Alpha Proteobacteria
Mostrando 1-12 de 122 artigos, teses e dissertações.
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1. Filogenia do endosimbionte Wolbachia em Trichogramma, an alpha-proteobacteria (Rickettsiae)
Resumo Endosimbiontes do gênero Wolbachia (Hertig) são extensivamente estudados em uma ampla gama de organismos e são conhecidos por serem transmitidos via citoplasma do ovo hospedeiro para seu descendente. Wolbachia pode causar vários tipos de alterações reprodutivas nos artrópodes. Nas espécies de Trichogramma, a reprodução partenogenética induz
Braz. J. Biol.. Publicado em: 09/11/2017
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2. Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum
The objective of this study was to evaluate the degradation of Linear Alkylbenzene Sulfonate (LAS) in anaerobic sequencing batch reactor (ASBR) under denitrifying conditions using swine sludge as inoculum. The reactor was operated for 104 days with synthetic substrate containing nitrate, and LAS was added later (22 mg/L). Considering the added mass of the LA
Braz. arch. biol. technol.. Publicado em: 06/03/2015
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3. Large scale distribution of bacterial communities in the upper Paraná River floodplain
A bacterial community has a central role in nutrient cycle in aquatic habitats. Therefore, it is important to analyze how this community is distributed throughout different locations. Thirty-six different sites in the upper Paraná River floodplain were surveyed to determine the influence of environmental variable in bacterial community composition. The site
Braz. J. Microbiol.. Publicado em: 2014-12
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4. Detecção microbiológica e molecular da bacteremia por Bartonella spp. em gatos / Molecular and microbiological detection of Bartonella spp. bacteremia in cats
Atualmente o genero Bartonella compreende pelo menos 31 especies e subespecies, sendo 15 delas conhecidamente patogenicas ao homem. Tres especies de Bartonella estao associadas ao maior numero de manifestacoes clinicas em seres humanos. Sao elas: Bartonella bacilliformis, Bartonella quintana e Bartonella henselae. A B. henselae e a bacteria mais associada a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/08/2012
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5. Impacto da presenÃa de atrazina na comunidade bacteriana do solo / Impact of atrazine on bacteriological soil community
Chemical contamination removal in soil and water depends on microbiological community that is able to degrade these compounds. There is a great evolutionary interest on studying microorganisms that metabolize the xenobiotic ones, since they have relatively been seen as new in the last five decades. Little is known about structure variation of microbiological
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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6. A prevalent alpha-proteobacterium Paracoccus sp. in a population of the Cayenne ticks (Amblyomma cajennense) from Rio de Janeiro, Brazil
As Rocky Mountain Spotted Fever is the most common tick-borne disease in South America, the presence of Rickettsia sp. in Amblyomma ticks is a possible indication of its endemicity in certain geographic regions. In the present work, bacterial DNA sequences related to Rickettsia amblyommii genes in A. dubitatum ticks, collected in the Brazilian state of Mato
Genet. Mol. Biol.. Publicado em: 16/10/2012
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7. A infecção por Wolbachia afeta o comportamento de Trichogramma atopovirilia?
Formas unissexuais de Trichogramma têm despertado a atenção de pesquisadores devido as potenciais vantagens deste parasitóide como agente de controle biológico. O estudo do "Fitness" tem sido avaliado e entender o custo de ser infectado por Wolbachia ajudará em determinar se formas infectadas por Wolbachia (unisexuais) são realmente melhores que as se
Brazilian Journal of Biology. Publicado em: 16/04/2010
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8. Primeiro registro de Wolbachia (Proteobacteria, Rickettsiales) em isópodos terrestres na América do Sul : prevalência, aspectos filogenéticos de suas linhagens e seu possível impacto sobre a estrutura populacional estimada através de um loco mitocondrial em duas espécies do gênero Balloniscus (Crustacea: Oniscidea)
Embora muitos aspectos sobre a história de vida dos isópodos terrestres na América do Sul tenham sido investigados, alguns ainda são desconhecidos. Entre estes, está a relação simbiótica entre os isópodos terrestres e Wolbachia pipientis, uma espécie de alpha-proteobactéria, considerada um parasito intracelular obrigatório que infecta espécies d
Publicado em: 2010
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9. Taxonomia e diversidade genética de rizóbios microssimbiontes de distintas leguminosas com base na análise polifásica (Box-PCR e 16 S RNAr) e na metodologia de MLSA
The term rhizobia is generically applied to bacteria capable of fixing the atmospheric nitrogen (N2) and converting it to a form assimilable by the plant, when in symbiosis with plants of the Leguminosae family. However, besides their ecological and economic importance, the rhizobia have not been subject of many studies. Based on the data obtained with t
Publicado em: 2008
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10. Differences in LexA regulon structure among Proteobacteria through in vivo assisted comparative genomics
The LexA regulon encompasses an ensemble of genes involved in preserving cell viability under massive DNA damage and is present in most bacterial phyla. Up to date, however, the scope of this network had only been assessed in the Gamma Proteobacteria. Here, we report the structure of the LexA regulon in the Alpha Proteobacteria, using a combined approach tha
Oxford University Press.
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11. Bartonella vinsonii subsp. berkhoffii and Related Members of the Alpha Subdivision of the Proteobacteria in Dogs with Cardiac Arrhythmias, Endocarditis, or Myocarditis
Cardiac arrhythmias, endocarditis, or myocarditis was identified in 12 dogs, of which 11 were seroreactive to Bartonella vinsonii subspecies berkhoffii antigens. Historical abnormalities were highly variable but frequently included substantial weight loss, syncope, collapse, or sudden death. Fever was an infrequently detected abnormality. Cardiac disease was
American Society for Microbiology.
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12. Expression of tfx and sensitivity to the rhizobial peptide antibiotic trifolitoxin in a taxonomically distinct group of alpha-proteobacteria including the animal pathogen Brucella abortus.
Three phylogenetically distinct groups within the alpha-proteobacteria which differ in trifolitoxin sensitivity are described. Trifolitoxin sensitivity was found in strains of Agrobacterium, Brucella, Mycoplana, Ochrobactrum, Phyllobacterium, Rhodobacter, Rhodopseudomonas, Rhodospirillum, and Rhizobium. Strains of Agrobacterium, Brucella, Phyllobacterium, Rh