Induced Plant Defense
Mostrando 13-24 de 272 artigos, teses e dissertações.
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13. Characterization of the dry bean polygalacturonase-inhibiting protein (PGIP) gene family during Sclerotinia sclerotiorum (Sclerotiniaceae) infection.
Polygalacturonase-inhibiting proteins are leucine-rich repeat proteins that inhibit fungal endopolygalacturonases. The interaction of polygalacturonase-inhibiting protein with endopolygalacturonases limits the destructive potential of endopolygalacturonases and may trigger plant defense responses induced by oligogalacturonides. We examined the expression of
Genetics and Molecular Research. Publicado em: 2011
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14. Differential gene expression, induced by salicylic acid and Fusarium oxysporum f. sp. lycopersici infection, in tomato.
The objective of this work was to determine the transcript profile of tomato plants (Lycopersicon esculentum Mill.), during Fusarium oxysporum f. sp. lycopersici infection and after foliar application of salicylic acid. The suppression subtractive hybridization (SSH) technique was used to generate a cDNA library enriched for transcripts differentially expr
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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15. Arsênio em plantas aquáticas: absorção, toxicidade, nutrição e metabolismo da glutationa / Arsenic in aquatic plants: absorption, toxicity, nutrition and glutathione metabolism
Arsenic (As) toxicity and its effects on glutathione metabolism were analyzed in two vegetal specimens: Lemna gibba and Salvinia minima. Plants were cultivated in nutrient solution, pH 6.5, and exposed to arsenic concentrations of 0.0 and 1.0 mg L-1, for three days. Both species accumulated As in their tissues when exposed to this element, being this accumul
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/10/2010
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16. Effect of Methyl Jasmonate on antioxidative enzyme activities and on the contents of ROS and H2O2 in Ricinus communis leaves
Jasmonates are a class of plant hormones that mediate various aspects in gene and metabolic regulation, defense, stress responses, reproduction and, possibly, communication. Oxidative stress stimulates synthesis of antioxidant metabolites and enhances antioxidant enzyme activities that could protect plant tissues. The aim of this study was to verify the effe
Brazilian Journal of Plant Physiology. Publicado em: 2010
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17. Endossimbiose de Tetranychus evansi Baker e Pritchard (Acari: Tetranychidae) e a resposta de defesa induzida em tomateiro / Endosymbioses of Tetranychus evansi Baker and Pritchard (Acari: Tetranychidae) and tomato induced defence response
Interactions between arthropods and microorganisms have been receiving more attention due to the impact that these symbiotic associations causes on their macrosymbionts. Reproduction is the main biological parameters affected with cytoplasmic incompatibility and thelytokous parthenogenesis; however, endosymbionts can help arthropods to exploit host plants. I
Publicado em: 2010
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18. Determination of the antimutagenicity of an aqueous extract of Rhizophora mangle L. (Rhizophoraceae), using in vivo and in vitro test systems
An aqueous extract of Rhizophora mangle L. bark is used as raw material in pottery making in the State of Espirito Santo, Brazil. This extract presents large quantities of tannins, compounds possessing antioxidant properties. Tannin antioxidant activity, as a plant chemical defense mechanism in the process of stabilizing free radicals, has been an incentive
Genetics and Molecular Biology. Publicado em: 18/12/2009
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19. Caracterização dos componentes extracelulares produzidos em cultura de célula de Rubus fruticosus (amora-preta) durante resposta de hipersensibilidade / Characterization of the extracellular compounds released from Rubus fruticosus (blackberry) cell during a hypersensitive response.
The plant-pathogen interactions trigger a series of signals that are not yet completely understood. One of the mechanisms is the hypersensitive response (HR), which is characterized by cell death in the infection site in order to prevent pathogen proliferation. Our previous studies with different elicitors demonstrated the correlation between the formation o
Publicado em: 2009
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20. Identificação e expressão de genes da biossíntese do jasmonato na interação entre Theobroma cacao e Moniliophthora perniciosa / Identification and expression of genes associated with jasmonate biosynthesis in the Theobroma cacao and Moniliophthora perniciosa interaction
Witches broom disease of cacao (Theobroma cacao L.), caused by the basidiomycete Moniliophthora perniciosa is an important disease and the use of resistant varieties is the only economic and environmental long-term solution. Plant hormones are essential in the signaling network involved in the response against a variety of biotic and abiotic stresses. It is
Publicado em: 2009
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21. Induced resistance to the two-spotted mite Tetranychus urticae Koch (Acari, Tetranychidae) in strawberry plants / Resistência induzida ao ácaro rajado Tetranychus urticae Koch (Acari: Tetranychidae) em morangueiro
Plants previously attacked by herbivores may have their defense system activated. The defense forms may occur by different routes. Some of the unleashed routes take place right after the herbivory, when the plant starts responding in an indirect way through the production of volatile substances attractive to natural enemies of the infesting phytophagous. Ano
Publicado em: 2008
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22. Aspectos bioquímicos em plantas de cafeeiro tratadas com silício / Biochemical features in coffee plants treated with silicon
Most plants can defend themselves against fungal infections by natural means, which can be induced by a number of biotic and abiotic elicitors. Soluble silicon (Si) has been shown to induce resistance in a number of plant species against several pathogens. The objective of this work was to assess the influence of silicon application of symptoms caused by the
Publicado em: 2008
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23. Expressão de genes de resposta a estresses ambientais em mutantes defectivos de milho e Arabidopsis
Reverse genetics and gene expression analysis has been the main approach adopted in order to carry out the functional characterization of genes. Results from such studies have typically demonstrated that same gene can be involved in different cell functions. In this context, analysis of trehalose metabolism in plants has revealed that this pathway plays an i
Publicado em: 2008
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24. Interaction between Methylobacterium extorquens and sugarcane (Saccharum sp.) / Interação entre Methylobacterium extorquens e cana-de-açúcar (Saccharum sp.)
Plants produce a variety of defense enzymes when colonized that can impair the microorganismsestablishment. This adverse condition in the host plant lead to a response from the microorganism, which is associated with the synthesis of a set of proteins and other molecules that affect the interaction with the host and shift the bacterial community associated.
Publicado em: 2008