Foliar absorption and field herbicidal studies of atrazine-loaded polymeric nanoparticles

Takeshita, Vanessa; Sousa, Bruno Teixeira de; Preisler, Ana Cristina; Carvalho, Lucas Bragança; Pereira, Anderson do Espírito Santo; Tornisielo, Valdemar Luiz; Dalazen, Giliardi; Oliveira, Halley Caixeta; Fraceto, Leonardo Fernandes

doi:10.1016/j.jhazmat.2021.126350

Cited by 44 publications

(74 citation statements)

References 60 publications

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“…Research focusing on the foliar applications of pesticide entrapped nanoparticles is often conducted as these plant tissues are frequently exposed to pests and environmental conditions. For example, Takeshita et al found that when performing a foliar application of atrazine entrapped PCL nanoparticles on the Florida broad lead mustard, atrazine absorption and translocation were higher for the nanoentrapped compound in comparison to the free atrazine (Takeshita et al 2021). This effect was attributed to the negative charge of the nanoparticles preventing electrostatic interactions with the cell walls, resulting in its distribution through the apoplast and vascular tissues.…”

Section: Introductionmentioning

confidence: 99%

Zein and lignin-based nanoparticles as soybean seed treatment: translocation and impact on seed and plant health

et al. 2022

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Zein nanoparticles (ZNPs) were synthesized with a cationic surfactant, didodecyldimethylammonium bromide (122.9 ± 0.8 nm, + 59.7 ± 4.4 mV) and a non-ionic surfactant, Tween 80 (118.7 ± 1.7 nm, + 26.4 ± 1.1 mV). Lignin-graft-poly(lactic-co-glycolic) acid nanoparticles (LNPs) were made without surfactants (52.9 ± 0.2 nm, − 54.9 ± 0.5 mV). Both samples were applied as antifungal seed treatments on soybeans, and their impact on germination and plant health was assessed. Treated seeds showed high germination rates (> 90% for all treatment groups), similar to the control group (100%). Root and stem lengths and the dry biomass of treated seeds were not statistically distinguishable from the control. Foliage from seed-treated plants was fed to larvae of Chrysodeixis includens with no differences in mortality between treatments. No translocation of fluorescently tagged particles was observed with fluorescence microscopy following seed treatment and germination. Nano-delivered azoxystrobin provided ~ 100% protection when LNPs were used. Results suggest ZNPs and LNPs are safe and effective delivery systems of active compounds for seed treatments.

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Section: Introductionmentioning

confidence: 99%

Zein and lignin-based nanoparticles as soybean seed treatment: translocation and impact on seed and plant health

et al. 2022

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“…The nanoformulation of atrazine (nanoatrazine), produced by the nanoencapsulation of the active ingredient using the polymer poly(epsilon-caprolactone) (PCL), showed a reduction in the negative effects of the herbicide on non-target species and better weed control than a commercial, non-nano atrazine formulation, thus providing agronomic benefits (Grillo et al, 2012;Pereira et al, 2014;Oliveira et al, 2015;Sousa et al, 2018Sousa et al, , 2020Preisler et al, 2020;Zhai et al, 2020;Takeshita et al, 2021). In post-emergence, the higher efficiency of nanoatrazine has been related to improved uptake and distribution of the herbicide in the leaves, as nanoencapsulation provided a better interaction with plant tissues, allowing uptake by the stomatal pathway and greater mobility in vascular tissues (Bombo et al, 2019;Takeshita et al, 2021). Due to the rapid action of nanoatrazine, it is necessary to utilize sensors that monitor the herbicidal activity before the appearance of macroscopic symptoms.…”

Section: Introductionmentioning

confidence: 99%

“…ha À1 (Oliveira et al, 2015;Sousa et al, 2018). In Digitaria insularis (L.) Fedde, an atrazine tolerant species, and Raphanus raphanistrum L., a susceptible species, the application of nanoatrazine resulted in values for the inhibition of PSII activity up to 50% and 70% higher than the inhibition induced by commercial atrazine, respectively (Sousa et al, 2020;Takeshita et al, 2021). The post-emergence control of these two weed species was similar between 1000 g a. i. of nanoatrazine and 2000 g a. i. of commercial atrazine.…”

