Coated Cu-doped ZnO and Cu nanoparticles as control agents against plant pathogenic fungi and nematodes

Tryfon, Panagiota; Kamou, Nathalie N.; Ntalli, Nikoletta; Mourdikoudis, Stefanos; Karamanoli, Katerina; Karfaridis, Dimitrios; Menkissoglu‐Spiroudi, Urania; Dendrinou‐Samara, Catherine

doi:10.1016/j.impact.2022.100430

Cited by 16 publications

(7 citation statements)

References 69 publications

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“…The substantial reduction in linear growth with increasing concentrations of Fe 3 O 4 NPs suggests a potential mechanism of action, possibly involving interference with fungal cell membranes or vital cellular processes, as discussed by Rawat et al [45]. The Cu NPs and ZnO NPs also exhibited dose-dependent inhibitory effects, consistent with studies on their antifungal activities against various pathogens [46]. The high reduction percentages at 100 µg/L indicate their potential as effective agents against S. cepivorum, which aligns with Derbalah et al [47].…”

Section: Discussionsupporting

confidence: 73%

Nanoparticles and Chemical Inducers: A Sustainable Shield against Onion White Rot

Elenany,

Atia,

Abbas

et al. 2024

Biology

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This study investigated the effectiveness of nanoparticles and chemical inducers in managing onion white rot caused by Sclerotium cepivorum. The pathogen severely threatens onion cultivation, resulting in significant yield losses and economic setbacks. Traditional fungicides, though effective, raise environmental concerns, prompting a shift toward eco-friendly alternatives. In this study, four S. cepivorum isolates were utilized, each exhibiting varying degrees of pathogenicity, with the third isolate from Abu-Hamad demonstrating the highest potency. During the in vitro studies, three nanoparticles (NPs) were investigated, including Fe3O4 NPs, Cu NPs, and ZnO NPs, which demonstrated the potential to inhibit mycelial growth, with salicylic acid and Fe3O4 NPs exhibiting synergistic effects. In vivo, these nanoparticles reduced the disease incidence and severity, with Fe3O4 NPs at 1000–1400 ppm resulting in 65.0–80.0% incidence and 80.0–90.0% severity. ZnO NPs had the most positive impact on the chlorophyll content, while Cu NPs had minimal effects. At 1000 ppm, Fe3O4 NPs had variable effects on the phenolic compounds (total: 6.28, free: 4.81, related: 2.59), while ZnO NPs caused minor fluctuations (total: 3.60, free: 1.82, related: 1.73). For the chemical inducers, salicylic acid reduced the disease (10.0% incidence, 25.0% to 10.0% severity) and promoted growth, and it elevated the chlorophyll values and enhanced the phenolic compounds in infected onions. Potassium phosphate dibasic (PDP) had mixed effects, and ascorbic acid showed limited efficacy toward disease reduction. However, PDP at 1400 ppm and ascorbic acid at 1000 ppm elevated the chlorophyll values and enhanced the phenolic compounds. Furthermore, this study extended to traditional fungicides, highlighting their inhibitory effects on S. cepivorum. This research provides a comprehensive comparative analysis of these approaches, emphasizing their potential in eco-friendly onion white rot management.

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Section: Discussionsupporting

confidence: 73%

Nanoparticles and Chemical Inducers: A Sustainable Shield against Onion White Rot

Elenany,

Atia,

Abbas

et al. 2024

Biology

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“…Chitosan-silver doped titanium dioxide NCs (Cs-AgTiO 2 ) showed excellent nematicidal potential against Caenorhabditis elegans [100]. Tryfon et al [101] demonstrated Cu-doped ZnO NPs as a promising tool to control M. javanica on lettuce plants by reducing galling and population and increasing antioxidant capacity and phenolic compounds.…”

Section: Nanocomposites and Their Mode Of Action Against Phytopathoge...mentioning

confidence: 99%

Nanocomposites in agriculture as pesticides for plant protection: a review

Saberi Riseh,

Vatankhah,

Hassanisaadi

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Plant pests pose a significant threat to agricultural crops, requiring the use of pesticides for effective and large-scale production. With increasing concerns about environmental and health risks, as well as potential resistance to synthetic pesticides, there is a growing need for sustainable and effective alternatives. Nanocomposites (NCs) offer a promising solution due to their unique properties such as biodegradability, affordability and accessibility. The development of novel NCs improves the management of plant pests, mitigating the emergence of resistant and persistent pests and the loss of crop production due to the damage they cause. This paper presents a comprehensive review of the relevant literature in this field, focusing on the applications and modes of action of NC-based pesticides in agriculture. By synthesising the available information, this paper provides valuable insights into the value and potential of NCs in crop protection. The results of this review are intended to inform researchers and agricultural practitioners about the opportunities and challenges associated with the use of NC-based pesticides, ultimately facilitating the development of sustainable and efficient crop pest management strategies.

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Section: Advanced Inorganic-based Nanostructuresmentioning

confidence: 99%

“…Cu-doped ZnO NPs revealed a growth inhibition of fungi Botrytis cinerea and Sclerotinia sclerotiorum and nematode paralysis of Meloidogyne javanica in a dose-dependent manner [ 139 ]. Cu-doped ZnO were more effective against M. javanica (EC 50 = 2.60 μg/mL) than the pegylated Cu NPs; the antifungal activity was approximately similar for both NPs, with EC 50 values at 310 and 327 μg/mL against B. cinerea , respectively, and 260 and 278 μg/mL against S. sclerotiorum , respectively [ 139 ]. The treatment of lettuce plants with Cu-doped ZnO NPs increased the leaf net photosynthetic value at 4.60 and 6.66 μmol CO 2 −2 s −1 in plants inoculated with S. sclerotiorum and M. javanica , respectively [ 139 ].…”

Section: Advanced Inorganic-based Nanostructuresmentioning

confidence: 99%

Fighting Phytopathogens with Engineered Inorganic-Based Nanoparticles

Kanakari

Dendrinou‐Samara

2023

Materials

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The development of effective and ecofriendly agrochemicals, including bactericides, fungicides, insecticides, and nematicides, to control pests and prevent plant diseases remains a key challenge. Nanotechnology has provided opportunities for the use of nanomaterials as components in the development of anti-phytopathogenic agents. Indeed, inorganic-based nanoparticles (INPs) are among the promising ones. They may play an effective role in targeting and killing microbes via diverse mechanisms, such as deposition on the microbe surface, destabilization of cell walls and membranes by released metal ions, and the induction of a toxic mechanism mediated by the production of reactive oxygen species. Considering the lack of new agrochemicals with novel mechanisms of action, it is of particular interest to determine and precisely depict which types of INPs are able to induce antimicrobial activity with no phytotoxicity effects, and which microbe species are affected. Therefore, this review aims to provide an update on the latest advances in research focusing on the study of several types of engineered INPs, that are well characterized (size, shape, composition, and surface features) and show promising reactivity against assorted species (bacteria, fungus, virus). Since effective strategies for plant protection and plant disease management are urgently needed, INPs can be an excellent alternative to chemical agrochemical agents as indicated by the present studies.

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Coated Cu-doped ZnO and Cu nanoparticles as control agents against plant pathogenic fungi and nematodes

Cited by 16 publications

References 69 publications

Nanoparticles and Chemical Inducers: A Sustainable Shield against Onion White Rot

Nanoparticles and Chemical Inducers: A Sustainable Shield against Onion White Rot

Nanocomposites in agriculture as pesticides for plant protection: a review

Fighting Phytopathogens with Engineered Inorganic-Based Nanoparticles

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