Mechanisms of Adaptation and Genome Organization (MANGO)
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Laboratoire Génome et Développement des Plantes (LGDP), CNRS UMR5096, Université Perpignan Via domitia
52 avenue Paul alduy
Université de Perpignan Via Domitia
66860 Perpignan cedex
Scientific Interest
The research activities of the group mostly concern the structure, evolution and function of the genomes of wild and cultivated species from the Oryza (rice) genus, particularly the impact of Transposable Elements (TEs) and genome duplication. Our previous studies, focusing on LTR- retrotransposons, led us to propose a model for plant genome evolution (Vitte and Panaud, 2005) in which two counteracting forces, expansion by addition of new copies (Piegu et al., 2006) and contraction through recombination or deletion (Vitte et al., 2007, Vitte and Panaud, 2003), are responsible for variation in genome size. We participated in annotation of LTR-retrotransposons in the rice genome in the Rice Annotation Project (RAP3) and have created a database of the rice LTR-retrotransposons, available at www.retroryza.org (Chaparro et al., 2007). Our current projects concern functional aspects of TEs in the rice genome as well as the use of Next Generation Sequencing techniques to understand short-term genome dynamics by analysis of TE mobility in rice (Sabot, Picault et al., 2011). The importance of genome duplication was highlighted by analysis of the model genome species, Arabidopsis thaliana and Oryza sativa. Several mechanisms implicated in genome evolution after duplication (large-scale rearrangement (Blanc et al. 2000), diploidization, nested chromosome fusion (Salse et al. 2008) and TE activity) have been characterized. We recently described the importance of large-scale and recurrent gene conversion in the evolution of species from the Oryza genus (Jacquemin et al. 2009). Future work concerns the application of specific tools to elucidate common and specific mechanisms implicated in animal and plant genome evolution.
The research activities of the group mostly concern the structure, evolution and function of the genomes of wild and cultivated species from the Oryza (rice) genus, particularly the impact of Transposable Elements (TEs) and genome duplication. Our previous studies, focusing on LTR- retrotransposons, led us to propose a model for plant genome evolution (Vitte and Panaud, 2005) in which two counteracting forces, expansion by addition of new copies (Piegu et al., 2006) and contraction through recombination or deletion (Vitte et al., 2007, Vitte and Panaud, 2003), are responsible for variation in genome size. We participated in annotation of LTR-retrotransposons in the rice genome in the Rice Annotation Project (RAP3) and have created a database of the rice LTR-retrotransposons, available at www.retroryza.org (Chaparro et al., 2007). Our current projects concern functional aspects of TEs in the rice genome as well as the use of Next Generation Sequencing techniques to understand short-term genome dynamics by analysis of TE mobility in rice (Sabot, Picault et al., 2011). The importance of genome duplication was highlighted by analysis of the model genome species, Arabidopsis thaliana and Oryza sativa. Several mechanisms implicated in genome evolution after duplication (large-scale rearrangement (Blanc et al. 2000), diploidization, nested chromosome fusion (Salse et al. 2008) and TE activity) have been characterized. We recently described the importance of large-scale and recurrent gene conversion in the evolution of species from the Oryza genus (Jacquemin et al. 2009). Future work concerns the application of specific tools to elucidate common and specific mechanisms implicated in animal and plant genome evolution.
Thematic