Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae)

Acacia aroma and A. macracantha are closely related species that inhabit northern and central Argentina. The reproductive barriers between them seem to be weak. They exhibit low genetic differentiation, high levels of interspecific gene flow, and extensive areas of sympatry. Isoenzymatic approaches...

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Autores principales: Casiva, Paola V., Vilardi, Juan Cesar, Cialdella, Ana María, Saidman, Beatriz Ofelia
Publicado: 2004
Materias:
Acacia
Argentina
Fabaceae
Genetic variability
Isozymes
Mating system parameters
Population structure
genetic differentiation
plant community
population genetics
South America
Acacia aroma
Acacia macracantha
Argentina (fish)
Embryophyta
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029122_v91_n1_p58_Casiva
http://hdl.handle.net/20.500.12110/paper_00029122_v91_n1_p58_Casiva
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00029122_v91_n1_p58_Casiva
record_format dspace
spelling paper:paper_00029122_v91_n1_p58_Casiva2023-06-08T14:23:02Z Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae) Casiva, Paola V. Vilardi, Juan Cesar Cialdella, Ana María Saidman, Beatriz Ofelia Acacia Argentina Fabaceae Genetic variability Isozymes Mating system parameters Population structure genetic differentiation plant community population genetics Argentina South America Acacia Acacia aroma Acacia aroma Acacia macracantha Acacia macracantha Argentina (fish) Embryophyta Fabaceae Acacia aroma and A. macracantha are closely related species that inhabit northern and central Argentina. The reproductive barriers between them seem to be weak. They exhibit low genetic differentiation, high levels of interspecific gene flow, and extensive areas of sympatry. Isoenzymatic approaches were used to evaluate the population structure and mating system parameters in natural Argentine populations of A. aroma and A. macracantha and to provide new tools for the analysis of relationships between these two species. All studied populations had high levels of genetic variability and no significant departures from Hardy-Weinberg expectations, but the two species did not differ from each other. Most variability occured within populations. Mating system analysis showed high levels of outcrossing, no biparental inbreeding, and a high probability that individuals within progeny arrays are full rather than half sibs. In all A. aroma and A. macracantha populations, polymorphic loci had the same allelic variants, and no geographic or genetic isolation between species was found. The results favor the hypothesis that these two entities represent a single polymorphic species rather than two distinct species. Fil:Casiva, P.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cialdella, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Saidman, B.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029122_v91_n1_p58_Casiva http://hdl.handle.net/20.500.12110/paper_00029122_v91_n1_p58_Casiva
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Acacia
Argentina
Fabaceae
Genetic variability
Isozymes
Mating system parameters
Population structure
genetic differentiation
plant community
population genetics
Argentina
South America
Acacia
Acacia aroma
Acacia aroma
Acacia macracantha
Acacia macracantha
Argentina (fish)
Embryophyta
Fabaceae
spellingShingle Acacia
Argentina
Fabaceae
Genetic variability
Isozymes
Mating system parameters
Population structure
genetic differentiation
plant community
population genetics
Argentina
South America
Acacia
Acacia aroma
Acacia aroma
Acacia macracantha
Acacia macracantha
Argentina (fish)
Embryophyta
Fabaceae
Casiva, Paola V.
Vilardi, Juan Cesar
Cialdella, Ana María
Saidman, Beatriz Ofelia
Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae)
topic_facet Acacia
Argentina
Fabaceae
Genetic variability
Isozymes
Mating system parameters
Population structure
genetic differentiation
plant community
population genetics
Argentina
South America
Acacia
Acacia aroma
Acacia aroma
Acacia macracantha
Acacia macracantha
Argentina (fish)
Embryophyta
Fabaceae
description Acacia aroma and A. macracantha are closely related species that inhabit northern and central Argentina. The reproductive barriers between them seem to be weak. They exhibit low genetic differentiation, high levels of interspecific gene flow, and extensive areas of sympatry. Isoenzymatic approaches were used to evaluate the population structure and mating system parameters in natural Argentine populations of A. aroma and A. macracantha and to provide new tools for the analysis of relationships between these two species. All studied populations had high levels of genetic variability and no significant departures from Hardy-Weinberg expectations, but the two species did not differ from each other. Most variability occured within populations. Mating system analysis showed high levels of outcrossing, no biparental inbreeding, and a high probability that individuals within progeny arrays are full rather than half sibs. In all A. aroma and A. macracantha populations, polymorphic loci had the same allelic variants, and no geographic or genetic isolation between species was found. The results favor the hypothesis that these two entities represent a single polymorphic species rather than two distinct species.
author Casiva, Paola V.
Vilardi, Juan Cesar
Cialdella, Ana María
Saidman, Beatriz Ofelia
author_facet Casiva, Paola V.
Vilardi, Juan Cesar
Cialdella, Ana María
Saidman, Beatriz Ofelia
author_sort Casiva, Paola V.
title Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae)
title_short Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae)
title_full Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae)
title_fullStr Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae)
title_full_unstemmed Mating system and population structure of Acacia aroma and A. macracantha (Fabaceae)
title_sort mating system and population structure of acacia aroma and a. macracantha (fabaceae)
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029122_v91_n1_p58_Casiva
http://hdl.handle.net/20.500.12110/paper_00029122_v91_n1_p58_Casiva
work_keys_str_mv AT casivapaolav matingsystemandpopulationstructureofacaciaaromaandamacracanthafabaceae
AT vilardijuancesar matingsystemandpopulationstructureofacaciaaromaandamacracanthafabaceae
AT cialdellaanamaria matingsystemandpopulationstructureofacaciaaromaandamacracanthafabaceae
AT saidmanbeatrizofelia matingsystemandpopulationstructureofacaciaaromaandamacracanthafabaceae
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