Phylogenetic relationships among Arundinaria and its allies in East Asia were further explored using AFLP data in conjunction with a four-region plastid framework phylogeny, with an emphasis on species-level relationships in the genus Pleioblastus sensu stricto. Hybridization and introgression were detected both within and among genera, highlighting the significant role of reticulate evolution in temperate bamboo diversity. Molecular data confirmed the hybrid origin of Hibanobambusa, Semiarundinaria, and Sasaella, and also revealed the type species of Pseudosasa to be an intergeneric hybrid. Moreover, cryptic links were detected between Sasa and Sasamorpha, resulting in nothotaxa that have obscured the distinction between these genera. AFLP and chloroplast sequence data support the monophyly of Pleioblastus s.s. and reveal species-level resolution in section Pleioblastus, low genetic diversity among populations of the widespread P. simonii (section Medakea), and cryptic reticulation among species in sections Nezasa and Medakea. This analysis also provided additional evidence for the monophyly of North American genus Arundinaria, but failed to reveal its closest relative. A significant conclusion of this research is that reticulate evolution has had an important role in the evolution of the temperate bamboos, in spite of the rarity of flowering.RADFORD, A.E., H.E. AHLES, AND C.R. BELL. 1968. Manual of the vascular flora of the Carolinas. University of North Carolina Press, Chapel Hill. RONQUIST , F., J.P. HUELSENBECK, AND P. VAN DER MARK. 2005. MrBayes 3.1 Manual.
|Title||:||Phylogenetic Relationships Among the Temperate Bamboos (Poaceae: Bambusoideae) with an Emphasis on Arundinaria and Allies|
|Author||:||Jimmy K. Triplett|
|Publisher||:||ProQuest - 2008|