Abstract:
:The growth of phylogenetic trees in scope and in size is promising from the standpoint of understanding a wide variety of evolutionary patterns and processes. With trees comprised of larger, older, and globally distributed clades, it is likely that the lability of a binary character will differ significantly among lineages, which could lead to errors in estimating transition rates and the associated inference of ancestral states. Here we develop and implement a new method for identifying different rates of evolution in a binary character along different branches of a phylogeny. We illustrate this approach by exploring the evolution of growth habit in Campanulidae, a flowering plant clade containing some 35,000 species. The distribution of woody versus herbaceous species calls into question the use of traditional models of binary character evolution. The recognition and accommodation of changes in the rate of growth form evolution in different lineages demonstrates, for the first time, a robust picture of growth form evolution across a very large, very old, and very widespread flowering plant clade.
journal_name
Syst Bioljournal_title
Systematic biologyauthors
Beaulieu JM,O'Meara BC,Donoghue MJdoi
10.1093/sysbio/syt034subject
Has Abstractpub_date
2013-09-01 00:00:00pages
725-37issue
5eissn
1063-5157issn
1076-836Xpii
syt034journal_volume
62pub_type
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