Harpin
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Effect of Harpin protein as an elicitor on the content of phenolic compounds and antioxidant capacity in two hydroponically grown lettuce (Lactuca sativa L.) varieties.
Abstract Harpin protein was used as an elicitor in green (butterhead) and red (oak leaf type) varieties of hydroponically grown lettuce (Lactuca sativa L.). Its impact on polyphenolic content and antioxidant capacity was evaluated. Harpin protein was sprayed three days before harvesting in concentrations of 45, 60, and 120 mg/L. Green lettuce samples showed
Food Sci. Technol. Publicado em: 13/12/2018
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2. Genetic Transformation of Sugarcane with SspPIP1;1 and SspPIP1;4 genes / Transformação genética de cana-de-açúcar com genes da aquaporina SspTIP1;1 e SspPIP1;4
A cana-de-açúcar vem assumindo um papel de destaque na atual conjuntura nacional, impulsionada principalmente pela produção de etanol, que vai de encontro com a crescente preocupação mundial na busca por fontes de energias renováveis e menos impactantes ao ambiente. Por essa razão, é preciso assegurar o contínuo desenvolvimento técnico-científico
Publicado em: 2010
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3. Alterações celulares correlacionadas com a resistência induzida pela proteína Harpin em maçã contra o mofo azul
A proteína harpin está envolvida com a patogênese de Erwinia amylovora em maçã. Utilizou-se microscopia para estudar alterações celulares induzidas pela harpin que sejam correlacionadas com a resistência de maçã contra Penicillium expansum. Microscopia de varredura da superfície de ferimentos inoculados mostrou que o fungo iniciou colonização do
Tropical Plant Pathology. Publicado em: 2008-04
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4. Sweet orange (Citrus sinensis L. Osbeck) genetic transformation with the hrpN gene (harpin) and evaluation for citrus canker (Xanthomonas axonopodis pv. citri) resistance / Transformação genética de laranja doce (Citrus sinensis L. Osbeck) com o gene hrpN (harpina) e avaliação da resistência ao cancro cítrico (Xanthomonas axonopodis pv. citri)
The citrus industry has a great economic and social importance for Brazil, which is considered largest producer and orange juice exporter in the world. However, serious problems related to pathogens have affected citrus production and quality. With the development of genetic engineering and the characterization of genes related with plant disease resistance,
Publicado em: 2007
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5. Efeito da quitosana e da radiação UV-C no controle de Guignardia citricarpa em laranja pós-colheita / Effect of chitosan and UV-C on the control of Guignardia citricarpa on postharvest orange
Brazil is the biggest producer and exporter of orange juice, and this is one of the most important economical activities for the country. The fruits can be affected by the citrus black spot, disease caused by the fungus Guignardia citricarpa, which depreciates then commercially, causes premature fall and increases the production cost. Alternative measures to
Publicado em: 2007
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6. A Harpin Binding Site in Tobacco Plasma Membranes Mediates Activation of the Pathogenesis-Related Gene HIN1 Independent of Extracellular Calcium but Dependent on Mitogen-Activated Protein Kinase Activity
Harpin from the bean halo-blight pathogen Pseudomonas syringae pv phaseolicola (harpinPsph) elicits the hypersensitive response and the accumulation of pathogenesis-related gene transcripts in the nonhost plant tobacco. Here, we report the characterization of a nonproteinaceous binding site for harpinPsph in tobacco plasma membranes, which is assumed to medi
American Society of Plant Physiologists.
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7. Harpin Induces Activation of the Arabidopsis Mitogen-Activated Protein Kinases AtMPK4 and AtMPK6
Mitogen-activated protein kinases (MAPKs) are key enzymes that mediate adaptive responses to various abiotic and biotic stresses, including pathogen challenge. The proteinaceous bacterial elicitor harpin (secreted by Pseudomonas syringae pv syringae) activates two MAPKs in suspension cultures of Arabidopsis var. Landsberg erecta. In this study, we show that
American Society of Plant Physiologists.
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8. Harpin, An Elicitor of the Hypersensitive Response in Tobacco Caused by Erwinia amylovora, Elicits Active Oxygen Production in Suspension Cells.
Active oxygen (AO) production and a K+/H+ exchange response (XR) are two concurrent early events associated with incompatible plant-bacteria interactions that result in a hypersensitive response (HR). Recently, a protein, termed harpin, produced by Erwinia amylovora has been reported to be the elicitor responsible for the HR caused by this pathogen. Although
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9. HrpI of Erwinia amylovora functions in secretion of harpin and is a member of a new protein family.
HrpI, a 78-kDa protein, functions in the secretion of harpin, a proteinaceous elicitor of the hypersensitive response from Erwinia amylovora. The predicted amino acid sequence of HrpI is remarkably similar to that of LcrD of Yersinia species, the first member of a recently described protein family. Other proteins of the family are MixA from Shigella flexneri
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10. Downstream Divergence of the Ethylene Signaling Pathway for Harpin-Stimulated Arabidopsis Growth and Insect Defense1
Ethylene (ET) signal transduction may regulate plant growth and defense, depending on which components are recruited into the pathway in response to different stimuli. We report here that the ET pathway controls both insect resistance (IR) and plant growth enhancement (PGE) in Arabidopsis (Arabidopsis thaliana) plants responding to harpin, a protein produced
American Society of Plant Biologists.
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11. Rapid and Transient Activation of a Myelin Basic Protein Kinase in Tobacco Leaves Treated with Harpin from Erwinia amylovora.
Harpins are bacterial protein elicitors that induce hypersensitive response-like necrosis when infiltrated into nonhost plants such as tobacco (Nicotiana tabacum L.) (Z.-M. Wei, R.J. Laby, C.H. Zumoff, D.W. Bauer, S.Y. He, A. Collmer, S.V. Beer [1992] Science 257: 85-88). Activity of a 49-kD Mg2+-dependent and Ca2+-independent kinase in tobacco leaves increa
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12. The Pseudomonas syringae pv. tomato HrpW Protein Has Domains Similar to Harpins and Pectate Lyases and Can Elicit the Plant Hypersensitive Response and Bind to Pectate
The host-specific plant pathogen Pseudomonas syringae elicits the hypersensitive response (HR) in nonhost plants and secretes the HrpZ harpin in culture via the Hrp (type III) secretion system. Previous genetic evidence suggested the existence of another harpin gene in the P. syringae genome. hrpW was found in a region adjacent to the hrp cluster in P. syrin
American Society for Microbiology.