Variabilidade genética em populações naturais de Ziziphus joazeiro Mart., por meio de marcadores moleculares RAPD

Góis, Itamara Bomfim; Ferreira, Robério Anastácio; Silva-Mann, Renata; Pantaleão, Silmara de Moraes; Gois, Camila Bomfim de; Oliveira, Rodrigo Santana Caldas de

doi:10.1590/s0100-67622014000400005

Cited by 13 publications

(15 citation statements)

References 18 publications

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“…Besides, studies on Ziziphus joazeiro Mart. in population located in the municipality of Canhoba (Sergipe), with collection carried out in the recommended minimum spacing between supplying seeds of 50 m, the mean genetic similarity was 55.0%, and similarity ranged from 32 to 68% (Gois et al, 2014), which are values similar to those found in population P of S. terebinthifolius.…”

Section: Discussionsupporting

confidence: 63%

“…Schizolobium parahyba populations found in conservation units, forest edges, pastures, banana crops, and in populations inserted in an urban area (Paraty) presented H E of 0.36 (Freire et al, 2007). Studies on native populations of Ziziphus joazeiro Mart., located in different municipalities of the Lower São Francisco -Sergipe, observed H E of 0.25 (Santana do São Francisco/15 individuals), 0.30 (Canhoba/19 individuals), and 0.24 (Canindé de São Francisco/20 individuals) (Gois et al, 2014). Although the values of genetic diversity may be different, since they depend on intrinsic factors, such as the crossing system and the effective population size, as well as extrinsic factors, such as the number of sampled individuals, fragmentation, and isolation of the sampled areas, among others (Kramer et al, 2008), higher H E values in both populations (P and R) present moderate heterozygosity levels.…”

Section: Discussionmentioning

confidence: 97%

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Restoration over time and sustainability of Schinus terebinthifolius Raddi

et al. 2017

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ABSTRACT. The success of recovery programs on degraded areas is dependent on the genetic material to be used, which should present heterozygosity and genetic diversity in native and recovered populations. This study was carried out to evaluate the model efficiency to enable the recovery of a degraded area of the Lower São Francisco, Sergipe, Brazil. The target species for this study was Schinus terebinthifolius Raddi. Three populations were analyzed, the recovered area, seed-tree source population, and native tree population border established to the recovered area. The random amplified polymorphic DNA (RAPD) markers were used for diversity analysis. Genetic structure was estimated to evaluate the level of genetic variability existent in each population. There was no correlation between the spatial distribution and the genetic distances for all trees of the recovered area. The heterozygosity present in the recovered population was higher than the native tree population. The seed-tree source population presents genetic bottlenecks. Three clusters were suggested (ΔK = 3) with non-genetic structure. High intra-population genetic variability and inter-population differentiation are present. However, gene flow may also introduce potentially adaptive alleles in the populations of the recovered area, and the native population is necessary to ensure the sustainability and maintenance of the populations by allelic exchange.

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Section: Discussionsupporting

confidence: 63%

Section: Discussionmentioning

confidence: 97%

Restoration over time and sustainability of Schinus terebinthifolius Raddi

et al. 2017

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“…Researchers have been developing studies of genetic diversity in forest species, e.g., Gois et al (2014) detected average genetic similarities of 54, 55, and 44%, in three populations of Ziziphus joazeiro Mart. with dendrograms generated by UPGMA, using 20 RAPD markers.…”

Section: Discussionmentioning

confidence: 99%

“…(Santos et al, 2007), and Ziziphus joazeiro Mart. (Gois et al, 2014). However, studies in this scientific field in Caatinga populations are still incipient, given the importance of conserving their biodiversity due to the environmental degradation scenario that culminates in impaired genetic potential of its plant species.…”

Section: Introductionmentioning

confidence: 99%

Research Article Genetic diversity in a Poincianella pyramidalis (Tul.) L.P. Queiroz population assessed by RAPD molecular markers.

et al. 2017

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ABSTRACT. Poincianella pyramidalis (Tul.) L.P. Queiroz is an endemic Caatinga (Brazilian savannah biome) species that has been exploited for different purposes, although information is necessary about still existing natural populations. The objective of this study was to evaluate the genetic diversity among 20 P. pyramidalis individuals occurring in a population localized in the Caatinga biome of Paraíba State, aiming at seed collection, using RAPD markers. For the DNA extraction, young shoots of the individuals were used, and amplification was carried out using 20 primers. The obtained markers were converted to a binary matrix, from which a genetic dissimilarity matrix was built using the arithmetic complement of Jaccard's coefficient, and the dendrogram was built by the UPGMA analysis. No amplified fragment was monomorphic, resulting in 100% polymorphism of the analyzed population. The mean genetic diversity among the matrices was 63.28%, ranging from 30.9 to 97.7%. Individuals 09 and 17 showed relevant genetic proximity, and thus planting their seedlings at close sites would not be indicated. The population evaluated in this study showed high genetic diversity, originating twelve groups from the UPGMA hierarchical cluster analysis. Based on the results, individuals 09 and 17 can provide plant material for the evaluation of the physiological performance of P. pyramidalis seeds, and the set of individuals of this population has a high genetic diversity that characterizes them as adequate matrices for projects of restoration and conservation of the seed species.

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“…Plants more geographically isolated and with difficult access exhibit greater genetic differentiation (Gois et al, 2014). Several random H. pectinata plants occur in locations of high and easy accessibility, such as road borders and backyards, where the flow of transport, people, and animals is constant.…”

Section: Discussionmentioning

confidence: 99%

Research Article Analysis of genetic diversity of Hyptis pectinata (L.) Poit. plants using ISSR markers.

et al. 2017

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ABSTRACT. Hyptis pectinata, popularly known as 'sambacaitá' or 'canudinho', is a medicinal and aromatic species widely used in the Brazilian Northeast. In Sergipe, the excessive extraction of natural resources may reduce the genetic variability of native plants. Thus, molecular markers have frequently been applied to the characterization of genetic diversity as the basis for germplasm conservation and breeding programs. The objective of the present study was to evaluate the genetic diversity of H. pectinata plants collected in different municipalities of the State of Sergipe using ISSR molecular markers. Thirty-four primers were tested, nine of which were selected for providing reproducible and analyzable amplification products, resulting in 67 polymorphic bands. The expected heterozygosity ranged from 0.32 to 0.45, with a mean of 0.39. Polymorphism information content was of 0.49, which classifies the markers as moderately informative. A dendrogram was constructed

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Variabilidade genética em populações naturais de Ziziphus joazeiro Mart., por meio de marcadores moleculares RAPD

Cited by 13 publications

References 18 publications

Restoration over time and sustainability of Schinus terebinthifolius Raddi

Restoration over time and sustainability of Schinus terebinthifolius Raddi

Research Article Genetic diversity in a Poincianella pyramidalis (Tul.) L.P. Queiroz population assessed by RAPD molecular markers.

Research Article Analysis of genetic diversity of Hyptis pectinata (L.) Poit. plants using ISSR markers.

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