Responses of Plants to Iron Oxide Nanoparticles

Rehman, Muhammad Zia ur; Akhtar, Naeem; Khalid, Hinnan; Rizwan, Muhammad; Ali, Shafaqat; Azhar, Muhammad Tehseen

doi:10.1016/b978-0-12-811487-2.00010-4

Cited by 34 publications

(28 citation statements)

References 120 publications

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“…Nanoparticles exhibit a broad range of physicochemical properties that greatly contrast their bulk analogs. Nanoparticles in the size range of 1-100 nm display unique and novel properties (Jeevanandam et al, 2018;Zia-ur-Rehman et al, 2018;Teulon et al, 2019). Nanoscale materials exhibit their unique properties due to their high surface energy, large proportion of surface atoms, low level of imperfection, and spatial confinement (Bai et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Anti-biofilm and Antibacterial Activities of Silver Nanoparticles Synthesized by the Reducing Activity of Phytoconstituents Present in the Indian Medicinal Plants

et al. 2020

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Biofilm forming from a variety of microbial pathogens can pose a serious health hazard that is difficult to combat. Nanotechnology, however, represents a new approach to fighting and eradicating biofilm-forming microorganisms. In the present study, the sustainable synthesis and characterization of biocompatible silver nanoparticles (AgNPs) from leaf extracts of Semecarpus anacardium, Glochidion lanceolarium, and Bridelia retusa was explored. Continuous synthesis was observed in a UV-vis spectroscopic analysis and the participating phytoconstituents, flavonoids, phenolic compounds, phytosterols, and glycosides, were characterized by Attenuated total reflectance-Fourier transform infrared spectroscopy. The size and surface charge of the particles were also measured by dynamic light scattering spectroscopy. Scanning electron microscopy study was employed to examine the morphology of the nanoparticles. The spectroscopic and microscopic study confirmed the successful synthesis of AgNPs by plant extracts acting as strong reducing agents. The synthesized AgNPs were screened for antibacterial and anti-biofilm activity against human pathogens Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus. Results of the study demonstrate the potential of phyto-synthesized AgNPs to act as anti-biofilm agents and for other biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Anti-biofilm and Antibacterial Activities of Silver Nanoparticles Synthesized by the Reducing Activity of Phytoconstituents Present in the Indian Medicinal Plants

et al. 2020

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“…1A). However, the lower peroxide contents of the cells treated with the MNPs than the SMFs might be related to the supplementation of the plants with iron oxide NPs that stimulates the activity of antioxidant enzymes and scavenges reactive oxygen species (Zia-ur-Rehman et al 2018).…”

Section: Effect Of the Smfs And Mnps On The Antioxidant Defense Mechanismmentioning

confidence: 99%

“…The treatment of the plant cells with MNP supply the cells with excess iron nutrients (Zia-ur-Rehman 2018). As a consequence it could stimulate Fenton reaction and generates hydrogen peroxide, hydroxyl radicals, and the superoxide anion.…”

Section: Effect Of the Smfs And Mnps On The Antioxidant Defense Mechanismmentioning

confidence: 99%

Modification of phytochemical production and antioxidant activity of Dracocephalum kotschyi cells by exposure to static magnetic field and magnetite nanoparticles

Taghizadeh

Nasibi

Kalantari

et al. 2021

Plant Cell Tiss Organ Cult

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Dracocephlum kotschyi Boiss is a genus in Lamiaceae family and a medicinal herb native to Iran. The cell suspension cultures were treated by static magnetic eld (SMF) and Fe 3 O 4 magnetite nanoparticles (MNP) to understand the production yield of secondary metabolites. The treatment procedure was done by cultivating the cells either with 100 ppm MNP, SMFs, or simultaneous exposure to both MNP and SMFs. The SMF at 30 mT was uniformly applied to the cells either for 3 or 4 days with a 3 h per day or a 5 h per day intervals, respectively. The contents of phenolics and phytochemicals were then examined by high performance liquid chromatography and UV-Vis spectrophotometer. These treatments imposed oxidative stress and induced polyphenol oxidase and phenylalanine ammonia lyase, accompanied by enhanced production of phenolics, anthocyanins, avonoids, and lignin. The highest membrane embrittlement and elicitation was found upon simultaneous application of the MNPs and SMFs, followed by the MNP and SMFs. The contents of naringin, rosmarinic acid, quercetin, thymol, carvacrol, apigenin, and rutin increased in the intracellular biomass of all treated cells and extracellular culture media. These ndings propose the potential of these elicitors in simultaneous production and secretion of these phytochemicals into culture media.

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“…Drought stress resulting from anthropogenic climate alteration is a serious constraint on fruit production and distribution worldwide (Zia-ur-Rehman et al, 2018). Drought stress problems are most severe in arid and semiarid regions, and they reduce suitable land use (García-Tejero et al, 2012).…”

mentioning

confidence: 99%

Arbuscular Mycorrhiza and Plant Growth-promoting Bacteria Alleviate Drought Stress in Walnut

Behrooz¹,

Vahdati²,

Rejali³

et al. 2019

horts

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Additional index word. Azotobacter chroococcum, Glomus etunicatum, nutrient acquisition, peroxidase activity, proline, symbiotic bacteria Abstract. Drought stress is one of the main constraints limiting worldwide crop production. Arbuscular mycorrhizae (AM) and plant growth-promoting bacteria (PGPB) such as Azotobacter chroococcum and Azospirillium lipofrum have been shown to alleviate drought stress effects. Therefore, the interaction effect of AM fungi [Glomus mosseae, G. etunicatum, and a mix of these (G. mix), and PGPB bacteria (Azotobacter chroococcum + Azospirillium lipofrum)] was investigated in 1-year-old walnut seedlings (cv. Chandler) under normal and drought stress conditions. Drought stress reduced growth (plant height, root length, number of leaves, and fresh weight) and leaf nutrient content (N, P, and Zn) significantly of walnut plants. In contrast, proline, total soluble sugar, starch peroxidase enzyme activity, and total phenolic content of walnut leaves increased under this stress. Application of fungi or bacteria, and especially their simultaneous use, alleviated the negative effects of drought stress on walnut seedlings. AM fungi and PGPB increased significantly the content of some metabolites, including total phenolic content, proline level, peroxidase activity, total soluble sugar, and starch content as well as peroxidase enzyme activity. This led to an increase in walnut plant growth under the drought stress condition. Among AM fungi, G. etunicatum was more effective in reducing drought stress symptoms than either G. mosseae or the G. mix of fungi. In conclusion, use of G. etunicatum, along with PGPB, can reduce negative effects of drought stress on walnut seedlings.

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Responses of Plants to Iron Oxide Nanoparticles

Cited by 34 publications

References 120 publications

Anti-biofilm and Antibacterial Activities of Silver Nanoparticles Synthesized by the Reducing Activity of Phytoconstituents Present in the Indian Medicinal Plants

Anti-biofilm and Antibacterial Activities of Silver Nanoparticles Synthesized by the Reducing Activity of Phytoconstituents Present in the Indian Medicinal Plants

Modification of phytochemical production and antioxidant activity of Dracocephalum kotschyi cells by exposure to static magnetic field and magnetite nanoparticles

Arbuscular Mycorrhiza and Plant Growth-promoting Bacteria Alleviate Drought Stress in Walnut

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