Molecular phylogenetic insights into the evolution of Eriosema (Fabaceae): a recent tropical savanna-adapted genus

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dc.creatorCândido, Elisa Silva
dc.creatorVatanparast, Mohammad
dc.creatorVargas, Wanderleia de
dc.creatorBezerra, Luisa Maria de Paula Alves
dc.creatorLewis, Gwilym Peter
dc.creatorMansano, Vidal de Freitas
dc.creatorSimões, André Olmos
dc.creatorSilva, Marcos José da
dc.creatorStirton, Charles Howard
dc.creatorTozzi, Ana Maria Goulart de Azevedo
dc.creatorFortuna-Perez, Ana Paula
dc.date.accessioned2025-03-18T20:05:19Z
dc.date.available2025-03-18T20:05:19Z
dc.date.issued2020-12
dc.description.abstractEriosema comprises c. 150 species and has a pantropical distribution and two centres of diversity, Africa and America. The species occur in tropical savannas and grasslands, including the cerrado in Brazil. They have adapted to these environments by developing specialized underground organs, and an abundance of trichomes. Here we present the first comprehensive molecular phylogenetic analysis of Eriosema, including species from its entire distribution range and generating 391 new DNA sequences. We sampled 140 species from nine genera of Cajaninae, of which 94 (60% of the genus) were Eriosema. Our analyses were based on the nuclear ITS and plastid rpl32 and trnQ regions, and used maximum likelihood and Bayesian phylogenetic analyses of individual and combined data sets. In all analyses, Eriosema was resolved as monophyletic, but its interspecific relationships are not well resolved. Rhynchosia is not monophyletic, and some African Rhynchosia spp. emerged together as sister to Eriosema. Our study supports the monophyly of Adenodolichos, Dunbaria, Flemingia and Cajanus, but Chrysoscias and Bolusafra formed a clade that is sister to a group of Rhynchosia spp. Paracalyx was resolved as paraphyletic and nested among African Rhynchosia spp. Divergence time analysis suggested that the Eriosema lineages diverged 6.5–10.7 Mya. Two major lineages have diversified in Eriosema, one including most of the African species (4.41–6.68 Mya), the other mainly composed of the South American cerrado species (3.56–5.78 Mya). These results revealed that Eriosema is a recent and tropical savanna-adapted group, and its diversification occurred in the late Miocene in parallel with the expansion of C4 grasslands.
dc.identifier.citationCÂNDIDO, Elisa Silva et al. Molecular phylogenetic insights into the evolution of Eriosema (Fabaceae): a recent tropical savanna-adapted genus. Botanical Journal of the Linnean Society, [s. l.], v. 194, n. 4, p. 439–459, 2020. DOI: 10.1093/botlinnean/boaa059. Disponível em: https://academic.oup.com/botlinnean/article/194/4/439/5890103. Acesso em: 14 jan. 2025.
dc.identifier.doi10.1093/botlinnean/boaa059
dc.identifier.issn0024-4074
dc.identifier.issne- 1095-8339
dc.identifier.urihttp://repositorio.bc.ufg.br//handle/ri/27007
dc.language.isoeng
dc.publisher.countryGra-bretanha
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RMG)
dc.rightsAcesso Aberto
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCajaninae
dc.subjectCerrado
dc.subjectDivergence time
dc.subjectGrassland
dc.subjectLeguminosae
dc.subjectRecent diversification
dc.subjectRhynchosia
dc.subjectSystematics
dc.titleMolecular phylogenetic insights into the evolution of Eriosema (Fabaceae): a recent tropical savanna-adapted genus
dc.typeArtigo

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