Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/15416
Title: Filling in the gaps of the papilionoid legume phylogeny: The enigmatic Amazonian genus Petaladenium is a new branch of the early-diverging Amburaneae clade
Authors: 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.
Keywords: 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
Issue Date: 2015
metadata.dc.publisher.journal: Molecular Phylogenetics and Evolution
metadata.dc.relation.ispartof: 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.
metadata.dc.identifier.doi: 10.1016/j.ympev.2014.12.015
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