Assessment of mycogenic zinc nano-fungicides against pathogenic early blight (Alternaria solani) of potato (Solanum tuberosum L.)

The present study is carried out to establish the biofortification of zinc in potato (Solanum tuberosum L.) and tomato (Solanum lycopersicum L.) plants through the application of zinc oxide nanoparticles (ZnONPs). The mycogenic ZnONPs are synthesized by using Aspergillus flavus biomass and characterized to ascertain the size, shape, and concentration of synthesized nanoparticles. The ZnONPs are applied by foliar spray to the field-grown potato and tomato crops and the biofortification level is recorded by Atomic Absorption Spectroscopy (AAS). A nanotoxicity assessment is done by comparing the amount of cell death and accumulation of reactive oxygen species (ROS) in control and ZnONPs treated plants. The AAS analysis reveals significant accumulation of the zinc in leaves of potato plants but insignificant accumulation is observed in the tubers. However, a significant accumulation of zinc is observed in the leaves and fruits of the tomato plants (p ≤ 0.05). The nanotoxicity evaluation studies show comparable and statistically insignificant toxicity in control plants as compared to plants treated with ZnONPs. The study concludes that biofortification through the means of ZnONPs is a cost-effective and eco-friendly approach that can be used as an alternative to the hazardous chemical zinc fertilizers.

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“…(2021) performed the synthesis of ZnONPs by using A. niger . [ 27 ] Ghareib et al. (2019) reported the synthesis of ZnONPs by A. carneus .…”

Section: Resultsmentioning

confidence: 99%

“…[ 18–20 ] Green Nanoparticle (NP) synthesis is an eco‐friendly and cost‐effective approach as compared to physical and chemical methods and can be represented by extracts of plants [ 21–23 ] and microorganisms including bacteria, algae, and fungi. [ 24–30 ]…”

Section: Introductionmentioning

confidence: 99%

Nano‐Biofortification of Zinc in Potato (Solanum tuberosum L.) and Tomato (Solanum lycopersicum L.) Crops

Singh

Shukla

Gaurav

et al. 2023

Macromolecular Symposia

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“…Metal nanoparticles are wildly used for biocontrol of A. solani causing early blight disease such as zinc, selenium, silver, copper nanoparticles [ 67 , 68 , 69 , 70 ]. In this study silica nanoparticles were used for biocontrol of A. solani causing early blight disease.…”

Section: Resultsmentioning

confidence: 99%

Mycosynthesis of Silica Nanoparticles Using Aspergillus niger: Control of Alternaria solani Causing Early Blight Disease, Induction of Innate Immunity and Reducing of Oxidative Stress in Eggplant

et al. 2022

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The threats to the life and production of crops are exacerbated by climate change and the misuse of chemical pesticides. This study was designed to evaluate the effectiveness of biosynthesized silica nanoparticles (SiO2-NPs) as an alternative to pesticides against early blight disease of eggplant. Antifungal activity, disease index, photosynthetic pigments, osmolytes, oxidative stress, antioxidant enzymes activities were tested for potential tolerance of eggplant infected with Alternaria solani. Silica nanoparticles were successfully biosynthesized using Aspergillus niger through green and ecofriendly method. Results revealed that SiO2-NPs exhibited promising antifungal activity against A. solani where MIC was 62.5 µg/mL, and inhibition growth at concentration 1000 µg/mL recorded 87.8%. The disease Index (DI) as a result of infection with A. solani reached 82.5%, and as a result, a severe decrease in stem and root length and number of leaves occurred, which led to a sharp decrease in the photosynthetic pigments. However, contents of free proline, total phenol and antioxidant enzymes activity were increased in infected plants. On the other hand, the treatment with SiO2-NPs 100 ppm led to a great reduction in the disease Index (DI) by 25% and a high protection rate by 69.69%. A clear improvement in growth characteristics and a high content of chlorophyll and total carotenoids was also observed in the plants as a result of treatment with silica nanoparticles in (healthy and infected) plants. Interestingly, the noticeable rise in the content of infected and healthy plants of proline and phenols and an increase in the activity of super oxide dismutase (SOD) and polyphenol oxidase (PPO). It could be suggested that foliar application of SiO2-NPs especially 100 ppm could be commercially used as antifungal and strong inducer of plant physiological immunity against early blight disease.

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“…[1,2] Antibacterial materials with superior antibacterial properties, less polluting, and harmless to human body [3,4] are getting more and more increasing attention. Therefore, compound antibacterial agent [5,6] such as nano-inorganic fungicides [7] (e.g., silver and zinc ions), hydrophilic particles [8] DOI: 10.1002/star.202200200 (e.g., titanium dioxide), and graphite-based nanomaterials [9] have been extensively studied for the composite antibacterial materials. Against this background, the application of antibacterial emulsion for antibacterial materials have been increased due to its excellent dispersion, stable performance, and pollution-free, which obtains by modifying emulsion with antibacterial agent.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Cationic Starch Compound Emulsion by Graft Copolymerization with Tea Polyphenols and AEM5700

Wang

Liu

et al. 2024

Starch Stärke

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An antibacterial biobased compound emulsion was prepared by modifying cationic oxidized starch grafted styrene‐acrylic emulsion with 3 – (trimethoxysilyl) – propyldimethyloctadecyl ammonium chloride (AEM5700) and tea polyphenols. The biobased compound emulsion exhibited better stability, chemical properties and antibacterial properties. The structure and surface morphology of biobased compound emulsion were characterized by Fourier Transform infrared spectroscopy (FTIR) and Transmission electron microscopy (TEM). The thermal stability of biobased compound emulsion was improved, which can be concluded from the thermogravimetric analysis (TGA). The surface morphology of film was observed by the atomic force microscope (AFM). The wetting property of emulsion film was tested by contact angle test. When the compound ratio was 1.5, the biobased antibacterial compound emulsion had better stability and antibacterial properties. Compared to a single antibacterial agent, the inhibition zone increased by 4–5.5 mm. In addition, the polymerization mechanism of the biobased antibacterial emulsion was analyzed.This article is protected by copyright. All rights reserved

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Assessment of mycogenic zinc nano-fungicides against pathogenic early blight (Alternaria solani) of potato (Solanum tuberosum L.)

Cited by 19 publications

References 54 publications

Nano‐Biofortification of Zinc in Potato (Solanum tuberosum L.) and Tomato (Solanum lycopersicum L.) Crops

Nano‐Biofortification of Zinc in Potato (Solanum tuberosum L.) and Tomato (Solanum lycopersicum L.) Crops

Mycosynthesis of Silica Nanoparticles Using Aspergillus niger: Control of Alternaria solani Causing Early Blight Disease, Induction of Innate Immunity and Reducing of Oxidative Stress in Eggplant

Synthesis of Cationic Starch Compound Emulsion by Graft Copolymerization with Tea Polyphenols and AEM5700

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