Investigation of allelopathic effects of some phenolic acids on protein content and some anti-oxidative enzyme activities in pigweed (Amaranthus retroflexus)

Phenolic acids as secondary metabolites that are involved in allelopathy stress and they can be used to manage weeds. In the present study investigated the effects of some these compounds in concentrations of 0.5 and 2 mM on protein content and anti-oxidative enzymes pigweed plant. The seeds were cultured in ½ MS media containing one of the phenolic acids including: Syringic, p- Coumaric, m-Coumaric, p-hydroxy Benzoic, Vanillic and Ferulic acid for 25 days and then biochemical analysis were performed. The results were showed that high potential allelopathic compounds were caused reduce in water content and protein percent. Also scavenging free radicals process were disturbed because of damage on function of anti-oxidant enzymes spatially catalase and peroxidas. In the almost treatments, activity of superoxide dismutase was increased relative to the control.