Genetic diversity among natural populations of Mandevilla velutina

Bertoni, Bianca Waléria; Souza, A. V. de; Biondo, Ronaldo; França, Suzelei de Castro; Telles, Mariana P. C.; Pereira, Ana Maria Soares

doi:10.1590/s0102-05362010000200012

Cited by 9 publications

(5 citation statements)

References 12 publications

(1 reference statement)

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“…Although routine use of this technique is still limited, examples are increasing where in vitro conservation is used both in research laboratories and in ornamental plant biofactories. For instance, the germplasm conservation of native species with high commercial potential as ornamental, or for the alimentation and pharmacological use, has been used to preserve genetic variability and allowed the study of its properties in a controlled environment through the use of in vitro culture techniques (FORD-LLOYD and JACKSON, 1991;VILLALOBOS et al, 1991;BERTONI et al, 2010). The establishment of an in vitro protocol for the conservation of a wild species allowed the creation of reference databases for future studies of other species (CORDEIRO et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

In vitro conservation of ornamental plants

Silva

Özüdoğru²,

Reis³

et al. 2018

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The market of flowers and ornamental plants is dependent on the diversification of species and the availability of high quality propagation materials. Actually, in vitro culture techniques performance a prominent role in the multiplication and maintenance of commercially propagated ornamental plant species, and are promising for the production of thousands of high quality plants in relatively short term. In addition, when market demand for a particular species is low or zero in a specific period of the year, in vitro culture techniques allow the conservation of cultures under aseptic conditions, by Slow Growth Storage (SGS), from a few weeks to one year (or more), without affecting their viability and potential regrowth. This can be achieved by modifying the constitution of the culture medium and the maintenance conditions of in vitro cultures. Obviously, the success of the technique depends on greatly on the physiological characteristics of the species to be conserved, as well. Once a SGS protocol is optimized, the expenses labor, the possibility of contamination and the probability of somaclonal variation can be reduced markedly.

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Section: Introductionmentioning

confidence: 99%

In vitro conservation of ornamental plants

Silva

Özüdoğru²,

Reis³

et al. 2018

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“…Numerous species of plants in Brazil and other regions with tropical climatic conditions have been listed as priorities for conservation, due to their high degree of endemism (Kageyama et al, 2003;Bertoni et al, 2010). Erythrina velutina Willd.…”

Section: Introductionmentioning

confidence: 99%

“…RAPD (random amplified polymorphic DNA) and ISSR (inter-simple sequence repeat) techniques are valuable in studies aimed at genetic mapping, population genetics, molecular systematics, genotype fingerprinting, and marker-assisted selection in plant and animal breeding (Lacerda et al, 2001;Pinheiro et al, 2012). Among the advantages are low-cost markers that provide an unlimited number of polymorphic fragments, which nearly cover the entire genomic DNA (Bertoni et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Populations of Erythrina velutina Willd. at risk of extinction

Melo¹,

Gonçalves²,

Rabbani³

et al. 2015

Genet. Mol. Res.

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ABSTRACT. The goal of this study was to characterize the structure of two natural populations of the coral tree using RAPD and ISSR markers. The study evaluated all individuals in two different areas in the northeastern region of Brazil: the first was in the riparian area, 10 km x 100 m along the edge of the lower São Francisco River, and the second was in the municipality of Pinhão, in a semiarid region between the municipalities of Neópolis and Santana do São Francisco. We used all the coral trees present in those two areas (37 individuals). The results of the RAPD and ISSR markers were highly congruent, supporting the reliability of the techniques (2015) used. Similarity was estimated using the Jaccard arithmetic complement index. A dendrogram was constructed using the unweighted pair group method with arithmetic mean cluster algorithm, and the robustness of the data was bootstrapped with 5000 replicates. A principal coordinate analysis was performed on the basis of Jaccard coefficients. The total genetic variation observed was 21%, corresponding to the variation between the populations, and 79% of the variation was observed within the populations.

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“…Neste sentido, estudos sobre diversidade e estrutura genética de populações de plantas medicinais, bem como a relação destes com o manejo das mesmas se fazem necessários. São exemplos disso os estudos de Mariot et al (2002), Steenbock & Reis (2004), Bertoni et al (2010), Baldauf et al (2013) e Harish et al (2014.…”

Section: Introductionunclassified

Diversidade e estrutura genética de populações de Varronia curassavica Jacq. em restingas da Ilha de Santa Catarina

Hoeltgebaum

Bernardi

Montagna

et al. 2015

Rev. bras. plantas med.

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RESUMO:Varronia curassavica Jacq. (Boraginaceae) está presente na vegetação de restinga e apresenta relevantes propriedades medicinais. A espécie é explorada especialmente por comunidades locais e pela indústria farmacêutica, porém, carece de informações ecológicas e genéticas a seu respeito. Nesse contexto, o estudo foi conduzido com o objetivo de caracterizar a diversidade genética de três populações de V. curassavica em áreas de restinga na Ilha de Santa Catarina. Foram coletadas folhas de 50 indivíduos adultos em cada uma das três áreas de estudo e as frequências alélicas das populações foram obtidas a partir de 14 locos alozímicos. Foram encontrados 25 alelos distintos nas três populações, sendo dois alelos exclusivos. As populações apresentaram diversidade genética média de 0,111 e índice de fixação médio de -0,060 (-0,273 até 0,222). Os níveis de diversidade são intermediários, semelhantes aos exibidos por espécies da mesma família ou de características ecológicas semelhantes. Os índices de fixação foram todos significativos e discrepantes entre as populações, sendo que duas delas apresentaram excesso de heterozigotos. A divergência genética interpopulacional foi significativa e igual a 0,079, considerada moderada e sugerindo efeitos de subdivisão populacional. Os níveis de diversidade genética encontrados e a redução populacional causada pela redução e fragmentação dos habitats em que a espécie ocorre sugerem medidas de conservação ex situ e demandam maior rigor na proteção legal de áreas de proteção permanente.Palavras-chave: conservação, erva-baleeira, espécie medicinal, tamanho efetivo.ABSTRACT: Genetic diversity and structure of Varronia curassavica Jacq. populations in the restinga of Santa Catarina Island. The Varronia curassavica Jacq. (Boraginaceae) is present in restinga vegetation and shows relevant medicinal properties. The species is exploited by local communities and by the pharmaceutical industry; however, it lacks ecological and genetic information. Thus, this study aimed to characterize the genetic diversity of three V. curassavica populations in restinga areas of Santa Catarina Island. Leaves of 50 adult individuals were sampled in each of the three study areas and the allelic frequencies were obtained from 14 allozyme loci. Twenty-five different alleles were found in the three populations, two of them being exclusive. The populations showed, on average, a genetic diversity of 0,111 and a fixation index of -0,060 (-0,273 to 0,222). The diversity levels are intermediary, similar to those ones owned by species of the same family or with similar ecological traits. The fixation indexes were all significant and discrepant among the populations, with two of them showing excess of heterozygotes. The genetic divergence among populations was significant and equal to 0,079, which is considered moderate and suggests effects of population subdivision. The levels of genetic diversity found and the population decrease caused by reduction and fragmentation of habitats in which the species are present i...

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Genetic diversity among natural populations of Mandevilla velutina

Cited by 9 publications

References 12 publications

In vitro conservation of ornamental plants

In vitro conservation of ornamental plants

Populations of Erythrina velutina Willd. at risk of extinction

Diversidade e estrutura genética de populações de Varronia curassavica Jacq. em restingas da Ilha de Santa Catarina

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