Although glyphosate is believed to be relatively safe for environment,
since its rapid soil sorption, and thus resistance to leaching,
rapid biodegradation and low toxicity to mammals, birds and
fish, it may induce an abiotic stress within plants and other organisms
of the ecosystem [3]. Decrease of ribulose-1,5-diphosphate
carboxylase/oxygenase (Rubisko) large subunit and increase in
accumulation of antioxidant enzymes, including ascorbate peroxidase
(APX), glutathione S-transferase (GST), thioredoxin h-type,
nucleoside diphosphate kinase 1 (NDPK1), peroxiredoxin and chloroplast
precursor of superoxide dismutase [Cu–Zn] (SOD) within
rice leaves treated with glyphosate suggests, that the herbicide
generated oxidative stress within plant tissues [6]. Similar antioxidant
response to the glyphosate treatment showed soybean roots
and it was followed by increase in catalase (CAT) and APX activity
[7]. While in leaves, the activity of guaiacol peroxidase (GOPX) was
elevated and CAT activity was reduced