Effects of TiO 2 nanoparticles on the aquatic plant Spirodela polyrrhiza : Evaluation of growth parameters, pigment contents and antioxidant enzyme activities

Movafeghi, Ali; Khataee, Alireza; Abedi, Mahboubeh; Tarrahi, Roshanak; Dadpour, Mohammad Reza; Vafaei, Fatemeh

doi:10.1016/j.jes.2016.12.020

Cited by 109 publications

(33 citation statements)

References 56 publications

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“…Both studies demonstrated the entry of TiO 2 NPs in the roots by markedly shiny spots at high inside the roots, representing aggregation. Similar to our observations, fluorescence microscopy imaging techniques were used to indicate the entrance of magnetic NPs into soybean plant tissues as shown in previous reports 26,39 . From an application point of view, various parameters such as size, concentration and aggregation of NPs are the most important issues in agriculture, playing important roles in determining reactivity, toxicity, fate, transport and risk in the environment 40 .…”

Section: Resultssupporting

confidence: 66%

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Titanium dioxide nanoparticles (TiO2 NPs) promote growth and ameliorate salinity stress effects on essential oil profile and biochemical attributes of Dracocephalum moldavica

Gohari

Mohammadi

Akbari

et al. 2020

Sci Rep

374

131

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considering titanium dioxide nanoparticles (tio 2 nps) role in plant growth and especially in plant tolerance against abiotic stress, a greenhouse experiment was carried out to evaluate TiO 2 NPs effects (0, 50, 100 and 200 mg L −1) on agronomic traits of Moldavian balm (Dracocephalum moldavica L.) plants grown under different salinity levels (0, 50 and 100 mM NaCl). Results demonstrated that all agronomic traits were negatively affected under all salinity levels but application of 100 mg L −1 tio 2 nps mitigated these negative effects. TiO 2 NPs application on Moldavian balm grown under salt stress conditions improved all agronomic traits and increased antioxidant enzyme activity compared with plants grown under salinity without tio 2 NP treatment. The application of TiO 2 NPs significantly lowered H 2 o 2 concentration. In addition, highest essential oil content (1.19%) was obtained in 100 mg L −1 tio 2 nptreated plants under control conditions. Comprehensive GC/MS analysis of essential oils showed that geranial, z-citral, geranyl acetate and geraniol were the dominant essential oil components. The highest amounts for geranial, geraniol and z-citral were obtained in 100 mg L −1 tio 2 np-treated plants under control conditions. In conclusion, application of 100 mg L −1 tio 2 NPs could significantly ameliorate the salinity effects in Moldavian balm. Moldavian balm (Dracocephalum moldavica L.), a perennial herb of the Lamiaceae family and native to central Asia, naturalized in central and eastern Europe and is cultivated around the world as a medicinal plant. Essential oils and extracts of Moldavian balm have been traditionally used as a painkiller for kidney complaints, toothache and colds. In addition, it has antimicrobial activities 1 , antirheumatic, antitumor, antimutagenic, antioxidant and antiseptic properties 2. Aerial parts of Moldavian balm are important sources of monoterpene glycosides, trypanocidal terpenoids, rosmarinic acid and flavonoids 3. Salinity stress is considered as one of the main environmental factors limiting plant distribution in their natural habitats 4. Soil salinity affects about 800 million hectares of arable land worldwide. Salinity stress causes major problems regarding plant growth, development and productivity, especially in arid and semi-arid regions of the world 5 manifested as changes in morphological, physiological and biochemical characteristics of plants, ion toxicity (Na + and Cl −), nutritional disorders and osmotic stress. These negative impacts significantly decrease plant

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Section: Resultssupporting

confidence: 66%

“…Present results demonstrated that the high concentration of TiO 2 NPs increased their aggregations in the plant root. TiO 2 was actively taken up in Spirodela polyrrhiza roots and aggregated in the plant cells at toxic concentration 39 (See Supporting www.nature.com/scientificreports www.nature.com/scientificreports/ Information Fig. S1).…”

