Physiological and biochemical effect of silver on the aquatic plant Lemna gibba L.: Evaluation of commercially available product containing colloidal silver

Varga, Martina; Horvatić, Janja; Barišić, Lara; Lončarić, Zdenko; Sikirić, Maja Dutour; Erceg, Ina; Kočić, Aleksandra; Čamagajevac, Ivna Štolfa

doi:10.1016/j.aquatox.2018.11.018

Cited by 18 publications

(7 citation statements)

References 72 publications

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“…The differences in the activity of antioxidant enzymes when comparing the effect of 1 and 2% silver are probably due to the silver part of the nanofiber-silver complex. It was reported that colloidal silver caused significant changes in physiological and biochemical processes in Lemna gibba L. [ 52 ]. The authors observed a concentration- and time-dependent oxidative stress, resulting in elevated total phenol content and activity of the antioxidant enzymes (SOD, CAT, APX, and GPO).…”

Section: Discussionmentioning

confidence: 99%

Improvement of Stevia rebaudiana Bertoni In Vitro Propagation and Steviol Glycoside Content Using Aminoacid Silver Nanofibers

Sichanova

Geneva

Petrova

et al. 2022

Plants

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The food industry is interested in replacing artificial sweeteners with natural sugars that possess zero calories and carbohydrates and do not cause spikes in blood sugar levels. The steviosides leaves, synthesized at Stevia rebaudiana Bertoni, are 300 times sweeter than common table sugar. Stevia propagation is limited due to the poor viability of the seeds, the long time and low germination rate, and the poor rooting ability of vegetative cuttings. Because of this, an alternative biotechnological method for its reproduction is being studied, such as multiple shoot production through direct organogenesis using nanofibers, formed from a derivative of amino acid valine as a carrier of the biologically active agent silver atoms/particles (NF-1%Ag and NF-2%Ag). The stevia explants were cultured on a medium containing NF-1%Ag and NF-2%Ag at concentrations of 1, 10, 50, and 100 mg L−1. The NF-1%Ag and NF-2%Ag treatment caused hormetic effects on stevia plantlets. At low concentrations of from 1 to 50 mg L−1 of nanofibers, the stimulation of plant growth was observed, with the maximum effect being observed at 50 mg L−1 nanofibers. However, at the higher dose of 100 mg L−1, inhibition of the values of parameters characterizing plant growth was recorded. The presence of nanofibers in the medium stimulates stevia root formatting.

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Section: Discussionmentioning

confidence: 99%

Improvement of Stevia rebaudiana Bertoni In Vitro Propagation and Steviol Glycoside Content Using Aminoacid Silver Nanofibers

Sichanova

Geneva

Petrova

et al. 2022

Plants

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“…According to the manufacturer’s label, the product consisted of Aqua pro injectione water and silver in a 25 mg/L concentration. A previous study showed that silver in this product is predominantly present in soluble ionic form, but a small portion of silver nanoparticles (average size 95 ± 22.69 nm) was also present [ 27 ]. Our earlier study found that this commercially available product stimulated different physiological responses in L. gibba grown on the full-strength nutrient solution [ 27 ].…”

Section: Methodsmentioning

confidence: 99%

“…A previous study showed that silver in this product is predominantly present in soluble ionic form, but a small portion of silver nanoparticles (average size 95 ± 22.69 nm) was also present [ 27 ]. Our earlier study found that this commercially available product stimulated different physiological responses in L. gibba grown on the full-strength nutrient solution [ 27 ]. Thus, in this study, we focused on the physiological responses in duckweed exposed to colloidal silver suspension in combination with different levels of total nitrogen and phosphorus nutrition.…”

Section: Methodsmentioning

confidence: 99%

“…Previously, we reported that a commercially available colloidal-silver-containing product caused concentration-dependent growth reduction and different physiological changes in treated duckweed plants [ 27 ]. Therefore, in this study, we focused on the effects of total nitrogen and total phosphorus nutrition on the ability of L. gibba to adequately respond to short-term pulse exposure to a colloidal-silver-containing commercially available product as a potential exposure scenario in the environment.…”

