Claim · model-written summary
Emarginata evolution was associated with gradual elimination of D genome repeats.
Not reportedTaxonMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Verbatim
e0“a gradual elimination of all D-genome-specific repeats”
Title
Evolution of the S-genome in Triticum and Aegilops
Plant Genetics, Genomics, Bioinformatics, and Biotechnology (PlantGen2019) The Fifth International Scientific Conference 2019. doi:10.18699/plantgen2019-017
Other claims from this paper (13)
- Observation Diploid species split into Emarginata and Truncata groups with different chromosome patterns and repeat distributions.
- Observation Polyploid wheat B and G genomes most resembled the S genome of Ae. speltoides.
- Mechanism Allopolyploid wheat genomes evolved through species-specific translocations and repeat sequence changes independent of Ae. speltoides.
- Observation The 5S rDNA locus on chromosome 1S was probably lost in ancient Ae. speltoides before Timopheevii wheat formed.
- Association Emarginata evolution was associated with increases in heterochromatin.
- Association Emarginata evolution was associated with amplification of Spelt-52.
- Association Emarginata evolution was associated with repatterning of pAesp_SAT86.
- Observation The emergence of Ae. variabilis did not significantly change the parental S* genome.
- Observation The emergence of Ae. kotschyi did not significantly change the parental S* genome.
- Observation Both tetraploid species showed partial elimination of 45S rDNA repeats.
- Observation Both tetraploid species showed altered C-banding and FISH patterns.
- Observation Similarity between Ae. vavilovii and Ae. searsii S genomes confirmed the hexaploid origin.
- Method / resource The authors suggested a model of S-genome evolution.