Origins of polyploidy in Paspalum stellatum and related species (Poaceae, Panicoideae, Paspaleae) inferred from phylogenetic and cytogenetic analyses

Paspalum stellatum is widely distributed in the American continent and it is known to include diploid cytotypes (2n = 2x = 20) and polyploid cytotypes (2n = 32 and 52). It is closely related to P. eucomum, P. malmeanum and P. schesslii. After chromosome counting and geographical mapping of the diffe...

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Otros Autores: Bonasora, Marisa Graciela, López, Alicia, Vaio, Magdalena, Speranza, Pablo Rafael, Honfi, Ana I., Rua, Gabriel Hugo
Formato: Artículo
Lenguaje:Inglés
Materias:
ITS
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2018bonasora.pdf
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245 1 |a Origins of polyploidy in Paspalum stellatum and related species (Poaceae, Panicoideae, Paspaleae) inferred from phylogenetic and cytogenetic analyses 
520 |a Paspalum stellatum is widely distributed in the American continent and it is known to include diploid cytotypes (2n = 2x = 20) and polyploid cytotypes (2n = 32 and 52). It is closely related to P. eucomum, P. malmeanum and P. schesslii. After chromosome counting and geographical mapping of the different cytotypes, phylogenetic relationships between them were explored in order to infer the origin and evolution of the polyploid complex P. stellatum and related species. Additionally, several unusual chromosome numbers are here reported for P. stellatum (2n = 30, 46, 48, 56 and 60) from the Brazilian cerrado. Phylogenetic analysis using plastid DNA showed that the cytotypes of P. stellatum split into two clades, one of which included all accessions with 2n = 32 and P. schesslii. Using ITS for phylogenetic analysis showed that P. schesslii, P. malmeanum and P. eucomum were grouped together as expected. The origin of the cytotype 2n = 32 of P. stellatum may have involved P. schesslii as one of the putative progenitors with a diploid cytotype of P. stellatum as the other. 
653 |a CHROMOSOME COUNT 
653 |a DIPLOID HYBRID SPECIATION 
653 |a ITS 
653 |a MOLECULAR PHYLOGENY 
653 |a PLASTID DNA 
653 |a POLYPLOID HYBRID SPECIATION 
700 1 |a Bonasora, Marisa Graciela  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Botánica Sistemática. Buenos Aires, Argentina.  |u CONICET. Buenos Aires, Argentina.  |9 66907 
700 1 |a López, Alicia  |u Instituto Nacional de Tecnología Agropecuaria (INTA). Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce (EEA Balcarce). UIB-INTA.Balcarce, Buenos Aires, Argentina.  |u CONICET. Buenos Aires, Argentina.  |9 68241 
700 1 |9 68242  |a Vaio, Magdalena  |u Universidad de la República. Facultad de Agronomía. Montevideo, Uruguay. 
700 1 |9 66908  |a Speranza, Pablo Rafael  |u Universidad de la República. Facultad de Agronomía. Montevideo, Uruguay. 
700 1 |a Honfi, Ana I.  |u Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales (FCEQyN). Instituto de Biología Subtropical (IBS, CONICET-UNaM). Programa de Estudios Florísticos y Genética Vegetal. Posadas, Misiones, Argentina.  |u CONICET - Universidad Nacional de Misiones. Instituto de Biología Subtropical (IBS, CONICET-UNaM) Posadas, Misiones, Argentina.  |9 66911 
700 1 |a Rua, Gabriel Hugo  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Botánica Sistemática. Buenos Aires, Argentina.  |u CONICET. Buenos Aires, Argentina.  |9 25944 
773 0 |t Botanical Journal of the Linnean Society  |w SECS000048  |g vol.188, no.1 (2018), p.21-33, tbls., grafs., il. 
856 |f 2018bonasora  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2018bonasora.pdf  |x ARTI201902 
856 |z LINK AL EDITOR  |u https://www.linnean.org 
942 |c ARTICULO 
942 |c ENLINEA 
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