A benzothiadiazole derivative induces systemic acquired resistance in tobacco
| Autor: | Theodor Staub, Leslie Friedrich, Manuela Gut Rella, Sandra Dincher, Kay A. Lawton, Peter Masner, Wilhelm Ruess, John Ryals, Scott Uknes, Beatrice Meier, Jean-Pierre Métraux, Nicole Specker, Helmut Kessmann |
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| Rok vydání: | 1996 |
| Předmět: |
Genetics
Nicotiana tabacum fungi Tobamovirus Cell Biology Plant Science Biology Plant disease resistance biology.organism_classification Cell biology body regions chemistry.chemical_compound chemistry Gene expression Tobacco mosaic virus Signal transduction skin and connective tissue diseases Salicylic acid Systemic acquired resistance |
| Zdroj: | The Plant Journal. 10:61-70 |
| ISSN: | 1365-313X 0960-7412 |
| DOI: | 10.1046/j.1365-313x.1996.10010061.x |
| Popis: | Summary Systemic acquired resistance (SAR) is a pathogen-induced disease resistance response in plants that is characterized by broad spectrum disease control and an associated coordinate expression of a set of SAR genes. Benzo(1,2,3)-thiadiazole-7-carbothioic acid S-methyl ester (BTH) is a novel synthetic chemical capable of inducing disease resistance in a number of dicotyledenous and monocotyledenous plant species. In this report, the response of tobacco plants to BTH treatment is characterized and the fact that it controls disease by activating SAR is demonstrated. BTH does not cause an accumulation of salicylic acid (SA), an intermediate in the SAR signal transduction pathway. As BTH also induces disease resistance and gene expression in transgenic plants expressing the nahG gene, it appears to activate the SAR signal transduction pathway at the site of or downstream of SA accumulation. BTH, SA and TMV induce the PR-1a promoter using similar cis-acting elements and gene expression is blocked by cycloheximide treatment. Thus, BTH induces SAR based on all of the physiological and biochemical criteria that define SAR in tobacco. |
| Databáze: | OpenAIRE |
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