Impact of Nanosized Titanium Dioxide on Agronomical and Physiological Characteristics of Annual Medic (Medicago scutellata L.)

Dolatabadi, Abas Rafiei; Sani, B. M.; Moaveni, Payam; December, Received

doi:10.1515/cerce-2015-0041

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…Algal species contain enzymatic and non-enzymatic antioxidant defense systems to protect cells from oxidative damages (El-Baky et al 2007). The primary scavenging enzymatic defense systems include superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) (Dolatabadi et al, 2015). Non-enzymatic defense compounds are composed of carotenoids, phenols, ascorbic acid and chlorophyll derivates (El-Baky et al 2007;Zafar et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Toxicity Mechanisms of ZnO Nanoparticles in Nanochloropsis Oculata with a Comparative Approach with CuO and Ag Nanoparticles

Fazelian

Mvafeghi

Yousefzadi

2021

Preprint

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The purpose of present work was the investigation of different concentrations of zinc oxide nanoparticles on the marine microalga Nannochloropsis oculata and compare the results of this study with previous studies. Dissolution of ZnO NPs in nanopure water was 0.378-3.12 mg/L and the rate solubility decreased with increasing the concentrations of ZnO NPs. ZnO NPs were toxic to this microalga with EC50 of 153/72 mg/L. The toxicity of 200 mg/L ZnO NPs was 59.36% for the cell number, 61.27% for MTT test, and 57.34% for the chlorophyll content. Increase the content of malondialdehyde and hydrogen peroxide in response to increasing the concentration of ZnO NPs was indicated the induction of oxidative stress in N. oculata. The activity of catalase and lactate dehydrogenase increased in the treated cells, while the activity of ascorbate peroxidase was decreased. Concurrently, an increase in the content of carotenoids and phenolic compounds was observed in the treated cells. SEM and TEM analyses confirmed the aggregation of algal cells, damages in cell membrane and atypical changes in morphology of cell wall after NPs treatments. The FTIR results cofirmed the interaction of ZnO NPs with C-H, C-O and C=O groups on the cell surface. All of these changes were indicated the significant toxic impacts of ZnO NPs on the N. oculata cells. Comparison between the results obtained in previous studies with our results showed that the defensive mechanisms of N. oculata probably was not effective against the oxidative stress by >10 mg/L of ZnO NPs, > 5 mg/L of CuO NPs and > 1 mg/L of Ag NPs. Therefore, N. oculata is sensitive to such concentrations of these NPs.

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Section: Introductionmentioning

confidence: 99%

“…Nanoparticles (NPs) as atomic or molecular aggregates with a diameter of 1 -100 nm possess different physical and chemical properties compared to the bulk materials (Dolatabadi et al 2015). The usage of engineered metal oxide NPs has increased in recent years in material science and commercial products (Aravantinou et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Toxicity Mechanisms of ZnO Nanoparticles in Nanochloropsis Oculata with a Comparative Approach with CuO and Ag Nanoparticles

Fazelian

Mvafeghi

Yousefzadi

2021

Preprint

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“…In one study on fennel plants, it was observed that treatment with 60 ppm titanium dioxide nanoparticles significantly improved the seed germination percentage and germination rate (Feizi et al, 2013). In addition, the highest mean activity of ascorbate peroxidase, guaiacol peroxidase, and catalase enzymes on annual medic plant (Medicago scutellata L.) was found in foliar application of titanium nanoparticles in 0.06 % concentration (Dolatabadi et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Titanium dioxide nanoparticles alleviate cadmium toxicity in lentil (Lens culinaris Medic) seeds

Feizi

Agheli

Sabahi

2020

AAS

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This research was carried out with the aim of investigating the effects of different concentrations of titanium dioxide nanoparticles and cadmium on lentil seed germination and seedling early growth. The experiment was conducted as a factorial layout based on a completely randomized design with four replicates. Test plants were exposed to 0, 100, 250, and 500 ppm of cadmium, and then amended with 0, 100, 200, and 300 ppm of TiO2 nanoparticles. Results demonstrated that the application of 300 ppm of titanium dioxide nanoparticles improved the mean germination time (MGT) and seed germination rate by 39 % and 62 % respectively. Most traits exhibited a decreasing trend as the concentration of cadmium increased. Furthermore, application of 500 ppm of cadmium concentration increased mean germination time compared to the control group (1.667 day). In conclusion, the application of titanium dioxide nanoparticles averted the effect of high cadmium stress on lentils, and maintained the length of the shoot compared to the control. However, further studies on plant life cycles should be performed to detect the inhibitory effects of titanium dioxide on heavy metal toxicity.

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Nanofertilizers: A Promising Approach to Boost Plant Health and Yield

Chatterjee,

Ravishankar Rai

2023

Nanotechnology in the Life Sciences

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Impact of Nanosized Titanium Dioxide on Agronomical and Physiological Characteristics of Annual Medic (Medicago scutellata L.)

Cited by 7 publications

References 8 publications

Toxicity Mechanisms of ZnO Nanoparticles in Nanochloropsis Oculata with a Comparative Approach with CuO and Ag Nanoparticles

Toxicity Mechanisms of ZnO Nanoparticles in Nanochloropsis Oculata with a Comparative Approach with CuO and Ag Nanoparticles

Titanium dioxide nanoparticles alleviate cadmium toxicity in lentil (Lens culinaris Medic) seeds

Nanofertilizers: A Promising Approach to Boost Plant Health and Yield

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