title: A molecular phylogeny of Raddia and its allies within the tribe Olyreae (Poaceae, Bambusoideae) based on noncoding plastid and nuclear spacers.
abstract: 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.
authors.affiliation: Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Av. Transnordestina s.n., Feira de Santana, Bahia 44031-460, Brazil. Electronic address: reyjanepatricia@hotmail.com.
authors.forename: Reyjane P
authors.initials: RP
authors.lastname: Oliveira
authors.affiliation: Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA 50011-1020, USA. Electronic address: lgclark@iastate.edu.
authors.forename: Lynn G
authors.initials: LG
authors.lastname: Clark
authors.affiliation: Instituto de Biologia, Universidade Federal da Bahia, Av. Barão de Geremoabo s.n., Ondina, Salvador, Bahia 40150-170, Brazil. Electronic address: alessandra.schnadelbach@gmail.com.
authors.forename: Alessandra S
authors.initials: AS
authors.lastname: Schnadelbach
authors.affiliation: Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 950, Herbário, Rio de Janeiro, Rio de Janeiro 22460-030, Brazil. Electronic address: shnmonteiro@gmail.com.
authors.forename: Silvana H N
authors.initials: SH
authors.lastname: Monteiro
authors.affiliation: Universidade Federal do ABC, Centro de Ciências Naturais e Humanas, Rua Santa Adélia, 166, Santo André, São Paulo 09210170, Brazil. Electronic address: eduardo.borba@ufabc.edu.br.
authors.forename: Eduardo L
authors.initials: EL
authors.lastname: Borba
authors.affiliation: Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, Rio Grande do Sul 91501-970, Brazil. Electronic address: hmlwagner@gmail.com.
authors.forename: Hilda M
authors.initials: HM
authors.lastname: Longhi-Wagner
authors.affiliation: Universidade Estadual de Feira de Santana, Departamento de Ciências Biológicas, Av. Transnordestina s.n., Feira de Santana, Bahia 44031-460, Brazil. Electronic address: vcassio@gmail.com.
authors.forename: Cassio
authors.initials: C
authors.lastname: van den Berg
mesh_terms: D001499:Bayes Theorem; D018744:DNA, Plant / Q000737:chemistry; D021903:DNA, Ribosomal Spacer / Q000737:chemistry; D010802:Phylogeny; D018087:Plastids / Q000235:genetics; D006109:Poaceae / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics; D017422:Sequence Analysis, DNA
chemical_list: D018744:DNA, Plant; D021903:DNA, Ribosomal Spacer
keywords: ITS; Incongruence; Neotropical grasses; Olyreae; Phylogenetic relationships; trnD-trnT