Landscape-Level and Fine-Scale Genetic Structure of the Neotropical Tree<i>Protium spruceanum</i>(Burseraceae)

Vieira, Fábio de Almeida; Fajardo, Cristiane Gouvêa; Souza, Anderson Marcos de; Carvalho, Dulcinéia de

doi:10.1155/2010/120979

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…Unfortunately, we do not know the history of deforestation in this area. The intensity of FSGS in B. papyrifera (Sp = 0.011-0.013) was similar to that of three other tropical tree species, the winddispersed Dalbergia nigra (Sp = 0.017 (De Oliveira Buzatti et al 2012)) and the bird-dispersed Protium spruceanum (mean Sp = 0.008 (Vieira et al 2010)) and Pouteria reticulate (Sp = 0.006-0.010 (Schroeder et al 2014)). All are insectpollinated.…”

Section: Fine-scale Spatial Genetic Structuresupporting

confidence: 66%

Fine-scale spatial genetic structure in the frankincense tree Boswellia papyrifera (Del.) Hochst. and implications for conservation

Addisalem

Duminil

Wouters

et al. 2016

Tree Genetics & Genomes

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The fine-scale genetic structure and how it varies between generations depends on the spatial scale of gene dispersal and other fundamental aspects of species' biology, such as the mating system. Such knowledge is crucial for the design of genetic conservation strategies. This is particularly relevant for species that are increasingly fragmented such as Boswellia papyrifera. This species occurs in dry tropical forests from Ethiopia, Eritrea and Sudan and is an important source of frankincense, a highly valued aromatic resin obtained from the bark of the tree. This study assessed the genetic diversity and fine-scale spatial genetic structure (FSGS) of two cohorts (adults and seedlings) from two populations (Guba-Arenja and Kurmuk) in Western Ethiopia and inferred intrapopulation gene dispersal in the species, using microsatellite markers. The expected heterozygosity (H E ) was 0.664-0.724.The spatial analyses based on kinship coefficient (F ij ) revealed a significant positive genetic correlation up to a distance of 130 m. Spatial genetic structure was relatively weak (Sp = 0.002-0.014) indicating that gene dispersal is extensive within the populations. Based on the FSGS patterns found, we estimate indirectly gene dispersal distances of 103 and 124 m for the two populations studied. The high heterozygosity, the low fixation index and the low Sp values found in this study are consistent with outcrossing as the (predominant) mating system in B. papyrifera. We suggest that seed collection for ex situ conservation and reforestation programmes of B. papyrifera should use trees separated by distances of at least 100 m but preferably 150 m to limit genetic relatedness among seeds from different trees. Communicated by F. GugerliElectronic supplementary material The online version of this article

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Section: Fine-scale Spatial Genetic Structuresupporting

confidence: 66%

Fine-scale spatial genetic structure in the frankincense tree Boswellia papyrifera (Del.) Hochst. and implications for conservation

Addisalem

Duminil

Wouters

et al. 2016

Tree Genetics & Genomes

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Fine-scale genetic dynamics of a dominant neotropical tree in the threatened Brazilian Atlantic Rainforest

Vieira

Fajardo

Souza

et al. 2012

Tree Genetics & Genomes

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Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species

Sola

Mujtar

Gallo

et al. 2020

Forestry: An International Journal of Forest Research

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Understanding the impact of management on the dispersal potential of forest tree species is pivotal in the context of global change, given the implications of gene flow on species evolution. We aimed to determine the effect of logging on gene flow distances in two Nothofagus species from temperate Patagonian forests having high ecological relevance and wood quality. Therefore, a total of 778 individuals (mature trees and saplings) of Nothofagus alpina and N. obliqua, from a single plot managed 20 years ago (2.85 hectares), were mapped and genotyped at polymorphic nuclear microsatellite loci. Historical estimates of gene dispersal distance (based on fine-scale spatial genetic structure) and contemporary estimates of seed and pollen dispersal (based on spatially explicit mating models) were obtained. The results indicated restricted gene flow (gene distance ≤ 45 m, both pollen and seed), no selfing and significant seed and pollen immigration from trees located outside the studied plot but in the close surrounding area. The size of trees (diameter at breast height and height) was significantly associated with female and/or male fertility. The significant fine-scale spatial genetic structure was consistent with the restricted seed and pollen dispersal. Moreover, both estimates of gene dispersal (historical and contemporary) gave congruent results. This suggests that the recent history of logging within the study area has not significantly influenced on patterns of gene flow, which can be explained by the silviculture applied to the stand. The residual tree density maintained species composition, and the homogeneous spatial distribution of trees allowed the maintenance of gene dispersal. The short dispersal distance estimated for these two species has several implications both for understanding the evolution of the species and for defining management, conservation and restoration actions. Future replication of this study in other Nothofagus Patagonian forests would be helpful to validate our conclusions.

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Landscape-Level and Fine-Scale Genetic Structure of the Neotropical TreeProtium spruceanum(Burseraceae)

Cited by 3 publications

References 34 publications

Fine-scale spatial genetic structure in the frankincense tree Boswellia papyrifera (Del.) Hochst. and implications for conservation

Fine-scale spatial genetic structure in the frankincense tree Boswellia papyrifera (Del.) Hochst. and implications for conservation

Fine-scale genetic dynamics of a dominant neotropical tree in the threatened Brazilian Atlantic Rainforest

Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species

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