@ARTICLE{TreeBASE2Ref19033, author = {Rong Li and Jun Wen}, title = {Phylogeny and Biogeography of Dendropanax (Araliaceae), an Amphi-Pacific Disjunct Genus between Tropical/Subtropical Asia and the Neotropics}, year = {2010}, keywords = {amphi-Pacific tropical disjunction, Araliaceae, biogeography, Dendropanax, phylogeny}, doi = {}, url = {http://}, pmid = {}, journal = {Systematic Botany}, volume = {}, number = {}, pages = {}, abstract = {Dendropanax (Araliaceae) is a genus of about 75-80 species disjunctly distributed in tropical to subtropical Asia and the neotropics with an amphi-Pacific tropical disjunction. The phylogeny of the genus was constructed with the sampling of 95 accessions representing 33 species of Dendropanax and 43 closely related taxa employing sequences of the nuclear ribosomal internal transcribed spacer (ITS) region, and six plastid regions (the ndhF gene, the trnL-F region, the rps16 intron, the atpB-rbcL intergenic spacer, the rpl16 intron, and the psbA-trnH intergenic spacer). Phylogenetic analyses of the combined plastid and ITS data suggested that the monophyly of Dendropanax was not supported because the Asian D. lancifolius - D. hainanensis clade did not group with the main Dendropanax clade. Nevertheless, the maximally parsimonious trees (MPTs) from the analysis constraining Dendropanax as a monophyletic group were only one step longer than the unconstrained MPTs. The New World and the Old World Dendropanax except D. lancifolius and D. hainanensis each formed a robustly supported clade sister to each other. Based on biogeographic analyses and fossil-calibrated Bayesian dating, Dendropanax was hypothesized to have originated in the Old World and migrated into the New World via the North Atlantic land bridges in the early Tertiary. The amphi-Pacific intercontinental disjunction of Dendropanax was estimated to be 41.83 mya with 95% high posterior density [HPD] interval of 28.46-56.15 mya. The crown New World clade of Dendropanax was estimated at 27.43 mya (95% HPD: 17.56-38.47 mya) and the crown Old World clade was dated to be at 24.92 mya (95% HPD: 14.75-35.65 mya). The diversification in Central and South America was perhaps driven by the uplift of the northern Andes and the rising of the volcanic islands between South America and Central America in the late Tertiary. The diversification in the Old World was centered in southern China and Indochina, corresponding to the active orogenies in continental Asia due to the uplift of the Himalaya and the subsequent climatic changes in the region in the late Tertiary.} }

• Go to search
• Citation
• Taxa
• Matrices
• Trees
• Analyses
• 

CiteULike

Delicious

Connotea