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Genetic structure and gene flow in Eugenia dysenterica DC in the Brazilian Cerrado utilizing SSR markers
Zucchi, Maria Imaculada; Brondani, Rosana Pereira Vianello; Pinheiro, Joséé Baldin; Chaves, Lázaro José; Coelho, Alexandre Siqueira Guedes; Vencovsky, Roland.
  • Zucchi, Maria Imaculada; Universidade de São Paulo. ESALQ. Departamento de Genética. Piracicaba. BR
  • Brondani, Rosana Pereira Vianello; Embrapa Arroz e Feijão. Santo António de Goias. BR
  • Pinheiro, Joséé Baldin; Universidade Federal de Goias. Escola de Agronomia. Goiânia. BR
  • Chaves, Lázaro José; Universidade Federal de Goias. Escola de Agronomia. Goiânia. BR
  • Coelho, Alexandre Siqueira Guedes; Universidade Federal de Goiás. Instituto de Ciências Biológicas. Campus Samambaia. Goiânia. BR
  • Vencovsky, Roland; Universidade de São Paulo. ESALQ. Departamento de Genética. Piracicaba. BR
Genet. mol. biol ; 26(4): 449-457, dec. 2003. tab, graf
Article in English | LILACS | ID: lil-355290
RESUMO
The ''cagaita tree'' (Eugenia dysenterica) is a plant found widespread in the Brazilian Cerrado. Its fruit is used for popular consumption and for industrial purposes. This study opens a new perspective for the generation of population genetic data and parameters estimates for devising sound collection and conservation procedures for Eugenia dysenterica. A battery of 356 primer pairs developed for Eucalyptus spp. was tested on the ''cagaita tree''. Only 10 primer pairs were found to be transferable between the two species. Using a polyacrilamide gel, an average of 10.4 alleles per locus was detected, in a sample of 116 individuals from 10 natural ''cagaita tree'' populations. Seven polymorphic loci allowed estimation of genetic parameters, including expected average heterozygosity He = 0,442, among population diversity, R ST = 0,268 and gene flow Nm = 0,680. Results indicated a potential of SSR locus transferability developed for Eucalyptus to other species of different genera, such as in the case of the ''cagaita tree''. The high genetic diversity among populations detected with SSR markers indicated that these markers are highly sensitive to detect population structure. Estimated Nm values and the existence of private alleles indicated reduced gene flow and consequently possible damage to the metapopulation structure.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Trees / Microsatellite Repeats Country/Region as subject: South America / Brazil Language: English Journal: Genet. mol. biol Journal subject: Genetics Year: 2003 Type: Article Affiliation country: Brazil Institution/Affiliation country: Embrapa Arroz e Feijão/BR / Universidade Federal de Goias/BR / Universidade Federal de Goiás/BR / Universidade de São Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Trees / Microsatellite Repeats Country/Region as subject: South America / Brazil Language: English Journal: Genet. mol. biol Journal subject: Genetics Year: 2003 Type: Article Affiliation country: Brazil Institution/Affiliation country: Embrapa Arroz e Feijão/BR / Universidade Federal de Goias/BR / Universidade Federal de Goiás/BR / Universidade de São Paulo/BR