2002
DOI: 10.1590/s1517-83822002000200006
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Genetic characterization of isolates of the basidiomycete Agaricus blazei by RAPD

Abstract: The genetic divergence of five isolates of Agaricus blazei was determined based on RAPD data. Results indicate that there is little genetic variability among the commercialized strains and that RAPD is a feasible and low cost technique that can be used to characterize this fungus.

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Cited by 30 publications
(20 citation statements)
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References 9 publications
(7 reference statements)
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“…Molecular techniques based in DNA markers, such as the random amplified polymorphic DNA (RAPD) (2,23) and the amplified fragment length polymorphism (AFLP) (18,21), are very informative and cost-effective approaches for assessing genetic diversity of a wide range of fungi, such as Agaricus blazei (6), Alternaria species (1,3,9), Erythricium salmonicolor (19), Lactobacillus (20), Metharizium anisopliae (8), and Trypanosoma (13). The main advantage of such techniques over the one-gene based assessment is the genome-wide biodiversity which does not require prior availability of sequences on databases and are therefore readily applicable to any organism.…”
Section: Introductionmentioning
confidence: 99%
“…Molecular techniques based in DNA markers, such as the random amplified polymorphic DNA (RAPD) (2,23) and the amplified fragment length polymorphism (AFLP) (18,21), are very informative and cost-effective approaches for assessing genetic diversity of a wide range of fungi, such as Agaricus blazei (6), Alternaria species (1,3,9), Erythricium salmonicolor (19), Lactobacillus (20), Metharizium anisopliae (8), and Trypanosoma (13). The main advantage of such techniques over the one-gene based assessment is the genome-wide biodiversity which does not require prior availability of sequences on databases and are therefore readily applicable to any organism.…”
Section: Introductionmentioning
confidence: 99%
“…However, it is probable that due to different ecological conditions between their origin countries, it is still necessary to develop a proper technology for cultivating this mushroom because its production level is still very low compared to that of A. bisporus . Therefore, several research projects have been developed that aim to find better composting processes and casing layer materials (Silva, E. et al, 2007(Silva, E. et al, , 2009Cavalcante et al, 2008;Siqueira et al, 2009;Colauto et al, 2010), as well as to determine the genetic diversity of different strains used in the country (Colauto et al, 2002;Tomizawa et al, 2007). Besides this research, this species also probably has a life cycle different from classic dicariotic basidiomycetes, which makes it an excellent research system for elucidating the sexual behavior of atypical basidiomycetes (Dias et al, 2008).…”
Section: Medicinal Mushroom (Agaricus Brasiliensis)mentioning
confidence: 99%
“…Para análise, foram consideradas apenas as bandas fortes. Os dados foram analisados no programa NTSYS-PC 2.1, o qual construiu uma matriz de similaridade, utilizando o coeficiente de Dice (ROHLF, 1992 comerciais (CHIU et al, 1996;COLAUTO et al, 2002;KHUSH et al, 1992;RAMIREZ et al, 2001;ZHANG & MOLINA, 1995 Os isolados CS7 (Porto Alegre, RS), CS5 (Araçatuba, SP) e CS2 (Belo Horizonte, MG) formaram grupos distintos, apresentando níveis de similaridade genética abaixo de 96%, com médias de 91,3%, 88,7% e 60,6%, respectivamente. De todos eles, o isolado CS2 foi o que apresentou a maior divergência genética, em relação aos demais, apresentando similaridade variando de 59% (CS1 e CS3) a 65% (CS5) (Tabela 4).…”
Section: Foram Utilizados Nove Isolados De Agaricus Blazeiunclassified
“…Colauto et al (2002), caracterizando 5 isolados do cogumelo A. blazei também por análise de RAPD, verificaram que 3 deles (ABL 97/11, ABL 99/25, ABL 99/29) não apresentaram qualquer divergência, sendo caracterizados como isolados de uma mesma origem, apesar de terem sido obtidos de locais diferentes do País. Os resultados encontrados por Colauto et al (2002), no entanto, contradizem com os resultados obtidos neste trabalho, uma vez que foi encontrada uma divergência genética de 6% entre os isolados CS5 (ABL 99/25) e CS7 (ABL 99/29) e isto pode ser justificado, uma vez que um pequeno número de primers (8 primers) e isolados foram utilizados por estes autores, não encontrando nenhuma divergência genética entre eles. Contudo, os mesmos autores recomendaram que estudos adicionais deveriam ainda, ser realizados utilizando um maior número de primers e também novos isolados, com o intuito se avaliar melhor a variabilidade genética da espécie A. blazei.…”
Section: Foram Utilizados Nove Isolados De Agaricus Blazeiunclassified
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