Terminal-Repeat Retrotransposons with GAG Domain in Plant Genomes: A New Testimony on the Complex World of Transposable Elements

Type Article
Date 2015-02
Language English
Author(s) Chaparro CristianORCID1, Gayraud Thomas2, de Souza Rogerio Fernandes3, Domingues Douglas Silva4, Akaffou Selastique5, Laforga Vanzela Andre Luis3, de Kochko AlexandreORCID2, Rigoreau Michel6, Crouzillat Dominique6, Hamon Serge2, Hamon Perla2, Guyot Romain7
Affiliation(s) 1 : Univ Perpignan, UMR5244 2El, CNRS, UMR Ecol & Evolut Interact 2El 5244, F-66025 Perpignan, France.
2 : UM2, IRD, CIRAD, UMR DIADE, Montpellier, France.
3 : CCB Univ Estadual Londrina UEL, Dept Biol Geral, Londrina, PR, Brazil.
4 : Univ Estadual Paulista, UNESP, Dept Bot, Inst Biociencias, Rio Claro, SP, Brazil.
5 : Univ Jean Lorougnon Guede, Daloa, Cote Ivoire.
6 : Notre Dame Oe, Nestle R&D Tours, Tours, France.
7 : IRD, UMR IPME, Montpellier, France.
Source Genome Biology And Evolution (1759-6653) (Oxford Univ Press), 2015-02 , Vol. 7 , N. 2 , P. 493-504
DOI 10.1093/gbe/evv001
WOS© Times Cited 21
Keyword(s) nonautonomous elements, LTR-retrotransposons, GAG, conservation in plant genomes

A novel structure of nonautonomous long terminal repeat (LTR) retrotransposons called terminal repeat with GAG domain (TR-GAG) has been described in plants, both in monocotyledonous, dicotyledonous and basal angiosperm genomes. TR-GAGs are relatively short elements in length (<4 kb) showing the typical features of LTR-retrotransposons. However, they carry only one open reading frame coding for the GAG precursor protein involved for instance in transposition, the assembly, and the packaging of the element into the virus-like particle. GAG precursors show similarities with both Copia and Gypsy GAG proteins, suggesting evolutionary relationships of TR-GAG elements with both families. Despite the lack of the enzymatic machinery required for their mobility, strong evidences suggest that TR-GAGs are still active. TR-GAGs represent ubiquitous nonautonomous structures that could be involved in the molecular diversities of plant genomes.

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Chaparro Cristian, Gayraud Thomas, de Souza Rogerio Fernandes, Domingues Douglas Silva, Akaffou Selastique, Laforga Vanzela Andre Luis, de Kochko Alexandre, Rigoreau Michel, Crouzillat Dominique, Hamon Serge, Hamon Perla, Guyot Romain (2015). Terminal-Repeat Retrotransposons with GAG Domain in Plant Genomes: A New Testimony on the Complex World of Transposable Elements. Genome Biology And Evolution, 7(2), 493-504. Publisher's official version : https://doi.org/10.1093/gbe/evv001 , Open Access version : https://archimer.ifremer.fr/doc/00615/72715/