Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence

The pantropical and subpantropical genus Mimosa L. comprises more than 500 species, of which nearly 480 are reported for the American Continent. Mimosa is subdivided into five sections, four of which are represented in southern South America: Batocaulon DC., Habbasia DC., Calothamnos Barneby, and Mi...

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Autores principales:	Bessega, Cecilia Fabiana, Hopp, Horacio Esteban
Publicado:	2008
Materias:	cpDNA Mimosa Phylogeny trnL intron trnL-trnF intergenic spacer Fabaceae Piptadenia viridiflora
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00266493_v95_n4_p567_Bessega http://hdl.handle.net/20.500.12110/paper_00266493_v95_n4_p567_Bessega
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00266493_v95_n4_p567_Bessega
record_format	dspace
spelling	paper:paper_00266493_v95_n4_p567_Bessega2023-06-08T14:53:53Z Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence Bessega, Cecilia Fabiana Hopp, Horacio Esteban cpDNA Mimosa Phylogeny trnL intron trnL-trnF intergenic spacer Fabaceae Mimosa Piptadenia viridiflora The pantropical and subpantropical genus Mimosa L. comprises more than 500 species, of which nearly 480 are reported for the American Continent. Mimosa is subdivided into five sections, four of which are represented in southern South America: Batocaulon DC., Habbasia DC., Calothamnos Barneby, and Mimosa. Previous taxonomic studies of the species from the austral region have found classification conflicts among (a) sections Batocaulon and Habbasia, (b) sections Calothamnos and Mimosa, and (c) series and subseries within section Mimosa. This paper reports a preliminary phylogenetic analysis of chloroplast nucleotide sequences of the trnL intron and the trnL-trnF intergenic spacer from 34 species of Mimosa and related genera. Key morphological characters were mapped onto the phylogenetic hypothesis and discussed. Sequence analysis indicates that the genus Mimosa is monophyletic; it is derived from Piptadenia viridiflora (Kunth) Benth. The four sections proposed by Barneby are not natural groups. The cladogram retrieved indicates that the representatives of Mimosa sect. Batocaulon are not clustered, the xerophylous representatives of this section are basal, and the remaining species are related to those species of section Habbasia, suggesting that section Batocaulon ser. Stipellares is more recently derived. The species of Mimosa sect. Calothamnos that were analyzed are nested in section Mimosa. The results seem to support retention of this section within section Mimosa as was noted previously by Bentham. The chloroplast sequence data suggest that the representatives from sections Calothamnos and Mimosa share a common ancestor with those from section Habbasia and section Batocaulon ser. Stipellares. Fil:Bessega, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hopp, H.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00266493_v95_n4_p567_Bessega http://hdl.handle.net/20.500.12110/paper_00266493_v95_n4_p567_Bessega
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	cpDNA Mimosa Phylogeny trnL intron trnL-trnF intergenic spacer Fabaceae Mimosa Piptadenia viridiflora
spellingShingle	cpDNA Mimosa Phylogeny trnL intron trnL-trnF intergenic spacer Fabaceae Mimosa Piptadenia viridiflora Bessega, Cecilia Fabiana Hopp, Horacio Esteban Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence
topic_facet	cpDNA Mimosa Phylogeny trnL intron trnL-trnF intergenic spacer Fabaceae Mimosa Piptadenia viridiflora
description	The pantropical and subpantropical genus Mimosa L. comprises more than 500 species, of which nearly 480 are reported for the American Continent. Mimosa is subdivided into five sections, four of which are represented in southern South America: Batocaulon DC., Habbasia DC., Calothamnos Barneby, and Mimosa. Previous taxonomic studies of the species from the austral region have found classification conflicts among (a) sections Batocaulon and Habbasia, (b) sections Calothamnos and Mimosa, and (c) series and subseries within section Mimosa. This paper reports a preliminary phylogenetic analysis of chloroplast nucleotide sequences of the trnL intron and the trnL-trnF intergenic spacer from 34 species of Mimosa and related genera. Key morphological characters were mapped onto the phylogenetic hypothesis and discussed. Sequence analysis indicates that the genus Mimosa is monophyletic; it is derived from Piptadenia viridiflora (Kunth) Benth. The four sections proposed by Barneby are not natural groups. The cladogram retrieved indicates that the representatives of Mimosa sect. Batocaulon are not clustered, the xerophylous representatives of this section are basal, and the remaining species are related to those species of section Habbasia, suggesting that section Batocaulon ser. Stipellares is more recently derived. The species of Mimosa sect. Calothamnos that were analyzed are nested in section Mimosa. The results seem to support retention of this section within section Mimosa as was noted previously by Bentham. The chloroplast sequence data suggest that the representatives from sections Calothamnos and Mimosa share a common ancestor with those from section Habbasia and section Batocaulon ser. Stipellares.
author	Bessega, Cecilia Fabiana Hopp, Horacio Esteban
author_facet	Bessega, Cecilia Fabiana Hopp, Horacio Esteban
author_sort	Bessega, Cecilia Fabiana
title	Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence
title_short	Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence
title_full	Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence
title_fullStr	Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence
title_full_unstemmed	Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence
title_sort	toward a phylogeny of mimosa (leguminosae: mimosoidae): a preliminary analysis of southern south american species based on chloroplast dna sequence
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00266493_v95_n4_p567_Bessega http://hdl.handle.net/20.500.12110/paper_00266493_v95_n4_p567_Bessega
work_keys_str_mv	AT bessegaceciliafabiana towardaphylogenyofmimosaleguminosaemimosoidaeapreliminaryanalysisofsouthernsouthamericanspeciesbasedonchloroplastdnasequence AT hopphoracioesteban towardaphylogenyofmimosaleguminosaemimosoidaeapreliminaryanalysisofsouthernsouthamericanspeciesbasedonchloroplastdnasequence
_version_	1768543407758639104

Toward a phylogeny of Mimosa (Leguminosae: Mimosoidae): A preliminary analysis of southern South American species based on chloroplast DNA sequence

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