Effect of Zinc Oxide Nanoparticles (ZnO‐NPs) on Seed Germination Characteristics in Two Brassicaceae Family Species: Camelina sativa and Brassica napus L

Abstract

Introduction. Zinc is one of the essential micronutrients for living organisms; so, the right performance of several enzymes depends on this element. This micronutrient is a regulator of phytohormones and chlorophyll synthesis, and also, it is an essential element for the carbohydrates’ metabolisms in plants. Considering the relatively high solubility of ZnO-NPs and also the ability of plants to uptake and accumulate these nanoparticles in their biomass, ZnO-NPs can be used as an effective nanofertilizer for plants’ growth. Methods. In the present study, zinc oxide nanoparticles synthesized using chemical method and the effect of ZnO-NPs (as a nanofertilizer) on seeds’ germination, seedlings’ rootlet, seedlings’ plumule, and seedling’s vigour index in two oilseed crops from the Brassicaceae family, including Brassica napus L. and Camelina sativa, were investigated. After treating the seeds with different concentrations of ZnO-NPs (from 0.1 to 1000 ppm) for 6 days, the germination percentage (GP) of each treatment was measured. Results. The results indicated an increase in GP for both plants treated with 10 ppm ZnO-NPs. For B. napus, the maximum GP occurred in treated seeds with 5 ppm ZnO-NPs which showed a 30% increase of GP compared with the control condition. For Camelina, this maximum GP was observed in 0.1 ppm concentration of ZnO-NPs which showed a 15% increase compared with the control condition. After the germination test, germinated seedlings were planted in Hoagland hydroponic solution and treated with ZnO-NPs again for a week. For both species, treatment with ZnO-NPs showed a great effect on rootlet growth, while the effects of these treatments on plumule were negligible. The maximum rootlet length was observed in treated B. napus seedlings with 5 ppm ZnO-NPs which showed a 32% increase in this parameter compared with the control condition. In contrast, the high concentrations of ZnO-NPs showed toxic effects on B. napus seedlings’ rootlets. Results showed a 41% decrease in B. napus seedlings treated with 50 ppm ZnO-NPs compared with control seedlings. Similar results were observed in the treated seedlings of Camelina. For Camelina seedlings treated with 1 ppm ZnO-NPs, 15% increase in rootlets’ length was observed, while treated Camelina seedlings with 50 ppm ZnO-NPs showed a 68% decrease in rootlet length compared with the control condition. The results of this study indicated the potential of using ZnO-NPs as nanofertilizer for B. napus and Camelina in low concentrations (lower than 10 ppm). In addition, these results suggest the toxicity effects of these nanoparticles on both species in concentrations higher than 50 ppm.

Nano-lipid Contrast Agent Combined with Ultrasound-Guided SGB in Nursing Treatment of Lymphedema after Breast Cancer Surgery

“…In this paper, we hope that the composite nano drugs can inhibit more types of tumor cells, discuss the possibility of broad-spectrum anti-tumor, or use nano-lipid contrast materials to carry other anti-tumor drugs to induce apoptosis of specific types of tumor cells. The above results show that the nano-lipid contrast agent platform designed in this paper can effectively combine the advantages of the nano-lipid contrast agent and SGB, and provide a new direction for the development of photodynamic therapy in the field of cancer (25)(26)(27)(28)(29).…”

“…Using nanomaterials as drug carriers to make anticancer drug nano-preparations can overcome the above shortcomings. Nano drug preparation is easy to be administered and the residence time in the blood circulation system is greatly prolonged (25)(26)(27).…”

“…HA is mainly used as a vitreous supplement in ophthalmic surgery and a viscoelastic supplement in the treatment of osteoarthritis. The intelligent nanolipid contrast agent constructed by biomaterials has shown excellent advantages in tumor immunotherapy and has broad development prospects (27)(28). However, most of the studies are still limited to the animal level, and there are still many challenges in future clinical conversion.…”

CoO Nanoparticles Combined with MRI: Analysis of No-Reflow in Patients with Acute ST-Segment Elevation Myocardial Infarction after PCI and the Effect of Coronary Nicorandil

“…Compared with the model group, the myocardial infarction area (NA/AAR%) and no-reflow (ANR/AAR%) of the adenosine group and nicorandil group were significantly reduced (P<0.01). It shows that nicorandil and adenosine can reduce the area of myocardial infarction, improve coronary perfusion after myocardial infarction, and increase the ratio of myocardial reflow after myocardial reperfusion (29)(30)(31)(32)(33)(34)(35)(36)(37)(38).…”

Agronomic evaluation of shade tolerance of 16 spring Camelina sativa (L.) Crantz genotypes under different artificial shade levels using a modified membership function

“…Although camelina is not a well-known or widely cultivated crop, it has an ancient history dating back to 4,000 BCE ( Knörzer, 1978 ; Berti et al, 2016 ). In the last decade, many studies in camelina genetics ( Betancor et al, 2015 ; Bansal and Durrett, 2016 ), applications ( Mafakher et al, 2022 ; Sarkhosh et al, 2022 ), agronomic management ( Gesch, 2014 ; Berti et al, 2017 ; Zanetti et al, 2017 ; Walia et al, 2021 ), and ecological safety ( Zhang and Auer, 2019 , 2020 ; Zhang et al, 2020 ) have demonstrated the great interest and potential of this crop due to its multiple uses, such as feedstock for biofuel, food oil source, animal feed, and many more.…”