Physiological response of culture media-grown barley (<i>Hordeum vulgare</i> L.) to titanium oxide nanoparticles

Kořenková, Lucia; Šebesta, Martin; Urík, Martin; Kolenčík, Marek; Kratošová, Gabriela; Bujdoš, Marek; Vávra, I.; Dobročka, Edmund

doi:10.1080/09064710.2016.1267255

Cited by 21 publications

(10 citation statements)

References 20 publications

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“…Translocation to roots may occur via phloem transport together with the products of photosynthesis [11]. In roots, NMs can also be internalized with water and nutrients in soil or hydroponic media, with uptake being highly modulated by external factors including the growth medium [12], pH [13,14], cation exchange capacity [15], root exudates [16,17], and mycorrhizal fungi [18,19]. In the event of uptake, translocation to leaves may be restricted by the Casparian strip, necessitating symplastic transport through cellular plasmodesmata to reach the xylem and phloem [4].…”

Section: Nm Interactions With Plantsmentioning

confidence: 99%

Nanomaterials in Plants: A Review of Hazard and Applications in the Agri-Food Sector

Kranjc

Drobne

2019

Nanomaterials

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Agricultural food crop plants interact with engineered nanomaterials (ENMs) from the application of agri-food nanotechnologies and from unintentional emissions originating from other nanotechnologies. Both types of exposure present implications for agricultural yield and quality, food chain transfer, and environmental and human health. In this review, the most recent findings from agricultural plant-ENM studies published in 2017 and 2018 are summarized. The aim of this is to identify the current hazard potential of ENMs for plants grown under typical field conditions that originate from both intentional and unintentional exposures and to contribute to knowledge-based decisions on the application of ENMs in food-agriculture. We also address recent knowledge on ENM adsorption, internalization, translocation, and bioaccumulation by plants, ENM impacts on agricultural crop yield and nutrition, and ENM biotransformation. Using adverse effect level concentrations and data on ENM accumulation in environmental matrices, the literature analyses revealed that C-, Ag-, Ce-, and Ti-based ENMs are unlikely to pose a risk to plants grown under typical field conditions, whereas Cu- and Zn-based ENMs require surveillance. Since multiple factors (e.g., ENM concentration, route of exposure, and plant type) influence the effects of ENMs on plants, biomonitoring is recommended for tracking ENM environmental exposure in the future.

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Section: Nm Interactions With Plantsmentioning

confidence: 99%

Nanomaterials in Plants: A Review of Hazard and Applications in the Agri-Food Sector

Kranjc

Drobne

2019

Nanomaterials

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“…Most referenced papers on the interaction of plants and nanoparticles are laboratory or green-house studies, and they mainly target early plant growth development under regulated conditions [ 11 , 17 , 49 , 50 ]. Consequently, there are only rare long-term field studies on NPs ability to accumulate elements required for best fruit quality.…”

Section: Introductionmentioning

confidence: 99%

Foliar Application of Low Concentrations of Titanium Dioxide and Zinc Oxide Nanoparticles to the Common Sunflower under Field Conditions

et al. 2020

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Nano-fertilisers have only recently been introduced to intensify plant production, and there still remains inadequate scientific knowledge on their plant-related effects. This paper therefore compares the effects of two nano-fertilisers on common sunflower production under field conditions. The benefits arising from the foliar application of micronutrient-based zinc oxide fertiliser were compared with those from the titanium dioxide plant-growth enhancer. Both the zinc oxide (ZnO) and titanium dioxide (TiO2) were delivered by foliar application in nano-size at a concentration of 2.6 mg·L−1. The foliar-applied nanoparticles (NPs) had good crystallinity and a mean size distribution under 30 nm. There were significant differences between these two experimental treatments in the leaf surfaces’ trichomes diversity, ratio, width, and length at the flower-bud development stage. Somewhat surprisingly, our results established that the ZnO-NPs treatment induced generally better sunflower physiological responses, while the TiO2-NPs primarily affected quantitative and nutritional parameters such as oil content and changed sunflower physiology to early maturation. There were no differences detected in titanium or zinc translocation or accumulation in the fully ripe sunflower seeds compared to the experimental controls, and our positive results therefore encourage further nano-fertiliser research.

