Punctuated genome size evolution in Liliaceae

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Authors

LEITCH I.J. BEAULIEU J.M. CHEUNG K. HANSON L. LYSÁK Martin FAY M.F.

Year of publication 2007
Type Article in Periodical
Magazine / Source J EVOLUTION BIOL
MU Faculty or unit

Faculty of Science

Citation
Field Genetics and molecular biology
Keywords C-value; evolution; evolutionary trends; Fritillaria; genome size; Liliaceae; punctuated evolution
Description To gain insights into when and where genome size expansion took place during the evolution of Liliaceae and the mode and tempo of this change, data for 78 species were superimposed onto a phylogenetic tree and analysed. Results suggest that genome size in Liliaceae followed a punctuated rather than gradual mode of evolution and that most of the diversification evolved recently rather than early in the evolution of the family. We consider that the large genome sizes of Liliaceae may have emerged passively rather than being driven primarily by selection.
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