Accumulation dynamics and some cytogenetical tests at Chelidonium majus and Papaver somniferum callus under the magnetic liquid effect

Pavel, Angela; Trifan, M; Bara, Ion; Creangă, Dorina; Cotae, C.

doi:10.1016/s0304-8853(99)00112-2

Cited by 21 publications

(7 citation statements)

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“…Many studies are focused on cellular responses such as seeds germination, proliferation and differentiation process, after exposure to iron oxide nanoparticles, showing both inhibitory and stimulatory effects [18,19]. Genotoxicity is one of the most disturbing effects induced by iron oxide nanoparticles on plants [20,21]. Nevertheless, reduced progress has been made in relation to understanding the impact of magnetic nanomaterials at the molecular level, which is an important step in estimating the possible mechanism of observed effects of nanoparticles on plants.…”

Section: Introductionmentioning

confidence: 99%

Impact of Magnetite Nanoparticles Coated with Aspartic Acid on the Growth, Antioxidant Enzymes Activity and Chlorophyll Content of Maize

Racuciu

Tecucianu²,

Oancea

2022

Antioxidants

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In recent decades, magnetite nanoparticles received greater attention in nanobiotechnology due to wide applications. This study presents the influence of the oxidative stress caused by magnetite nanoparticles coated with aspartic acid (A-MNP) of 9.17 nm mean diameter size, on maize (Zea mays) seedlings, in terms of growth, enzymatic activity and chlorophyll content as evaluated in exposed plant tissues. Diluted suspensions of colloidal magnetite nanoparticles stabilized in water were added to the culture medium of maize seeds, such as to equate nanoparticle concentrations varying from 0.55 mg/L to 11 mg/L. The obtained results showed that the growth of maize was stimulated by increasing the level of A-MNPs. Plant samples treated with different concentrations of A-MNP proved increased activities of catalase and peroxidase, and chlorophyll content, as well. The exposure of plants to magnetite nanoparticles may induce oxidative stress, which activates the plant defense/antioxidant mechanisms.

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Section: Introductionmentioning

confidence: 99%

Impact of Magnetite Nanoparticles Coated with Aspartic Acid on the Growth, Antioxidant Enzymes Activity and Chlorophyll Content of Maize

Racuciu

Tecucianu²,

Oancea

2022

Antioxidants

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“…6,7 Regarding the influence of magnetic fluids on the photosynthesis process, a small number of studies is dedicated, 4,[8][9][10] which revealed a stimulatory effect on the photo-assimilatory pigments content leading to stimulatory effects on the plants growth. This stimulatory effect may be explained on the basis of iron importance in the vegetal organisms.…”

Section: Introductionmentioning

confidence: 99%

Iron oxide nanoparticles coated with β-cyclodextrin polluted of Zea mays plantlets

Racuciu

2012

Nanotechnol Dev

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The present experimental investigation is focused on the study of assimilatory pigments and nucleic acid levels in young plants intended for agricultural use (Zea mays) in presence of water based magnetic fluid added in culture medium. The magnetic fluid was constituted by coating the nanosized magnetic nanoparticles (with 10.55 nm average value of the physical diameter) with β-cyclodextrin (C 42 H 70 O 35 ) and further dispersion in water. After germination, various volume fractions (between 10 mL/L and 500 mL/L) of the magnetic fluid was added daily in the culture medium of Zea mays plants still at their early ontogenetic stages. Toxicity symptoms leaded to brown spots covering the leaf surface for the highest magnetic fluid volume fractions used, a putative oxidative stress generated by iron excess treatment. Relatively small volume fraction of magnetic fluid solutions induced the increase of chlorophyll a level (up to 38%), the main photosynthesis pigment, as well that the nucleic acid level (up to 57%) in Zea mays plantlets. All volume fractions of magnetic fluid solutions analyzed may have severe disruptive effects such as the ratio chlorophyll a/chlorophyll b (about 50% decreasing).

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“…We may say that the utilization of magnetic stirring during ferrophase dispersion into the carrier fluid, whilst being more vigorous than the mechanical mixing, has still favored small particle agglomeration around the stirring bar which has led to larger coated colloidal nanoparticles than in the case of the mechanical mixing; the most important inconvenient is consistent with the various large size aggregates that compromise the coherent behavior following the action of electromagnetic fields which could be unavoidable in some practical situations. Regarding the applications in life sciences of magnetic core/oleic acid systems dispersed in hydrocarbons, diluted suspensions were found useful in studying the influence on vegetal cells in early ontogenetic stages due to the convenient homogeneous mixing with agarized culture media that solidify at room temperature [19][20].…”

Section: Resultsmentioning

confidence: 99%

Stable Colloidal Suspension of Magnetic Nanoparticles for Applications in Life Sciences

Puscasu

Nădejde

Creangă

et al. 2015

Materials Today: Proceedings

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Accumulation dynamics and some cytogenetical tests at Chelidonium majus and Papaver somniferum callus under the magnetic liquid effect

Cited by 21 publications

References 1 publication

Impact of Magnetite Nanoparticles Coated with Aspartic Acid on the Growth, Antioxidant Enzymes Activity and Chlorophyll Content of Maize

Impact of Magnetite Nanoparticles Coated with Aspartic Acid on the Growth, Antioxidant Enzymes Activity and Chlorophyll Content of Maize

Iron oxide nanoparticles coated with β-cyclodextrin polluted of Zea mays plantlets

Stable Colloidal Suspension of Magnetic Nanoparticles for Applications in Life Sciences

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