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“…Several studies have shown a positive impact of nTiO 2 on many aspects of plant growth [1] [14] [15] [16] [17]. However, some studies show either negative effects [18] [19] [20] or no effects [14] [21] [22] [23] of nTiO 2 in many crop species. Thus, there is no clear understanding of the factors that may contribute to the differential responses to nTiO 2 in crop plants including lettuce.…”

Section: Introductionmentioning

confidence: 99%

Effect of Titanium Dioxide Nanoparticles on Growth and Biomass Accumulation in Lettuce (<i>Lactuca sativa</i>)

Rajashekar,

Armstrong

2024

AJPS

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The use of titanium dioxide nanoparticles (nTiO 2 ) is gaining interest in agriculture because of their impact on many aspects of plant growth. The present study examines the effects of nTiO 2 (5 nm and 10 nm) applied to seeds and the seedlings as a foliar application on various aspects of growth characteristics and biomass accumulation in lettuce (Lactuca sativa, cv. Grand Rapids).Application of 10 nm nTiO 2 to seeds through imbibition resulted in a significant reduction in shoot biomass accumulation while 5 nm nTiO 2 did not affect the biomass accumulation in lettuce. The application of 10 nm nTiO 2 reduced the fresh shoot biomass accumulation by about 18% compared to the control plants. Other growth characteristics such as shoot dry biomass, root fresh and dry biomass, plant height, and leaf area were not affected by the application of both 5 nm and 10 nm nTiO 2 . In addition, foliar application of these nanoparticles to the lettuce seedlings did not have a significant effect on most of the growth parameters examined, and the increasing concentration ranging from 5 nm/L to 400 mg/L did not produce a consistent response in lettuce. Thus, nTiO 2 application to lettuce seeds had a notable negative impact on shoot growth while foliar application did not have a significant effect on many plant growth characteristics. However, foliar applications produced some symptoms of toxicity to the foliage in the form of necrotic or chlorotic patches on the leaves, which were more pronounced with increasing concentrations of both 5 nm and 10 nm nTiO 2 . However, these symptoms were apparent at a concentration as low as 50 mg/L of nTiO 2 . Thus, foliar application of nTiO 2 may not have a significant impact on many of the growth characteristics in lettuce, but it can result in foliar toxicity.

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Physiological response of culture media-grown barley (Hordeum vulgare L.) to titanium oxide nanoparticles

Cited by 21 publications

References 20 publications

Nanomaterials in Plants: A Review of Hazard and Applications in the Agri-Food Sector

Nanomaterials in Plants: A Review of Hazard and Applications in the Agri-Food Sector

Foliar Application of Low Concentrations of Titanium Dioxide and Zinc Oxide Nanoparticles to the Common Sunflower under Field Conditions

Effect of Titanium Dioxide Nanoparticles on Growth and Biomass Accumulation in Lettuce (<i>Lactuca sativa</i>)

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Physiological response of culture media-grown barley (Hordeum vulgare L.) to titanium oxide nanoparticles

Cited by 21 publications

References 20 publications

Nanomaterials in Plants: A Review of Hazard and Applications in the Agri-Food Sector

Nanomaterials in Plants: A Review of Hazard and Applications in the Agri-Food Sector

Foliar Application of Low Concentrations of Titanium Dioxide and Zinc Oxide Nanoparticles to the Common Sunflower under Field Conditions

Effect of Titanium Dioxide Nanoparticles on Growth and Biomass Accumulation in Lettuce (&lt;i&gt;Lactuca sativa&lt;/i&gt;)

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Effect of Titanium Dioxide Nanoparticles on Growth and Biomass Accumulation in Lettuce (<i>Lactuca sativa</i>)