Particle surface characteristics may play an important role in phytotoxicity of alumina nanoparticles

Yang, Ling; Watts, Daniel J.

doi:10.1016/j.toxlet.2005.03.003

Cited by 578 publications

(241 citation statements)

References 29 publications

Supporting

Mentioning

229

Contrasting

Unclassified

Order By: Relevance

“…Moreover, ZnO and TiO 2 nanoparticles have different rate of permeability through cell wall. Almost similar result was reported by Yang and Watts (2005), and they highlighted that nanoalumina (Al 2 O 3 ) at 2000 mg/L could inhibit root elongation of five plant species. Root dry biomass (g) 0.01 ± 10 -4a 0.005 ± 10 -4b 0.005 ± 10 -4b 0.007 ± 10 -5b 0.02 ± 10 -4b 0.02 ± 10 -4b 0.02 ± 10 -4b…”

Section: Root Morphology Studysupporting

confidence: 82%

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Hajra

Mondal

2017

Energ. Ecol. Environ.

View full text Add to dashboard Cite

With the development of nanotechnology, metal oxide nanoparticles have been applied in many industries, increasing their potential exposure level in the environment, yet their environmental safety remains poorly evaluated. Present work demonstrated the effects of ZnO and TiO 2 nanoparticles on the germination, morphoanatomical attributes and biochemistry of Cicer arietinum. The nanoparticles are used in three doses, i.e., 100, 500 and 1000 ppm along with control and each dose has three replicates. Results demonstrated that ZnO nanoparticles did not aid in the germination of seed, whereas TiO 2 nanoparticles showed positive impact on germination at 48-h observation. But at 72-h observation both the nanoparticle-treated and control seeds showed 100% germination. Morphological parameters revealed that ZnO nanoparticles have drastic negative impact on both root and shoot length, root and shoot fresh and dry biomass. On the other hand, the status of chlorophyll is almost opposite, i.e., ZnO nanoparticle-treated plants showed higher pigment content than TiO 2 nanoparticle-treated plants. From the statistical point of view, it is revealed that ZnO nanoparticle-treated plant showed significantly different results than that of TiO 2 nanoparticle-treated plants in Chl 'a' (p \ 0.001), Chl 'b' (p \ 0.001), total Chl (p \ 0.001) and carotenoid (p \ 0.001) content. Therefore, from these observations it can be concluded that ZnO nanoparticles showed positive effect on plant pigment content.Transverse sections of root clearly revealed the formation of vascular bundle, and parenchyma tissue is hampered in all the ZnO nanoparticle-treated plants. However, wellformed vascular bundles and other tissue systems are clearly visible for TiO 2 nanoparticle-treated roots. This work shows a combination of both positive and negative effects of ZnO and TiO 2 nanoparticles on a dicot plant. Present observation is very much important to understand the morphological, biochemical and anatomical alteration of plant system under the influence of ZnO and TiO 2 nanoparticles. This will help to utilize the nanoparticles in a managed way where nanoparticles with harmful effect on biological systems can be used in such a way to reduce their exposure to environment, and on the other hand, nanoparticles showing positive effect on biological systems may be used as growth enhancers or biofertilizers. Moreover, these results further strengthen our understanding of environmental safety information with respect to metal oxide nanoparticle.

show abstract

Section: Root Morphology Studysupporting

confidence: 82%

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Hajra

Mondal

2017

Energ. Ecol. Environ.

View full text Add to dashboard Cite

show abstract

“…On the other hand, Lin and Xing [11] reported insignificant MWCNT toxicity on seed germination and root growth in six plant species, but only one concentration was examined, which indicates the need for further study. The effects of alumina nanoparticles on root elongation were also demonstrated by Yang and Watts [12] in five crop species: corn, cucumber, soybean, cabbage, and carrot. Our previous study found that MWCNTs interact directly with rice cells and may have a detrimental effect on rice growth [9].…”

Section: Introductionmentioning

confidence: 70%

Studies on toxicity of multi-walled carbon nanotubes on suspension rice cells

Tan

Lin

Fugetsu

2009

Carbon

250

111

View full text Add to dashboard Cite

Possible toxic effects of multi-walled carbon nanotubes (MWCNTs) on plant cells were investigated. Suspension rice cells (Oryza sativa L) were cultured with MWCNTs; reactive oxygen species (ROS) increased and cell viability decreased were observed.When ascorbic acid, a primary antioxidant, was introduced into the culture suspension, the ROS content decreased and cell viability increased. Transmission electron microscopy revealed individual tubes in contact with the cell walls. The suspension rice cells with individual MWCNTs at their cell wall seemed to undergo a hypersensitive response, namely the ROS defense response cascade, which is sufficient to prevent microbial pathogens from completing their life cycle.

show abstract

“…In a study by Yanik and Vardar, 74 different concentrations of 13-nm Al2O3 inhibited wheat root growth consistent with the study of Yang and Watts. 71 Their results also confirmed that toxicity was closely associated with a decrease in particle size. Asztemborska et al 75 investigated the effects of Al2O3 particle size (nano or micro) on bioaccumulation by four different plant species.…”

mentioning

confidence: 72%

“…In early studies, Yang and Watts reported inhibition of root elongation as an effect of 13-nm sized Al2O3 in maize, cucumber, soybean, cabbage and carrot. 71 Later, Lin and Xing, using larger particles of Al2O3 (60 nm), reported no phytotoxicity to radish, rape, ryegrass, lettuce and cucumber, while the root elongation was reduced by 35 % in maize. 72 Other studies indicated that 100-nm and 150-nm Al2O3 particles had no adverse effect on the growth of Phaseolus vulgaris and Lolium perenne, and Arabidopsis thaliana, respectively.…”

mentioning

confidence: 99%

Potential Environmental Impact of Nanoenergetics

Perreault

2018

ECB

View full text Add to dashboard Cite

Particle surface characteristics may play an important role in phytotoxicity of alumina nanoparticles

Cited by 578 publications

References 29 publications

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Studies on toxicity of multi-walled carbon nanotubes on suspension rice cells

Potential Environmental Impact of Nanoenergetics

Contact Info

Product

Resources

About