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Abstract Detail

Systematics Section/ASPT

Terra, Vanessa [1], Miller, Joe [2], Garcia, Flávia [3], De Queiroz, Luciano Paganucci [4].

Phylogeny of Senegalia Raf. (Leguminosae- Mimosoideae) species in Brazil.

Senegalia Raf. is a genus characterized by bipinnate leaves, presence of petiolar nectaries, prickles on the branches and pollen grains arranged in polyads with 16 grains. Senegalia has a pantropical distributon with centers of richness in Brazil, Mexico and Africa. Morphology is an important tool in taxonomy but it is not sufficient to solve the taxonomic issues and elucidate the evolutionary history of this genus. Prior molecular analyses of Mimosoideae have lacked breadth of sampling within Senegalia, leaving relationships uncertain. The aim of this study was to test the monophyly of Brazilian species, investigate biogeographical patterns and morphological character evolution of Senegalia. We sequenced four plastid and one nuclear DNA (ITS) regions for 160 samples of 66 Senegalia species. Bayesian analyses indicate that the Brazilian species are monophyletic with three well-supported lineages within it. One of these clades, consisting of relatively short branches, contains taxa with a liana growth form. Species with large leaflets form a clade sister to a clade of small leaflets species. Preliminary analysis suggests that the Mexican species form a clade sister to the Brazilian clade with the African species sister to this American clade. The authors wish to thank the financial support granted by Capes, CNPq, Fapemig, Fapesb, CSIRO and PPG-Botânica-UFV.

Broader Impacts:

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1 - Universidade Federal de Viçosa, Departamento de Biologia Vegetal, Ph Rolfs sn, Centro, Viçosa, MG, 36570-000, Brasil
2 - Centre For Australian National Biodiversity Research, GPO Box 1600, Canberra, N/A, 2601, Australia
3 - Universidade Federal de Viçosa, Departamento de Biologia Vegetal, Ph Rolfs sn, Viçosa, MG, 36570-000, Brasil
4 - Universidade Estadual De Feira De Santana, Departamento De Ciências Biológicas, HERBÁRIO, Av. Transnordestina S/n, Novo Horizonte, Feira De Santana, BA, N/A, 44036-900, Brazil


Presentation Type: Oral Paper:Papers for Sections
Session: 5
Location: Rosedown/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 10:45 AM
Number: 5009
Abstract ID:510
Candidate for Awards:None

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