Bacterial Blight Plant Disease
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Green propolis ethanolic extract in bean plant protection against bacterial diseases
RESUMO: Este trabalho teve como objetivo avaliar o extrato etanólico de própolis verde (EEP) na proteção de plantas de feijoeiro contra as duas principais bacterioses da cultura, crestamento bacteriano (Xanthomonas axonopodis pv. phaseoli) e fogo selvagem (Pseudomonas syringae pv. tabaci). Foram realizados experimentos sobre atividade antimicrobiana ind
Cienc. Rural. Publicado em: 16/05/2019
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2. Activity of extracellular compounds of Pseudomonas sp. against Xanthomonas axonopodis in vitro and bacterial leaf blight in eucalyptus
Bacterial leaf blight caused by Xanthomonas axonopodis is a major problem in the production of eucalyptus seedlings. The pathogen causes leaf lesions that reduce the photosynthetic area and limit plant growth. The objective of this study was to evaluate the antibiotic activity of secondary metabolic compounds of a Pseudomonas sp. against X. axonopodis, follo
Tropical Plant Pathology. Publicado em: 2012-08
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3. Indução de resistência em feijoeiro (Phaseolus vulgaris) por acibenzolar-S-metil contra Xanthomonas axonopodis pv. phaseoli: parâmetros bioquímicos e da produção / Induced resistance in bean plants (Phaseolus vulgaris) by acibenzolar-S-methyl against Xanthomonas axonopodis pv. phaseoli: biochemical and production parameters
The common bacterial blight disease of bean caused by the bacterium Xanthomonnas axonopodis pv. phaseoli, occurs mainly in hot and humid regions of the globe. The induced resistance consists in the increase of the plant resistance by the use of external agents, without any change in its genome. The objectives of this study were: (i) to verify the induction o
Publicado em: 2010
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4. Mapeamento de QRL para Xanthomonas axonopodis pv. passiflorae em maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.). / QRL mapping for Xanthomonas axonopodis pv. passiflorae in the yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.)
Dando continuidade aos trabalhos realizados no Departamento de Genética da ESALQ/USP, referentes aos estudos de mapeamento de genes de resistência à bacteriose em maracujá-amarelo, foram realizados dois novos experimentos de inoculação envolvendo uma população obtida a partir do cruzamento entre IAPAR-06 e IAPAR- 123, ambos acessos pertencent
Publicado em: 2005
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5. Efeito do extrato aquoso de cÃrcuma (Curcuma longa L.) em Xanthomonas axonopodis pv. manihotis / Efect of aqueous extract from turmeric (Curcuma longa L.) in Xanthomonas axonopodis pv. manihotis.
The cassava bacterial blight caused by Xanthomonas axonopodis pv. manihotis is the most importance disease of the culture and it is distributed in all the places where it is cultivated. Infected stems constitute themselves in the principal way of the bacterium dissemination to new cultivation areas. The chemical control of phytobacteria is difficult due to t
Publicado em: 2003
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6. Expression of Xa1, a bacterial blight-resistance gene in rice, is induced by bacterial inoculation
The Xa1 gene in rice confers resistance to Japanese race 1 of Xanthomonas oryzae pv. oryzae, the causal pathogen of bacterial blight (BB). We isolated the Xa1 gene by a map-based cloning strategy. The deduced amino acid sequence of the Xa1 gene product contains nucleotide binding sites (NBS) and a new type of leucine-rich repeats (LRR); thus, Xa1 is a member
The National Academy of Sciences.
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7. Effect of Increased β-Glucosidase Activity on Virulence of Erwinia amylovora
Plant tissues often contain β-glucosides that can be enzymatically hydrolyzed to produce toxic aglycones. It has been suggested that the low β-glucosidase activity found in Erwinia amylovora contributes to bacterial virulence by allowing the bacteria to infect plants that contain β-glucosides without inducing the formation of toxic aglycones. To test this
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8. Predicting durability of a disease resistance gene based on an assessment of the fitness loss and epidemiological consequences of avirulence gene mutation
Durability of plant disease resistance (R) genes may be predicted if the cost of pathogen adaptation to overcome resistance is understood. Adaptation of the bacterial blight pathogen, Xanthomonas oryzae pv. oryzae (Xoo), to virulence in rice is the result of the loss of pathogen avirulence gene function, but little is known about its effect on aggressi
The National Academy of Sciences.
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9. Disease resistance conferred by expression of a gene encoding H2O2-generating glucose oxidase in transgenic potato plants.
Plant defense responses to pathogen infection involve the production of active oxygen species, including hydrogen peroxide (H2O2). We obtained transgenic potato plants expressing a fungal gene encoding glucose oxidase, which generates H2O2 when glucose is oxidized. H2O2 levels were elevated in both leaf and tuber tissues of these plants. Transgenic potato tu
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10. A Cell Wall–Degrading Esterase of Xanthomonas oryzae Requires a Unique Substrate Recognition Module for Pathogenesis on Rice[W]
Xanthomonas oryzae pv oryzae (Xoo) causes bacterial blight, a serious disease of rice (Oryza sativa). LipA is a secretory virulence factor of Xoo, implicated in degradation of rice cell walls and the concomitant elicitation of innate immune responses, such as callose deposition and programmed cell death. Here, we present the high-resolution structural charac
American Society of Plant Biologists.
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11. Evidence for the Involvement of an Oxidative Stress in the Initiation of Infection of Pear by Erwinia amylovora1
Involvement of an oxidative burst, usually related to incompatible plant/pathogen interactions leading to hypersensitive reactions, was investigated with Erwinia amylovora, the causal agent of fire blight of Maloideae subfamily of Rosaceae, in interaction with pear (Pyrus communis; compatible situation) and tobacco (Nicotiana tabacum; incompatible situa
American Society of Plant Physiologists.
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12. Characterization of the hrpC and hrpRS Operons of Pseudomonas syringae Pathovars Syringae, Tomato, and Glycinea and Analysis of the Ability of hrpF, hrpG, hrcC, hrpT, and hrpV Mutants To Elicit the Hypersensitive Response and Disease in Plants
The species Pseudomonas syringae encompasses plant pathogens with differing host specificities and corresponding pathovar designations. P. syringae requires the Hrp (type III protein secretion) system, encoded by a 25-kb cluster of hrp and hrc genes, in order to elicit the hypersensitive response (HR) in nonhosts or to be pathogenic in hosts. DNA sequence an
American Society for Microbiology.