Impact of Fatima Retrotransposons on Wheat B-Genome Specificity
Author Information
Author(s): Fatima Salina, Ekaterina M. Sergeeva, Irina G. Adonina, Andrey B. Shcherban, Harry Belcram, Cecile Huneau, Boulos Chalhoub
Primary Institution: Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Science
Hypothesis
The study investigates how the gypsy LTR retrotransposons, specifically the Fatima family, affect the B-genome divergence in allopolyploid wheat.
Conclusion
The B-genome specificity of the gypsy-like Fatima is largely due to the emergence of a genome-specific element from its diploid progenitor, Ae. speltoides.
Supporting Evidence
- FISH analysis showed predominant localization of BAC_2383A24 to B-genome chromosomes.
- Phylogenetic analysis indicated that Fatima elements proliferated mainly in the diploid progenitor Ae. speltoides before allopolyploidy.
- BAC_2383A24 contains a high percentage of transposable elements, primarily LTR retrotransposons.
Takeaway
This study shows that certain genetic elements in wheat help it adapt and change over time, especially in the B-genome.
Methodology
The study used fluorescent in situ hybridization (FISH) and phylogenetic analysis to investigate the role of Fatima retrotransposons in wheat.
Digital Object Identifier (DOI)
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