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Registros recuperados: 7
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Genetic relatedness among wild, domestic and Brazilian fighting roosters Rev. Bras. Ciênc. Avic.
Rodrigues,FP; Queiroz,SA; Duarte,JMB.
Except for the meat- and egg-type strains used in commercial poultry farms in Brazil, there are no scientific reports about the origin of birds from the genus Gallus that have been introduced in this country with domestication or fighting purposes. Therefore, the aim of this study was to identify the position of the Brazilian Game Bird in the phylogenetic tree of the genus Gallus by nucleotide sequence analysis of the mitochondrial DNA D-loop region. The results indicate that fighting roosters comprise two different clusters within the species Gallus gallus domesticus. One of the clusters is related to the wild ancestors, while the other one is more related to the birds raised by the poultry industry. In conclusion, Brazilian fighting roosters have...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fighting roosters; Gallus gallus; Phylogenetic tree; Wild roosters.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200003
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Identifying the viral genes encoding envelope glycoproteins for differentiation of Cyprinid herpesvirus 3 isolates ArchiMer
Han,; Kim, Ji Hyung; Renault, Tristan; Choresca, Casiano, Jr.; Shin, Sang Phil; Jun, Jin Woo; Park, Se Chang.
Cyprinid herpes virus 3 (CyHV-3) diseases have been reported around the world and are associated with high mortalities of koi (Cyprinus carpio). Although little work has been conducted on the molecular analysis of this virus, glycoprotein genes identified in the present study seem to be valuable targets for genetic comparison of this virus. Three envelope glycoprotein genes (ORF25, 65 and 116) of the CyHV-3 isolates from the USA, Israel, Japan and Korea were compared, and interestingly, sequence insertions or deletions were observed in these target regions. In addition, polymorphisms were presented in microsatellite zones from two glycoprotein genes (ORF65 and 116). In phylogenetic tree analysis, the Korean isolate was remarkably distinguished from USA,...
Tipo: Text Palavras-chave: Cyprinid herpes virus 3; Glycoprotein gene; Koi herpesvirus; Microsatellite; Polymorphism; Phylogenetic tree.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00118/22940/20768.pdf
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In silico phylogenetic and virulence gene profile analyses of avian pathogenic Escherichia coli genome sequences. Repositório Alice
ROJAS, T. C. G.; MALUTA, R. P.; KOENIGKAN, L. V.; SILVEIRA, W. D. da.
Avian pathogenic Escherichia coli (APEC) infections are responsible for significant losses in the poultry industry worldwide. A zoonotic risk has been attributed to APEC strains because they present similarities to extraintestinal pathogenic E. coli (ExPEC) associated with illness in humans, mainly urinary tract infections and neonatal meningitis. Here, we present in silico analyses with pathogenic E. coli genome sequences, including recently available APEC genomes. The phylogenetic tree, based on multi-locus sequence typing (MLST) of seven housekeeping genes, revealed high diversity in the allelic composition. Nevertheless, despite this diversity, the phylogenetic tree was able to cluster the different pathotypes together. An in silico virulence gene...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Árvore filogenética; Avian pathogenic Escherichia coli; Tipagem de sequência multilocus; Análise in silico; Genes associados à virulência; Multi-locus Sequence Typing; Phylogenetic tree; Virulence genes; Escherichia coli.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1077504
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ITS-rDNA phylogeny of Colletotrichum spp. causal agent of apple Glomerella leaf spot Ciência Rural
Giaretta,Diorvania Ribeiro; Bogo,Amauri; Coelho,Cileide Maria Medeiros; Guidolin,Altamir Frederico; Dantas,Adriana Cibele de Mesquita; Gomes,Eliane Aparecida.
