1. Copia-, Gypsy- and Line-like Retrotransposon Fragments in the Mitochondrial Genome of Arabidopsis Thaliana
- Author
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Volker Knoop, Joachim Marienfeld, Sabine Sünkel, Petra Brandt, Axel Brennicke, Michael Unseld, and Henriette Ullrich
- Subjects
Genetics ,Mitochondrial DNA ,Nuclear gene ,biology ,Base Sequence ,DNA, Plant ,Retroelements ,fungi ,Molecular Sequence Data ,Arabidopsis ,food and beverages ,Retrotransposon ,Investigations ,biology.organism_classification ,Genome ,DNA, Mitochondrial ,Mutagenesis, Insertional ,Arabidopsis thaliana ,Amino Acid Sequence ,Conserved Sequence - Abstract
Several retrotransposon fragments are integrated in the mitochondrial genome of Arabidopsis thaliana. These insertions are derived from all three classes of nuclear retrotransposons, the Tyl/copia, Ty3/gypsy- and non-LTR/LINE-families. Members of the Ty3/gypsy group of elements have not yet been identified in the nuclear genome of Arabidopsis. The varying degrees of similarity with nuclear elements and the dispersed locations of the sequences in the mitochondrial genome suggest numerous independent transfer-insertion events in the evolutionary history of this plant mitochondrial genome. Overall, we estimate remnants of retrotransposons to cover ≥5% of the mitochondrial genome in Arabidopsis.
- Published
- 1996