Short-term assessment of cadmium toxicity and uptake from
different types of Cd-based Quantum Dots in the model plant
Allium cepa L.

J 2018

Short-term assessment of cadmium toxicity and uptake from different types of Cd-based Quantum Dots in the model plant Allium cepa L.

MODLITBOVÁ, Pavlína, Pavel POŘÍZKA, Karel NOVOTNÝ, Jana DRBOHLAVOVÁ, Ivana CHAMRADOVÁ et. al.

Basic information

Original name

Short-term assessment of cadmium toxicity and uptake from different types of Cd-based Quantum Dots in the model plant Allium cepa L.

Authors

MODLITBOVÁ, Pavlína (203 Czech Republic), Pavel POŘÍZKA (203 Czech Republic), Karel NOVOTNÝ (203 Czech Republic, belonging to the institution), Jana DRBOHLAVOVÁ (203 Czech Republic), Ivana CHAMRADOVÁ (203 Czech Republic), Zdeněk FARKA (203 Czech Republic, guarantor, belonging to the institution), Helena ZLÁMALOVÁ-GARGOŠOVÁ (203 Czech Republic), Tea ROMIH (705 Slovenia) and Jozef KAISER (203 Czech Republic)

Edition

Ecotoxicology and Environmental Safety, Elsevier, 2018, 0147-6513

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 4.527

RIV identification code

RIV/00216224:14740/18:00102255

Organization unit

Central European Institute of Technology

DOI

http://dx.doi.org/10.1016/j.ecoenv.2018.01.044

UT WoS

000427808700004

Keywords in English

Allium cepa L.; Bioaccumulation; Cadmium; Differential pulse voltammetry; Fluorescence microscopy; Phytotoxicity; Quantum dots

Abstract

V originále

We report on the toxicity and bioaccumulation of three different types of Cd-based quantum dots (QDs), dispersed in aqueous medium, for a model plant Allium cepa L. It is believed that encapsulation of nanoparticles should reduce their toxicity and increase their stability in different environments; in this work we studied how QD encapsulation affects their phytotoxicity. Core, core/shell, and core/shell/shell QDs (CdTe, CdTe/ZnS, and CdTe/CdS/ZnS QDs capped by 2-mercaptopropionic acid) were tested and CdCl2 was used as a positive control. After 24-h and 72-h exposure, total Cd content (MCd) and bioaccumulation factors (BAFs) were determined in all parts of A. cepa plants (roots, bulb, shoot), and the total length of the root system was monitored as a toxicity end-point. Measurements of total Cd content versus free Cd2+ content (with Differential Pulse Voltammetry, DPV) in exposure media showed differences in chemical stability of the three QD types. Correspondingly, selected QDs showed different toxicity for A. cepa and different Cd bioaccumulation patterns. CdTe QDs were the most toxic; their effect was similar to CdCl2 due to the release of free Cd2+, which was confirmed by the DPV measurements. Plants exposed to CdTe QDs also bioaccumulated the most Cd among all QD exposure groups. CdTe/ZnS QDs showed no toxicity and very low bioaccumulation of Cd in A. cepa; the main source of measured Cd in the plants were QDs adsorbed on their roots, which was confirmed by fluorescence microscopy. On the contrary, CdTe/CdS/ZnS QD toxicity and bioaccumulation patterns were similar to those of CdTe QDs and pointed to unstable CdS/ZnS shells.

Links

LM2015043, research and development project

Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)

Investor: Ministry of Education, Youth and Sports of the CR

LQ1601, research and development project

Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

MODLITBOVÁ, Pavlína, Pavel POŘÍZKA, Karel NOVOTNÝ, Jana DRBOHLAVOVÁ, Ivana CHAMRADOVÁ, Zdeněk FARKA, Helena ZLÁMALOVÁ-GARGOŠOVÁ, Tea ROMIH and Jozef KAISER. Short-term assessment of cadmium toxicity and uptake from different types of Cd-based Quantum Dots in the model plant Allium cepa L. Ecotoxicology and Environmental Safety. Elsevier, 2018, vol. 153, MAY, p. 23-31. ISSN 0147-6513. Available from: https://dx.doi.org/10.1016/j.ecoenv.2018.01.044.

