GENÉTICA DA CONSERVAÇÃO DE Cabralea canjerana (Vell.) Mart. (Meliaceae) EM FRAGMENTOS FLORESTAIS DE MATA ATLÂNTICA NA APA FERNÃO DIAS

Melo, Arthur Tavares de Oliveira; Coelho, Alexandre Siqueira Guedes; Pereira, Marlei Ferreira; Blanco, Angel José Vieira; Franceschinelli, Edivani Villaron

doi:10.1590/0100-67622015000200016

Cited by 4 publications

(5 citation statements)

References 24 publications

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“…Cabralea canjerana spp. canjerana is a dioecious subspecies pollinated through visit of small moths to flowers of both sexes, showing high pollinator dependence on seed production (Franceschinelli et al 2015). In Brazil, C. canjerana ssp.…”

Section: Study Speciesmentioning

confidence: 99%

“…Our results show the importance of this type of law in protecting the genetic diversity of Atlantic forest trees. There are significant correlations between altitude, population density and genetic diversity in C. canjerana populations from Fernão Dias EPA (Melo et al 2015).…”

Section: Genetic Diversitymentioning

confidence: 99%

“…The concentration of pollen-mediated gene flow within populations may be the consequence of the limited flight distance of C. canjerana pollinators. This subspecies is commonly pollinated by small nocturnal moths (Franceschinelli et al 2015), which usually have Table 3. Current pollen mediated gene-flow parameters of three Cabralea canjerana subsp.…”

Section: Short-distance Pollen-mediated Gene Flowmentioning

confidence: 99%

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Gene flow and fine-scale spatial genetic structure inCabralea canjerana(Meliaceae), a common tree species from the Brazilian Atlantic forest

Melo

Franceschinelli

2016

J. Trop. Ecol.

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Abstract:The Atlantic forest is the biome most severely affected by deforestation in Brazil. Cabralea canjerana spp. canjerana is a dioecious tree species with widespread distribution in the Neotropical region. This species is considered a model to ascertain population ecology parameters for endangered plant species from the Atlantic forest. Fine-scale spatial genetic structure and pollen-mediated gene flow are crucial information in landscape genetics and evolutionary ecology. A total of 192 adults and 121 offspring were sampled in seven C. canjerana populations in the Southern Minas Gerais State, Brazil, to assess whether pollen-mediated gene flow is able to prevent spatial genetic structure within and among Atlantic forest fragments. Several molecular ecology parameters were estimated using microsatellite loci. High levels of genetic diversity (HE = 0.732) and moderate population structure (θ = 0.133) were recorded. No significant association between kinship and spatial distance amongst individuals within each population (Sp = 0.000109) was detected. Current pollen-mediated gene flow occurs mainly within forest fragments, probably due to short-distance flights of the pollinator of C. canjerana, and also the forest fragmentation may have restricted flight distance. The high levels of genetic differentiation found amongst the seven sites sampled demonstrated how habitat fragmentation affects the gene flow process in natural areas.

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Section: Study Speciesmentioning

confidence: 99%

Section: Genetic Diversitymentioning

confidence: 99%

Section: Short-distance Pollen-mediated Gene Flowmentioning

confidence: 99%

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Gene flow and fine-scale spatial genetic structure inCabralea canjerana(Meliaceae), a common tree species from the Brazilian Atlantic forest

Melo

Franceschinelli

2016

J. Trop. Ecol.

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“…Neutral molecular markers are fundamental tools for studying patterns of genetic dispersion (Gonçalves et al 2014;Melo et al 2015;Hoeltgebaum et al 2015). Of all the advantages attributed to inter simple sequence repeats (ISSRs), their most outstanding characteristic is a high efficiency for the detection of polymorphisms among taxa or genotypes.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of populations of the dioecious Myrsine coriacea (Primulaceae) in the Atlantic Forest

et al. 2018

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Although a species' sexual system may influence the genetic diversity of its populations in their natural environment, there have been few such studies involving indigenous species of the Atlantic Forest. Here we study Myrsine coriacea, a dioecious tree widely used in reforestation programs despite a lack of information about its natural interpopulation genetic variation. To address this knowledge gap, intra-and interpopulation genetic diversity were measured for male and female individuals of ten natural populations using ISSR markers. Greater intrapopulation genetic diversity indicated interpopulation gene flow, regardless of isolation and distance between populations. Multivariate analyses detected significant differences in genetic diversity between populations, but not between males and females, which indicates that genetic diversity did not differ between the two sex morphs. Distance between populations was unrelated to genetic diversity. Myrsine coriacea has not experienced a loss of genetic variability despite the characteristic segregated spatial distribution of its populations. These results suggest that obligatory cross-pollination and dispersal by birds may be important mechanisms for the maintenance of genetic diversity in natural populations of M. coriacea.

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“…The molecular characterization is, therefore, a tool of great importance for genetic conservation and breedig programs, since it generates information, both about the intrinsic characteristics of the species, as its population dynamics (AGUIAR et al, 2013;MELO et al 2015;.…”

Section: Introductionmentioning

confidence: 99%

Molecular Characterization of Jaboticaba Tree Genotypes Located in the Municipalities of Recôncavo of Bahia

et al. 2016

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ABSTRACT-The jaboticaba tree (Plinia sp.) is a native fruit tree belonging to the Myrtaceae family, which occurs spontaneously throughout Brazil. The estimation of genetic divergence among genotypes of native populations can be useful for conservation and knowledge of available genetic resources, in the formation of gene banks and breeding species. In order to evaluate the genetic diversity of jaboticaba trees identified in the Bahia Reconcavo municipalities, 35 genotypes were characterized by ISSR primers (Inter Simple Sequence Repeats). The 18 primers generated a total of 463 amplicons, and the number of initiator fragments ranged from 14 to 36, with an average of 25.72% and 99.65% polymorphism. Polymorphic information content ranged from 0.13 to 0.33 with a mean of 0.22 and the marker resolution power from 4.34 to 15.77, with an average of 8.67. Multivariate analysis allowed the formation of five groups of genetic divergence, where the longest distance was 0.97 between JCA6 and JSF8 genotypes and the lower of JMT2 and JCA1 (0.11). From the use of ISSR markers it is possible to check the variability between genotypes on the evaluated jaboticaba trees. Index terms: genetic diversity, ISSR, Plinia sp. CARACTERIZAÇÃO MOLECULAR DE GENÓTIPOS DE

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GENÉTICA DA CONSERVAÇÃO DE Cabralea canjerana (Vell.) Mart. (Meliaceae) EM FRAGMENTOS FLORESTAIS DE MATA ATLÂNTICA NA APA FERNÃO DIAS

Cited by 4 publications

References 24 publications

Gene flow and fine-scale spatial genetic structure inCabralea canjerana(Meliaceae), a common tree species from the Brazilian Atlantic forest

Gene flow and fine-scale spatial genetic structure inCabralea canjerana(Meliaceae), a common tree species from the Brazilian Atlantic forest

Genetic diversity of populations of the dioecious Myrsine coriacea (Primulaceae) in the Atlantic Forest

Molecular Characterization of Jaboticaba Tree Genotypes Located in the Municipalities of Recôncavo of Bahia

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