Nuclear Sequence Variation
Mostrando 1-12 de 84 artigos, teses e dissertações.
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1. Dispersion of transposable elements and multigene families: Microstructural variation in Characidium (Characiformes: Crenuchidae) genomes
Abstract Eukaryotic genomes consist of several repetitive DNAs, including dispersed DNA sequences that move between chromosome sites, tandem repeats of DNA sequences, and multigene families. In this study, repeated sequences isolated from the genome of Characidium gomesi were analyzed and mapped to chromosomes in Characidium zebra and specimens from two popu
Genet. Mol. Biol.. Publicado em: 16/07/2018
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2. Contribution of WUSCHEL-related homeobox (WOX) genes to identify the phylogenetic relationships among Petunia species
Abstract Developmental genes are believed to contribute to major changes during plant evolution, from infrageneric to higher levels. Due to their putative high sequence conservation, developmental genes are rarely used as molecular markers, and few studies including these sequences at low taxonomic levels exist. WUSCHEL-related homeobox genes (WOX) are trans
Genet. Mol. Biol.. Publicado em: 20/10/2016
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3. Variants of the HNF1α gene: a molecular approach concerning diabetic patients from southern Brazil
Maturity Onset Diabetes of the Young (MODY) presents monogenic inheritance and mutation factors which have already been identified in six different genes. Given the wide molecular variation present in the hepatocyte nuclear factor-1α gene (HNF1α) MODY3, the aimof this study was to amplify and sequence the coding regions of this gene in seven patients from
Genet. Mol. Biol.. Publicado em: 09/10/2012
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4. Evidence that the Ceratobasidium-like white-thread blight and black rot fungal pathogens from persimmon and tea crops in the Brazilian Atlantic Forest agroecosystem are two distinct phylospecies
The white-thread blight and black rot (WTBR) caused by basidiomycetous fungi of the genus Ceratobasidium is emerging as an important plant disease in Brazil, particularly for crop species in the Ericales such as persimmon (Diospyros kaki) and tea (Camellia sinensis). However, the species identity of the fungal pathogen associated with either of these hosts i
Genetics and Molecular Biology. Publicado em: 17/05/2012
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5. Worldwide genetic variation at the 3´-UTR region of the LDLR gene : possible influence of natural selection
The low density lipoprotein receptor gene (LDLR) contains many Alu insertions, and is especially Alu-rich at its 3 -untranslated region (3 -UTR). Previous studies suggested that the LDLR 3 -UTR could regulate gene expression by the stabilization of its mRNA. Given the faster Alu evolutionary rate, and wondering about its consequences in a possibly regulatory
Publicado em: 2011
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6. CA88, a nuclear repetitive DNA sequence identified in Schistosoma mansoni, aids in the genotyping of nine Schistosoma species of medical and veterinary importance
CA88 is the first long nuclear repetitive DNA sequence identified in the blood fluke, Schistosoma mansoni. The assembled S. mansoni sequence, which contains the CA88 repeat, has 8,887 nucleotides and at least three repeat units of approximately 360 bp. In addition, CA88 also possesses an internal CA microsatellite, identified as SmBr18. Both PCR and BLAST an
Memórias do Instituto Oswaldo Cruz. Publicado em: 2010-07
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7. The use and limits of ITS data in the analysis of intraspecific variation in Passiflora L. (Passifloraceae)
The discovery and characterization of informative intraspecific genetic markers is fundamental for evolutionary and conservation genetics studies. Here, we used nuclear ribosomal ITS sequences to access intraspecific genetic diversity in 23 species of the genus Passiflora L. Some degree of variation was detected in 21 of these. The Passiflora and Decaloba (D
Publicado em: 2010
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8. Genetic diversity of the Cryptococcus species complex suggests that Cryptococcus gattii deserves to have varieties
The Cryptococcus species complex contains two sibling taxa, Cryptococcus neoformans and Cryptococcus gattii. Both species are basidiomycetous yeasts and major pathogens of humans and other mammals. Genotyping methods have identified major haploid molecular types of C. neoformans (VNI, VNII, VNB and VNIV) and of C. gattii (VGI, VGII, VGIII and VGIV). To inves
Publicado em: 2010
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9. The use and limits of ITS data in the analysis of intraspecific variation in Passiflora L. (Passifloraceae)
The discovery and characterization of informative intraspecific genetic markers is fundamental for evolutionary and conservation genetics studies. Here, we used nuclear ribosomal ITS sequences to access intraspecific genetic diversity in 23 species of the genus Passiflora L. Some degree of variation was detected in 21 of these. The Passiflora and Decaloba (D
Genetics and Molecular Biology. Publicado em: 18/12/2009
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10. Evolutionary history of Phakopsora pachyrhizi (the Asian soybean rust) in Brazil based on nucleotide sequences of the internal transcribed spacer region of the nuclear ribosomal DNA
Phakopsora pachyrhizi has dispersed globally and brought severe economic losses to soybean growers. The fungus has been established in Brazil since 2002 and is found nationwide. To gather information on the temporal and spatial patterns of genetic variation in P. pachyrhizi , we sequenced the nuclear internal transcribed spacer regions (ITS1 and ITS2). T
Genetics and Molecular Biology. Publicado em: 19/11/2008
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11. Citrus plastid-related gene profiling based on expressed sequence tag analyses
Plastid-related sequences, derived from putative nuclear or plastome genes, were searched in a large collection of expressed sequence tags (ESTs) and genomic sequences from the Citrus Biotechnology initiative in Brazil. The identified putative Citrus chloroplast gene sequences were compared to those from Arabidopsis, Eucalyptus and Pinus. Differential expres
Genetics and Molecular Biology. Publicado em: 2007
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12. Genetic diversity and DNA content of three South American and three Eurasiatic Trifolium species
Six species of Trifolium (T. polymorphum Poir., T. riograndense Burkart, T. argentinense Speg., T. medium L., T. pratense L. and T. repens L.) were analyzed using inter-simple sequence repeats (ISSR) markers. Six selected primers generated 186 polymerase chain reaction (PCR) products exploring 112 loci in 34 genotypes analyzed with molecular sizes ranging fr
Genetics and Molecular Biology. Publicado em: 2007