Pathogenicity
Mostrando 25-36 de 2411 artigos, teses e dissertações.
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25. Morte de árvores de plátano causada por Phytophthora cinnamomi
RESUMO Em 2016, em isolamentos provenientes de amostras de árvores de plátano (Platanus acerifolia) na região de Curitiba, estado do Paraná (Brasil), foram obtidos quatro isolados do oomiceto Phytophthora. Os isolados obtidos foram caracterizados a partir de análises morfológica e molecular visando sua identificação específica. Avaliou-se o crescime
Summa phytopathol.. Publicado em: 10/07/2019
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26. Biological Control of Ceratocystis fimbriata by Bacillus subtilis on Acacia mearnsii Seedlings
RESUMO O objetivo deste trabalho foi avaliar o comportamento de isolados de Ceratocystis fimbriata obtidos de kiwi (Actinidia deliciosa) em mudas de acácia-negra (Acacia mearnsii De Wild.), o potencial de biocontrole in vitro de Bacillus subtilis sobre C. fimbriata e o comportamento in vivo de B. subtilis contra C. fimbriata em mudas de acácia-negra. Isola
Floresta Ambient.. Publicado em: 04/07/2019
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27. Interactions of adjuvants on adhesion and germination of Isaria fumosorosea on adults of Diaphorina citri
ABSTRACT: Asian citrus psyllid, Diaphorina citri, is considered the most important citrus pest worldwide, as it transmits Huanglongbing – serious citrus disease. New efficient and sustainable strategies to control this pest have been investigated and the use of entomopathogenic fungi has become a promising alternative. The objective of this study was to ev
Sci. agric. (Piracicaba, Braz.). Publicado em: 30/05/2019
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28. Highly Pathogenic and Multidrug Resistant Avian Pathogenic Escherichia Coli in Free-Range Chickens from Brazil
ABSTRACT Avian pathogenic Escherichiacoli (APEC) virulence mechanism has been continuously studied and it is believed to be multifactorial and because of this, this work aimed to characterize potentially APEC strains isolated from free-range hens. Isolates were submitted to PCR for the detection of virulence genes, which were of high prevalence. In vivo inoc
Braz. J. Poult. Sci.. Publicado em: 09/05/2019
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29. Molecular characterization of virulence genes cctA, nanA, and fliC in Clostridium chauvoei from Rio Grande do Sul and São Paulo State, Brazil
RESUMO: Toxina A de Clostridium chauvoei (CctA), neuraminidase (NanA) e flagelina (FliC) são proteínas que contribuem para a patogenicidade de Clostridium chauvoei, o agente causador do carbúnculo sintomático em bovinos. O objetivo deste estudo foi analisar a variabilidade genética dos genes cctA, nanA, e fliC em C. chauvoei isolados em diferentes per�
Cienc. Rural. Publicado em: 02/05/2019
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30. Susceptibility of Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae), a Eucalyptus pest, to entomopathogenic fungi
ABSTRACT: Thaumastocoris peregrinus Carpintero and Dellape (Hemiptera: Thaumastocoridae) is a sap-sucking insect that has become a major pest of eucalypts. The entomopathogenic fungi Beauveria bassiana (Bals.-Criv.) Vuill. and Metarhizium anisopliae (Metsch.) Sorokin have the potential to control insect pests. This study evaluated the susceptibility of T. pe
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-05
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31. Antimicrobial Resistance and Molecular Characterization of Salmonella Enterica Serotypes Isolated from Poultry Sources in Brazil
ABSTRACT Salmonella spp. remain among the most important agents of foodborne diseases worldwide. The importance of Salmonella spp. in public health is linked to their wide range of antimicrobial resistance and to their pathogenicity and virulence in both human and animal hosts. The aim of this study was to determine the antimicrobial resistance patterns for
Braz. J. Poult. Sci.. Publicado em: 18/04/2019
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32. Frequency of Porphyromonas gingivalis fimA in smokers and nonsmokers after periodontal therapy
Abstract Porphyromonas gingivalis is one of the most important Gram-negative anaerobe bacteria involved in the pathogenesis of periodontitis. P. gingivalis has an arsenal of specialized virulence factors that contribute to its pathogenicity. Among them, fimbriae play a role in the initial attachment and organization of biofilms. Different genotypes of fimA h
J. Appl. Oral Sci.. Publicado em: 11/04/2019
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33. Indução de resistência por acibenzolar-S-metil em feijão caupi no controle da antracnose
RESUMO O feijão caupi, [Vigna unguiculata (L.) Walp.] tem uma grande importância em virtude do elevado teor proteico e energético na alimentação humana. Dentre as principais doenças da cultura do feijão, destaca-se a antracnose, causada pelo desenvolvimento do fungo hpsColletotrichum lindemuthianumhps. A indução de resistência torna-se uma alternat
Summa phytopathol.. Publicado em: 2019-03
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34. Biopersistence of fibrous thermal insulations (AES fibers) after heat exposure using intratracheal instillation technique
Resumo Pelo fato das fibras cerâmicas refratárias (FCR) serem classificadas como agentes possivelmente patogênicos à espécie humana, as fibras de silicato de metais alcalino-terrosos (AES) podem ser utilizadas como potenciais substitutos. Os experimentos in vivo que avaliaram a patogenicidade das fibras AES utilizaram esse produto in natura. A classific
Cerâmica. Publicado em: 2019-01
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35. Differential role of gpaB and sidA gene expressions in relation to virulence in Aspergillus species from patients with invasive aspergillosis
Abstract The virulence genes in invasive aspergillosis (IA) have not been analyzed adequately. The present study was designed to evaluate the expression of gpaB and sidA genes, which are important virulence genes in Aspergillus spp. from bronchoalveolar lavage (BAL) samples. Direct examination and culture on Czapek Agar and Sabouraud Dextrose Agar media were
Braz. J. Microbiol.. Publicado em: 2018-09
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36. Trichoderma harzianum MTCC 5179 impacts the population and functional dynamics of microbial community in the rhizosphere of black pepper (Piper nigrum L.)
Abstract Employing Illumina Hiseq whole genome metagenome sequencing approach, we studied the impact of Trichoderma harzianum on altering the microbial community and its functional dynamics in the rhizhosphere soil of black pepper (Piper nigrum L.). The metagenomic datasets from the rhizosphere with (treatment) and without (control) T. harzianum inoculation
Braz. J. Microbiol.. Publicado em: 2018-09