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Título: | Filling in the gaps of the papilionoid legume phylogeny: The enigmatic Amazonian genus Petaladenium is a new branch of the early-diverging Amburaneae clade |
Autor: | Cardoso, Domingos São-Mateus, Wallace Messias Barbosa Cruz, Daiane Trabuco da Zartman, Charles Eugene Komura, Dirce Leimi Kite, Geoffrey C. Prenner, Gerhard Wieringa, Jan J. Clark, Alexandra Lewis, Gwilym Peter Pennington, R. Toby Queiroz, Luciano P. |
Palavras-chave: | Aldina Cordyla Dipterygeae Dussia Fabaceae Leucomphalos Mildbraediodendron Myrospermum Papilionoidea Papilionoideae Sophoreae Swartzieae Dna, Plant Dna, Ribosomal Spacer Bayes Theorem Biological Model Central America Chemistry Classification Dna Sequence Fabaceae Genetics Intron North America Phylogeny Plant Leaf Plastid Bayes Theorem Central America Dna, Plant Dna, Ribosomal Spacer Fabaceae Introns Models, Genetic North America Phylogeny Plant Leaves Plastids Sequence Analysis, Dna |
Data do documento: | 2015 |
Revista: | Molecular Phylogenetics and Evolution |
É parte de: | Volume 84, Pags. 112-124 |
Abstract: | Recent deep-level phylogenies of the basal papilionoid legumes (Leguminosae, Papilionoideae) have resolved many clades, yet left the phylogenetic placement of several genera unassessed. The phylogenetically enigmatic Amazonian monospecific genus Petaladenium had been believed to be close to the genera of the Genistoid Ormosieae clade. In this paper we provide the first DNA phylogenetic study of Petaladenium and show it is not part of the large Genistoid clade, but is a new branch of the Amburaneae clade, one of the first-diverging lineages of the Papilionoideae phylogeny. This result is supported by the chemical observation that the quinolizidine alkaloids, a chemical synapomorphy of the Genistoids, are absent in Petaladenium. Parsimony and Bayesian phylogenetic analysis of nuclear ITS/5.8S and plastid matK and trnL intron agree with a new interpretation of morphology that Petaladenium is sister to Dussia, a genus comprising ~18 species of trees largely confined to rainforests in Central America and northern South America. Petaladenium, Dussia, and Myrospermum have papilionate flowers in a clade otherwise with radial floral symmetry, loss of petals or incompletely differentiated petals. Our phylogenetic analyses also revealed well-supported resolution within the three main lineages of the ADA clade (Angylocalyceae, Dipterygeae, and Amburaneae). We also discuss further molecular phylogenetic evidence for the undersampled Amazonian genera Aldina and Monopteryx, and the tropical African Amphimas, Cordyla, Leucomphalos, and Mildbraediodendron. © 2015 Elsevier Inc. |
DOI: | 10.1016/j.ympev.2014.12.015 |
Aparece nas coleções: | Artigos |
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