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dc.contributor.author
Brignone, Nicolás Fernando
dc.contributor.author
Pozner, Raúl Ernesto
dc.contributor.author
Denham, Silvia Suyai
dc.date.available
2021-12-02T15:15:38Z
dc.date.issued
2019-10
dc.identifier.citation
Brignone, Nicolás Fernando; Pozner, Raúl Ernesto; Denham, Silvia Suyai; Origin and evolution of Atriplex (Amaranthaceae s.l.) in the Americas: Unexpected insights from South American species; International Association for Plant Taxonomy; Taxon; 68; 5; 10-2019; 1021-1036
dc.identifier.issn
0040-0262
dc.identifier.uri
http://hdl.handle.net/11336/147962
dc.description.abstract
With ca. 300 species of herbs, shrubs and subshrubs adapted to saline or alkaline soils, the evolution of the genus Atriplex is key to understand the development of semi-arid environments worldwide. Previous phylogenetic analyses of Atriplex, including only a few species from South America, especially in comparison with North American species represented, proposed a North American origin for the South American Atriplex, through more than one dispersal event. Since South America is one of the four centres of Atriplex diversity, with a high number of endemic species, a wider and more representative sampling of this region is essential to understand the origin and evolution of the genus Atriplex in the Americas. We performed a phylogenetic analysis with estimated clade ages and an ancestral range estimation focused on the American species of Atriplex, to identify South American lineages, their relationships with other lineages of the genus (and particularly with North American ones), and to unravel their biogeographical history in the Americas. Phylogenetic analyses were conducted with sequence data from ITS, ETS and atpB-rbcL spacer markers, using maximum parsimony, Bayesian inference and maximum likelihood approaches. The DEC+J model implemented in BioGeoBEARS was applied in order to infer ancestral ranges. The Americas were colonized by Atriplex in two independent dispersal events: (1) the C4 Atriplex from Eurasia or Australia, and (2) the C3 Atriplex (represented only by the extant A. chilensis) from Eurasia. The C4 American lineage of Atriplex originated roughly 10.4 Ma (95% HPD = 13.31–7.62 Myr) in South America, where two lineages underwent in situ diversification and evolved sympatrically. North America was colonized by Atriplex from South America; later, one lineage moved from North America to South America. Most of the extant species have arisen in the last 3–4 Myr, in Pliocene–Pleistocene. We detected some South American taxa differing in position between both nuclear and atpB-rbcL spacer partitions, which could be explained by chloroplast capture.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
International Association for Plant Taxonomy
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ATRIPLEX
dc.subject
ATRIPLICEAE
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BIOGEOGRAPHY
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CHLOROPLAST CAPTURE
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DISPERSAL
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DIVERGENCE TIMES
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MOLECULAR PHYLOGENY
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SOUTH AMERICA
dc.subject.classification
Ciencias de las Plantas, Botánica
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Origin and evolution of Atriplex (Amaranthaceae s.l.) in the Americas: Unexpected insights from South American species
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-25T17:29:40Z
dc.identifier.eissn
1996-8175
dc.journal.volume
68
dc.journal.number
5
dc.journal.pagination
1021-1036
dc.journal.pais
Austria
dc.journal.ciudad
Viena
dc.description.fil
Fil: Brignone, Nicolás Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina
dc.description.fil
Fil: Pozner, Raúl Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina
dc.description.fil
Fil: Denham, Silvia Suyai. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina
dc.journal.title
Taxon
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1002/tax.12133
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/tax.12133
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