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Elucidating Phylogenetic Relationships in the <I>Aechmea</I> Alliance: AFLP Analysis of <I>Portea</I> and the <I>Gravisia</I> Complex (Bromeliaceae, Bromelioideae)

2015; American Society of Plant Taxonomists; Volume: 40; Issue: 3 Linguagem: Inglês

10.1600/036364415x689177

1548-2324

Sascha Heller, Elton M. C. Leme, Katharina Schulte, Ana Maria Benko‐Iseppon, Georg Zizka,

Plant and animal studies

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 indi...