Several diseases have affected apple production, among them there is Glomerella leaf spot (GLS) caused by Colletotrichum spp. The first report of this disease in apple was in plants nearby citrus orchards in São Paulo State, Brazil. The origin of this disease is still not clear, and studies based on the molecular phylogeny could relate the organisms evolutionarily and characterize possible mechanisms of divergent evolution. The amplification of 5.8S-ITS (Internal Transcribed Spacer) of rDNA of 51 pathogenic Colletotrichum spp. isolates from apples, pineapple guava and citrus produced one fragment of approximately 600 bases pairs (bp) for all the isolates analyzed. The amplified fragments were cleaved with restriction enzymes, and fragments from 90 to 500bp...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pineapple guava; Citrus; Molecular phylogeny; In silico; Phylogenetic tree.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000400010
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Molecular studies of the Brazilian infectious bronchitis virus isolates Rev. Bras. Ciênc. Avic.
Abreu,JT; Mourão,MM; Santos,CE; Veloso,CJM; Resende,JS; Flatschart,RB; Folgueras-Flatschart,AV; Júnior,SN; Santoro,MM; Mendes,ACR; Franco,GR; Silva,A; Campos,AB; Fernandez,S.
Avian infectious bronchitis virus (IBV) isolates have been widely characterized by reverse transcription followed by polymerase chain reaction and DNA sequencing. In present study, these techniques were applied to three viral genomic regions comprising the complete and/or a partial S1 segment, S2 and nucleocapsid genes. DNA sequences from viral isolates obtained from 1972 to 1989 and from 2006 to 2008 were compared. High similarity (>90%) was observed among some of the genomic segments, including S1 hypervariable region, which could suggest a common origin or ancestry. DNA sequences from S2 and N protein genes obtained from different infected tissues of the same flock were analyzed, and a clear segregation between respiratory and intestinal tract was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Infectious bronchitis virus; Genotyping; Spike glycoprotein; Nucleocapsid; Phylogenetic tree.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200005
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Phylogenetic systematics of Hoya (Apocynaceae) Naturalis
Wanntorp, L..
Hoya with perhaps 300 species is one of the most diverse angiosperm genera in the tropical rainforests of Southeast Asia and New Guinea. Knowledge of the number of species and their relationships is still very unsatisfactory. Floral characters have been used to subdivide the genus into sections, although none of these groups were based on phylogenetic relationships. Recently, molecular phylogenetic studies have shed new light on the intrageneric relationships of the genus by identifying three main monophyletic clades, in addition to a core Hoya group that includes most of the species examined. One clade includes New Guinean/Australian species, while the other two, the Acanthostemma and the Eriostemma clades, mainly correspond to existing sections. I here...
Tipo: Article / Letter to the editor Palavras-chave: Acanthostemma; Core Hoya; Eriostemma; Hoya; Molecular systematics; New Guinean/Australian clade; Phylogenetic tree.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/526034
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Study on the polymorphism of POU1F1 gene in sheep R. Bras. Zootec.
Bai,Jun Yan; Wang,Xu; Yang,You Bing; Zhang,Xiao Hui; Pang,You Zhi; Li,Hong Wei.
ABSTRACT In this study, POU1F1 gene polymorphism was detected in five sheep populations (large-tailed Han, small-tailed Han, Yuxi fat-tailed, Lanzhou large-tailed, and Mongolian sheep), using DNA pooling and sequencing, to provide theoretical basis for the breeding of excellent sheep varieties. Three single-nucleotide polymorphism (SNP) loci of POU1F1 gene were detected in five sheep populations, namely C355T (C/T), C71G (C/G), and C330G (C/G). C and T frequencies of C355T were 0.67/0.33, 0.81/0.19, 0.67/0.33, 1.00/0.00, and 0.93/0.07, respectively, in large-tailed Han, small-tailed Han, Yuxi fat-tailed, Mongolian, and Lanzhou large-tailed sheep. C of C355T locus was the dominant allele in five sheep populations. C and G allele frequencies of C330G locus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: DNA pooling; Phylogenetic tree; Sheep; SNP.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001000604
Registros recuperados: 7
Primeira ... 1 ... Última
 

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