Seed germination with titanium dioxide nanoparticles enhances water supply, reserve mobilization, oxidative stress and antioxidant enzyme activities in pea

Abstract

The nanoparticle has been reported to have severe effects and metabolic disorders in crops. Analysis of poisoning exposure to titanium dioxide is very important during the seed germination stage. Measuring the levels of water supply, reserve mobilization and redox metabolism with germination success is a prerequisite for understanding the TiO 2 stress mechanism. These measurements are carried out using different methods, including germination tests, determination of growth parameters, analysis of reserve mobilization processes and redox activities under different stress conditions. The significant effects (P < 0.05) of TiO 2 on seed germination were determined by analysis of variance (2 ways-ANOVA). We considered the effect of TiO 2 dose (0 and 50 mg/L) and time of exposure (1,2,3,4 and 5 days). The results showed that TiO 2 treatment significantly affected the germination rate (GR), the mean daily germination (MDG), the tissues dry weights, water supply, solute leakage, and induced oxidative stress and antioxidant enzyme activities. Oxidative and metabolic disturbances are among the major causes of the successful germination of pea seeds.

Foliar spray of Si and Ti nanoparticles affected enzymatic antioxidants in rapeseed (Brassica napus L.)

“…A possible explanation for this might be that GPX is ubiquitous haem-containing enzyme participating in many physiological processes such as ROS scavenging. Some authors have speculated that nanoparticles treatments triggered the accumulation of reactive oxygen species, increased production of stress enzymes that ultimately lead to a better and more stable redox status (Basahi, 2021). Despite the stimulation of the antioxidant system in the rapeseeds plants initiated by nanoparticles spray, it appears that there was a significant lipid peroxidation activity and MDA production especially in Alonso variety.…”

“…TiO2 nanoparticles are also used as an essential nutrient for plant growth and development and also improves the photosynthetic pigments in plants such as chlorophylls, carotenoids and anthocyanins contents, therefore, enhanced the crop growth and yield (Chaudhary and Singh, 2020). Modern management of companies, regardless of the activity in which the company operates, requires top management to apply and introduce internal control mechanisms (Popović et al, 2020c;2021). Despite the plenty of information available on foliar application of some nanoparticles on plant growth and development, there is no sufficient information about efficiency of Si and Ti nanoparticles under natural farm conditions in semi-arid regions where water scarcity and high temperature have negative impacts on plants.…”