Tiadinil TDL Thiazole Derivatives

TDL exhibited excellent activity against rice blast, and the control activity even lasted more than 80 days after treatment. When TDL was applied at 7-20 days before the first appearance of leaf blast, TDL showed stable control activity and was not affected under various field eonditions, such as infection pressure of disease, type of soil, depth of paddy water or depth of transplanted seedlings. TDL exhibited additional control activity against some bacterial diseases in field trials, such as rice bacterial leaf blight and grain rot, which suggested that TDL was adaptable to the simultaneous control of a wide range of rice diseases in practical use. 

Results from induction of resistance in tobacco against TMV by TDL showed that TDL could induce SAR-like disease resistance by evoking PR gene expression in tobacco, the same as SA, BTH and TDL did 

Plant activators BTH and TDL both contain the same struetural moiety  

3- thiadiazole. As a class of compounds with various interesting properties, 

3- thiadiazoles are becoming a rapidly growing and independent branch of chemistry. Many 1,2,3-thiadiazoles have shown biologieal aetivities, such as antiviral, systemic acquired resistance, and fungieidal.  

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