Hydroxamic acids (4-hydroxy-1,4-benzoxazin-3-ones), defence chemicals in the gramineae
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Hydroxamic acids of the type 4-hydroxy-1,4-benzoxazin-3-ones constitute one of the most extensively studied secondary metabolites in relation to host plant resistance to pests and diseases. They play a major role in the defence of cereals against insects, fungi and bacteria, in the detoxification of herbicides and in allelopathic efrects of the crop. Although other mechanisms have also a bearing on these effects, more intensive exploitation of hydroxamic acids in cereal crops is indicated. © 1988.
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