Growing rice (Oryza sativa) aerobically reduces phytotoxicity, uptake, and transformation of CeO2 nanoparticles

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Growing rice (Oryza sativa) aerobically reduces phytotoxicity, uptake, and transformation of CeO2 nanoparticles. / Zhang, Peng; Guo, Zhiling; Monikh, Fazel Abdolahpur; Lynch, Iseult; Valsami-Jones, Eugenia; Zhang, Zhiyong.

In: Environmental Science and Technology, Vol. 55, No. 13, 06.07.2021, p. 8654-8664.

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@article{e29e13d2a9034c0cae5e4d54d0e2906f,
title = "Growing rice (Oryza sativa) aerobically reduces phytotoxicity, uptake, and transformation of CeO2 nanoparticles",
abstract = "This study compared the impact and uptake of root-administered CeO2 nanoparticles (NPs) in rice growing under flooded and aerobic soil conditions, which are two water regimes commonly used for rice cultivation. CeO2 NPs at 100 mg/kg improved photosynthesis and plant growth by reducing the oxidative damage and enhancing plant tolerance to stress, while a higher concentration (500 mg/kg) of CeO2 NPs negatively affected plant growth. More significant effects were observed under the flooded condition than under the aerobic condition. CeO2 NPs of 100 and 500 mg/kg resulted in 78% and 70% higher accumulation of Ce in shoots under the flooded condition compared to the aerobic condition. CeO2 NPs partially transformed to Ce(III) species in soils and plants under both conditions. A higher extent of transformation under the flooded condition, which was partly attributed to the lower soil pH and redox potential under the flooded condition, leads to higher plant uptake of Ce. A higher extent of transformation in rhizosphere soil was observed. A higher plant transpiration rate (TR) under flooded conditions resulted in a higher accumulation of CeO2 species in shoots. This study, for the first time, reported that water regimes influenced the biotransformation of CeO2 NPs and their uptake and impact in rice plants.",
keywords = "CeO2 nanoparticles, plant, transformation, uptake, water regime, rhizosphere",
author = "Peng Zhang and Zhiling Guo and Monikh, {Fazel Abdolahpur} and Iseult Lynch and Eugenia Valsami-Jones and Zhiyong Zhang",
year = "2021",
month = jul,
day = "6",
doi = "10.1021/acs.est.0c08813",
language = "English",
volume = "55",
pages = "8654--8664",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "13",

}

RIS

TY - JOUR

T1 - Growing rice (Oryza sativa) aerobically reduces phytotoxicity, uptake, and transformation of CeO2 nanoparticles

AU - Zhang, Peng

AU - Guo, Zhiling

AU - Monikh, Fazel Abdolahpur

AU - Lynch, Iseult

AU - Valsami-Jones, Eugenia

AU - Zhang, Zhiyong

PY - 2021/7/6

Y1 - 2021/7/6

N2 - This study compared the impact and uptake of root-administered CeO2 nanoparticles (NPs) in rice growing under flooded and aerobic soil conditions, which are two water regimes commonly used for rice cultivation. CeO2 NPs at 100 mg/kg improved photosynthesis and plant growth by reducing the oxidative damage and enhancing plant tolerance to stress, while a higher concentration (500 mg/kg) of CeO2 NPs negatively affected plant growth. More significant effects were observed under the flooded condition than under the aerobic condition. CeO2 NPs of 100 and 500 mg/kg resulted in 78% and 70% higher accumulation of Ce in shoots under the flooded condition compared to the aerobic condition. CeO2 NPs partially transformed to Ce(III) species in soils and plants under both conditions. A higher extent of transformation under the flooded condition, which was partly attributed to the lower soil pH and redox potential under the flooded condition, leads to higher plant uptake of Ce. A higher extent of transformation in rhizosphere soil was observed. A higher plant transpiration rate (TR) under flooded conditions resulted in a higher accumulation of CeO2 species in shoots. This study, for the first time, reported that water regimes influenced the biotransformation of CeO2 NPs and their uptake and impact in rice plants.

AB - This study compared the impact and uptake of root-administered CeO2 nanoparticles (NPs) in rice growing under flooded and aerobic soil conditions, which are two water regimes commonly used for rice cultivation. CeO2 NPs at 100 mg/kg improved photosynthesis and plant growth by reducing the oxidative damage and enhancing plant tolerance to stress, while a higher concentration (500 mg/kg) of CeO2 NPs negatively affected plant growth. More significant effects were observed under the flooded condition than under the aerobic condition. CeO2 NPs of 100 and 500 mg/kg resulted in 78% and 70% higher accumulation of Ce in shoots under the flooded condition compared to the aerobic condition. CeO2 NPs partially transformed to Ce(III) species in soils and plants under both conditions. A higher extent of transformation under the flooded condition, which was partly attributed to the lower soil pH and redox potential under the flooded condition, leads to higher plant uptake of Ce. A higher extent of transformation in rhizosphere soil was observed. A higher plant transpiration rate (TR) under flooded conditions resulted in a higher accumulation of CeO2 species in shoots. This study, for the first time, reported that water regimes influenced the biotransformation of CeO2 NPs and their uptake and impact in rice plants.

KW - CeO2 nanoparticles

KW - plant

KW - transformation

KW - uptake

KW - water regime

KW - rhizosphere

U2 - 10.1021/acs.est.0c08813

DO - 10.1021/acs.est.0c08813

M3 - Article

C2 - 34156836

VL - 55

SP - 8654

EP - 8664

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 13

ER -