Section: Resultsmentioning

confidence: 99%

Titanium dioxide nanoparticles (TiO2 NPs) promote growth and ameliorate salinity stress effects on essential oil profile and biochemical attributes of Dracocephalum moldavica

Gohari

Mohammadi

Akbari

et al. 2020

Sci Rep

374

131

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“…The growth inhibition rate of nano and bulk TiO 2 was measured each day, (as presented in Fig 7). These findings were similar to other studies (Cardinale et al, 2012;Wang et al, 2016;Movafeghi et al, 2018;Manzo et al, 2015;Chen et al, 2015Chen et al, , 2012. Toxicity mechanism was performed by covered cell surfaces by the aggregates can induce a certain inhibition of the photosynthetic activity due to the reduction of the light availability (Navarro et al, 2008a).…”

Section: Effect Of Nano and Bulk Tio 2 On Algal Growthsupporting

confidence: 90%

Toxic effect of nano and bulk TiO2 on growth, chlorophyll a content and oxidative stress of marine diatom Chaetoceros muelleri

Baharlooeian¹,

Haq²

2020

Nipp J Environ Sci

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Nanoparticles are widely used in many applications. The recent increase in nanomaterials usage has led to raising concerns about its health risks and environmental impact. In this study, we examined the toxicity effects of nanoparticles TiO 2 and bulk Ti on marine diatom chatetoceros muelleri. We treated microalgae with equal amounts of nano and bulk TiO 2 in different concentrations include 0, 10, 50, 100, 200 and 300 ppm, then was investigated their growth in 96 h. Observations demonstrated growth inhibition in 50 mg/L from first exposure day for nano and bulk TiO 2. Furthermore, the chlorophyll a content strongly decreased in nano and bulk in TiO 2 in different days rather than control, respectively. As well as, results showed that, antioxidant values in nano-treated samples were higher than bulk in comparison control. In addition, we found that nano was more toxic than bulk. We aimed, indicating critical impacts of nTiO 2 on the ecosystem.

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“…The increasing concentration of TiO 2 -NPs led to a significant reduction of all growth parameters of Lemna paucicostata and Spirodela polyrhiza. In the latter, the changes in antioxidant enzymes activity were shown (Kim et al, 2014;Movafeghi et al, 2018). The effect of TiO 2 -NPs strongly depends on the concentration and species of the plant.…”

Section: Resultsmentioning

confidence: 98%

Effect of ZnO, TiO2, Al2O3 and ZrO2 nanoparticles on wheat callus cells

Czyżowska

Barbasz

2019

Acta Biochim Pol

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Effect of metal oxide nanoparticles on calli of two wheat varieties: Parabola (stress tolerant) and Raweta (sensitive) was studied. ZnO induced 10% larger membrane damage in Raweta calli. TiO 2 , Al 2 O 3 , and ZrO 2 caused nearly 30% greater lactate dehydrogenase leakage for Raweta compared to Parabola. UV-irradiation of samples containing ZnO particles intensified this effect. Membrane lipid peroxidation in ZnO treated Raweta calli was twice as high as in Parabola and further increased after UV-irradiation. TiO 2 , Al 2 O 3 , and ZrO 2 nanoparticles caused a 4-fold increase in malondialdehyde concentration in Raweta calli in comparison to Parabola calli. The nanoparticles studied damaged the cellular defense system by inactivating the antioxidative enzymes.

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Effects of TiO 2 nanoparticles on the aquatic plant Spirodela polyrrhiza : Evaluation of growth parameters, pigment contents and antioxidant enzyme activities

Cited by 109 publications

References 56 publications

Titanium dioxide nanoparticles (TiO2 NPs) promote growth and ameliorate salinity stress effects on essential oil profile and biochemical attributes of Dracocephalum moldavica

Titanium dioxide nanoparticles (TiO2 NPs) promote growth and ameliorate salinity stress effects on essential oil profile and biochemical attributes of Dracocephalum moldavica

Toxic effect of nano and bulk TiO2 on growth, chlorophyll a content and oxidative stress of marine diatom Chaetoceros muelleri

Effect of ZnO, TiO2, Al2O3 and ZrO2 nanoparticles on wheat callus cells

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