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dc.contributor.author
Acosta, Juan Manuel
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dc.contributor.author
Zuloaga, Fernando Omar
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dc.contributor.author
Reinheimer, Renata
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dc.date.available
2020-10-21T11:39:26Z
dc.date.issued
2018-10
dc.identifier.citation
Acosta, Juan Manuel; Zuloaga, Fernando Omar; Reinheimer, Renata; Nuclear phylogeny and hypothesized allopolyploidization events in the Subtribe Otachyriinae (Paspaleae, Poaceae); Cambridge University Press; Systematics And Biodiversity; 17; 3; 10-2018; 277-294
dc.identifier.issn
1477-2000
dc.identifier.uri
http://hdl.handle.net/11336/116214
dc.description.abstract
Otachyriinae Butzin, one of the three subtribes within the Paspaleae tribe of grasses, includes seven genera and approximately 35 species. Interestingly, this subtribe comprises species with C3, C3-C4 intermediate, and C4 photosynthesis. The circumscription of Otachyriinae has changed through time, and still varies among treatments in current use. The monophyly of this subtribe has been recovered in previous studies based on plastid markers. A phylogenetic study taking into account polyploidy and a low-copy nuclear gene (LCNG) is still lacking in Paspaleae. A phylogeny including data from a LCNG is paramount to uncover reticulated evolution within the group. The purpose of the present study was to reconstruct the evolutionary history of Otachyriinae, based on both chloroplast and LCNG DNA with a focus on polyploidization. Several incongruences between gene trees allowed us to explore relationships between diploid and polyploid taxa. Our study identified several promising topics for future studies: genetic allopolyploidy and autopolyploidy was here documented using the characteristic pattern of double-labelled gene trees. The molecular evidence indicates that at least 40% of species of Otachyriinae show phylogenetic signature of polyploidy (16 taxa appear double-labelled in the nuclear gene trees); furthermore, the results support an allopolyploid origin of at least nine taxa in the subtribe: Rugoloa polygonata, a species with unknown photosynthetic pathway, the proto-kranz species Steinchisma laxum and Rugoloa hylaeica, and the C3 species Hymenachne felliana, H. grumosa, H. hemitomon, H. donacifolia, H. pernambucense, and P. grande. Also, our results confirm that the C4 genus Anthaenantia is unambiguously monophyletic and show that Anthaenantia lanata is an autopolyploid. We recognized six genera within subtribe Otachyriinae: Anthaenantia, Hymenachne, Otachyrium, Plagiantha, Rugoloa, and Steinchisma. Finally, Panicum species with historically ambiguous placements, i.e. P. condensatum, P. grande, P. harleyi, P. leptachne, P. longum, and P. stagnatile were transferred to the genus Hymenachne.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
APO1
dc.subject
EVOLUTION
dc.subject
GRASSES
dc.subject
NDHF
dc.subject
PHOTOSYNTHESIS
dc.subject
POLYPLOID
dc.subject
TAXONOMY
dc.subject.classification
Ciencias de las Plantas, Botánica
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Nuclear phylogeny and hypothesized allopolyploidization events in the Subtribe Otachyriinae (Paspaleae, Poaceae)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-10-19T16:17:52Z
dc.journal.volume
17
dc.journal.number
3
dc.journal.pagination
277-294
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Acosta, Juan Manuel. 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: Zuloaga, Fernando Omar. 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: Reinheimer, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.journal.title
Systematics And Biodiversity
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/14772000.2019.1572035
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