Fluazifop-p-butyl (FL) is one of the most popular graminicides from arylophenoxypropionate group.
These herbicides act as inhibitors of acetyl-CoA carboxylase (ACCase) that catalyzes the formation of mal-
onyl-CoA during metabolism of lipids and/or of some secondary compounds. On the other hand arylopro-
pionates and cyclohexanediones cause phytotoxic effects by stimulating free-radicals generation and
causing oxidative stress in susceptible plants. However, the importance of disturbances in plant pigments
and polyamines accumulation for this effect is not clear. The aim of this work is to quantify the phyto-
toxicity of FL to non target maize plant and to explain how photosynthetic pigments, anthocyanins
(ANC) and polyamines participate in this interaction.