Investigations on the Systemic Acquired Resistance Induced by Acibenzolar-S-Methyl in Tomato Plants Against Pseudomonas syringae pv. tomato

Buonaurio, Roberto; Moretti, Chiaraluce; Bertona, A.; Scarponi, Luciano

doi:10.1007/978-94-017-0133-4_52

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…For example, organic control, resistant varieties, crop rotation, and soil solarization [8]. Cu-based biocides are considered the most effective compounds against Fusarium diseases like wilt and root rot [9]. However, the long term use of these compounds has induced undesirable pathogen resistance [10].…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide Nanosheet-Decorated Copper Oxide Nanoparticles: A Potent Antifungal Nanocomposite against Fusarium Root Rot and Wilt Diseases of Tomato and Pepper Plants

et al. 2020

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Sustainable use of nanotechnology in crop protection requires an understanding of the plant’s life cycle, potential toxicological impacts of nanomaterials and their mechanism of action against the target pathogens. Herein, we show some properties of a candidate antifungal nanocomposite made from copper oxide (CuO; otherwise an essential soil nutrient) nanoparticles (NPs), with definite size and shape, decorating the surface of reduced graphene oxide (rGO) nanosheets. The successful preparation of the rGO-CuO NPs was confirmed by spectroscopic and microscopic analyses, and its antifungal activity against wild strains of Fusarium oxysporum affecting tomato and pepper plants was successfully confirmed. A comparative analysis in vitro indicated that this nanocomposite had higher antifungal activity at only 1 mg/L than the conventional fungicide Kocide 2000 at 2.5 g/L. Further investigation suggested that rGO-CuO NPs creates pits and pores on the fungal cell membranes inducing cell death. In planta results indicated that only 1 mg/L from the nanocomposite is required to reduce Fusarium wilt and root rot diseases severity below 5% for tomato and pepper plants without any phytotoxicity for about 70 days. Comparatively, 2.5 g/L of Kocide 2000 are required to achieve about 30% disease reduction in both plants. The present study contributes to the concept of agro-nanotechnology, showing the properties of a novel ecofriendly and economic nanopesticide for sustainable plant protection.

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Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide Nanosheet-Decorated Copper Oxide Nanoparticles: A Potent Antifungal Nanocomposite against Fusarium Root Rot and Wilt Diseases of Tomato and Pepper Plants

et al. 2020

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“…Certain plant fungal diseases, such as Fusarium wilt, are effectively managed with copper-based biocides. [8]. However, the development of resistance in disease-causing organisms due to prolonged exposure to these substances is never a good thing.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-Loaded Copper Oxide Nanoparticles: A Promising Antifungal Nanocomposite against Fusarium Wilt Disease of Tomato Plants

Mosa,

El-Abeid

2023

Sustainability

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The extensive use of agrochemicals for crop protection is increasing their environmental risks. Due to the incredible antimicrobial potential of nanomaterials, research into their potential use in sustainable agriculture as alternatives to chemical fungicides is advancing rapidly. In this study, we evaluated the possible antifungal properties of copper oxide nanocomposite (CH@CuO NPs) coated with chitosan in order to fend off Fusarium wilt diseases in tomato plants caused by F. oxysporum f. sp. lycopersici (FOL) throughout in vitro and in vivo experiments. Here, we demonstrate some of the characteristics of a potential antifungal nanocomposite composed of copper oxide nanoparticles (CuO NPs), firmly immobilized on chitosan nanoparticle (CH) surfaces as dark spots, with an irregular shape and 54.22 nm in size, as indicated by Transmission electron microscope (TEM) analysis. Spectroscopic and microscopic investigations, as well as its antifungal efficacy, verified that the successful synthesis of the CH@CuO NPs at three different concentrations (1, 25, and 50) mg/L against three different wild isolates of the pathogenic Fusarium oxysporum that infect tomatoes was successfully proven to be effective. In vitro comparisons revealed that CH@CuO NPs showed stronger antifungal activity at only 1 mg/L (96.22 ± 1.35) than the classical chemical fungicide “Kocide 2000” at conc. 2.5 g/L (77.34 ± 0.33), for example, in the case of FOL1 isolate. In accordance with the in vivo data, tomato plants can be treated with only 1 mg/L of CH@CuO NPs for up to 75 days, by which time Fusarium wilt disease severity is reduced by 91.5% In contrast, 2.5 g/L of Kocide 2000 is required to reduce disease in tomato plants by about 90%. This research expands our understanding of agro-nanotechnology by outlining the characteristics of a unique, environmentally friendly, and economically viable nanopesticide for long-term plant protection.

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Investigations on the Systemic Acquired Resistance Induced by Acibenzolar-S-Methyl in Tomato Plants Against Pseudomonas syringae pv. tomato

Cited by 2 publications

References 16 publications

Reduced Graphene Oxide Nanosheet-Decorated Copper Oxide Nanoparticles: A Potent Antifungal Nanocomposite against Fusarium Root Rot and Wilt Diseases of Tomato and Pepper Plants

Reduced Graphene Oxide Nanosheet-Decorated Copper Oxide Nanoparticles: A Potent Antifungal Nanocomposite against Fusarium Root Rot and Wilt Diseases of Tomato and Pepper Plants

Chitosan-Loaded Copper Oxide Nanoparticles: A Promising Antifungal Nanocomposite against Fusarium Wilt Disease of Tomato Plants

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