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Repetitive DNA Restructuring Across Multiple Nicotiana Allopolyploidisation Events Shows a Lack of Strong Cytoplasmic Bias in Influencing Repeat Turnover.
Allopolyploidy is acknowledged as an important force in plant evolution. Frequent allopolyploidy in Nicotiana across different timescales permits the evaluation of genome restructuring and repeat dynamics through time. ...
The Welwitschia genome reveals a unique biology underpinning extreme longevity in deserts
The gymnosperm Welwitschia mirabilis belongs to the ancient, enigmatic gnetophyte lineage. It is a unique desert plant with extreme longevity and two ever-elongating leaves. We present a chromosome-level assembly of its ...
Genome downsizing after polyploidy: mechanisms, rates and selection pressures.
An analysis of over 10,000 plant genome sizes (GS) indicate that most species have smaller genomes than expected given the incidence of polyploidy in their ancestries, suggesting selection for genome downsizing. However, ...
Exploring environmental selection on genome size in angiosperms.
Angiosperms show a remarkable range in genome size (GS), yet most species have small genomes, despite the frequency of polyploidy and repeat amplification in the ancestries of most lineages. It has been suggested that ...
Microsatellites and petal morphology reveal new patterns of admixture in Orchis hybrid zones
The genetic structure of hybrid zones provides insight into the potential for gene flow to occur between plant taxa. Four closely related European orchid species (Orchis anthropophora, O. militaris, O. purpurea, and O. ...
The correlation of phylogenetics, elevation and ploidy on the incidence of apomixis in Asteraceae in the European Alps
(Linnean Society of London, 2020-08-27)