Elucidating phylogenetic relationships in the Aechmea alliance: AFLP analysis of Portea and the Gravisia complex (Bromeliaceae, Bromelioideae)

Heller, Sascha, Leme, Elton M.C., Schulte, Katharina, Benko-Iseppon, Ana M., and Zizka, Georg (2015) Elucidating phylogenetic relationships in the Aechmea alliance: AFLP analysis of Portea and the Gravisia complex (Bromeliaceae, Bromelioideae). Systematic Botany, 40 (3). pp. 716-725.

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Abstract

Genetic concepts within the Bromelioideae are highly problematic, in particular within the tank-forming "core bromelioid" clade. Previous molecular studies showed that the largest genus, Aechmea, and allied genera are polyphyletic and require revision. Here we focus on one group within the Aechmea alliance, the Portea/Gravisia group. To assess whether species of this group form a distinct lineage within the core bromelioid clade, and to clarify generic limits and interspecific relationships within the group, we generated and analyzed amplified fragment length polymorphisms (AFLP). In total, 69 species were sampled, including 26 species previously assigned to the Portea/Gravisia group. Neighbor joining, maximum likelihood and Bayesian analyses of the AFLP data consistently retrieved the Portea/Gravisia group as a monophyletic clade with several subclades, comprising species from the genera Aechmea, Canistrum and Portea. The phylogenetic distribution of polyporate pollen of the resulting trees indicates this character state arose once within the core bromelioids and thus can be regarded as a synapomorphy for the Portea/Gravisia clade. Further, our study shows that within the Portea/Gravisia group, subclades are characterized by petal color and geographic distribution. Thus, the present study is a further advance in the challenging task of elucidating phylogenetic relationships within the core bromelioids as the basis for a revised taxonomy of this ecologically important group.

Item ID: 40716
Item Type: Article (Research - C1)
ISSN: 1548-2324
Keywords: Brazil, Canistrum, Nidularioids, phylogeny, pollen
Funders: Hermann Willkomm-Foundation, Hesse's Ministry of Higher Education, Research, and the Arts, Deutsche Forschungsgemeinschaft (DFG), Deutscher Akademischer Austauschdienst (DAAD), Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior (CAPES)
Projects and Grants: DFG ZI 557/6-2, DFG ZI 557/7-1, DFG SCHU 2426/1-1
Date Deposited: 06 Oct 2015 22:58
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060310 Plant Systematics and Taxonomy @ 40%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060309 Phylogeny and Comparative Analysis @ 40%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060302 Biogeography and Phylogeography @ 20%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960805 Flora, Fauna and Biodiversity at Regional or Larger Scales @ 100%
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