Intergenic Ribosomal Spacer Region
Mostrando 1-12 de 60 artigos, teses e dissertações.
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1. Taxonomy and evolutionary relationships of Passiflora subg. Decaloba supersect. Decaloba sect. Xerogona (Passifloraceae): contributions of palynological, morphological and molecular studies
Passiflora subg. Decaloba supersect. Decaloba sect. Xerogona (Passifloraceae) is a tropical and subtropical group comprising 14 species that occur in tropical biomes throughout Latin America, including the Atlantic Forest. The section Xerogona comprises herbaceous vines characterized by a lack of petiole glands on their leaves, of bracts and of ocelli on the
Acta Bot. Bras.. Publicado em: 2014-09
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2. Analyses of the 16S-23S intergenic region of the phytoplasma causing the sugarcane white leaf disease in Yunnan Province, China
Sugarcane white leaf (SCWL) is an important disease caused by a phytoplasma. In Baoshan, Yunnan, China, SCWL was firstly observed in 2012, and has extended its area of occurrence to 600 hm² . Up to 52% of the plants may become diseased in a field and even complete loss of cane yield may result in the heavily infected fields, posing a serious threat to Yunna
Trop. plant pathol.. Publicado em: 2014-04
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3. EF-1α gene and IGS rDNA sequencing of Fusarium oxysporum f. sp. vasinfectum and F. oxysporum f. sp. phaseoli reveals polyphyletic origin of strains
The fungi Fusarium oxysporum f. sp. vasinfectum (Fov) and F. oxysporum f. sp. phaseoli (Fop) are important pathogens that cause wilt on cotton and common bean, respectively. In the present study, phylogenetic trees constructed with partial sequences of the translation elongation factor gene and ribosomal intergenic spacer region of Brazilian Fov and Fop stra
Trop. plant pathol.. Publicado em: 2014-02
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4. Potential use of molecular-typing methods for the identification and characterization of salmonella enterica serotypes isolated in the poultry production chain
Salmonella is widespread in nature and can be found in all links of the poultry production chain. Due to its high impact on meat processing, techniques for the rapid detection and reproducible characterization of Salmonella serotypes in foods are needed. The present study investigated the potential of molecular profiling to identify and differentiate 15 Salm
Rev. Bras. Cienc. Avic.. Publicado em: 2012-09
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5. Análise da diversidade fenotípica e genotípica de Enterococcus spp. isolados de fezes de suínos = Phenotypic and genotypic diversity in Enterococcus spp. isolated from pig feces / Phenotypic and genotypic diversity in Enterococcus spp. isolated from pig feces
O gênero Enterococcus está amplamente distribuído no meio ambiente e é geralmente encontrado nas fezes de animais de sangue quente. Todavia, a microbiota do trato gastrintestinal destes animais vem sofrendo alterações quanto à composição de espécies, devido ao uso de antimicrobianos. O presente trabalho teve como objetivo avaliar a diversidade de e
Publicado em: 2010
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6. Desenvolvimento de um método de PCR específico para detecção de Aspergillus Flavus aflatoxigênico em grãos brasileiros
In general, foods are extremely susceptible to contamination by mycotoxin-producing fungi that affect human and animal health, with major losses common in agricultural production in Brazil. Aflatoxins are considered the most important group of mycotoxins, because of their high toxicity, hepatic-cancer-inducing properties, and common occurrence in various gra
Publicado em: 2009
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7. Molecular approaches to detect cyanobacteria and their microcystins producing genotypes in Billings and Guarapiranga reservoirs, São Paulo, Brazil / Abordagens moleculares para detectar cianobactérias e seus genótipos produtores de microcistinas presentes nas represas Billings e Guarapiranga, São Paulo, Brasil
Cyanobacterial blooms in water reservoirs used for human consumption are frequent nowadays and are usually attributed to the increasing water eutrophization. In recent years, the appearance of toxin-producing cyanobacterial strains has concerned managers of water quality since these toxins represent a public health risk. Early detection of the presence of to
Publicado em: 2004
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8. Intergenic and external transcribed spacers of ribosomal RNA genes in lizard-infecting Leishmania: molecular structure and phylogenetic relationship to mammal-infecting Leishmania in the subgenus Leishmania (Leishmania)
To establish the relationships of the lizard- and mammal-infecting Leishmania, we characterized the intergenic spacer region of ribosomal RNA genes from L. tarentolae and L. hoogstraali. The organization of these regions is similar to those of other eukaryotes. The intergenic spacer region was approximately 4 kb in L. tarentolae and 5.5 kb in L. hoogstraali.
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-07
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9. Identification of Biomphalaria havanensis and Biomphalaria obstructa populations from Cuba using polymerase chain reaction and restriction fragment length polymorphism of the ribosomal RNA intergenic spacer
In Cuba, several Biomphalaria species have been reported such as B. orbignyi, B. schrammi, B. helophila, B. havanensis and B. peregrina; only the latter three are considered as potential hosts of Schistosoma mansoni. The specific identification of Biomphalaria species is based on anatomical and morphological characters of genital organs and shells. The corre
Memórias do Instituto Oswaldo Cruz. Publicado em: 2001-07
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10. Structure and evolution of the 4.5-5S ribosomal RNA intergenic region from Glycine max (soya bean).
The nucleotide sequence for the 4.5-5S ribosomal DNA region from the chloroplastids of soya beans was determined as the basis of further comparative studies on the structure and evolution of this intergenic region. Comparisons with other plant sequences as well as equivalent sequences in eubacteria suggest that the longer internal transcribed spacer regions
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11. Sequencing of the Ribosomal Intergenic Spacer Region for Strain Identification of Porphyromonas gingivalis
The ribosomal intergenic spacer regions (ISRs) of 19 laboratory strains and 30 clinical samples of Porphyromonas gingivalis were amplified by PCR and sequenced to provide a strain identifier. The ISR is a variable region of DNA located between the conserved 16S and 23S rRNA genes. This makes it an ideal locus for differentiation of strains within a species:
American Society for Microbiology.
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12. Comparative analysis of the 16S to 23S ribosomal intergenic spacer sequences of Bacillus thuringiensis strains and subspecies and of closely related species.
Bacillus thuringiensis spacer regions between the 16S and 23S rRNAs were amplified with conserved primers, designated 19-mer and 23-mer primers. A spacer region of 144 bp was determined for all of 6 B. thuringiensis strains, 7 B. thuringiensis subspecies, and 11 B. thuringiensis field isolates, as well as for the closely related species Bacillus cereus and B