Erwinia Carotovora Subsp Carotovora
Mostrando 1-12 de 68 artigos, teses e dissertações.
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1. Erwinia chrysanthemi: pectolytic bacterium causing soft rot outbreaks of arracacha in Brazil.
The objetive of this work was to identify the pectolytic bacteria associated with soft rot of arracacha roots in Brazil. From 1998 to 2001, 227 isolates of Erwinia spp. were obtained from arracacha roots and identified by biochemical and physiological tests (pectolytic activity, lecithinase, ?-methyl glucoside, phosphatase, erythromycin sensivity, growth at
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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2. Detecção e isolamento de peptídeos antimicrobianos de folhas de Capsicum annum L. (pimentão Magali R) / Detection and isolation of antimicrobial peptides from leaves of Capsicum annum L. (bell pepper Magali R)
Peptídeos antimicrobianos (AMPs) têm atraído a atenção de pesquisadores como pontenciais compostos de defesa para serem usados no agronegócio. Eles apresentam mecanismos de ação diferentes dos compostos disponíveis comercialmente. O objetivo deste trabalho foi, por técnicas proteômicas, bioprospectar o potencial antimicrobiano de frações enrique
Publicado em: 2009
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3. Podridão-mole em plantas de cebolinha causada por Pectobacterium carotovorumsubsp. carotovorum em Roraima
A ocorrência de Pectobacterium carotovorum subsp. carotovorum (=Erwinia carotovora subsp. carotovora) em cebolinha (Allium fistulosum) é relatada pela primeira vez na região norte do Brasil. Até então sua ocorrência estava registrada apenas no Distrito Federal.
Acta Amazonica. Publicado em: 2008
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4. Resistance of potato clones to soft rot (Erwinia carotovora subsp. catorovora) / ResistÃncia de clones de batata à podridÃo-mole (Erwinia carotovora subsp. carotovora)
In order to find clones with high resistance levels to Erwinia carotovora subsp. catorovora and good agronomic traits, 234 clones from the Potato Breeding Program at the Universidade Federal de Lavras (UFLA) were evaluated. It was also evaluated the correlation between tuber dry matter content and resistance level to Ecc and identify traits for the easy eval
Publicado em: 2007
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5. Erwinia chrysanthemi: bactéria pectolítica envolvida na "mela" da mandioquinha-salsa no Brasil
O objetivo deste trabalho foi identificar as bactérias pectolíticas envolvidas na podridão-mole de raízes de mandioquinha-salsa no Brasil. De 1998 a 2001, 227 isolados de Erwinia spp. foram obtidos de raízes de mandioquinha-salsa e identificados por testes bioquímicos e fisiológicos (atividade pectolítica, lecitinase, a-methyl glucosídeo, fosfatase,
Pesquisa Agropecuária Brasileira. Publicado em: 2006-10
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6. Incidência de erwinias pectolíticas associadas com a canela preta em batata no Rio Grande do Sul
Erwinia carotovora subsp. atroseptica (Eca), E. carotovora subsp. carotovora (Ecc) e E. chrysanthemi (Ech) podem causar canela preta em batata (Solanum tuberosum). Com o objetivo de verificar a ocorrência destes patógenos em lavouras do Rio Grande do Sul, plantas com sintomas de canela preta foram coletadas em 22 lavouras em nove municípios de quatro regi
Fitopatologia Brasileira. Publicado em: 2003-01
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7. PCR and restriction fragment length polymorphism of a pel gene as a tool to identify Erwinia carotovora in relation to potato diseases.
Using a sequenced pectate lyase-encoding gene (pel gene), we developed a PCR test for Erwinia carotovora. A set of primers allowed the amplification of a 434-bp fragment in E. carotovora strains. Among the 89 E. carotovora strains tested, only the Erwinia carotovora subsp. betavasculorum strains were not detected. A restriction fragment length polymorphism (
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8. Application of Amplified Fragment Length Polymorphism Fingerprinting for Taxonomy and Identification of the Soft Rot Bacteria Erwinia carotovora and Erwinia chrysanthemi
The soft rot bacteria Erwinia carotovora and Erwinia chrysanthemi are important pathogens of potato and other crops. However, the taxonomy of these pathogens, particularly at subspecies level, is unclear. An investigation using amplified fragment length polymorphism (AFLP) fingerprinting was undertaken to determine the taxonomic relationships within this gro
American Society for Microbiology.
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9. Rapid Identification and Differentiation of the Soft Rot Erwinias by 16S-23S Intergenic Transcribed Spacer-PCR and Restriction Fragment Length Polymorphism Analyses
Current identification methods for the soft rot erwinias are both imprecise and time-consuming. We have used the 16S-23S rRNA intergenic transcribed spacer (ITS) to aid in their identification. Analysis by ITS-PCR and ITS-restriction fragment length polymorphism was found to be a simple, precise, and rapid method compared to current molecular and phenotypic
American Society for Microbiology.
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10. Characterization of transposon insertion out- mutants of Erwinia carotovora subsp. carotovora defective in enzyme export and of a DNA segment that complements out mutations in E. carotovora subsp. carotovora, E. carotovora subsp. atroseptica, and Erwinia chrysanthemi.
Soft-rotting Erwinia spp. export degradative enzymes to the cell exterior (Out+), a process contributing to their ability to macerate plant tissues. Transposon (Tn5, Tn10, Tn10-lacZ) insertion Out- mutants were obtained in Erwinia carotovora subsp. carotovora 71 by using plasmid and bacteriophage lambda delivery systems. In these mutants, pectate lyases, pol
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11. Role of Antibiosis in Competition of Erwinia Strains in Potato Infection Courts
Erwinia carotovora subsp. betavasculorum strains produced a bactericidal antibiotic in vitro that inhibited a wide spectrum of gram-negative and gram-positive bacteria. The optimum temperature for production was 24°C, and the addition of glycerol to culture media enhanced antibiotic production. Antibiotic production by these strains in the infection court o
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12. pULB113, an RP4::mini-Mu plasmid, mediates chromosomal mobilization and R-prime formation in Erwinia amylovora, Erwinia chrysanthemi, and subspecies of Erwinia carotovora.
The RP4::mini-Mu plasmid pULB113, transferred from Escherichia coli strain MXR, was stable and transfer proficient in Erwinia amylovora strain EA303, E. carotovora subsp. atroseptica strain ECA12, E. carotovora subsp. carotovora strain ECC193, and E. chrysanthemi strain EC183. The plasmid mobilized an array of Erwinia sp. chromosomal markers (E. amylovora: h