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@article{1455677,
author = {Balážová, Ľudmila and Babula, Petr and Baláž, Matej and Bačkorová, Miriam and Bujňáková, Zdenka and Briančin, Jaroslav and Kurmanbayeva, Assylay and Sagi, Moshe},
article_location = {Paris},
article_number = {SEP 2018},
doi = {http://dx.doi.org/10.1016/j.plaphy.2018.06.013},
keywords = {Salicornia; ZnO nanoparticles; Oxidative stress; Halophyte; Phytotoxicity},
language = {eng},
issn = {0981-9428},
journal = {Plant Physiology and Biochemistry},
title = {Zinc oxide nanoparticles phytotoxicity on halophyte from genus Salicornia},
volume = {130},
year = {2018}
}
TY - JOUR
ID - 1455677
AU - Balážová, Ľudmila - Babula, Petr - Baláž, Matej - Bačkorová, Miriam - Bujňáková, Zdenka - Briančin, Jaroslav - Kurmanbayeva, Assylay - Sagi, Moshe
PY - 2018
TI - Zinc oxide nanoparticles phytotoxicity on halophyte from genus Salicornia
JF - Plant Physiology and Biochemistry
VL - 130
IS - SEP 2018
SP - 30-42
EP - 30-42
PB - Elsevier
SN - 09819428
KW - Salicornia
KW - ZnO nanoparticles
KW - Oxidative stress
KW - Halophyte
KW - Phytotoxicity
N2 - This study deals with the effect of zinc oxide nanoparticles (ZnO NPs) on halophyte from the genus Salicornia. The presence of ZnO nanoparticles (100 and 1000 mg/L) in the solid culture medium resulted in the negative effects on plant growth in the concentration-dependent manner. The shoot length of plant cultivated with 1000 mg/L ZnO NPs decreased by more than 50% compared to non-treated plants. The phytotoxicity was associated with the release of free zinc(II) ions, which was determined by atomic absorption spectroscopy and fluorescence microscopy. Another mechanism involved in ZnO NPs phytotoxicity was closely connected with generation of reactive oxygen species (ROS), which was accompanied by changes in activities and amounts of antioxidant enzymes. Histochemical evaluation showed that ROS were present also in the shoot of plant, which was not in direct contact with NPs. The reduction of activity and amount of antioxidant enzymes such as gamma-ESC, GR, SOD, PER, APX and higher concentration of ROS lead to lipid peroxidation, the latter being almost 3 times higher for the plant treated with 1000 mg/L NPs compared to control. The misbalance in zinc homeostasis and creation of ROS with subsequent oxidative stress led to the initiation of processes of programmed cell death, which was demonstrated by the loss of mitochondrial potential and increase of intracellular calcium (II) ions. Despite halophytes exhibit higher stress resistance than glycophytes, they are prone to negative changes if incubated in the environment containing ZnO nanoparticles.
ER -
BALÁŽOVÁ, Ľudmila, Petr BABULA, Matej BALÁŽ, Miriam BAČKOROVÁ, Zdenka BUJŇÁKOVÁ, Jaroslav BRIANČIN, Assylay KURMANBAYEVA and Moshe SAGI. Zinc oxide nanoparticles phytotoxicity on halophyte from genus Salicornia. \textit{Plant Physiology and Biochemistry}. Paris: Elsevier, 2018, vol.~130, SEP 2018, p.~30-42. ISSN~0981-9428. Available from: https://dx.doi.org/10.1016/j.plaphy.2018.06.013.
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