Effect of the Pesticide Treatment Dose on the Biochemical Response of the Potato Plants (Solanum Tuberosum L.)

Abstract

In order to enhance and protect crop yields from different pests, the use of pesticides has increased. In Algeria, most often farmers do not respect the recommended dose of pesticides. The aim of this study is to investigate the dose effect of applying pesticides in field conditions at standard and double doses (agronomic dose, AD; agronomic double dose, ADD) on the morphological and biochemical responses of potato plants (Solanum tuberosum L.). Our result showed significant effect of pesticide application on the biochemical and antioxidant properties of the plant. Higher contents of phenolic and flavonoid were noticed in plants treated with AD and ADD. The accumulation of malondialdehyde increases lipid peroxidation due to the excessive reactive oxygen species production. The significant increase of catalase, ascorbate peroxidase and phenylalanine ammonia lyase activities were recorded in the final growth stage compared with control. AD increases proline content in the final growth stage, but a decrease for chlorophylls and carotenoids. In addition, the decrease in thiols level was observed for both growth stages. In conclusion, the results demonstrated that treatments with pesticides at higher doses than recommended caused oxidative disturbances in potato plants and lead to an enhanced capacity of antioxidant enzymes.

Effects of thiamethoxam on physiological and molecular responses to potato plant (Solanum tuberosum), green peach aphid (Myzus persicae), and parasitoid (Aphidius gifuensis)

“…Pesticide concentration increases have been observed to be moderately associated with the oxidative stress generated by pesticide application 31 . In the current study, the antioxidant enzyme activities and genes of potato plants increased at different concentrations of thiamethoxam as compared with the control, and the results are consistent with research by Amiri et al 32 . who discovered that the biochemical and antioxidant characteristics of the potato plant were significantly affected by the application of pesticides.…”

Changes in the content of carotenoids in potato tubers cultivated with or without the application of fungicides

“…Similar results obtained by Amiri et al. (2022) shows significant effect of pesticide application on the biochemical and antioxidant properties of potato plants. The authors noticed an increase in the phenolic, flavonoid, and proline contents and a decrease in the chlorophyll and carotenoids.…”

The Influence of Humic Acids and Nitrophenols on Metabolic Compounds and Pesticide Behavior in Wheat under Biotic Stress

“…It has been reported that treatments based on butachlor (H), chlorpyrifos (I), and tricyclazole (F) modulate the carbohydrate, amino acid, and fatty acid metabolism [6], while the herbicides linuron, clomazone, and metribuzin cause an increase in polyphenol content [7]. Amiri et al [8] determined a decrease in photosynthetic dyes and improvements in phenolic compounds, flavonoids, and carbohydrate levels in potato under exposure to different types of pesticides: abamectin (I), cymoxanil (F), and metribuzin (H). As agents supporting the health of the target plant, biostimulators can mitigate the adverse effects of oxidative stress [9].…”