Title
Phylogenetic networks do not need to be complex: using fewer reticulations to represent conflicting clusters.
Abstract
Phylogenetic trees are widely used to display estimates of how groups of species are evolved. Each phylogenetic tree can be seen as a collection of clusters, subgroups of the species that evolved from a common ancestor. When phylogenetic trees are obtained for several datasets (e.g. for different genes), then their clusters are often contradicting. Consequently, the set of all clusters of such a dataset cannot be combined into a single phylogenetic tree. Phylogenetic networks are a generalization of phylogenetic trees that can be used to display more complex evolutionary histories, including reticulate events, such as hybridizations, recombinations and horizontal gene transfers. Here, we present the new CASS algorithm that can combine any set of clusters into a phylogenetic network. We show that the networks constructed by CASS are usually simpler than networks constructed by other available methods. Moreover, we show that CASS is guaranteed to produce a network with at most two reticulations per biconnected component, whenever such a network exists. We have implemented CASS and integrated it into the freely available Dendroscope software.
Year
DOI
Venue
2010
10.1093/bioinformatics/btq202
BIOINFORMATICS
Keywords
DocType
Volume
phylogenetic tree,horizontal gene transfer,phylogenetic network,cluster analysis,phylogeny,algorithms
Journal
26
Issue
ISSN
Citations 
12
1367-4803
9
PageRank 
References 
Authors
0.58
9
4
Name
Order
Citations
PageRank
Leo van Iersel121524.58
Steven Kelk219325.60
Regula Rupp31045.47
Daniel H. Huson476591.20