Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae)
The identification of factors that structure intraspecific diversity is of particular interest for biological conservation and restoration ecology. All rangelands in Argentina are currently experiencing some form of deterioration or desertification. Acacia aroma is a multipurpose species widely dist...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19326203_v13_n2_p_Pometti http://hdl.handle.net/20.500.12110/paper_19326203_v13_n2_p_Pometti |
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paper:paper_19326203_v13_n2_p_Pometti2023-06-08T16:30:47Z Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae) Acacia adult aroma article DNA polymorphism gene mutation genetic variability genetic variation heterozygosity human human experiment major clinical study male natural population neighborhood nonhuman plant seed population density population genetic structure sampling Fabaceae genetic polymorphism genetics plant gene South America Fabaceae Genes, Plant Polymorphism, Genetic South America The identification of factors that structure intraspecific diversity is of particular interest for biological conservation and restoration ecology. All rangelands in Argentina are currently experiencing some form of deterioration or desertification. Acacia aroma is a multipurpose species widely distributed throughout this country. In this study, we used the AFLP technique to study genetic diversity, population genetic structure, and fine-scale spatial genetic structure in 170 individuals belonging to 6 natural Argentinean populations. With 401 loci, the mean heterozygosity (HE = 0.2) and the mean percentage of polymorphic loci (PPL = 62.1%) coefficients indicated that the genetic variation is relatively high in A. aroma. The analysis with STRUCTURE showed that the number of clusters (K) was 3. With Geneland analysis, the number of clusters was K = 4, sharing the same grouping as STRUCTURE but dividing one population into two groups. When studying SGS, significant structure was detected in 3 of 6 populations. The neighbourhood size in these populations ranged from 15.2 to 64.3 individuals. The estimated gene dispersal distance depended on the effective population density and disturbance level and ranged from 45 to 864 m. The combined results suggest that a sampling strategy, which aims to maintain a considerable part of the variability contained in natural populations sampled here, would include at least 3 units defined by the clusters analyses that exhibit particular genetic properties. Moreover, the current SGS analysis suggests that within the wider management units/provinces, seed collection from A. aroma should target trees separated by a minimum distance of 50 m but preferably 150 m to reduce genetic relatedness among seeds from different trees. © 2018 Pometti et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19326203_v13_n2_p_Pometti http://hdl.handle.net/20.500.12110/paper_19326203_v13_n2_p_Pometti |
| 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 adult aroma article DNA polymorphism gene mutation genetic variability genetic variation heterozygosity human human experiment major clinical study male natural population neighborhood nonhuman plant seed population density population genetic structure sampling Fabaceae genetic polymorphism genetics plant gene South America Fabaceae Genes, Plant Polymorphism, Genetic South America |
| spellingShingle |
Acacia adult aroma article DNA polymorphism gene mutation genetic variability genetic variation heterozygosity human human experiment major clinical study male natural population neighborhood nonhuman plant seed population density population genetic structure sampling Fabaceae genetic polymorphism genetics plant gene South America Fabaceae Genes, Plant Polymorphism, Genetic South America Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae) |
| topic_facet |
Acacia adult aroma article DNA polymorphism gene mutation genetic variability genetic variation heterozygosity human human experiment major clinical study male natural population neighborhood nonhuman plant seed population density population genetic structure sampling Fabaceae genetic polymorphism genetics plant gene South America Fabaceae Genes, Plant Polymorphism, Genetic South America |
| description |
The identification of factors that structure intraspecific diversity is of particular interest for biological conservation and restoration ecology. All rangelands in Argentina are currently experiencing some form of deterioration or desertification. Acacia aroma is a multipurpose species widely distributed throughout this country. In this study, we used the AFLP technique to study genetic diversity, population genetic structure, and fine-scale spatial genetic structure in 170 individuals belonging to 6 natural Argentinean populations. With 401 loci, the mean heterozygosity (HE = 0.2) and the mean percentage of polymorphic loci (PPL = 62.1%) coefficients indicated that the genetic variation is relatively high in A. aroma. The analysis with STRUCTURE showed that the number of clusters (K) was 3. With Geneland analysis, the number of clusters was K = 4, sharing the same grouping as STRUCTURE but dividing one population into two groups. When studying SGS, significant structure was detected in 3 of 6 populations. The neighbourhood size in these populations ranged from 15.2 to 64.3 individuals. The estimated gene dispersal distance depended on the effective population density and disturbance level and ranged from 45 to 864 m. The combined results suggest that a sampling strategy, which aims to maintain a considerable part of the variability contained in natural populations sampled here, would include at least 3 units defined by the clusters analyses that exhibit particular genetic properties. Moreover, the current SGS analysis suggests that within the wider management units/provinces, seed collection from A. aroma should target trees separated by a minimum distance of 50 m but preferably 150 m to reduce genetic relatedness among seeds from different trees. © 2018 Pometti et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| title |
Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae) |
| title_short |
Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae) |
| title_full |
Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae) |
| title_fullStr |
Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae) |
| title_full_unstemmed |
Spatial genetic structure within populations and management implications of the South American species Acacia aroma (Fabaceae) |
| title_sort |
spatial genetic structure within populations and management implications of the south american species acacia aroma (fabaceae) |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19326203_v13_n2_p_Pometti http://hdl.handle.net/20.500.12110/paper_19326203_v13_n2_p_Pometti |
| _version_ |
1768544841833119744 |