期刊
MOLECULAR PHYLOGENETICS AND EVOLUTION
卷 78, 期 -, 页码 105-117出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2014.04.012
关键词
Neotropical grasses; Olyreae; Phylogenetic relationships; ITS; tmD-tmT; Incongruence
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, Brazil (CNPq) [478901/2008-9, 562349/2010-3, 563558/2010-5]
- Fundacao de Amparo a Pesquisa do Estado da Bahia (FAPESB) [PNX0014/2009, PNE0020/2011]
- American Society of Plant Taxonomists
- KLARF Programme (Royal Botanic Gardens, Kew)
- CNPq [PQ2, PQ1C, PQ1B]
The plastid spacer trnD-trnT and the nuclear ribosomal internal transcribed spacer (ITS) were sequenced for 37 samples of herbaceous bamboos (Poaceae: Olyreae), including all Raddia species and allied genera, as well as two members of the woody bamboos (tribes Bambuseae and Arundinarieae), in order to examine their relationships. The sequences were analyzed using maximum parsimony and Bayesian inference. Both the individual and combined analyses of ITS and trnD-trnT supported Olyreae as a monophyletic group. All species of Raddia also formed a well-supported monophyletic group, and combined datasets allowed us to outline some relationships within this group. Individual analyses indicated incongruence regarding the sister group of Raddia, with ITS data weakly indicating Raddiella malmeana whereas trnD-trnT data supported Sucrea maculata in this position. However, the combined analysis supported Sucrea as sister to Raddia, although the monophyly of Sucrea is not well supported. Parodiolyra is paraphyletic to Raddiella in all analyses; Olyra is also paraphyletic, with species of Lithachne, Arberella and Cryptochloa nested within it. Eremitis and Pariana appeared as an isolated clade within Olyreae, and the position of the New Guinean Buergersiochloa remains uncertain within this tribe. (C) 2014 Elsevier Inc. All rights reserved.
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