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Henrik Balslev

Phylogenetics of Iriarteeae (Arecaceae), cross-Andean disjunctions and convergence of clustered infructescence morphology in Wettinia

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DOI

  • Christine D. Bacon, University of Gothenburg, Univ Ind Santander, Universidad Industrial de Santander, CINBIN, Lab Biol Mol
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  • Francisco Velasquez-Puentes, Univ Ind Santander, Universidad Industrial de Santander, CINBIN, Lab Biol Mol
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  • Alexander Florez-Rodriguez, Univ Copenhagen, University of Copenhagen, Nat Hist Museum Denmark, Ctr Macroecol Evolut & Climate
  • ,
  • Henrik Balslev
  • Gloria Galeano, Univ Nacl Colombia, Universidad Nacional de Colombia, Inst Ciencias Nat
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  • Rodrigo Bernal, Univ Nacl Colombia, Universidad Nacional de Colombia, Inst Ciencias Nat
  • ,
  • Alexandre Antonelli, University of Gothenburg, Gothenburg Bot Garden

The Neotropical palm tribe Iriarteeae is ubiquitous in several lowland and montane biomes across northern South America, but the phylogenetic relationships among genera and species remain unresolved. A well resolved phylogenetic tree is key to exploring morphological evolution in the tribe, including striking features such as the complex and unique inflorescence structures in Wettinia. We generated data from five plastid (ndhA, petD-rpoA, psbK-trnS and trnG) and six nuclear (AG1, CISPs 4 and 5, PRK, RPB2 and WRKY21) molecular loci to infer the phylogeny. We explored the evolutionary patterns of trait evolution using the D statistic and stochastic character mapping. All genera were inferred as monophyletic and their relationships were recovered with strong to moderate support. Based on these results we synonymize the two species of Iriartella under I. setigera and resurrect Socratea montana from S. rostrata. Interspecific relationships were mostly consistent with current morphological classification. One exception concerns trait evolution in Wettinia, in which the clustered infructescence was found to have evolved at least four times. Phylogenetic signal for this trait was weak and randomly distributed across the tree, probably representing convergence. Our results provide a robust phylogenetic framework for Iriarteeae, largely corroborating current morphological classification and laying the groundwork for macroevolutionary studies in the tribe. (C) 2016 The Linnean Society of London.

Original languageEnglish
JournalBotanical Journal of the Linnean Society
Volume182
Issue2
Pages (from-to)272-286
Number of pages15
ISSN0024-4074
DOIs
Publication statusPublished - Oct 2016
EventWorld Palms Sympsoium - Quindio, Colombia
Duration: 1 Jan 2015 → …

Conference

ConferenceWorld Palms Sympsoium
CountryColombia
CityQuindio
Period01/01/2015 → …

    Research areas

  • Andes, character evolution, infructescence, Neotropics, palms, South America, DIVERSIFICATION PATTERNS, PALMS ARECACEAE, NUCLEAR GENES, EVOLUTION, SEQUENCES, CLASSIFICATION, HYPERDOMINANCE, BIODIVERSITY, ALIGNMENT, BIOLOGY

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