Bacterial Phytopathogenic
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Improved antifungal activity of barley derived chitinase I gene that overexpress a 32 kDa recombinant chitinase in Escherichia coli host
Abstract Agricultural crops suffer many diseases, including fungal and bacterial infections, causing significant yield losses. The identification and characterisation of pathogenesis-related protein genes, such as chitinases, can lead to reduction in pathogen growth, thereby increasing tolerance against fungal pathogens. In the present study, the chitinase I
Braz. J. Microbiol.. Publicado em: 2018-06
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2. Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord
Abstract The diversity and abundance of retrievable pelagic heterotrophic bacteria in Kongsfjorden, an Arctic fjord, was studied during the summer of 2011 (June, August, and September). Retrievable bacterial load ranged from 103 to 107 CFU L−1 in June, while it was 104-106 CFU L−1 in August and September. Based on 16S rRNA gene sequence similarities, a h
Braz. J. Microbiol.. Publicado em: 2017-03
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3. 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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4. 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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5. Ação antibiótica de metabólito de Pseudomonas sp. no controle da Xanthomonas arboricola pv. pruni
Bacterial spot is caused by Xanthomonas arboricola pv. pruni (Xap), which is considered a major problem in peach orchards. Products based on copper and antibiotics are used to control and the biocontrol is a new alternative. The objective was evaluate the antibiotic activity of the metabolite produced by Pseudomonas sp. cultivated, for 15 days (28 °C, 100 r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/01/2010
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6. Diversidade da comunidade bacteriana endofítica de sementes de soja e o seu potencial biotecnológico / Endophytic bacterial community diversity of soybean seeds and its biotechnological potential
Plant tissues, including seeds, are inhabited by microorganisms called endophytes, whose interaction with the plant can offer advantages to the host. It is known that plants growth promotion is induced by indole acetic acid (IAA) synthesis, phosphate solubilization and nitrogen fixation, among others. The control of phytopathogenic fungi is also related to a
Publicado em: 2009
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7. 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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8. Indução de resistência em plantas de berinjela e tomate por Lentinula edodes e Agaricus blazei contra bactérias causadoras de murcha (Ralstonia solanacearum) e cancro (Clavibacter michiganensis subsp. michiganensis) / Induced resistance by Lentinula edodes and Agaricus blazei in tomato plant and eggplant against bacterial wilt (Ralstonia solanacearum) solanacearum) and bacterial canker (Clavibacter michiganensis subsp. michiganensis)
Devido ao aumento da preocupação com o impacto dos agrotóxicos no meio ambiente e na saúde humana, busca-se uma agricultura sustentável. É no âmbito dessa questão que a resistência induzida torna-se uma ferramenta fundamental no manejo integrado de doenças e indispensável para uma nova agricultura, mais racional e sustentável. Dentre os diversos
Publicado em: 2007
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9. Desenvolvimento de meio de cultura semi-seletivo para detecção de Xanthomonas axonopodis pv. malvacearum em sementes de algodão (Gossypium hirsutum L.) / Development of a semi-selective medium to detection Xanthomonas axonopodis pv. malvacerum from cotton seeds (Gossypium hirsutum L.)
Um dos principais fatores limitantes da produção de algodão é a ocorrência de doenças e, entre os patógenos mais importantes estão às bactérias, que causam danos significativos à cultura. A doença conhecida como mancha angular, causada pela bactéria Xanthomonas axonopodis pv. malvacearum (Xam), é uma doença grave, que tem gerado grande preocup
Publicado em: 2006
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10. Controle de Guignardia citricarpa, agente causal da Mancha Preta dos Citros / Control of Guignardia citricarpa, causal agent of Citrus Black Spot
Citriculture is an extreme important rural activity in social and economical national context in Brazil. Orange is 49% of total brazilian fruit production. However, thousands of tons are lost due to the action of phytopathogens annually. The Black Spot of Citrus (BSC) is responsible for great lost in various citrus producers regions all around the world, bei
Publicado em: 2006
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11. 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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12. Fisiologia de Bacillus subtilis R14 sob condiÃÃes restrita e irrestrita de oxigÃnio: produÃÃo de compostos bioativos e esporulaÃÃo
Several strains of Bacillus subtilis produce lipopeptides, which are amphiphilic compounds with surfactant and antimicrobial activities. Production of lipopeptide, sporulation and competence in B. subtilis are interconnected through a complex array of controlling elements. The aims of this study were to evaluate the activity of B. subtilis R14 against severa
Publicado em: 2005