@article{1406195,
   author = {Modlitbová, Pavlína and Pořízka, Pavel and Novotný, Karel and Drbohlavová, Jana and Chamradová, Ivana and Farka, Zdeněk and ZlámalováandGargošová, Helena and Romih, Tea and Kaiser, Jozef},
   article_number = {MAY},
   doi = {http://dx.doi.org/10.1016/j.ecoenv.2018.01.044},
   keywords = {Allium cepa L.; Bioaccumulation; Cadmium; Differential pulse voltammetry; Fluorescence microscopy; Phytotoxicity; Quantum dots},
   language = {eng},
   issn = {0147-6513},
   journal = {Ecotoxicology and Environmental Safety},
   title = {Short-term assessment of cadmium toxicity and uptake from different types of Cd-based Quantum Dots in the model plant Allium cepa L.},
   url = {https://www.sciencedirect.com/science/article/pii/S0147651318300538},
   volume = {153},
   year = {2018}
}

TY  - JOUR
ID  - 1406195
AU  - Modlitbová, Pavlína - Pořízka, Pavel - Novotný, Karel - Drbohlavová, Jana - Chamradová, Ivana - Farka, Zdeněk - Zlámalová-Gargošová, Helena - Romih, Tea - Kaiser, Jozef
PY  - 2018
TI  - Short-term assessment of cadmium toxicity and uptake from different types of Cd-based Quantum Dots in the model plant Allium cepa L.
JF  - Ecotoxicology and Environmental Safety
VL  - 153
IS  - MAY
SP  - 23-31
EP  - 23-31
PB  - Elsevier
SN  - 01476513
KW  - Allium cepa L.
KW  - Bioaccumulation
KW  - Cadmium
KW  - Differential pulse voltammetry
KW  - Fluorescence microscopy
KW  - Phytotoxicity
KW  - Quantum dots
UR  - https://www.sciencedirect.com/science/article/pii/S0147651318300538
N2  - We report on the toxicity and bioaccumulation of three different types of Cd-based quantum dots (QDs), dispersed in aqueous medium, for a model plant Allium cepa L. It is believed that encapsulation of nanoparticles should reduce their toxicity and increase their stability in different environments; in this work we studied how QD encapsulation affects their phytotoxicity. Core, core/shell, and core/shell/shell QDs (CdTe, CdTe/ZnS, and CdTe/CdS/ZnS QDs capped by 2-mercaptopropionic acid) were tested and CdCl2 was used as a positive control. After 24-h and 72-h exposure, total Cd content (MCd) and bioaccumulation factors (BAFs) were determined in all parts of A. cepa plants (roots, bulb, shoot), and the total length of the root system was monitored as a toxicity end-point. Measurements of total Cd content versus free Cd2+ content (with Differential Pulse Voltammetry, DPV) in exposure media showed differences in chemical stability of the three QD types. Correspondingly, selected QDs showed different toxicity for A. cepa and different Cd bioaccumulation patterns. CdTe QDs were the most toxic; their effect was similar to CdCl2 due to the release of free Cd2+, which was confirmed by the DPV measurements. Plants exposed to CdTe QDs also bioaccumulated the most Cd among all QD exposure groups. CdTe/ZnS QDs showed no toxicity and very low bioaccumulation of Cd in A. cepa; the main source of measured Cd in the plants were QDs adsorbed on their roots, which was confirmed by fluorescence microscopy. On the contrary, CdTe/CdS/ZnS QD toxicity and bioaccumulation patterns were similar to those of CdTe QDs and pointed to unstable CdS/ZnS shells.
ER  -

MODLITBOVÁ, Pavlína, Pavel POŘÍZKA, Karel NOVOTNÝ, Jana DRBOHLAVOVÁ, Ivana CHAMRADOVÁ, Zdeněk FARKA, Helena ZLÁMALOVÁ-GARGOŠOVÁ, Tea ROMIH and Jozef KAISER. Short-term assessment of cadmium toxicity and uptake from different types of Cd-based Quantum Dots in the model plant Allium cepa L. \textit{Ecotoxicology and Environmental Safety}. Elsevier, 2018, vol.~153, MAY, p.~23-31. ISSN~0147-6513. Available from: https://dx.doi.org/10.1016/j.ecoenv.2018.01.044.

Detailed Information on Publication Record