A. alpina.

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