Effects of nano-TiO2 on photosynthetic characteristics of Ulmus elongata seedlings

Gao, Jianguo; Gen-di, XU; Qian, Huanhuan; Liu, Peng; Zhao, Ping; Hu, Yong

doi:10.1016/j.envpol.2013.01.027

Cited by 144 publications

(58 citation statements)

References 48 publications

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“…It has been documented that plants under optimum condition tend to increase growth period as much as possible which can result in improved leaf photosynthesis, light-use potential and higher yield (Cui et al, 2015). This study showed that nano-fertilizers and nano TiO 2 considerably influenced the straw (SY) and grain yield (GY), which corroborate the findings of a great deal of the previous work (Gao et al, 2013;Morteza et al, 2013;Klingenfuss, 2014;Tarafdar et al, 2014). Foliar utilization of micronutrients improved straw yield and grain yield up to 7 % and 16 % over to control, respectively.…”

Section: Resultssupporting

confidence: 81%

“…In plant nanoparticles may adsorb to plant surface and taken up through natural nano or micrometer scale openings. The results of other previous studies demonstrated nTiO 2 as an efficient photocatalyst by improving the photosynthetic complexes, and nitrogen metabolism can enhance cell growth as well as fresh and dry mass of plant (Morteza et al, 2013;Gao et al, 2013;Klingenfuss, 2014;Rezaei et al, 2015;Raliya et al, 2015). However evidence from this study suggested that nTiO 2 along with nano-fertilizers can effectively influence both vegetative and reproductive characteristics under supplemental irrigation in semi-arid region.…”

Section: Resultscontrasting

confidence: 51%

“…It is recognized that the grain number per spike is strongly depended on assimilates allocation to the spike and it is limited by postphloem assimilate supply (Saalbach et al, 2014). Nano-titanium dioxide (nTiO 2 ) with photocatalytic property can increase photosynthesis by promoting cyclic and linear photophosphorylation (Gao et al, 2013) and it can result in enhancement of photoassimilates supply in leaves (i.e., increasing source capacity). However, positive effect of nTiO 2 on grain number per spike in this study corroborates these earlier findings of Rezaei et al (2015).…”

Section: Resultsmentioning

confidence: 99%

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Impact of foliar application of nano micronutrient fertilizers and titanium dioxide nanoparticles on the growth and yield components of barley under supplemental irrigation

Janmohammadi¹,

Amanzadeh²,

Sabaghnia³

et al. 2016

AAS

114

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Nano-fertilizers are new generation of the synthetic fertilizers which contain readily available nutrients in nano scale range. Nano fertilizers are preferred largely due to their efficiency and environment friendly nature compared to conventional chemical fertilizers. To evaluate the effects of foliar spray of micronutrient nano-fertilizer (iron and zinc) and nano-titanium dioxide (nTiO2) solution on grain yield and its components in barley under supplemental irrigation conditions, a field experiment was carried out in the semi-arid highland region of Maragheh, Iran. Barley plants were separately treated with of chelated nano-scale zinc oxide (ZnO) and ferric oxide (Fe2O3) suspensions during tillering stage, booting and milky stages. Results revealed that days to anthesis and maturity significantly increased after application of both nano-fertilizers. Furthermore, a considerable improvement was observed in grain mass, spike length, number of the grains per spike, chlorophyll content, grain yield and harvest index by application of nano-fertilizer. However the impact of nano zinc fertilizer was more prominent than iron. Foliar application of nTiO2 positively affected some morphophysiological characteristics like as days to anthesis, chlorophyll content and straw yield. The results suggest that the delivery of Zn into barley seedling through spray of nano-fertilizer can be an efficient nutrient management strategy in semi-arid regions. Overall, our result indicated that the integration of nanotechnology in fertilizer products can improve fertilizer use efficiency and significantly increase of barley yield. However, plant response to nanoparticles significantly depend on concentration and time of application as well as size, shape, and surface functionalization of the particles.

