O gênero Rhynchosia (Leguminosae, Papilionoideae, Phaseoleae) no Brasil

Bezerra, Luísa Maria de Paula Alves; Candido, Elisa; Vargas, Wanderleia de; Servilha, João Henrique; Monteiro, Thiago Cobra e; Perez, Ana Paula Fortuna

doi:10.1590/2175-7860201970058

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Desv. (Cândido et al 2014, Cândido et al 2016, Fortuna-Perez et al 2017 e Rhynchosia (Bezerra et al 2019b, Bezerra et al 2019c.…”

Section: Introductionmentioning

confidence: 99%

A tribo Phaseoleae s.l. (Leguminosae-Papilionoideae) no município de Caetité, Estado da Bahia, Brasil

Teixeira¹,

Ferreira²,

Silva³

2021

Hoehnea

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RESUMO (A tribo Phaseoleae s.l. (Leguminosae-Papilionoideae) no município de Caetité, Estado da Bahia, Brasil). Phaseoleae s.l. é a maior tribo de Papilionoideae em número de gêneros, com 89 e 1.567 espécies. Os estudos taxonômicos regionais da tribo são pontuais no Brasil e raros no Nordeste do Brasil, incluindo a Bahia, o Estado mais rico em espécies da região. Neste contexto, este trabalho teve como objetivo realizar o tratamento taxonômico das espécies de Phaseoleae s.l. ocorrentes em Caetité (BA), uma região de prioridade de conservação para a vegetação de Caatinga. Para tanto, foram realizadas expedições de coleta e visitas aos Herbários HUNEB-Coleção Caetité e HUEFS. Um total de 25 espécies e 15 gêneros foi registrado, o que representa 23% das espécies registradas para a Bahia. Caetité destaca-se como um dos principais centros de riqueza florística de Phaseoleae s.l. no semiárido baiano. O formato dos folíolos, tipo de inflorescência e a coloração das pétalas e das sementes são os caracteres mais úteis na identificação dos táxons.

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“…Desv. (Cândido et al 2014, Cândido et al 2016, Fortuna-Perez et al 2017 e Rhynchosia (Bezerra et al 2019b, Bezerra et al 2019c.…”

Section: Introductionmentioning

confidence: 99%

A tribo Phaseoleae s.l. (Leguminosae-Papilionoideae) no município de Caetité, Estado da Bahia, Brasil

Teixeira¹,

Ferreira²,

Silva³

2021

Hoehnea

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Rhynchosia mineira (Leguminosae: Papilionoideae), a new and critically endangered species from Minas Gerais, Brazil

et al. 2019

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

Candido

Vatanparast

Vargas

et al. 2020

Botanical Journal of the Linnean Society

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Eriosema 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.

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O gênero Rhynchosia (Leguminosae, Papilionoideae, Phaseoleae) no Brasil

Cited by 3 publications

References 5 publications

A tribo Phaseoleae s.l. (Leguminosae-Papilionoideae) no município de Caetité, Estado da Bahia, Brasil

A tribo Phaseoleae s.l. (Leguminosae-Papilionoideae) no município de Caetité, Estado da Bahia, Brasil

Rhynchosia mineira (Leguminosae: Papilionoideae), a new and critically endangered species from Minas Gerais, Brazil

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

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