Island species radiation and karyotypic stasis in Pachycladon allopolyploids

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Authors

MANDÁKOVÁ Terezie HEENAN Peter LYSÁK Martin

Year of publication 2010
Type Article in Periodical
Magazine / Source BMC Evolutionary Biology
MU Faculty or unit

Faculty of Science

Citation
Field Genetics and molecular biology
Keywords genome evolution; karyotype evolution; island speciation; Brassicaceae; comparative chromosome painting; polyploidy
Description The paper reports on karyotype and genome evolution in the New Zealand genus Pachycladon (Brassicaceae). Karyotypic stasis in Pachycladon suggests that the insular species radiation in this genus proceeded through homoploid divergence rather than through species-specific gross chromosomal repatterning. The ancestral Pachycladon genome originated in Australia through an allopolyploidization event involving two closely related parental genomes, and spread to New Zealand by a long-distance dispersal.
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