Section: Introductionmentioning

confidence: 99%

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Physiological Response of Nutrient-Stressed Lemna gibba to Pulse Colloidal Silver Treatment

Varga

Pfeiffer

Begović

et al. 2023

Plants

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Wastewater is a source of many environmental pollutants and potentially high concentrations of essential plant nutrients. Site-specific nutrient levels may influence the response of exposed plants to a chemical stressor. In the present study, we focused on the responses of model aquatic macrophyte swollen duckweed (Lemna gibba L.) to a short pulse exposure and a commercially available colloidal silver product as a potential environmental chemical stressor, combined with two levels of total nitrogen and phosphorus nutrition. Treatment with the commercially available colloidal silver product caused oxidative stress in L. gibba plants under both high and low nutrient levels. Plants grown and treated under high nutrient levels showed lower levels of lipid peroxidation and hydrogen peroxide accumulation, as well as higher levels of photosynthetic pigment content in comparison to treated plants under low nutrient levels. Higher free radical scavenging activity for plants treated with silver in combination with high nutrient levels resulted in better overall protection from silver-induced oxidative stress. The results showed that external nutrient levels significantly affected the L. gibba plant’s response to the colloidal silver presence in the environment and that nutrient levels should be considered in the assessment of potential environmental impact for contaminants.

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“…In the ecosystems, NPs can interact with aquatic higher plants-a class of plants among primary energy-producing organisms; hence, it can act as a potential reservoir, and source of NPs for subsequent transfer to higher trophic levels [8,17]. Interactions of NPs with aquatic higher plants have been reported as being influenced by numerous factors such as plant species [18,19], NPs' size [20], NPs morphology [21], dissolution rate of the NPs [22,23], NPs surface properties [24][25][26], NPs exposure concentration [27,28], and environmental conditions such as the presence of UV radiation [29] but the findings were inconclusive and contradictory. For example, Glenn et al [20] investigated the uptake of different-sized nAu (4 and 18 nm) at 250 µg/L to three morphologically distinct aquatic higher plants (Myriophyllum simulans Orchard., Egeria densa Planch., and Azolla caroliniana Willd.).…”

Section: Introductionmentioning

confidence: 99%

Interactions of Coated-Gold Engineered Nanoparticles with Aquatic Higher Plant Salvinia minima Baker

2021

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The study investigated the interactions of coated-gold engineered nanoparticles (nAu) with the aquatic higher plant Salvinia minima Baker in 2,7, and 14 d. Herein, the nAu concentration of 1000 µg/L was used; as in lower concentrations, analytical limitations persisted but >1000 µg/L were deemed too high and unlikely to be present in the environment. Exposure of S. minima to 1000 µg/L of citrate (cit)- and branched polyethyleneimine (BPEI)-coated nAu (5, 20, and 40 nm) in 10% Hoagland’s medium (10 HM) had marginal effect on biomass and growth rate irrespective of nAu size, coating type, or exposure duration. Further, results demonstrated that nAu were adsorbed on the plants’ roots irrespective of their size or coating variant; however, no evidence of internalization was apparent, and this was attributed to high agglomeration of nAu in 10 HM. Hence, adsorption was concluded as the basic mechanism of nAu accumulation by S. minima. Overall, the long-term exposure of S. minima to nAu did not inhibit plant biomass and growth rate but agglomerates on plant roots may block cell wall pores, and, in turn, alter uptake of essential macronutrients in plants, thus potentially affecting the overall ecological function.

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Physiological and biochemical effect of silver on the aquatic plant Lemna gibba L.: Evaluation of commercially available product containing colloidal silver

Cited by 18 publications

References 72 publications

Improvement of Stevia rebaudiana Bertoni In Vitro Propagation and Steviol Glycoside Content Using Aminoacid Silver Nanofibers

Improvement of Stevia rebaudiana Bertoni In Vitro Propagation and Steviol Glycoside Content Using Aminoacid Silver Nanofibers

Physiological Response of Nutrient-Stressed Lemna gibba to Pulse Colloidal Silver Treatment

Interactions of Coated-Gold Engineered Nanoparticles with Aquatic Higher Plant Salvinia minima Baker

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