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Potential of carbon nanotubes in algal biotechnology

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An Erratum to this article was published on 10 February 2016

Abstract

A critical mass of knowledge is emerging on the interactions between plant cells and engineered nanomaterials, revealing the potential of plant nanobiotechnology to promote and support novel solutions for the development of a competitive bioeconomy. This knowledge can foster the adoption of new methodological strategies to empower the large-scale production of biomass from commercially important microalgae. The present review focuses on the potential of carbon nanotubes (CNTs) to enhance photosynthetic performance of microalgae by (i) widening the spectral region available for the energy conversion reactions and (ii) increasing the tolerance of microalgae towards unfavourable conditions occurring in mass production. To this end, current understanding on the mechanisms of uptake and localization of CNTs in plant cells is discussed. The available ecotoxicological data were used in an attempt to assess the feasibility of CNT-based applications in algal biotechnology, by critically correlating the experimental conditions with the observed adverse effects. Furthermore, main structural and physicochemical properties of single- and multi-walled CNTs and common approaches for the functionalization and characterization of CNTs in biological environment are presented. Here, we explore the potential that nanotechnology can offer to enhance functions of algae, paving the way for a more efficient use of photosynthetic algal systems in the sustainable production of energy, biomass and high-value compounds.

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Abbreviations

AFM:

Atomic force microscopy

CMC:

Critical micelle concentration

CNTs:

Carbon nanotubes

DCF:

2′,7′-dichlorofluorescein

DCPIP:

2,6-dichlorophenol indophenol

DHA:

Docosahexaenoic acid

dNC:

Dextran-coated nanoceria

DOS:

Density of states

EC 50 :

Concentration inducing 50 % growth inhibition

EPA:

Eicosapentaenoic acid

F-CNTs:

CNTs labelled with FITC

FITC:

Fluorescein isothiocyanate

GA:

Gum Arabic

H2DCFDA:

2′,7′-dichlorodihydrofluorescein diacetate

HiPCo:

High-pressure carbon monoxide procedure for CNTs syntheses

HP:

Purified HiPCo CNTs

HR:

Raw HiPCo CNTs

LOEC:

Lowest observed effect concentration

m-SWCNTs:

Metallic SWCNTs

MWCNTs:

Multi-walled CNTs

NC:

Nanoceria

NO:

Nitric oxide

NOEC:

No effect concentration

NOM:

Natural organic matter

P2-P:

Purified CNTs synthesized via electric arc-discharge

P2-R:

Raw CNTs synthesized via electric arc-discharge

PAH:

Poly(allylamine hydrochloride)

PBRs:

Photobioreactors

PEG:

Polyethylene glycol

PGA:

Poly-glycolic acid

PLA:

Poly-lactic acid

PLGA:

Poly-lactic glycolic acid

PUFAs:

ω-3 polyunsaturated fatty acids

ROS:

Reactive oxygen species

RSNO:

S-nitrosothiol

SC:

Sodium cholate

SDBS:

Sodium dodecylbenzene sulfonate

SDS:

Sodium dodecylsulfonate

SEM:

Scanning electron microscopy

SG65-P:

CNTs synthesized via CoMoCAT process and purified by acidic treatment

SWCNT-NC:

SWCNT conjugated with nanoceria

SWCNTs:

Single-walled CNTs

TEM:

Transmission electron microscopy

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Acknowledgments

AM, GR, MDL, SO, TA and TL are supported by Joint Research Project 2015-2017 between CNR-Italy and RFBR-Russia (NANOBIO project). AM, ET, GR and MDL are supported by Grant of COST Action TD1102. COST (European Cooperation in Science and Technology) is Europe’s longest-running intergovernmental framework for cooperation in science and technology funding cooperative scientific projects called ‘COST Actions’. With a successful history of implementing scientific networking projects for over 40 years, COST offers scientists the opportunity to embark upon bottom-up, multidisciplinary and collaborative networks across all science and technology domains. For more information about COST, please visit www.cost.eu. ET is also supported by Academy of Finland and by Nordic Energy Research (AquaFEED project). The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript.

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Correspondence to Maya Dimova Lambreva.

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Lambreva, M.D., Lavecchia, T., Tyystjärvi, E. et al. Potential of carbon nanotubes in algal biotechnology. Photosynth Res 125, 451–471 (2015). https://doi.org/10.1007/s11120-015-0168-z

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  • DOI: https://doi.org/10.1007/s11120-015-0168-z

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