Less is more: The hormetic effect of titanium dioxide nanoparticles on plants

Trela-Makowej, Agnieszka; Orzechowska, Aleksandra; Szymańska, Renata

doi:10.1016/j.scitotenv.2023.168669

Cited by 3 publications

(1 citation statement)

References 155 publications

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“…In current applications, Ti primarily takes the form of nanoparticles within plants. Nano-titanium dioxide (TiO 2 NPs) is extensively applied worldwide and acts as an antimicrobial agent, capable of triggering plant defense responses [ 88 ]. Numerous studies have revealed that the application of TiO 2 NPs improves plant defense abilities against various abiotic stresses.…”

Section: Metal(loid) Defense To Abiotic Stressmentioning

confidence: 99%

Advances in the Involvement of Metals and Metalloids in Plant Defense Response to External Stress

Zhang,

Liu,

Song

et al. 2024

Plants

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Plants, as sessile organisms, uptake nutrients from the soil. Throughout their whole life cycle, they confront various external biotic and abiotic threats, encompassing harmful element toxicity, pathogen infection, and herbivore attack, posing risks to plant growth and production. Plants have evolved multifaceted mechanisms to cope with exogenous stress. The element defense hypothesis (EDH) theory elucidates that plants employ elements within their tissues to withstand various natural enemies. Notably, essential and non-essential trace metals and metalloids have been identified as active participants in plant defense mechanisms, especially in nanoparticle form. In this review, we compiled and synthetized recent advancements and robust evidence regarding the involvement of trace metals and metalloids in plant element defense against external stresses that include biotic stressors (such as drought, salinity, and heavy metal toxicity) and abiotic environmental stressors (such as pathogen invasion and herbivore attack). We discuss the mechanisms underlying the metals and metalloids involved in plant defense enhancement from physiological, biochemical, and molecular perspectives. By consolidating this information, this review enhances our understanding of how metals and metalloids contribute to plant element defense. Drawing on the current advances in plant elemental defense, we propose an application prospect of metals and metalloids in agricultural products to solve current issues, including soil pollution and production, for the sustainable development of agriculture. Although the studies focused on plant elemental defense have advanced, the precise mechanism under the plant defense response still needs further investigation.

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Section: Metal(loid) Defense To Abiotic Stressmentioning

confidence: 99%

Advances in the Involvement of Metals and Metalloids in Plant Defense Response to External Stress

Zhang,

Liu,

Song

et al. 2024

Plants

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show abstract

The interaction between titanium dioxide nanoparticles and light can have dualistic effects on the physiological responses of plants

Orzechowska,

Szymańska,

Sarna

et al. 2024

Environ Sci Pollut Res

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Chitosan-Coated Fosetyl-Al Nanocrystals’ Efficacy on Nicotiana tabacum Colonized by Xylella fastidiosa

Tatulli,

Baldassarre,

Schiavi

et al. 2024

Phytopathology®

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Xylella fastidiosa (Xf) is a quarantine plant pathogen capable of colonizing the xylem of a wide range of hosts. Currently, there is no cure able to eliminate the pathogen from a diseased plant, whereas several integrated strategies have been implemented for containing the spread of Xf. Nanotechnology represents an innovative strategy based on the possibility of maximizing the potential antibacterial activity by increasing the surface-to-volume ratio of nanoscale formulations. Nanoparticles based on Chitosan and/or Fosetyl-Al have shown different in vitro antibacterial efficacy against Xf subspecies fastidiosa (Xff) and pauca (Xfp). This work demonstrated the uptake of Chitosan-Coated Fosetyl-Al nanocrystals (CH-nanoFos) by roots and their localization in the stems and leaves of olea europaea plants. Additionally, the antibacterial activity of Fosetyl-Al, nano-Fosetyl, nano-chitosan, and Chitosan-Coated Fosetyl-Al nanocrystals (CH-nanoFos) was tested on Nicotiana tabacum cv. SR1 (Petite Havana) inoculated with Xff, Xfp, or Xf subsp. multiplex (Xfm). The bacterial load was evaluated with qPCR, and the results showed that CH-nanoFos was the only treatment able of reducing the colonization of Xff, Xfm, and Xfp in tobacco plants. Additionally, the Area Under Disease Progress Curve (AUDPC), used to assess symptoms development in tobacco plants inoculated with Xff, Xfm, and Xfp and treated with CH-nanoFos, showed a reduction in symptom development. Furthermore, the twitching assay and bacterial growth under microfluidic conditions confirmed the antibacterial activity of CH-nanoFos.

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Less is more: The hormetic effect of titanium dioxide nanoparticles on plants

Cited by 3 publications

References 155 publications

Advances in the Involvement of Metals and Metalloids in Plant Defense Response to External Stress

Advances in the Involvement of Metals and Metalloids in Plant Defense Response to External Stress

The interaction between titanium dioxide nanoparticles and light can have dualistic effects on the physiological responses of plants

Chitosan-Coated Fosetyl-Al Nanocrystals’ Efficacy on Nicotiana tabacum Colonized by Xylella fastidiosa

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