Carbon nanotubes: Impacts and behaviour in the terrestrial ecosystem - A review

Liné, Clarisse; Larue, Camille; Flahaut, Emmanuel

doi:10.1016/j.carbon.2017.07.089

Cited by 82 publications

(33 citation statements)

References 123 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The unique physicochemical properties of multi-walled carbon nanotubes (MWNTs) lend themselves to a variety of industrial and biomedical applications (for recent reviews, see [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]). However, there are environmental health and safety (EH&S) concerns associated with MWNTs because of consistent reports that they can be toxic (for recent reviews, see [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ]). Moreover, anthropogenic MWNTs have been found in the lungs of asthmatic Parisian children not known to have been exposed to a source of MWNTs, suggesting that MWNTs may be a previously unrecognized air pollutant [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

The Importance of Evaluating the Lot-to-Lot Batch Consistency of Commercial Multi-Walled Carbon Nanotube Products

et al. 2020

View full text Add to dashboard Cite

The biological response of multi-walled carbon nanotubes (MWNTs) is related to their physicochemical properties and a thorough MWNT characterization should accompany an assessment of their biological activity, including their potential toxicity. Beyond characterizing the physicochemical properties of MWNTs from different sources or manufacturers, it is also important to characterize different production lots of the same MWNT product from the same vendor (i.e., lot-to-lot batch consistency). Herein, we present a comprehensive physicochemical characterization of two lots of commercial pristine MWNTs (pMWNTs) and carboxylated MWNTs (cMWNTs) used to study the response of mammalian macrophages to MWNTs. There were many similarities between the physicochemical properties of the two lots of cMWNTs and neither significantly diminished the 24-h proliferation of RAW 264.7 macrophages up to the highest concentration tested (200 μg cMWNTs/mL). Conversely, several physicochemical properties of the two lots of pMWNTs were different; notably, the newer lot of pMWNTs displayed less oxidative stability, a higher defect density, and a smaller amount of surface oxygen species relative to the original lot. Furthermore, a 72-h half maximal inhibitory concentration (IC-50) of ~90 µg pMWNTs/mL was determined for RAW 264.7 cells with the new lot of pMWNTs. These results demonstrate that subtle physicochemical differences can lead to significantly dissimilar cellular responses, and that production-lot consistency must be considered when assessing the toxicity of MWNTs.

show abstract

Section: Introductionmentioning

confidence: 99%

The Importance of Evaluating the Lot-to-Lot Batch Consistency of Commercial Multi-Walled Carbon Nanotube Products

et al. 2020

View full text Add to dashboard Cite

show abstract

“…When investigating CNTs’ effects on root-associated microorganisms, the diversity of the soil microbiota was not influenced significantly in some cases [171,172]. In others, the effects were concentration-dependent [173], and differences were seen between functionalized and non-functionalized CNTs [172,173]. In other plants (e.g., tomato), the effects of CNTs were beneficial in terms of the amounts of flowers and fruits [171].…”

Section: Plant Microbiota and The Influence Of Enmsmentioning

confidence: 99%

Soybean Interaction with Engineered Nanomaterials: A Literature Review of Recent Data

et al. 2019

View full text Add to dashboard Cite

With a continuous increase in the production and use in everyday life applications of engineered nanomaterials, concerns have appeared in the past decades related to their possible environmental toxicity and impact on edible plants (and therefore, upon human health). Soybean is one of the most commercially-important crop plants, and a perfect model for nanomaterials accumulation studies, due to its high biomass production and ease of cultivation. In this review, we aim to summarize the most recent research data concerning the impact of engineered nanomaterials on the soya bean, covering both inorganic (metal and metal-oxide nanoparticles) and organic (carbon-based) nanomaterials. The interactions between soybean plants and engineered nanomaterials are discussed in terms of positive and negative impacts on growth and production, metabolism and influences on the root-associated microbiota. Current data clearly suggests that under specific conditions, nanomaterials can negatively influence the development and metabolism of soybean plants. Moreover, in some cases, a possible risk of trophic transfer and transgenerational impact of engineered nanomaterials are suggested. Therefore, comprehensive risk-assessment studies should be carried out prior to any mass productions of potentially hazardous materials.

show abstract

“…In the past 30 years, carbon nanotubes (CNTs) have received considerable attention due to their special structures and unique physical, chemical, biological properties, and huge application potential. Many researches on CNTs have focuses on novel sources of energy, new materials, biosensors, medicine, and hydrogen storage [1][2][3][4]. Undoubtedly, the researches on CNTs-plants are also emerging [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…However, the development of CNTs is not smooth sailing. Toxicity and environmental pollution problems have always occurred with the development of CNTs [3,6]. Although CNTs have the risk of polluting the ecological system, it still cannot deny its huge potential.…”

Section: Introductionmentioning

confidence: 99%

“…Although CNTs have the risk of polluting the ecological system, it still cannot deny its huge potential. Many scientists have used various means to reduce the toxicity of CNTs [3,7]. And because of vital roles of plants in the ecological system, the edible parts of crops are the possible routes for the uptake, translocation, and accumulation of CNTs, if they are used in agriculture [5,6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multi-Walled Carbon Nanotubes can Promote Root Hair Development Through Nitric Oxide and Ethylene Pathways

Zhao¹,

Zhao²,

Lou³

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Although carbon nanotubes (CNTs) have the risk of polluting the ecological system, it still cannot deny its huge potential in agriculture. Studying the effects of CNTs on plant growth will help to make new assessments of the application of CNTs in agriculture. Results: Here, we observed that the stimulation of plant root hair growth triggered by multi-walled carbon nanotube (MWCNTs) with appropriate concentrations is a universal event; however, low or excessive had no significant effect or even inhibition. Further results showed that MWCNTs could enter rapeseed root cells. Meanwhile, nitrate reductase (NR)-dependent nitric oxide (NO) and ethylene syntheses, as well as root hair formation were significantly stimulated by MWCNTs. Transcription of root hair growth related genes were also modulated. Above responses were obviously blocked by the removal of endogenous NO and ethylene with a scavenger of NO or NO/ethylene synthetic inhibitors. Similarly, MWCNTs-triggered root hair growth was obviously impaired in ein2-5 and ein3-1, two ethylene-insensitive mutants, and nia1/2, a nitric reductase defective mutant, but not in noa1 mutant, with impaired in NO-associated protein 1. Further molecular data placed NR-dependent NO synthesis linearly before ethylene production in root hair development triggered by MWCNTs.Conclusion: Above results revealed that MWCNTs could promote root hair growth. Ethylene and NR-dependent NO were required for MWCNTs-induced root hair morphogenesis via regulating genes related to root hair development, and ethylene might act downstream of NO in this process. Since root hair is one of important components for root organogenesis, above findings open a new window for the possible usage of CNTs in agriculture.

show abstract

Carbon nanotubes: Impacts and behaviour in the terrestrial ecosystem - A review

Abstract: OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 19342To link to this article :

Cited by 82 publications

References 123 publications

The Importance of Evaluating the Lot-to-Lot Batch Consistency of Commercial Multi-Walled Carbon Nanotube Products

The Importance of Evaluating the Lot-to-Lot Batch Consistency of Commercial Multi-Walled Carbon Nanotube Products

Soybean Interaction with Engineered Nanomaterials: A Literature Review of Recent Data

Multi-Walled Carbon Nanotubes can Promote Root Hair Development Through Nitric Oxide and Ethylene Pathways

Contact Info

Product

Resources

About