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(a) Wurtzite structure of ZnO, Ag-doped ZnO, Au doped ZnO, and Mg-doped ZnO NCs. Growth inhibition zone for Xanthomonas campestris pv. campestris treated with (b) Ag-doped ZnO NCs and (c) Au doped ZnO NCs, at 100; 10; 1; 0.1; and 0.01 mg/mL. Strep. = streptomycin. Symptoms of bacterial spot-on tomato leaves, (d) caused by Xanthomonas gardneri, (e) with Mg-doped ZnO NCs showing disease control.
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https://www.intechopen.com/online-first/doped-semiconductor-nanocrystals-development-and-applications
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Context 1
... nanocrystals of ZnO in this work have a wurtzite structure, and silver (Ag), gold (Au), and magnesium (Mg) ions were doped in ZnO NCs, as shown in Figure 1a. The Ag or Au doped ZnO NCs inhibited Xanthomonas campestris pv. ...
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... Ag or Au doped ZnO NCs inhibited Xanthomonas campestris pv. camprestris growth, at 100 and 10 mg/mL (Figure 1b,c). Other elements can also inhibit, such as, Mg ions that inhibited the growth of Xanthomonas gardneri, and reduced the severity of tomato bacterial spot (Figure 1e), and controlled the bacteria present in tomato seeds [31]. ...
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... growth, at 100 and 10 mg/mL (Figure 1b,c). Other elements can also inhibit, such as, Mg ions that inhibited the growth of Xanthomonas gardneri, and reduced the severity of tomato bacterial spot (Figure 1e), and controlled the bacteria present in tomato seeds [31]. Therefore, nanotechnology could sustainably mitigate many challenges in disease management by reducing agrochemical use [32]. ...
Context 4
... nanocrystals of ZnO in this work have a wurtzite structure, and silver (Ag), gold (Au), and magnesium (Mg) ions were doped in ZnO NCs, as shown in Figure 1a. The Ag or Au doped ZnO NCs inhibited Xanthomonas campestris pv. ...
Context 5
... Ag or Au doped ZnO NCs inhibited Xanthomonas campestris pv. camprestris growth, at 100 and 10 mg/mL (Figure 1b,c). Other elements can also inhibit, such as, Mg ions that inhibited the growth of Xanthomonas gardneri, and reduced the severity of tomato bacterial spot (Figure 1e), and controlled the bacteria present in tomato seeds [31]. ...
Context 6
... growth, at 100 and 10 mg/mL (Figure 1b,c). Other elements can also inhibit, such as, Mg ions that inhibited the growth of Xanthomonas gardneri, and reduced the severity of tomato bacterial spot (Figure 1e), and controlled the bacteria present in tomato seeds [31]. Therefore, nanotechnology could sustainably mitigate many challenges in disease management by reducing agrochemical use [32]. ...
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Citations
... The incorporation of the chemical element Europium (Eu) to the TiO 2 nanoparticle (Eu 3+ -doped TiO 2 ) confers long-lasting fluorescent properties, photostability, and clear visible emission bandwidth [20,21]. Moreover, it can improve nanocrystal biocompatibility [22], mitigating toxicity problems beyond the influence of optical behavior [23]. These characteristics facilitate in vivo tracking of TiO 2 and help in the investigation of its risks to organisms and the relationship between its structure and function. ...
Titanium dioxide (TiO2) nanoparticles (NPs) are widely used in industry and commercial products. Thus, their potential risks to the environment and human health must be evaluated. Doping NPs with certain ions makes it possible to mix properties or generate new ones. Thus, in order to track TiO2 NPs in biological assays, doping with europium (Eu3+) ions was performed, which luminesce in red. Here, we synthesized TiO2 and Eu3+-doped TiO2 nanocrystals (NCs) in anatase phase to verify the toxicity at different concentrations in Drosophila melanogaster and track the distribution of these NCs in vivo. We verified that the incorporation of europium improved the biocompatibility in relation to the pure samples. The presence of Eu3+-doped TiO2 NCs in the gut, brain, and fat body of larvae and intestinal cells of adult animals was detected. Eu3+-doped TiO2 NCs caused significant larval and pupal mortality rates, in addition to leading to the formation of reactive species, especially at high concentrations. Therefore, our data demonstrated it was possible to trace the Eu3+-doped TiO2 NCs, but TiO2 and Eu3+-doped TiO2 NCs in anatase phase were toxic to fruit flies at the tested concentrations, and should be used with caution to minimize health risks.
The incorporation of nanoparticles into sensors or with antimicrobial and fertilizer properties in agriculture signifies a paradigm shift toward accuracy and sustainability. This chapter shows the numerous uses of nanoparticles and nanoparticle-based sensors in agribusiness. Their innovative contribution to promoting eco-friendly practices is examined. A bounty of advancements that maximize yields and contribute to a sustainable agricultural future is promised by these bactericidal nanoparticles, sensor technologies, and enhanced fertilizers, which sow the seeds of creativity. The discussion explores the potential of nanoparticles to transform farming practices, diminish environmental harm, and cultivate a progressive, eco-conscious farming landscape. Nanoparticle-based sensors provide data for informed decision-making, bactericidal nanoparticles protect crops from harmful pathogens, and nanotechnology enhances fertilizers for nutrient delivery and plant uptake.
