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Registro Completo |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
10/11/2025 |
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Data da última atualização: |
17/11/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
INGLIS, P. W.; CUSTODIO, A. R.; SEIJO, J. G.; VALLS, J. F. M.; MORETZSOHN, M. de C. |
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Afiliação: |
PETER W. INGLIS; ADRIANA R. CUSTODIO; JOSÉ G. SEIJO, INSTITUTO DE BOTÁ NICA DEL NORDESTE (IBONE, UNNE-CONICET); JOSE FRANCISCO MONTENEGRO VALLS, CENARGEN; MARCIO DE CARVALHO MORETZSOHN, CENARGEN. |
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Título: |
A slow march along the South American Dry Diagonal: a multi-gene molecular phylogeny and biogeographical history of the peanut genus, Arachis L. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Annals of Botany, v. 136, p. 795-819, 2025. |
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DOI: |
https://doi.org/10.1093/aob/ mcaf139 |
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Idioma: |
Inglês |
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Notas: |
Na publicação: Marcio C. Moretzsohn. |
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Conteúdo: |
Background and aims: Arachis contains 84 accepted species, including peanut (Arachis hypogaea), all endemic to South America. To better understand evolutionary patterns in Arachis, we studied its phylogeny and biogeographical history. Methods: We sequenced ITS, ETS, psbA-trnH, rpoB-trnCGCA and ycf1 regions and constructed maximum likelihood trees based on aligned matrices and on a concatenation of all five regions. We then conducted a fossil-calibrated Bayesian phylogenetic analysis and a biogeographical analysis. Key results: We hypothesize that Arachis diverged from its sister Stylosanthes in the Middle Miocene, about 15 Ma, in the area now occupied by the Brazilian Caatinga and Northeastern Cerrado, accompanied by the innovation of geocarpy as a possible adaptation to increasing aridity. Arachis began to diversify about 10 Ma, and the deepest branching, and more species-poor lineages remain associated with the Caatinga. Expansion of two distinct lineages to the contiguous and nascent Cerrado occurred in the late Miocene by ∼7.4 and ∼5.5 Ma, respectively. The Cerrado remains the major centre of diversity of Arachis and is the area of progressive expansion of the genus along the broad corridor of the north-eastern-south-western Neotropical Dry Diagonal, during the late Miocene and Pliocene. Further Pliocene expansion of distinct Arachis lineages from the Cerrado to the Pantanal and Chaco regions are also hypothesized, where the latter two ecoregions are identified as secondary centres of diversification of the genus. Frequent diversifications occurred in section Arachis from the Middle Pleistocene (∼0.774 Ma), probably driven by climate change, and accompanied by expansion of distinct Cerrado lineages: two into the Chaco, comprising a subclade of A genome species and another of all K-genome species, and a third comprising a subset of B genome species into the Chiquitano. Conclusions: Our results clarify phylogenetic relationships in Arachis and provide a new framework to understand its evolutionary history. MenosBackground and aims: Arachis contains 84 accepted species, including peanut (Arachis hypogaea), all endemic to South America. To better understand evolutionary patterns in Arachis, we studied its phylogeny and biogeographical history. Methods: We sequenced ITS, ETS, psbA-trnH, rpoB-trnCGCA and ycf1 regions and constructed maximum likelihood trees based on aligned matrices and on a concatenation of all five regions. We then conducted a fossil-calibrated Bayesian phylogenetic analysis and a biogeographical analysis. Key results: We hypothesize that Arachis diverged from its sister Stylosanthes in the Middle Miocene, about 15 Ma, in the area now occupied by the Brazilian Caatinga and Northeastern Cerrado, accompanied by the innovation of geocarpy as a possible adaptation to increasing aridity. Arachis began to diversify about 10 Ma, and the deepest branching, and more species-poor lineages remain associated with the Caatinga. Expansion of two distinct lineages to the contiguous and nascent Cerrado occurred in the late Miocene by ∼7.4 and ∼5.5 Ma, respectively. The Cerrado remains the major centre of diversity of Arachis and is the area of progressive expansion of the genus along the broad corridor of the north-eastern-south-western Neotropical Dry Diagonal, during the late Miocene and Pliocene. Further Pliocene expansion of distinct Arachis lineages from the Cerrado to the Pantanal and Chaco regions are also hypothesized, where the latter two ecoregions are identified as second... Mostrar Tudo |
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Palavras-Chave: |
ETS; ITS; Phylogenetics; Plastid regions. |
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Thesaurus Nal: |
Arachis; Biogeography; South America. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02911naa a2200277 a 4500
001 2181313
005 2025-11-17
008 2025 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1093/aob/ mcaf139$2DOI
100 1 $aINGLIS, P. W.
245 $aA slow march along the South American Dry Diagonal$ba multi-gene molecular phylogeny and biogeographical history of the peanut genus, Arachis L.$h[electronic resource]
260 $c2025
500 $aNa publicação: Marcio C. Moretzsohn.
520 $aBackground and aims: Arachis contains 84 accepted species, including peanut (Arachis hypogaea), all endemic to South America. To better understand evolutionary patterns in Arachis, we studied its phylogeny and biogeographical history. Methods: We sequenced ITS, ETS, psbA-trnH, rpoB-trnCGCA and ycf1 regions and constructed maximum likelihood trees based on aligned matrices and on a concatenation of all five regions. We then conducted a fossil-calibrated Bayesian phylogenetic analysis and a biogeographical analysis. Key results: We hypothesize that Arachis diverged from its sister Stylosanthes in the Middle Miocene, about 15 Ma, in the area now occupied by the Brazilian Caatinga and Northeastern Cerrado, accompanied by the innovation of geocarpy as a possible adaptation to increasing aridity. Arachis began to diversify about 10 Ma, and the deepest branching, and more species-poor lineages remain associated with the Caatinga. Expansion of two distinct lineages to the contiguous and nascent Cerrado occurred in the late Miocene by ∼7.4 and ∼5.5 Ma, respectively. The Cerrado remains the major centre of diversity of Arachis and is the area of progressive expansion of the genus along the broad corridor of the north-eastern-south-western Neotropical Dry Diagonal, during the late Miocene and Pliocene. Further Pliocene expansion of distinct Arachis lineages from the Cerrado to the Pantanal and Chaco regions are also hypothesized, where the latter two ecoregions are identified as secondary centres of diversification of the genus. Frequent diversifications occurred in section Arachis from the Middle Pleistocene (∼0.774 Ma), probably driven by climate change, and accompanied by expansion of distinct Cerrado lineages: two into the Chaco, comprising a subclade of A genome species and another of all K-genome species, and a third comprising a subset of B genome species into the Chiquitano. Conclusions: Our results clarify phylogenetic relationships in Arachis and provide a new framework to understand its evolutionary history.
650 $aArachis
650 $aBiogeography
650 $aSouth America
653 $aETS
653 $aITS
653 $aPhylogenetics
653 $aPlastid regions
700 1 $aCUSTODIO, A. R.
700 1 $aSEIJO, J. G.
700 1 $aVALLS, J. F. M.
700 1 $aMORETZSOHN, M. de C.
773 $tAnnals of Botany$gv. 136, p. 795-819, 2025.
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