Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance

Spatial genetic structure (SGS) in plants is primarily determined by the interaction between pollen and seed dispersal, but it is strongly affected by both evolutionary and ecological processes. SGS studies in forest species also allow evaluating the consequences of human-mediated disturbance on pol...

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Detalles Bibliográficos
Autores principales: Bessega, Cecilia Fabiana, Pometti, Carolina Luciana, Saidman, Beatriz Ofelia, Vilardi, Juan Cesar
Publicado: 2016
Materias:
Autocorrelation analysis
Isolation by distance
Neighborhood size
Pollen dispersal
Spatial genetic structure
autocorrelation
dispersal
environmental disturbance
genetic structure
genetic variation
pollen
population genetics
seed
spatial analysis
tree
Mimosoideae
Prosopis alba
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16124669_v135_n3_p495_Bessega
http://hdl.handle.net/20.500.12110/paper_16124669_v135_n3_p495_Bessega
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_16124669_v135_n3_p495_Bessega
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spelling paper:paper_16124669_v135_n3_p495_Bessega2023-06-08T16:25:14Z Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance Bessega, Cecilia Fabiana Pometti, Carolina Luciana Saidman, Beatriz Ofelia Vilardi, Juan Cesar Autocorrelation analysis Isolation by distance Neighborhood size Pollen dispersal Spatial genetic structure autocorrelation dispersal environmental disturbance genetic structure genetic variation pollen population genetics seed spatial analysis tree Mimosoideae Prosopis alba Spatial genetic structure (SGS) in plants is primarily determined by the interaction between pollen and seed dispersal, but it is strongly affected by both evolutionary and ecological processes. SGS studies in forest species also allow evaluating the consequences of human-mediated disturbance on pollen and seed movement and designing strategies of sustainable use of native forest resources. The present paper compares fine-scale SGS between two populations of Prosopis alba: Fernandez-Forres (FF) and Campo Duran (CD), based on the variation of 12 SSR markers. Populations show different history, management, and levels of disturbance. FF is highly disturbed and fragmented by agricultural activity and stock-breeding. Although no significant differences were observed in genetic variability parameters, highly significant genetic differentiation was detected with virtually no admixture between populations. SGS was positive and significant at short distances only in the non-disturbed population of CD. Accordingly, estimated neighborhood size and effective gene dispersal are higher in FF than in CD. This result might be explained by the higher incidence of livestock in seed dispersal and the patchy structure favoring longer pollen movement and artificial thinning and selection in FF. The results are relevant to conservation and breeding programs, suggesting that the distance between seed trees to be sampled should be larger than 22 m, the estimated distance of significant SGS in P. alba. © 2016, Springer-Verlag Berlin Heidelberg. Fil:Bessega, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pometti, C.L. 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. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16124669_v135_n3_p495_Bessega http://hdl.handle.net/20.500.12110/paper_16124669_v135_n3_p495_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 Autocorrelation analysis
Isolation by distance
Neighborhood size
Pollen dispersal
Spatial genetic structure
autocorrelation
dispersal
environmental disturbance
genetic structure
genetic variation
pollen
population genetics
seed
spatial analysis
tree
Mimosoideae
Prosopis alba
spellingShingle Autocorrelation analysis
Isolation by distance
Neighborhood size
Pollen dispersal
Spatial genetic structure
autocorrelation
dispersal
environmental disturbance
genetic structure
genetic variation
pollen
population genetics
seed
spatial analysis
tree
Mimosoideae
Prosopis alba
Bessega, Cecilia Fabiana
Pometti, Carolina Luciana
Saidman, Beatriz Ofelia
Vilardi, Juan Cesar
Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance
topic_facet Autocorrelation analysis
Isolation by distance
Neighborhood size
Pollen dispersal
Spatial genetic structure
autocorrelation
dispersal
environmental disturbance
genetic structure
genetic variation
pollen
population genetics
seed
spatial analysis
tree
Mimosoideae
Prosopis alba
description Spatial genetic structure (SGS) in plants is primarily determined by the interaction between pollen and seed dispersal, but it is strongly affected by both evolutionary and ecological processes. SGS studies in forest species also allow evaluating the consequences of human-mediated disturbance on pollen and seed movement and designing strategies of sustainable use of native forest resources. The present paper compares fine-scale SGS between two populations of Prosopis alba: Fernandez-Forres (FF) and Campo Duran (CD), based on the variation of 12 SSR markers. Populations show different history, management, and levels of disturbance. FF is highly disturbed and fragmented by agricultural activity and stock-breeding. Although no significant differences were observed in genetic variability parameters, highly significant genetic differentiation was detected with virtually no admixture between populations. SGS was positive and significant at short distances only in the non-disturbed population of CD. Accordingly, estimated neighborhood size and effective gene dispersal are higher in FF than in CD. This result might be explained by the higher incidence of livestock in seed dispersal and the patchy structure favoring longer pollen movement and artificial thinning and selection in FF. The results are relevant to conservation and breeding programs, suggesting that the distance between seed trees to be sampled should be larger than 22 m, the estimated distance of significant SGS in P. alba. © 2016, Springer-Verlag Berlin Heidelberg.
author Bessega, Cecilia Fabiana
Pometti, Carolina Luciana
Saidman, Beatriz Ofelia
Vilardi, Juan Cesar
author_facet Bessega, Cecilia Fabiana
Pometti, Carolina Luciana
Saidman, Beatriz Ofelia
Vilardi, Juan Cesar
author_sort Bessega, Cecilia Fabiana
title Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance
title_short Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance
title_full Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance
title_fullStr Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance
title_full_unstemmed Fine-scale spatial genetic structure analysis in two Argentine populations of Prosopis alba (Mimosoideae) with different levels of ecological disturbance
title_sort fine-scale spatial genetic structure analysis in two argentine populations of prosopis alba (mimosoideae) with different levels of ecological disturbance
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16124669_v135_n3_p495_Bessega
http://hdl.handle.net/20.500.12110/paper_16124669_v135_n3_p495_Bessega
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