Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice
Retrotransposons are the main components of eukaryotic genomes, representing up to 80% of some large plant genomes. These mobile elements transpose via a “copy and paste” mechanism, thus increasing their copy number while active. Their accumulation is now accepted as the main factor of genome size i...
| Autores principales: | , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cold Spring Harbor Laboratory
2006
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| Acceso en línea: | https://hdl.handle.net/10568/166565 |
| _version_ | 1855537922743205888 |
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| author | Piegu, Benoit Guyot, Romain Picault, Nathalie Roulin, Anne Saniyal, Abhijit Kim, Hyeran Collura, Kristi Brar, Darshan S. Jackson, Scott Wing, Rod A. Panaud, Olivier |
| author_browse | Brar, Darshan S. Collura, Kristi Guyot, Romain Jackson, Scott Kim, Hyeran Panaud, Olivier Picault, Nathalie Piegu, Benoit Roulin, Anne Saniyal, Abhijit Wing, Rod A. |
| author_facet | Piegu, Benoit Guyot, Romain Picault, Nathalie Roulin, Anne Saniyal, Abhijit Kim, Hyeran Collura, Kristi Brar, Darshan S. Jackson, Scott Wing, Rod A. Panaud, Olivier |
| author_sort | Piegu, Benoit |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Retrotransposons are the main components of eukaryotic genomes, representing up to 80% of some large plant genomes. These mobile elements transpose via a “copy and paste” mechanism, thus increasing their copy number while active. Their accumulation is now accepted as the main factor of genome size increase in higher eukaryotes, besides polyploidy. However, the dynamics of this process are poorly understood. In this study, we show that Oryza australiensis, a wild relative of the Asian cultivated rice O. sativa, has undergone recent bursts of three LTR-retrotransposon families. This genome has accumulated more than 90,000 retrotransposon copies during the last three million years, leading to a rapid twofold increase of its size. In addition, phenetic analyses of these retrotransposons clearly confirm that the genomic bursts occurred posterior to the radiation of the species. This provides direct evidence of retrotransposon-mediated variation of genome size within a plant genus. |
| format | Journal Article |
| id | CGSpace166565 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | Cold Spring Harbor Laboratory |
| publisherStr | Cold Spring Harbor Laboratory |
| record_format | dspace |
| spelling | CGSpace1665652024-12-19T14:13:28Z Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice Piegu, Benoit Guyot, Romain Picault, Nathalie Roulin, Anne Saniyal, Abhijit Kim, Hyeran Collura, Kristi Brar, Darshan S. Jackson, Scott Wing, Rod A. Panaud, Olivier genomes phenetics retrotransposons transposition wild relatives oryza australiensis Retrotransposons are the main components of eukaryotic genomes, representing up to 80% of some large plant genomes. These mobile elements transpose via a “copy and paste” mechanism, thus increasing their copy number while active. Their accumulation is now accepted as the main factor of genome size increase in higher eukaryotes, besides polyploidy. However, the dynamics of this process are poorly understood. In this study, we show that Oryza australiensis, a wild relative of the Asian cultivated rice O. sativa, has undergone recent bursts of three LTR-retrotransposon families. This genome has accumulated more than 90,000 retrotransposon copies during the last three million years, leading to a rapid twofold increase of its size. In addition, phenetic analyses of these retrotransposons clearly confirm that the genomic bursts occurred posterior to the radiation of the species. This provides direct evidence of retrotransposon-mediated variation of genome size within a plant genus. 2006-10 2024-12-19T12:56:23Z 2024-12-19T12:56:23Z Journal Article https://hdl.handle.net/10568/166565 en Cold Spring Harbor Laboratory Piegu, Benoit; Guyot, Romain; Picault, Nathalie; Roulin, Anne; Saniyal, Abhijit; Kim, Hyeran; Collura, Kristi; Brar, Darshan S.; Jackson, Scott; Wing, Rod A. and Panaud, Olivier. 2006. Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice. Genome Res., Volume 16 no. 10 p. 1262-1269 |
| spellingShingle | genomes phenetics retrotransposons transposition wild relatives oryza australiensis Piegu, Benoit Guyot, Romain Picault, Nathalie Roulin, Anne Saniyal, Abhijit Kim, Hyeran Collura, Kristi Brar, Darshan S. Jackson, Scott Wing, Rod A. Panaud, Olivier Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice |
| title | Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice |
| title_full | Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice |
| title_fullStr | Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice |
| title_full_unstemmed | Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice |
| title_short | Doubling genome size without polyploidization: dynamics of retrotransposition-driven genomic expansions in Oryza australiensis, a wild relative of rice |
| title_sort | doubling genome size without polyploidization dynamics of retrotransposition driven genomic expansions in oryza australiensis a wild relative of rice |
| topic | genomes phenetics retrotransposons transposition wild relatives oryza australiensis |
| url | https://hdl.handle.net/10568/166565 |
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