Salicylic Acid Pretreatment Modulates Wheat Responses to Glyphosate

Glyphosate is an extensively used herbicide because of its non-selective action for weed control. Salicylic acid (SA) a phenolic compound that has the potential to increase plant tolerance diverse stresses. To test SA ability modulate responses glyphosate we young wheat (Triticum aestivum L.) seedlings grown as water culture. Plants were sprayed with 1 mM SA, and 24 h later 0.5 glyphosate. All measurements performed 14 days after treatment. Wheat growth was reduced by Stress markers (proline malondialdehyde) significantly increased showing oxidative damages. Incapacity cope stress evidenced reduction in thiols phenolics content, accompanied slight induction superoxide dismutase catalase activities. Enhanced activities peroxidase, glutathione reductase glutathione-S-transferase expected participate detoxification. applied alone had no important effects on measured parameters. pretreatment decreased caused additional amplification antioxidant defense systems glyphosate-treated plants. Growth partially restored combine-treated plants due application. probably triggered stress.