Interaction of carbon nanotubes with plant system: a review
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Carbon Letters https://doi.org/10.1007/s42823-020-00195-1
REVIEW
Interaction of carbon nanotubes with plant system: a review Silvy Mathew1 · D. K. Tiwari2 · Dhananjay Tripathi3 Received: 4 July 2020 / Revised: 24 September 2020 / Accepted: 29 September 2020 © Korean Carbon Society 2020
Abstract Recent years have witnessed remarkable development in the field of nanotechnology and it has been affirmed that carbonbased nanomaterials have wide applications in agriculture, industrial, biomedical and environmental sectors. Due to distinctive physicochemical properties of the carbon nanotubes (CNTs), they have been extensively utilized in plant science as a growth promoter, and thus, could be a boon for biomass production of agricultural products. Studies suggest that CNTs help increase the plant’s ability to absorb water and essential nutrients, thereby increasing growth. Apart from this, CNTs have been scrutinized for their utilization in genetic engineering for the delivery of genes, proteins or drugs. However, the literature discloses mixed effects of CNTs exposure on plants like in inducing oxidative stress by generating reactive oxygen species (ROS). Moreover, studies concerning CNTs interaction with plant system is at a nascent stage and needs further investigations to explore the mechanisms influencing the growth and toxicity in plants. Therefore, this review attempts to highlight the current literature on CNTs (including both single walled and multi walled) exposure on plants. It also explores unresolved challenges, as well as recommendations to ensure sustainable development of CNTs while minimizing any possible adverse health impacts. Keywords Carbon nanotubes · Single walled · Multi walled · Plant growth · Agricultural application
1 Introduction Nanotechnology, a new emerging field of science, permits advanced research in several areas. The use of nanoscience for the production of engineered nanomaterials like CNTs is a scientific breakthrough and could open up novel applications in the field of biotechnology, agriculture and others [1]. CNTs are hollow cylinders of carbon atoms that appear like rolled tubes of graphite formed in large bundles of single or multiple sheets of graphene to give single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs), respectively. It is a honeycomb lattice rolled on to itself, with lengths ranging from several hundred nanometers to several micrometers and diameters of a few * Silvy Mathew [email protected] 1
Post Graduate Department of Botany Vimala College (Autonomous), Thrissur, Kerala, India
2
CONACYT- El Colegio de Michoacán/LADIPA, La Piedad, C. P. 59370 Michoacán, México
3
ICMR- National Institute for Research in Environmental Health (NIREH), Bhopal, India
nanometers (SWCNTs) to dozens of nanometers (MWCNTs) [2]. They are a large group of carbon-based, tube-like nanomaterials, which not only differ in length and the number of layers they consist of but also vary in types of impurity, contents and surface modification.
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