Phytopathogenic Bacterium
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Isolation of
Dickeya dadantii strains from potato disease and biocontrol by their bacteriophagesOne of the most economically important bacterial pathogens of plants and plant products is
Dickeya dadantii . This bacterium causes soft rot disease in tubers and other parts of the potato and other plants of theSolanaceae family. The application of restricted host range bacteriophages as biocontrol agents has recently gaBraz. J. Microbiol.. Publicado em: 21/07/2015
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2. Ocorrência de HLB e caracterização de Candidatus Liberibacter spp. no estado do Paraná
Huanglongbing (HLB) is considered the most important disease for citrus production around the world. Three bacteria species are associated with HLB, Ca. Liberibacter africanus, Ca. Liberibacter asiaticus and Ca. Liberibacter americanus. In Brazil, the disease was first reported in 2004, in the State of São Paulo. In Parana, HLB was reported for
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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3. Caracterização funcional e estrutural de peroxidases dependentes de tiól da bactéria fitopatogênica Xylella fastidiosa / Functional and structural characterization of thiol-dependent peroxidases from the phytopathogenic bacterium Xylella fastidiosa
A bactéria fitopatogênica Xylella fastidiosa é o agente etiológico da Clorose Variegada dos Citros (CVC), que causa perdas anuais estimadas em US$ 100 milhões no Brasil. Durante o processo infeccioso, a geração extracelular de espécies ativas de oxigênio é um dos principais mecanismos de defesa da planta contra o patógeno. Em contrapartida, para s
Publicado em: 2009
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4. Xanthomonas spp. causadoras de mancha bacteriana do tomateiro (Lycopersicon esculentum Mill.): detecção em sementes e diferenciação / Xanthomonas spp. causing the tomato (Lycopersicon esculentum Mill.) bacterial spot: detection in seeds and differentiation
The tomato is the second economical important horticultural crop in the world, being one of the most exigent cultures in phytosanitary cares, due to the large number of diseases that attack the culture and for the high destructive capacity and difficult control of the pathogens. The bacterial-spot, caused by species of the genus Xanthomonas (X. euvesicatoria
Publicado em: 2007
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5. Análise global da expressão gênica de Xylella fastidiosa submetida a estresses ambientais / Global gene expression analysis of Xylella fastidiosa under environmental stress conditions
Xylella fastidiosa is a phytopathogenic bacterium responsible for diseases in many economically important crops. Although different strains have been studied, little is known about X. fastidiosa stress responses. To investigate X. fastidiosa genes involved in heat, salt and osmotic shock responses, we performed a whole genome microarray analysis in time-cour
Publicado em: 2006
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6. Identification of differentially expressed genes of Xanthomonas axonopodis pv. citri by representational difference analysis of cDNA
Xanthomonas axonopodis pv. citri is a phytopathogenic bacterium responsible for citrus canker, a serious disease which causes severe losses in citriculture around the world. In this study we report the differential expression of X. axonopodis pv. citri in response to specific treatments by using Representational Difference Analysis of cDNA (cDNA RDA). cDNAs
Genetics and Molecular Biology. Publicado em: 2005-03
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7. Antifungal activity of secondary metabolites produced by Bacillus pumilus MAIIIM4a, an endophytic from cassava. / Atividade antifúngica de metabólitos secundários produzidos pelo endófito de mandioca Bacillus pumilus MAIIIM4a.
Endophytic microorganisms are defined as organisms that inhabit the interior of a vegetable at least during a period of the vital cycle, without causing any apparent damage. In the search for new organisms and new secondary metabolites, a study was conducted to evaluate the chemical diversity of endophytic bacteria through the isolation and identification of
Publicado em: 2005
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8. Characterization of extracellular proteases produced by Xylella fastidiosa from citrus and grapevines. / Caracterização de proteases extracelulares produzidas por Xylella fastidiosa de citros e videira.
Xylella fastidiosa is a pathogenic bacterium found in several plants. These bacteria secrete extracellular proteases into the culture broth as visualized in sodium-dodecyl-sulfate polyacrylamide activity gels containing gelatin as a co-polymerized substrate. Three major protein bands were produced by strain X0 (citrus) with molar masses (MM) of 122, 84 and 6
Publicado em: 2005
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9. Survey of leafhopper (hemiptera: cicadellidae) vectors of Xylella fastidiosa in citrus groves of the north coast of Bahia state. / Levantamento de cigarrinhas (Hemiptera: Cicadellidae) vetoras de Xylella fastidiosa em pomares cítricos do litoral norte da Bahia.
This study was carried out to identify vectors or potential vectors of Xylella fastidiosa Wells et al. in citrus groves of the north coast of Bahia State, Brazil, based on a faunistic survey and determination of predominant sharpshooter leafhoppers (subfamily Cicadellinae). The survey was carried out from March/2002 to February/2003 in five old sweet orange
Publicado em: 2004
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10. Expressão diferencial de Xanthomonas axonopodis pv. citri na interação com Citrus sinensis utilizando eletroforese bidimensional de proteinas e cDNA RDA ("Representational Difference Analysis")
The present study reports the differential expression of X. axonopodis pv. citri in response to different growth conditions by two-dimensional gel electrophoresis (2-DE) of proteins and cDNA RDA (Representational Difference Analysis). For the protein analysis, the bacterium was cultured in the basal medium MM1 and in the presence of leaf extracts from a susc
Publicado em: 2002
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11. Production of beta-carotene in Zymomonas mobilis and Agrobacterium tumefaciens by introduction of the biosynthesis genes from Erwinia uredovora.
The Erwinia uredovora crtB, crtE, crtI, and crtY genes required for beta-carotene biosynthesis were introduced by conjugal transfer into an ethanol-producing bacterium, Zymomonas mobilis, and a phytopathogenic bacterium, Agrobacterium tumefaciens, in which no carotenoid is synthesized. The transconjugants of Z. mobilis and A. tumefaciens carrying these genes
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12. Identification of a Novel β-Lactamase Produced by Xanthomonas campestris, a Phytopathogenic Bacterium
The Xanthomonas campestris pv. campestris 11 chromosome encodes a periplasmic β-lactamase of 30 kDa. Gene replacement and complementation confirmed the presence of this enzyme. Its deduced amino acid sequence shows identity and conserved domains between it and Stenotrophomonas maltophilia L2 and other Ambler class A/Bush group 2 β-lactamases. Southern hybr
American Society for Microbiology.