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Section: Resultssupporting

confidence: 81%

Section: Resultscontrasting

confidence: 51%

Section: Resultsmentioning

confidence: 99%

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Impact of foliar application of nano micronutrient fertilizers and titanium dioxide nanoparticles on the growth and yield components of barley under supplemental irrigation

Janmohammadi¹,

Amanzadeh²,

Sabaghnia³

et al. 2016

AAS

114

View full text Add to dashboard Cite

show abstract

“…Higher GTW indicates increased individual grain sink strength which can be depicted as the output of sink activity and sink size (Yang et al, 2003). Nano-titanium dioxide (TiO 2 ) can enhance photosynthesis by promoting cyclic and linear photophosphorylation (Gao et al, 2013) and it can result in enhancement of carbohydrate production in leaves, and its positive effect on most traits of barley is in good agreement with the findings of Rezaei et al (2015). There are some compensating effects between grain number per spike and grain weight in the current study because application of nanofertilizers increased both traits and their effects appeared in higher grain yield.…”

Section: Resultssupporting

confidence: 79%

Investigation of foliar application of nano-micronutrientfertilizers and nano-titanium dioxide on some traits of barley

Janmohammadi¹,

Sabaghnia²,

Dashti³

et al. 2016

biologija

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Nanofertilizers are new products which contain readily available nutrients in the nanoscale range and are preferred largely due to their efficiency. To investigate the effects of micronutrient nanofertilizers (iron and zinc) as F factor and nano-titanium dioxide (nano-TiO 2 ) solution as n factor on yield performance and some morphologic traits of barley, a field experiment was carried out with treating with chelated nanoscale zinc oxide (nano-ZnO) and ferric oxide (nano-Fe 2 O 3 ) suspensions during three phonological stages. The treatment combination by trait (TT) biplot was used for two-way dataset as various treatment combinations (Fn) with multiple traits. The GT biplot explained 83% of the total variation of the standardized data. The polygon view of TT showed five vertex treatment combinations as F1n1, F1n2, F2n2, F3n1, and F3n2. Therefore, it seems that F3n1 treatment combination had the highest values for all of the days to maturity, grain yield, straw yield, harvest index, spike length, number of fertile tillers, and grain weight per plant traits. The most prominent relations of tester-view biplot were: a strong positive association between days to maturity and straw yield and among grain yield, harvest index and spike length, while there was a near zero correlation of the number of tillers per plants with days to maturity and straw yield. It can be concluded that TiO 2 nanoparticles and nano-micronutrient fertilizers (iron nano-chelate and zinc nano-chelate) could increase yield and yield components of barley. Our findings suggest that the foliar application of nanoparticles resulted in sustainable and high crop production, and among six treatment combinations, F3n2 (zinc nano-chelate with 2000 ppm nano-TiO 2 ) indicated the best performance for most of the measured traits of barley.

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“…It seems that this enzyme oxidizes the chromophores and removes the colour from bleaching wastewater. The colour removal from effluents at neutral pH by low levels of hydrogen peroxide (H 2 O 2 ) was enhanced by the addition of peroxidase (Raj et al, 2014;Gao et al, 2013).…”

Section: Treatment With Algaementioning

confidence: 99%

A review on bioremediation of pulp and paper mill effluent – An alternative to conventional remedial technologies

Madan

Sachan

Singh

2018

JANS

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At present, a large amount of water required for paper production and various chemicals has been identified in effluents, which is produced at different steps of paper making in paper mills. The pulp and paper industry is typically related to pollution difficulties related to high biological oxygen demand (BOD), chemical oxygen demand (COD), colour, suspended solids, lignin and chlorinated compounds. Several studies have been made on eliminate these difficulties of pulp and paper effluents, the problem still continues. Although the physical and chemical methods are on the track of treatment, they are not on par with biological treatment because of cost ineffectiveness and residual effects. The biological treatment is known to be effective in reducing the organic load and toxic effects of paper mill effluents. Some microorganisms including bacteria and fungi have been involved in degrading the chemicals present in pulp and paper mill effluent. This article is an overview of the attempts made by several researchers worldwide to use biotechnological methods for degradation of the toxic compounds present in pulp and paper mill effluents by using fungi, bacteria, algae and enzymes. The current study clearly shows that application of native dominant bacterial and fungal isolates may be used forthe treatment of large pulp and paper mills effluents.

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Effects of nano-TiO2 on photosynthetic characteristics of Ulmus elongata seedlings

Cited by 144 publications

References 48 publications

Impact of foliar application of nano micronutrient fertilizers and titanium dioxide nanoparticles on the growth and yield components of barley under supplemental irrigation

Impact of foliar application of nano micronutrient fertilizers and titanium dioxide nanoparticles on the growth and yield components of barley under supplemental irrigation

Investigation of foliar application of nano-micronutrientfertilizers and nano-titanium dioxide on some traits of barley

A review on bioremediation of pulp and paper mill effluent – An alternative to conventional remedial technologies

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