Pathogenic Variability
Mostrando 25-36 de 98 artigos, teses e dissertações.
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25. Occurrence and genetic characterization of Listeria spp. in minimally processed vegetables commercialized in Porto Alegre, Brazil
Minimally processed vegetables go through many steps before they are refrigerated, selection, washing, peeling, cutting, disinfection and finally packaging. However, if no care is taken at the origin of the raw materials and in the processing stages, there is a chance of finding pathogenic bacteria, such as Listeria monocytogenes, which are able to grow at l
Publicado em: 2010
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26. Molecular approaches for eco-epidemiological studies of Paracoccidioides brasiliensis
Medical mycology has greatly benefited from the introduction of molecular techniques. New knowledge on molecular genetics has provided both theoretical and practical frameworks, permitting important advances in our understanding of several aspects of pathogenic fungi. Considering Paracoccidioides brasiliensis in particular, important eco-epidemiological aspe
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-07
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27. Inteins in pathogenic fungi: a phylogenetic tool and perspectives for therapeutic applications
Inteins or "internal proteins" are coding sequences that are transcribed and translated with flanking sequences (exteins). After translation, the inteins are excised by an autocatalytic process and the host protein assumes its normal conformation and develops its expected function. These parasitic genetic elements have been found in important, conserved prot
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-05
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28. Population structure and diversity of the pathogenic fungus Aspergillus fumigatus isolated from different sources and geographic origins
Fifty-five clinical and environmental Aspergillus fumigatus isolates from Mexico, Argentina, France and Peru were analyzed to determine their genetic variability, reproductive system and level of differentiation using amplified fragment length polymorphism markers. The level of genetic variability was assessed by measuring the percentage of polymorphic loci,
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-05
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29. Streptococcus iniae E Streptococcus dysgalactiae ASSOCIADOS Ã MENINGOENCEFALITE E SEPTICEMIA EM TILÃPIAS DO NILO NO BRASIL / Streptococcus iniae AND Streptococcus dysgalactiae ASSOICIATED WITH MENINGOENCEPHALITIS AND SEPTICEMIA IN NILE TILAPIA IN BRAZIL
Pisciculture is a relatively recent branch of agorbussines in Brazil although a large increase has been observed in recent decades Tilapia is the mainly cultivate fish in Brazil in view of the fact that this specie had a great acceptance in the consumer market and large resistance to environment variations The major sources of fish production damage worldwid
Publicado em: 2009
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30. CARACTERIZAÃÃO PATOGÃNICA E MOLECULAR DE ISOLADOS DO Potato virus Y (PVY) CAUSADORES DE ANÃIS NECRÃTICOS EM TUBÃRCULOS DE BATATA / Characterization pathogenic and molecular the isolates of Potato virus Y (PVY) causes of rings necrotics in tuber potato.
Fourteen isolates of PVYNTN, collected at potato production fields in Brazil, were studied. Thirteen of them were from the South region of Minas Gerais and the other one was from SÃo Paulo State. All isolates were submitted to the test DAS-ELISA and RT-PCR for initial identification. After that, they were inoculated in fourteen host species for evaluation o
Publicado em: 2009
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31. Diversidade de isolados de Alternaria brassicicola (Schwn.) Wilt. de cultivos convencionais e orgânicos de brássicas de Pernambuco
A alternariose é considerada uma das doenças mais comuns e destrutivas das brássicas, e embora possa ser causada por várias espécies, Alternaria brassicicola é o agente patogênico predominante nos plantios convencionais e orgânicos de brássicas no Estado de Pernambuco, Brasil. Para avaliar a variabilidade patogênica de 120 isolados de A. brassicico
Publicado em: 2008
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32. Characterization and identification of Colletotrichum species associated to anthracnose in pepper (Capsicum annuum) in Brazil / Caracterização e identificação de espécies de Colletotrichum associadas à antracnose do pimentão (Capsicum annuum) no Brasil
In several countries, anthracnose is one of the most serious diseases in pepper. C. gloeosporioides has, for many years, been reported as the causal agent of anthracnose in Brazil. C. acutatum and C. capsici have only recently been reported as agents of anthracnose in some regions of the country. In this study, 56 isolates of Colletotrichum obtained from pep
Publicado em: 2008
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33. Variability among Phaeoisariopsis griseola isolates / Variabilidade entre isolados de Phaeoisariopsis griseola
Common bean (Phaseolus vulgaris L.) angular leaf spot, caused by the fungus Phaeoisariopsis griseola (Sacc.) Ferraris, is responsible for extensive yield losses of common bean in Brazil. Yield loss can reach up to 80% under disease favorable environmental conditions. Breeding for disease resistance is the most effective strategy to control the bean angular l
Publicado em: 2007
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34. Evolutionary history of Phakopsora pachyrhizi in Brazil bases in nucleotide sequences of internal transcribed spacer region of nuclear ribossomal DNA / História evolutiva de Phakopsora pachyrhizi no Brasil com base em seqüências de nucleotídeos da região espaçadora interna do DNA ribossomal nuclear
The soybean is attacked by many pathogens, spite of all the diseases the Asiatic rust caused by the fungus Phakopsora pachyrhizi has been considered one of the most important pathogens. The symptoms are characterized for small points darker than the healthy tissue, where it is observed a bulge, which it opens in small pore expelling some uredionospores. Hard
Publicado em: 2007
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35. Mapping and regulatory mechanisms study of genes associated with caraniofacial malformations / "Estudo de mecanismos regulatórios e mapeamento de genes associados a malformações craniofaciais"
In the present study, we investigate two craniofacial mendelian disorders, resulting from abnormalities in the development of the first and second pharyngeal arches: the Treacher Collins Syndrome (TCS ) and the auriculo condylar syndrome (ACS). The identification of genes and molecular mechanisms associated to these conditions, in addition to contributing to
Publicado em: 2007
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36. Caracterização molecular dos HPVs de alto risco dos genótipos -53, -56 e -66 infectando mulheres no Distrito Federal e entorno
Cervical cancer is the second major cause of death in the female population and is associated with human papillomavirus (HPV) infection. Different HPV genotypes have different oncogenic potential, and different variants intragenotype can also present different oncogenic potential. Several works have been done with the aim of describing HPV-16 and -18 variant
Publicado em: 2007