<i>Viburnum</i> phylogeny based on combined molecular data: Implications for taxonomy and biogeography

TitleViburnum phylogeny based on combined molecular data: Implications for taxonomy and biogeography
Publication TypeJournal Article
Year of Publication2005
AuthorsWinkworth RC, Donoghue MJ
JournalAmerican Journal of Botany
Volume92
Pagination653-666
ISSN00029122
KeywordsBiological Sciences, Botany & Plant Sciences
Abstract

We investigated Viburnum phylogeny using separate and combined analyses of DNA sequence data from two chloroplast and three nuclear loci. Separate analyses of nuclear and chloroplast data sets resulted in gene trees that were generally congruent with one another and with trees from two previous analyses. Our gene trees do differ in the position of section Pseudotinus, as well as in species relationships within sections Pseudotinus and Lentago. However, tests for incongruence indicate that differences between the nuclear and chloroplast data are not significant. Furthermore, gene trees from combined analyses were highly similar to those found in separate analyses, suggesting that these localized differences do not affect other parts of the tree. Our analyses provide convincing support for numerous relationships, although there is still uncertainty at the base of the tree. To facilitate future study, we propose informal names for 12 well-supported species groups, as well as for several

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