Molecular phylogeny of <i>Nassauvia</i> (Asteraceae, Mutisieae) based on nrDNA ITS sequences

The phylogeny of the genus <i>Nassauvia</i> and closely related genera was reconstructed using sequences from the internal transcribed spacer regions (ITS) of nuclear ribosomal DNA. The genus <i>Triptilion</i> is nested within <i>Nassauvia</i>, making the latter g...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Maraner, Fabrizio, Samuel, Rosabelle, Stuessy, Tod F., Crawford, Daniel J., Crisci, Jorge Víctor, Pandey, Arun K., Mort, Mark E.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Naturales
Asteraceae
Mutisieae
Nassauvia
Flavonoid
Phylogeny
Pseudocephalia evolution
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/136698
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-136698
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Asteraceae
Mutisieae
Nassauvia
Flavonoid
Phylogeny
Pseudocephalia evolution
spellingShingle Ciencias Naturales
Asteraceae
Mutisieae
Nassauvia
Flavonoid
Phylogeny
Pseudocephalia evolution
Maraner, Fabrizio
Samuel, Rosabelle
Stuessy, Tod F.
Crawford, Daniel J.
Crisci, Jorge Víctor
Pandey, Arun K.
Mort, Mark E.
Molecular phylogeny of <i>Nassauvia</i> (Asteraceae, Mutisieae) based on nrDNA ITS sequences
topic_facet Ciencias Naturales
Asteraceae
Mutisieae
Nassauvia
Flavonoid
Phylogeny
Pseudocephalia evolution
description The phylogeny of the genus <i>Nassauvia</i> and closely related genera was reconstructed using sequences from the internal transcribed spacer regions (ITS) of nuclear ribosomal DNA. The genus <i>Triptilion</i> is nested within <i>Nassauvia</i>, making the latter genus paraphyletic. Neither of the two subgenera <i>Nassauvia</i> and <i>Strongyloma</i> is resolved as monophyletic, and none of the sections of subgenus <i>Nassauvia</i> is recovered as monophyletic. The evolution of the compound secondary inflorescences has been complex in <i>Nassauvia</i>, with the highly aggregated forms representing the original condition in the genus. However, the ancestral condition is equivocal in several clades, and there are alternative reconstructions for the gains–losses of the variously aggregated conditions. There has been at least one gain of solitary capitula in <i>Nassauvia</i>. The evolution of flavonoid chemistry has been complex in <i>Nassauvia</i>, and flavonoids are of limited phylogenetic-taxonomic utility in the genus. Gains–losses of flavonols occur only on terminals whereas changes in flavones and C-glycosyl flavones occur at various levels in the tree. Gains–losses of methylation of flavones and flavonols occur only on terminals.
format Articulo
Articulo
author Maraner, Fabrizio
Samuel, Rosabelle
Stuessy, Tod F.
Crawford, Daniel J.
Crisci, Jorge Víctor
Pandey, Arun K.
Mort, Mark E.
author_facet Maraner, Fabrizio
Samuel, Rosabelle
Stuessy, Tod F.
Crawford, Daniel J.
Crisci, Jorge Víctor
Pandey, Arun K.
Mort, Mark E.
author_sort Maraner, Fabrizio
title Molecular phylogeny of <i>Nassauvia</i> (Asteraceae, Mutisieae) based on nrDNA ITS sequences
title_short Molecular phylogeny of <i>Nassauvia</i> (Asteraceae, Mutisieae) based on nrDNA ITS sequences
title_full Molecular phylogeny of <i>Nassauvia</i> (Asteraceae, Mutisieae) based on nrDNA ITS sequences
title_fullStr Molecular phylogeny of <i>Nassauvia</i> (Asteraceae, Mutisieae) based on nrDNA ITS sequences
title_full_unstemmed Molecular phylogeny of <i>Nassauvia</i> (Asteraceae, Mutisieae) based on nrDNA ITS sequences
title_sort molecular phylogeny of <i>nassauvia</i> (asteraceae, mutisieae) based on nrdna its sequences
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/136698
work_keys_str_mv AT maranerfabrizio molecularphylogenyofinassauviaiasteraceaemutisieaebasedonnrdnaitssequences
AT samuelrosabelle molecularphylogenyofinassauviaiasteraceaemutisieaebasedonnrdnaitssequences
AT stuessytodf molecularphylogenyofinassauviaiasteraceaemutisieaebasedonnrdnaitssequences
AT crawforddanielj molecularphylogenyofinassauviaiasteraceaemutisieaebasedonnrdnaitssequences
AT criscijorgevictor molecularphylogenyofinassauviaiasteraceaemutisieaebasedonnrdnaitssequences
AT pandeyarunk molecularphylogenyofinassauviaiasteraceaemutisieaebasedonnrdnaitssequences
AT mortmarke molecularphylogenyofinassauviaiasteraceaemutisieaebasedonnrdnaitssequences
bdutipo_str Repositorios
_version_ 1764820457172762624

Ejemplares similares