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.
Related projects:	Molecular and cytogenetic analysis of the giant genomes of Fritillaria (Liliaceae)