Patent ID: 8603945

Claim:
A plant protecting composition comprising a diluent and/or carrier and a compound of general formula I: or salt thereof, wherein: R 1 is C, N or S; R 2 and R 4 are each independently a hydrogen, sulfide, alkyl, hydroxyl, alkoxide, amino, mercapto, alkyl sulfide, thionyl, halo, cyano, nitro or carboxylate; R 3 and R 9 can be a hydrogen, alkyl, halo or mercapto, wherein at least one of R 3 and R 9 is a halogen; A 1 is selected from the group consisting of a carbon, nitrogen, oxygen and sulfur; and A 2 is nitrogen or —NHR 8 wherein R 8 is —H, or an alkyl; wherein when A 1 or A 2 is a nitrogen then R 5 , R 6 , R 7 or R 8 is a hydrogen; wherein when A 1 is a carbon then A 1 is either —COOH or a carboxyalkyl; wherein the composition comprises an effective amount or concentration of the compound so as to induce modulation of a resistance gene or a gene from Table I, or induce pathogen or disease resistance in a plant; and wherein the diluent and/or carrier is suitable for application to plants and/or seeds of plants.