Effect of herbicides in the oxidative stress in crop winter species

Abstract

Most herbicides applied in crop field, stay in the soil for a period, affecting next crop or even the plants using as green manure. Nowadays, the use of herbicides grow to increase productivity, mainly in the grain producing region north of Rio Grande do Sul state. The objective of this study was to evaluate the effects of herbicides fomesafen and sulfentrazone on antioxidant system in Avena sativa1, Vicia sativa2, Raphanus sativus and Lupinus albus. The plants were exposed to varying concentrations of fomesafen3 (0, 0.125, 0.25 and 0.5 kg ha -1) and sulfentrazone (0, 0.3, 0.6 and 1.2 kg ha-1). For this, the activities of, ascorbat peroxidase, catalase and guaiacol enzymes were analyzed, and the levels of MDA were quantificated. Fomesafen and sulfentrazone promoted alterations in balance of plants generating oxidative stress and elicited the response of the antioxidant system of plants, mainly in the high doses of fomesafen, for the species V. sativa and R. sativus. At the same time, the 1,2 kg ha -1 dose of sulfentrazone generated lipid peroxidation for V. sativa, R. sativus and L. albus. Additionally, A. sativa was the species that demonstrated low alterations on antioxidant system with the exposure to herbicide fomesafen and sulfentrazone. Thus, we can we can suggest that the species present a better response in defense of the oxidative stress generated by the herbicides.

Effect of New Pre-Emergence Herbicides on Quality and Yield of Potato and Its Associated Weeds

“…Compared to un-weeded control, the value of MDA content was increased by 52.7%, 45.4%, 21.8%, 18.1%, and 17.08% for Kroki, Ecopart, Zeus, Sencor, and Flomex, respectively. These results are contradictory to those by Alves et al [41], who observed that lipid peroxidation (MDA formed) in shoot tissues of Vicia sativa clearly increased after fomesafen application. Additionally, after bentazone application in two peanut cultivars, MDA contents increased, indicating occurrence of lipid peroxidation and oxidative stress Regarding to lipid peroxidation, lipid peroxidation produces malondialdehyde (MDA), a product of the breakdown of fatty acids of membranes, which causes a collapse to plant cells [40].…”

“…Exposure of preemergent herbicide oxyfluorfen resulted in increased activity of superoxide dismutase and CAT in rice compared to control [49]. In the research of Alves et al [41], the effect of herbicide exposure on the promotion of oxidative stress and response of antioxidant defense mechanism depended on the species used. In their study, fomesafen causes a significant decrease in CAT activity in Vicia sativa, but activity increased in Avena sativa.…”

Characterization and management of metsulfuron‐resistant Rumex dentatus biotypes in Northwest India

“…In many research studies, malathion has proven to reverse the resistance in many resistant weed species (Dhawan, 2004; Dhawan & Gupta, 2007; B. Zhao et al., 2017). Moreover, antioxidant enzymes such as SOD, CAT, and APX play a crucial role in endowing herbicide resistance and their higher activities in the weed plants may impart resistance to herbicides (Alves et al., 2018; Cummins et al., 1999). In this study, the activity of different enzymes (SOD, CAT, and APX) in resistant toothed dock biotypes was not affected by malathion pre‐treatment (Supplemental Table S6).…”

Effect of Seasonal Variation on the Persistence and Dissipation Behaviour of the Herbicide Mixture of Fomesafen + Quizalofop-Ethyl in Tropical Soybean Agroecosystem and Safety Risk Assessment

“…Fomesafen is a contact herbicide of the nitrodiphenyl ether chemical class. It controls broad leaf weeds by inhibiting the enzyme protoporphyrinogen oxidase (Alves et al 2018). Quizalofop-ethyl is a systemic postemergence herbicide of the aryloxy phenoxy propionate chemical family, which controls both annual and perennial grasses by inhibiting the enzyme acetyl coenzyme A carboxylase (Janaki et al 2018).…”