Disentangling knots of rapid evolution: origin and diversification of the moss order Hypnales

摘要: AbstractThe Hypnales are the largest order of mosses comprising approximately 4200 species. Phylogenetic reconstruction within group has proven to be difficult due rapid radiation at an early stage evolution and, consequently, relationships among clades have remained poorly resolved. We compiled data from four sequence regions, namely, nuclear ITS1–5·8S–ITS2, plastid trnL–F and rps4, mitochondrial nad5, for 122 hypnalean species 34 closely related groups. Tree topologies both Bayesian parsimony analyses resolve as monophyletic. Although inferences were made fast-evolving genes, despite strong phylogenetic signal in ITS1–5·8S–ITS2 data, monophyly, well backbone nodes Hypnales, remains rather supported except under inferences. Ancestral distribution based on dispersal-vicariance analysis supports a Gondwanan origin subsequent geographical area former La...