Section: Introductionmentioning

confidence: 99%

Post-emergence herbicidal activity of nanoatrazine against Alternanthera tenella Colla plants compared to other weed species

Sousa

Pereira

Fraceto

et al. 2022

Heliyon

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“…Moreover, Oliveira et al demonstrated that the postemergence herbicidal activity of NPATZ was 10 times more effective than ATZ and the nanoformulation lowered the required dosages of atrazine . Recently, Takeshita et al showed that NPATZ provided 2-fold higher weed control in the field compared to commercial atrazine . In this study, if we compared the impact of the NPATZ (the same used in Oliveira et al) on lettuce plants at the lowest concentration (NPATZ-L) with the conventional form in its highest concentration (ATZ-H), a clear reduction in their toxicity effects was observed since the formulation will be diluted 10 times.…”

Section: Discussionmentioning

confidence: 92%

“…15 Recently, Takeshita et al showed that NPATZ provided 2-fold higher weed control in the field compared to commercial atrazine. 51 In this study, if we compared the impact of the NPATZ (the same used in Oliveira et al 32 ) on lettuce plants at the lowest concentration (NPATZ-L) with the conventional form in its highest concentration (ATZ-H), a clear reduction in their toxicity effects was observed since the formulation will be diluted 10 times. Therefore, herbicidal efficiency should also be linked to study the impact of the nanopesticides, and not just compare nanopesticides with its conventional form at the same concentration.…”

Section: ■ Associated Contentmentioning

confidence: 99%

The Differences between the Effects of a Nanoformulation and a Conventional Form of Atrazine to Lettuce: Physiological Responses, Defense Mechanisms, and Nutrient Displacement

Zhai

Monikh

et al. 2021

J. Agric. Food Chem.

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The rapid development of nanotechnology influences the developments within the agro-sector. An example is provided by the production of nanoenabled pesticides with the intention to optimize the efficiency of the pesticides. At the same time, it is important to collect information on the unintended and unwanted adverse effects of emerging nanopesticides on nontarget plants. Currently, this information is limited. In the present study, we compared the effects of a nanoformulation of atrazine (NPATZ) and the nonencapsulated atrazine formulation (ATZ) on physiological responses, defense mechanisms, and nutrient displacement in lettuce over time with the applied concentrations ranging from 0.3 to 3 mg atrazine per kg soil. Our results revealed that both NPATZ and ATZ induced significant decreases in plant biomass, chlorophyll content, and protein content. Additionally, exposure to NPATZ and ATZ caused oxidative stress to the lettuce plant and significantly elevated the activities of the tested ROS scavenger enzymes in plant tissues. These results indicate that NPATZ and ATZ cause distinct adverse impacts on lettuce plants. When comparing the adverse effects in plants after exposure to NPATZ and ATZ, no obvious differences in plant biomass and chlorophyll content were observed between NPATZ and ATZ treatments at the same exposure concentration regardless of exposure duration. An enhanced efficiency of the active ingredient of the nanopesticide as compared to the conventional formulation was observed after long-term exposure to the high concentration of NPATZ, as it induced higher impacts on plants in terms of the end points of the contents of protein, superoxide anion (O2̇–), and MDA, and the activities of stress-related enzymes as compared to the same concentration of ATZ. Furthermore, exposure to both NPATZ and ATZ disrupted the uptake of mineral nutrients in plants, and the differences in the displacement of nutrients between the NPATZ and ATZ treatments depended on the element type, plant organ, exposure concentration, and time. Overall, the application dose of a nanopesticide should balance their increased herbicidal efficiency with the long-term adverse effects in order to maximize the desired impact while minimizing adverse impacts; only then will we be able to understand the potential impact of nanopesticides on the environment.

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Foliar absorption and field herbicidal studies of atrazine-loaded polymeric nanoparticles

Cited by 44 publications

References 60 publications

Zein and lignin-based nanoparticles as soybean seed treatment: translocation and impact on seed and plant health

Zein and lignin-based nanoparticles as soybean seed treatment: translocation and impact on seed and plant health

Post-emergence herbicidal activity of nanoatrazine against Alternanthera tenella Colla plants compared to other weed species

The Differences between the Effects of a Nanoformulation and a Conventional Form of Atrazine to Lettuce: Physiological Responses, Defense Mechanisms, and Nutrient Displacement

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