Non-monophyly of the woody bamboos (Bambuseae; Poaceae): a multi-gene region phylogenetic analysis of Bambusoideae s.s. |
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Authors: | Sarawood Sungkaew Chris M A Stapleton Nicolas Salamin Trevor R Hodkinson |
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Institution: | (1) Department of Forest Biology, Faculty of Forestry, Kasetsart University, Bangkok, Thailand;(2) Department of Botany, School of Natural Sciences, Trinity College Dublin, University of Dublin, Dublin 2, Ireland;(3) Royal Botanic Gardens Kew, Richmond, Surrey, TW9 3DS, UK;(4) Department of Ecology and Evolution, Biophore, University of Lausanne, 1015 Lausanne, Switzerland |
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Abstract: | The taxonomy of Bambusoideae is in a state of flux and phylogenetic studies are required to help resolve systematic issues.
Over 60 taxa, representing all subtribes of Bambuseae and related non-bambusoid grasses were sampled. A combined analysis
of five plastid DNA regions, trnL intron, trnL-F intergenic spacer, atpB-rbcL intergenic spacer, rps16 intron, and matK, was used to study the phylogenetic relationships among the bamboos in general and the woody bamboos in particular. Within
the BEP clade (Bambusoideae s.s., Ehrhartoideae, Pooideae), Pooideae were resolved as sister to Bambusoideae s.s. Tribe Bambuseae,
the woody bamboos, as currently recognized were not monophyletic because Olyreae, the herbaceous bamboos, were sister to tropical
Bambuseae. Temperate Bambuseae were sister to the group consisting of tropical Bambuseae and Olyreae. Thus, the temperate
Bambuseae would be better treated as their own tribe Arundinarieae than as a subgroup of Bambuseae. Within the tropical Bambuseae,
neotropical Bambuseae were sister to the palaeotropical and Austral Bambuseae. In addition, Melocanninae were found to be
sister to the remaining palaeotropical and Austral Bambuseae. We discuss phylogenetic and morphological patterns of diversification
and interpret them in a biogeographic context. |
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Keywords: | trnL-F atpB-rbcL rps16 matK Bambusoideae Woody bamboos |
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