Effect of Nano-TiO&lt;SUB&gt;2&lt;/SUB&gt; on Photochemical Reaction of Chloroplasts of Spinach

Hong, Fashui; Zhou, Juan; Liu, Chao; Yang, Fan; Wu, Cheng Wen; Zheng, Lei; Yang, Ping

doi:10.1385/bter:105:1-3:269

Cited by 387 publications

(174 citation statements)

References 7 publications

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“…This would obviously lead to enhancement of oxygen evolution and generation of additional excited electrons (Su et al, 2007). Under normal environmental condition, it may proliferate photosynthetic capacity and hence promote growth of some plants (Hong et al, 2005). However, under drought stress condition when stomata are tightened and the most electron acceptors are in reduced form, production of these excessive excited electrons due to presence of TiO 2 can result in huge production of free radicals and photo oxidative damages.…”

Section: Foliar Application Of Tio 2 Np Under Water-deficit Stressmentioning

confidence: 99%

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Mohammadi

Esmailpour

Gheranpaye

2016

AAS

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Water-deficit stress is the most important environmental factors limiting plant growth, and production. Nano-titanium dioxide (nano anataseTiO 2 ) can have various profound effects on the crop physiological, biochemical and morphological characteristics. In the present research, the influences of different concentrations ofTiO 2 nanoparticles (NPs) (0, 10 and 40 ppm) and water-deficit stress on Dragonhead (Dracocephalum moldavica L.) were investigated in a factorial experiment based on randomized complete block design with three replications. Results showed that under normal irrigation, foliar application of 10 ppm TiO 2 NPs increased plant shoot dry mass and essential oils content. Under water-deficit stress condition, plants treated with 10 ppm TiO 2 NPs had more proline and much less H 2 O 2 and malondialdehyde content as compared to untreated plants. Therefore, it can be concluded that proper concentration of TiO 2 NPs probably can be used as an exogenous stimuli for improvement of shoot growth and essential oil content in plants. Furthermore, water-deficit stress-induced damages such as oxidative stress and membrane damage can be ameliorated by foliar application of TiO 2 NPs at appropriate concentrations. Sušni stres je eden izmed najpomembnejših okoljskih dejavnikov, ki omejujejo rast in produktivnost rastlin. Uporaba nano delcev titanovega dioksida (TiO 2 nano anataza) ima lahko velike učinke na fiziološke, biokemične in morfološke lastnosti gojenih rastlin. V tej raziskavi je bil v naključnem faktorskem bločnem poskusu preučevan vpliv različnih koncentracij nano delcev TiO 2 (0, 10 in 40 ppm) in sušnega stresa na moldavsko kačjeglavko (Dracocephalum moldavica L.) v treh ponovitvah. Rezultati so pokazali, da sta se suha masa in vsebnost eteričnih olj povečali pri normalnem namakanju in listnem dodajanju 10 ppm TiO 2 nano delcev. V razmerah sušnega stresa so vsebovale rastline, ki so bile tretirane z 10 ppm TiO 2 več prolina in mnogo manj H 2 O 2 in malonildialdehida v primerjavi z netretiranimi rastlinami. Na osnovi tega bi lahko zaključili, da bi z uporabo primerne koncentracije nano delcev TiO 2 kot zunanjega stimulanta, lahko izboljšali rast poganjkov in vsebnost eteričnih olj pri tej rastlini. Poškodbe kot sta oksidativni stres in poškodovanost membran, ki nastanejo zaradi sušnega stresa, bi lahko ublažili s foliarno aplikacijo primerne koncentracije nanodelcev TiO 2 .

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Section: Foliar Application Of Tio 2 Np Under Water-deficit Stressmentioning

confidence: 99%

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Mohammadi

Esmailpour

Gheranpaye

2016

AAS

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“…They found that the mixture of nanoparticles increases nitrate reductase in soybean, increasing its germination and growth. Hong et al 12,13 and Yang et al 14 reported that a proper concentration of nano-TiO 2 was found to improve the growth of spinach by promoting photosynthesis and nitrogen metabolism. Canas et al 15 found that nanofunctionalized carbon nanotubes enhanced root elongation in onion and cucumber.…”

Section: Introductionmentioning

confidence: 99%

Effect of nanoparticles suspension on the growth of mung (Vigna radiata) seedlings by foliar spray method

et al. 2013

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The present experimental investigation demonstrates the effect of nano-ZnO, nanoFeO and nano-ZnCuFe-oxide particles on the growth of mung (Vigna radiata) seedling. The study was carried out by spraying optimum concentrations of nanoparticles in suspension form on hydroponically grown test units and examining the effect on the shoot growth of seedlings. Based on biomass assay, it was found that the seedlings displayed good growth over control, demonstrating a positive effect of the nanoparticle treatment. The best performance was observed for nano-ZnCuFe-Oxide followed by nano-FeO and nano-ZnO. Absorption of nanoparticles by plant leaves was also detected by inductive coupled plasma/atomic emission spectroscopy.

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“…Among the positive effect reports on plants, nano-TiO 2 was observed to promote the growth of Spinach through an increase in photosynthetic rate and nitrogen metabolism [16], [17]. Carbon nanotubes (CNTs) could enhance root growth of onion (Allium cepa) and cucumber (Cucumis sativa) and nanotubes sheets were formed by both functionalized single-walled carbon nanotubes (fCNTs) and nonfunctionalized (CNTs) on root surfaces but none entered into the roots [18].…”

mentioning

confidence: 99%

Toxicity of ZnO and TiO2 Nanoparticles on Germinating Rice Seed Oryza sativa L

Boonyanitipong¹,

Kositsup²,

Kumar³

et al. 2011

IJBBB

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Abstract-The present study is aimed at investigating the effects of zinc oxide nanoparticles (nano-ZnO) and titanium dioxide nanoparticles (nano-TiO2) on rice (Oryza sativa L.) roots. Three parameters are examined in this study: seed germination percentage, root length, and number of roots. The results show that there is no reduction in the percent seed germination from both nanoparticles, however nano-ZnO is observed to have detrimental effects on rice roots at early seedling stage. Nano-ZnO is found to stunt roots length and reduce number of roots. Whereas nano-TiO 2 has no effect on root length. This study shows that direct exposure to specific types of nanoparticles causes significant phytotoxicity, emphasizes the need for ecologically responsible disposal of wastes containing nanoparticles and also highlights the necessity for further study on the impacts of nanoparticles on agricultural and environmental systems.

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Effect of Nano-TiO<SUB>2</SUB> on Photochemical Reaction of Chloroplasts of Spinach

Cited by 387 publications

References 7 publications

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Effect of nanoparticles suspension on the growth of mung (Vigna radiata) seedlings by foliar spray method

Toxicity of ZnO and TiO2 Nanoparticles on Germinating Rice Seed Oryza sativa L

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