A benzothiadiazole derivative induces systemic acquired resistance in tobacco
Article first published online: 7 FEB 2003
The Plant Journal
Volume 10, Issue 1, pages 61–70, July 1996
How to Cite
Friedrich, L., Lawton, K., Ruess, W., Masner, P., Specker, N., Rella, M. G., Meier, B., Dincher, S., Staub, T., Uknes, S., Métraux, J.-P., Kessmann, H. and Ryals, J. (1996), A benzothiadiazole derivative induces systemic acquired resistance in tobacco. The Plant Journal, 10: 61–70. doi: 10.1046/j.1365-313X.1996.10010061.x
- Issue published online: 7 FEB 2003
- Article first published online: 7 FEB 2003
- Received 15 December 1995; revised 22 March 1996; accepted 17 April 1996.
- Cited By
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.