ANÁLISE FILOGENÉTICA DO GENE COX2 DA LEVEDURA DEKKERA BRUXELLENSIS
ANÁLISE FILOGENÉTICA DO GENE COX2 DA LEVEDURA DEKKERA BRUXELLENSIS
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DOI: https://doi.org/10.22533/at.ed.814112402102
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Palavras-chave: microbiologia, levedura, bioinformática, genética molecular.
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Keywords: molecular biology, yeasts, microbiology, bioinformatics.
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Abstract: The yeast Dekkera bruxellensis, the teleomorph of Brettanomyces bruxellensis, is the main of distilleries spoilage worldwide, provoking the reduction of the productivity of ethanol and, consequently, causing economical losses to industries that use sugar cane juice. Despite of this importance, few genetic studies of this yeast can be found in the scientific literature. The recent works of our group show that this yeast presents a great adaptability to the industrial process and we propose wild genomic analysis to identify the responsible factors for this characteristic. In the present work, we evaluated the polymorphism of the COX2 gene that encodes the cytochrome oxidase II. The results showed an unexpected higher similarity of the COX2 nucleotides sequences of industrial isolates of D. bruxellensis with its orthologous in D. custersii than with the COX2 sequence of the D. bruxellensis type strain deposited at NCBI. The explanation for that similarity requires further investigation. We also started the in silico comparative analysis of the mitochondrial genome of all ascomicota yeast sequenced so far, whose sequences are deposited at the NCBI database (http://www.ncbi.nlm.nih.gov). Thus, a putative physical map of the mitocondrial genome of this clade was possible. Six species presenting nuclear genomic similarity with D. bruxellensis had been submitted to the alignments through the computational program Mega v. 4.0.The gene order was defined as L-rRNA COII COIII S-rRNA COI ATPase 8 ATPase 6 Cyt b 9 ATPase 9 Var 1, based in the genome of Saccharomyces cereviseae. The program CODEHOP and Codon Usage was used with the objective to refine the design of degenerated primers in order to amplify D. bruxellensis ortholougous genes. The alignments had shown representative for construction of primers, a time that had a good conservation between the nearly genetic sequences of the structural genes previously cited. These dates provide resource to further analyses of the population genetics and evolution of D. bruxellensis and of the genetic bases of its physiological capabilities
- Felipe Moraes Alecrim
- Edvânia Maria Soares da Silva
- Maria Isabel Pereira Marques
- Paulo Sérgio Rocha Lima
- Marlon Alves Cordeiro
- Karla Roberta Alves de Carvalho
- Maria Júlia Florentino dos Santos
- Valdilene Apolônia da Silva Domingos
- Gerlaine Cardoso dos Santos
- Sidnei Soares e Silva
- Luiz Pinheiro Filho
- Jailson da Silva