A Brassicicola
Mostrando 13-24 de 35 artigos, teses e dissertações.
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13. Variabilidade de isolados de Alternaria brassicicola no Estado de Pernambuco
A variabilidade de 38 isolados de Alternaria brassicicola foi estimada com base em variáveis relacionadas ao desenvolvimento da alternariose e à fisiologia do patógeno. Os isolados foram coletados de cultivos comerciais de crucíferas do Estado de Pernambuco. Cada isolado foi inoculado em plantas de repolho (Brassica oleracea var. capitata), cv. Midori, c
Fitopatologia Brasileira. Publicado em: 2003-12
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14. Epidemiologia da Alternariose e resistência de cultivares em brássicas sob diferentes sistemas de cultivo
Cabbage (Brassica oleracea var. capitata ), cauliflower (Brassica oleracea var. botrytis), Chinese cabbage (Brassica pekinnensis) and broccoli (Brassica oleracea var. italica) have high economic expression in the Agreste region in the State of Pernambuco, Brazil. However, the occurrence of foliar diseases such as Alternaria black spot, caused by Alternaria b
Publicado em: 2003
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15. Epidemiologia comparativa da podridão negra e da alternariose do repolho no Agreste de Pernambuco
A podridão negra causada por Xanthomonas campestris pv. campestris, e a alternariose causada por Alternaria brassicicola constituem importantes doenças do repolho no estado de Pernambuco. Em virtude do desconhecimento sobre a epidemiologia dessas doenças a nível regional, foi efetuada a análise comparativa das epidemias com ênfase nos aspectos temporai
Fitopatologia Brasileira. Publicado em: 2002-02
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16. Secretome Analysis Reveals an Arabidopsis Lipase Involved in Defense against Alternaria brassicicolaW⃞
The Arabidopsis thaliana secretome was analyzed by the proteomic approach, which led to the identification of secreted proteins implicated in many aspects of cell biology. We then investigated the change in the Arabidopsis secretome in response to salicylic acid and identified several proteins involved in pathogen response. One of these, a secreted lipase wi
American Society of Plant Biologists.
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17. Characterization of the Early Response of Arabidopsis to Alternaria brassicicola Infection Using Expression Profiling[w]
All tested accessions of Arabidopsis are resistant to the fungal pathogen Alternaria brassicicola. Resistance is compromised by pad3 or coi1 mutations, suggesting that it requires the Arabidopsis phytoalexin camalexin and jasmonic acid (JA)-dependent signaling, respectively. This contrasts with most well-studied Arabidopsis pathogens, which are controll
The American Society for Plant Biologists.
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18. Cloning of a Gene Encoding an Alt a 1 Isoallergen Differentially Expressed by the Necrotrophic Fungus Alternaria brassicicola during Arabidopsis Infection
Alternaria species are considered some of the most important fungi responsible for allergenic morbidity in humans. The Alternaria protein that elicits the most intense allergic reaction in humans is Alt a 1, yet no biological function has been identified for this protein. In this study, suppression subtractive hybridization and virtual Northern blots were us
American Society for Microbiology.
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19. A New Method To Monitor Airborne Inoculum of the Fungal Plant Pathogens Mycosphaerella brassicicola and Botrytis cinerea
We describe a new microtiter immunospore trapping device (MTIST device) that uses a suction system to directly trap air particulates by impaction in microtiter wells. This device can be used for rapid detection and immunoquantification of ascospores of Mycosphaerella brassicicola and conidia of Botrytis cinerea by an enzyme-linked immunosorbent assay (ELISA)
American Society for Microbiology.
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20. Separate jasmonate-dependent and salicylate-dependent defense-response pathways in Arabidopsis are essential for resistance to distinct microbial pathogens
The endogenous plant hormones salicylic acid (SA) and jasmonic acid (JA), whose levels increase on pathogen infection, activate separate sets of genes encoding antimicrobial proteins in Arabidopsis thaliana. The pathogen-inducible genes PR-1, PR-2, and PR-5 require SA signaling for activation, whereas the plant defensin gene PDF1.2, along with a PR-3 and PR-
The National Academy of Sciences.
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21. Dual Roles of Reactive Oxygen Species and NADPH Oxidase RBOHD in an Arabidopsis-Alternaria Pathosystem1[W]
Arabidopsis (Arabidopsis thaliana) NADPH oxidases have been reported to suppress the spread of pathogen- and salicylic acid-induced cell death. Here, we present dual roles of RBOHD (for respiratory burst oxidase homolog D) in an Arabidopsis-Alternaria pathosystem, suggesting either initiation or prevention of cell death dependent on the distance from pathoge
American Society of Plant Biologists.
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22. Requirement of Functional Ethylene-Insensitive 2 Gene for Efficient Resistance of Arabidopsis to Infection by Botrytis cinerea1
Inoculation of wild-type Arabidopsis plants with the fungus Alternaria brassicicola results in systemic induction of genes encoding a plant defensin (PDF1.2), a basic chitinase (PR-3), and an acidic hevein-like protein (PR-4). Pathogen-induced induction of these three genes is almost completely abolished in the ethylene-insensitive Arabidopsis mutant ein2-1.
American Society of Plant Physiologists.
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23. Chlorophyllase 1, a Damage Control Enzyme, Affects the Balance between Defense Pathways in Plants
Accumulation of reactive oxygen species (ROS) is central to plant response to several pathogens. One of the sources of ROS is the chloroplast because of the photoactive nature of the chlorophylls. Chlorophyllase 1 (encoded by AtCLH1) of Arabidopsis thaliana is quickly induced after tissue damage (e.g., caused by the bacterial necrotroph Erwinia carotovora or
American Society of Plant Biologists.
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24. Pathogen-induced systemic activation of a plant defensin gene in Arabidopsis follows a salicylic acid-independent pathway.
A 5-kD plant defensin was purified from Arabidopsis leaves challenged with the fungus Alternaria brassicicola and shown to possess antifungal properties in vitro. The corresponding plant defensin gene was induced after treatment of leaves with methyl jasmonate or ethylene but not with salicylic acid or 2,6-dichloroisonicotinic acid. When challenged with A. b