Diversity and genetic structure of mangaba remnants in states of northeastern Brazil

Amorim, J. A. E.; Mata, Lorena; Lédo, Ana Silva; Azevedo, Vânia Cristina Rennó; Silva, A.V.C.

doi:10.4238/2015.february.2.7

Cited by 17 publications

(25 citation statements)

References 23 publications

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“…Research on the mangaba tree is recent, especially the studies of genetic diversity using different molecular markers, such as RAPD [1] [2], ISSR [6] [7] [8] [9] and SSR [10]. These studies are important to assist in the knowledge of the genetic diversity of native populations and accessions, and can be used as tools to design conservation strategies and collection of new accessions to be introduced into the germplasm bank.…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity of Accessions and First Generation Progeny of the Mangaba Genebank

Soares¹,

Clivati²,

Melo³

et al. 2018

AJPS

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Mangaba (Hancornia speciosa Gomes-Apocynaceae) is an important fruit tree in Brazil and has an unexplored stock germplasm collection. Commercial varieties are unavailable and little is known about its potential as a source of genetic diversity for molecular breeding programs. Progeny tests may improve studies on commercial variability and facilitate genetic improvement of the species. Our aim was to evaluate the genetic diversity and structure of accessions and progeny from the Mangaba Genebank of Embrapa Coastal Tablelands. We estimated the genetic diversity of 96 individuals using 4 SSR markers. The mean observed heterozygosity was lower than expected, showing an excess of homozygotes, corroborated by the positive coefficient of endogamy. The genetic diversity indexes (F st ) and Nei's unbiased genetic identity (GI) revealed, in general, moderate genetic diversity between accessions. The relationship between matrices and progenies showed that there may be a greater degree of genetic information sharing between the ABP1 and ABP2 accessions. The Bayesian analysis suggested the presence of two distinct groups of genotypes (K = 2). These results will assist future breeding programs and facilitate the conservation of mangaba.

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Section: Introductionmentioning

confidence: 99%

Genetic Diversity of Accessions and First Generation Progeny of the Mangaba Genebank

Soares¹,

Clivati²,

Melo³

et al. 2018

AJPS

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“…), who reported that there was great interpopulation genetic variability. However, Amorim et al (2015), using microsatellite markers in mangaba, observed greater variation within populations (83.18%) than between them (10.82%).…”

Section: Resultsmentioning

confidence: 89%

“…Therefore, studies on the genetic diversity and structure of the remaining populations of mangaba are extremely important, in order to find alternatives for the species' preservation (Amorim et al, 2015). In addition, the domestication and incorporation of this species into production systems is directly related to knowledge of the range and distribution of genetic variability in natural populations (Costa et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Using microsatellite markers in mangaba, Amorim et al (2015) estimated the divergence and genetic structure of natural populations in the Brazilian Northeast, and found low genetic diversity in populations in Sergipe State. Therefore, the objective of this study was to estimate genetic variability in 10 natural populations of mangaba in the State of Sergipe using ISSR markers.…”

Section: Introductionmentioning

confidence: 99%

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Genetic diversity in natural populations of mangaba in Sergipe, the largest producer State in Brazil

et al. 2016

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ABSTRACT. Mangaba (Hancornia speciosa Gomes) is found in areas of coastal tablelands in the Brazilian Northeast and Cerrado regions. This species has been subjected to habitat fragmentation that is mainly due to human activity, and requires conservation strategies. The aim of this study was to analyze the structure and inter-and intrapopulation genetic diversity of natural populations of H. speciosa Gomes using inter-simple sequence repeat (ISSR) molecular markers. A total of 155 individuals were sampled in 10 natural populations (ITA, PAC, IND, EST, BC, PIR, JAP, BG, NEO, and SANT) in the State of Sergipe, Brazil. Fifteen primers were used to generate 162 fragments with 100% polymorphism. Genetic analysis showed that the variability between populations (77%) was higher than within populations (23%). It was possible to identify five different groups by the unweighted pair group method with arithmetic mean and principal coordinate analysis, and only one individual (E10) remained isolated. Using ISSR markers it was possible to obtain a molecular profile of the populations evaluated, showing that these markers were effective and exhibited sufficient polymorphism to estimate the genetic variability of natural populations of H. speciosa Gomes.

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“…The divergence data were compared with previous successful studies in individuals of the native population of Hancornia speciosa Gomes (Santos et al, 2017;Silva et al, 2017;Soares et al, 2016;Amorim et al, 2015;Costa et al, 2015;Jimenez et al, 2015;Silva et al, 2013) and BAGs Costa et al, 2011;Luz, 2016;Vitória, 2017), with the use of molecular markers.…”

Section: Molecular Analysismentioning

confidence: 99%

Antioxidant Activity, Rutin Content and Genetic Similarity Between Matrices and Progenies of Hancornia speciosa

Machado¹,

Oliveira²,

Oliveira³

et al. 2018

JAS

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Mangaba tree (Hancornia speciosa Gomes) is a tropical fruit species from Brazil and presents socioeconomic potential. The objective of this study was to determine antioxidant activity, rutin content and genetic similarity among in vivo and in vitro matrices and progenies of six accessions from the Mangaba Active Germplasm Bank of the Embrapa Coastal Tablelands, SE, Brazil. Young leaves of adult matrix plants and in vitro callus methanolic extracts obtained from young leaves resulted in differences between the accessions for the rutin content and high antioxidant activity. The Costa Azul accession, from Bahia, Brazil outstood with values above 3,000 g of dry extract/g of DPPH (2.2-diphenyl-1-picrilhydrazyl) in in vitro callus coming from nodal and internodal segments (3,023.73 and 3,136.80 g of dry extract/g of DPPH, respectively). Rutin was not found in extracts resulting from in vitro callus of mangaba tree. The difference among the values obtained for DPPH analysis are superior when compared with in vivo leaf extract, with the in vitro Costa Azul accession (nodal and internodal) outstanding, concluding that in vitro callus induction can interfere with chemical compounds of the plant. The markers detect genetic similarity under in vitro cultivation conditions. The Costa Azul accession group itself in isolation from others and EC 50 concentrations differentiated between leaf and callus are obtained. O EC 50 is superior in extracts deriving from in vitro callus, with the in vitro Costa Azul accession (nodal and internodal).

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Diversity and genetic structure of mangaba remnants in states of northeastern Brazil

Cited by 17 publications

References 23 publications

Genetic Diversity of Accessions and First Generation Progeny of the Mangaba Genebank

Genetic Diversity of Accessions and First Generation Progeny of the Mangaba Genebank

Genetic diversity in natural populations of mangaba in Sergipe, the largest producer State in Brazil

Antioxidant Activity, Rutin Content and Genetic Similarity Between Matrices and Progenies of Hancornia speciosa

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