Strategies for conservation for disturbed Prosopis alba (Leguminosae, Mimosoidae) forests based on mating system and pollen dispersal parameters

Bessega, Cecilia; Pometti, Carolina Luciana; Ewens, Mauricio; Saidman, Beatriz Ofelia; Vilardi, Juan C.

doi:10.1007/s11295-011-0439-6

Cited by 28 publications

(42 citation statements)

References 44 publications

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“…Our results are in concordance with the findings of Bessega et al [39], who studied the genetic structure of P. alba, a very similar species. They conclude that pollen and seed dispersion is limited, estimating the average pollen dispersal distance to be between 5.36 and 30.92 m. Their findings explain the strong genetic structure of the P. alba population, which was studied through its mating system, but not through the spatial distribution of the genotypes.…”

Section: Comparison Of Pca and Spca Resultssupporting

confidence: 94%

Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a <i>Prosopis</i> sp. forest

Teich¹,

Verga²,

Balzarini³

2014

ABB

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Section: Comparison Of Pca and Spca Resultssupporting

confidence: 94%

Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a <i>Prosopis</i> sp. forest

Teich¹,

Verga²,

Balzarini³

2014

ABB

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“…Pollen and seed dispersal in P. alba would be limited and can explain the low differentiation among regions in Santiago del Estero previously studied (Bessega et al 2011). Pollen in Prosopis is dispersed by insects (Genisse et al 1990), mainly the honey bee Apis mellifera and the average distance of pollination estimated for P. alba was from 5 to 30 m depending of the method used (Bessega et al 2011). Prosopis species have an endozoic seed dispersal system mediated by native small herbivorous and livestock (Mares et al 1977;Hafez 1962).…”

Section: Discussionmentioning

confidence: 99%

Evidences of local adaptation in quantitative traits in Prosopis alba (Leguminosae)

et al. 2014

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Signals of selection on quantitative traits can be detected by the comparison between the genetic differentiation of molecular (neutral) markers and quantitative traits, by multivariate extensions of the same model and by the observation of the additive covariance among relatives. We studied, by three different tests, signals of occurrence of selection in Prosopis alba populations over 15 quantitative traits: three economically important life history traits: height, basal diameter and biomass, 11 leaf morphology traits that may be related with heat-tolerance and physiological responses and spine length that is very important from silvicultural purposes. We analyzed 172 G1-generation trees growing in a common garden belonging to 32 open pollinated families from eight sampling sites in Argentina. The multivariate phenotypes differ significantly among origins, and the highest differentiation corresponded to foliar traits. Molecular genetic markers (SSR) exhibited significant differentiation and allowed us to provide convincing evidence that natural selection is responsible for the patterns of morphological differentiation. The heterogeneous selection over phenotypic traits observed suggested different optima in each population and has important implications for gene resource management. The results suggest that the adaptive significance of traits should be considered together with population provenance in breeding program as a crucial point prior to any selecting program, especially in Prosopis where the first steps are under development.

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“…These populations differ from each other in the intensity of human disturbance. The most affected is Huajchilla Collection method followed Bessega et al (2000), Bessega, Pometti, Ewens, Saidman, and Vilardi (2011). Based on pollen and seed dispersal estimates in P. alba Argentinean populations, these authors recommend sampling trees separated more than 50 m from each other in order to avoid collecting genetically related material.…”

Section: Study Species and Genotypingmentioning

confidence: 99%

Genetic diversity and differentiation among Prosopis alba (Leguminosae) populations from dry valleys of Bolivia with different levels of human disturbance and altitude

Bessega

Pometti

López

et al. 2018

Ecology and Evolution

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The fast expansion of human population around La Paz, Bolivia (3,200–4,100 m.a.s.l.) triggered new suburban settlements in nearby areas in valleys and mountain feet. The white mesquite, Prosopis alba Griseb. (Leguminosae), is a resource (originally used by native communities) that is strongly affected by changes in land use. A gradient in the level of disturbance is found moving away from the La Paz city toward less altitude areas. The main objective of this study was to characterize genetically three P. alba populations with different levels of human disturbance located at different altitudes in Bolivia, in order to provide some guidelines for management and conservation of these species. Based on 10 SSR loci, the populations showed high level of genetic diversity in comparison with other forest species. The population less disturbed and situated at the lowest altitude was the most variable (H e = 0.51–0.42), whereas the less variable was the most disturbed and situated at the highest altitude. Heterozygote excess was observed in all populations. Most of genetic diversity (99%) is contained within populations. Genetic differentiation among populations is low (1%), suggesting low gene flow among populations. No evidence of recent bottlenecks events was detected. The estimates of the effective population size were low in all populations. The results are in agreement with the hypothesis that genetic diversity is reduced by the impact of anthropic disturbance in the population located at higher altitude in comparison with the lightly disturbed situated at lower altitude and farther from urban settlements.

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Strategies for conservation for disturbed Prosopis alba (Leguminosae, Mimosoidae) forests based on mating system and pollen dispersal parameters

Cited by 28 publications

References 44 publications

Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a <i>Prosopis</i> sp. forest

Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a <i>Prosopis</i> sp. forest

Evidences of local adaptation in quantitative traits in Prosopis alba (Leguminosae)

Genetic diversity and differentiation among Prosopis alba (Leguminosae) populations from dry valleys of Bolivia with different levels of human disturbance and altitude

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Strategies for conservation for disturbed Prosopis alba (Leguminosae, Mimosoidae) forests based on mating system and pollen dispersal parameters

Cited by 28 publications

References 44 publications

Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a &lt;i&gt;Prosopis&lt;/i&gt; sp. forest

Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a &lt;i&gt;Prosopis&lt;/i&gt; sp. forest

Evidences of local adaptation in quantitative traits in Prosopis alba (Leguminosae)

Genetic diversity and differentiation among Prosopis alba (Leguminosae) populations from dry valleys of Bolivia with different levels of human disturbance and altitude

Contact Info

Product

Resources

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Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a <i>Prosopis</i> sp. forest

Assessing spatial genetic structure from molecular marker data via principal component analyses: A case study in a <i>Prosopis</i> sp. forest