Correction to: Effects of zinc oxide nanoparticles on arsenic stress in rice (Oryza sativa L.): germination, early growth, and arsenic uptake

Heavy metals (HMs) are toxic elements which contaminate the water bodies in developing countries because of their excessive discharge from industrial zones. Rice (Oryza sativa L) crops are submerged for a longer period of time in water, so irrigation with HMs polluted water possesses toxic effects on plant growth. This study was initiated to observe the synergistic effect of bacteria (Bacillus cereus and Lysinibacillus macroides) and zinc oxide nanoparticles (ZnO NPs) (5, 10, 15, 20 and 25 mg/L) on the rice that were grown in HMs contaminated water. Current findings have revealed that bacteria, along with ZnO NPs at lower concentration, showed maximum removal of HMs from polluted water at pH 8 (90 min) as compared with higher concentrations. Seeds primed with bacteria grown in HM polluted water containing ZnO NPs (5 mg/L) showed reduced uptake of HMs in root, shoot and leaf, thus resulting in increased plant growth. Furthermore, their combined effects also reduced the bioaccumulation index and metallothionine (MTs) content and enhanced the tolerance index of plants. This study suggested that synergistic treatment of bacteria with lower concentrations of ZnO NPs helped plants to reduce heavy metal toxicity, especially Pb and Cu, and enhanced plant growth.

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Elucidating the Effects of Cerium Oxide Nanoparticles and Zinc Oxide Nanoparticles on Arsenic Uptake and Speciation in Rice (Oryza sativa) in a Hydroponic System

Environmental Science & Technology ◽

10.1021/acs.est.8b01664 ◽

2018 ◽

Vol 52 (17) ◽

pp. 10040-10047 ◽

Cited By ~ 22

Author(s):

Xiaoxuan Wang ◽

Wenjie Sun ◽

Sha Zhang ◽

Hamidreza Sharifan ◽

Xingmao Ma

Keyword(s):

Zinc Oxide ◽

Oryza Sativa ◽

Cerium Oxide ◽

Zinc Oxide Nanoparticles ◽

Cerium Oxide Nanoparticles ◽

Oxide Nanoparticles ◽

Hydroponic System ◽

Arsenic Uptake

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Phytotoxicity and bioaccumulation of zinc oxide nanoparticles in rice (Oryza sativa L.)

Plant Physiology and Biochemistry ◽

10.1016/j.plaphy.2018.08.019 ◽

2018 ◽

Vol 130 ◽

pp. 604-612 ◽

Cited By ~ 14

Author(s):

Jing Chen ◽

Runzhi Dou ◽

Zhongzhou Yang ◽

Tingting You ◽

Xiang Gao ◽

...

Keyword(s):

Zinc Oxide ◽

Oryza Sativa ◽

Zinc Oxide Nanoparticles ◽

Oryza Sativa L ◽

Oxide Nanoparticles

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Green magnesium oxide nanoparticles-based modulation of cellular oxidative repair mechanisms to reduce arsenic uptake and translocation in rice (Oryza sativa L.) plants

Environmental Pollution ◽

10.1016/j.envpol.2021.117785 ◽

2021 ◽

pp. 117785

Author(s):

Temoor Ahmed ◽

Muhammad Noman ◽

Natasha Manzoor ◽

Muhammad Shahid ◽

Khalid Mahmud Hussaini ◽

...

Keyword(s):

Oryza Sativa ◽

Magnesium Oxide ◽

Oryza Sativa L ◽

Oxide Nanoparticles ◽

Arsenic Uptake ◽

Magnesium Oxide Nanoparticles ◽

Repair Mechanisms

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Zinc oxide nanoparticles alleviate the arsenic toxicity and decrease the accumulation of arsenic in rice (Oryza sativa L.)

BMC Plant Biology ◽

10.1186/s12870-021-02929-3 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Shiwei Yan ◽

Fan Wu ◽

Song Zhou ◽

Jianhao Yang ◽

Xianjin Tang ◽

...

Keyword(s):

Zinc Oxide ◽

Zinc Oxide Nanoparticles ◽

Oryza Sativa L ◽

Dry Weight ◽

Oxide Nanoparticles ◽

Rice Seedlings ◽

Nano Zinc Oxide ◽

Class 1 ◽

Nano Zinc ◽

Different Levels

Abstract Background Rice is particularly effective, compared to other cereals, at accumulating arsenic (As), a nonthreshold, class 1 human carcinogen in shoot and grain. Nano-zinc oxide is gradually used in agricultural production due to its adsorption capacity and as a nutrient element. An experiment was performed to explore the effects of zinc oxide nanoparticles (nZnO) on arsenic (As) toxicity and bioaccumulation in rice. Rice seedlings were treated with different levels of nZnO (0, 10, 20, 50, 100 mg/L) and As (0, and 2 mg/L) for 7 days. Results The research showed that 2 mg/L of As treatment represented a stress condition, which was evidenced by phenotypic images, seedling dry weight, chlorophyll, and antioxidant enzyme activity of rice shoot. The addition of nZnO (10–100 mg/L) enhanced the growth and photosynthesis of rice seedlings. As concentrations in the shoots and roots were decreased by a maximum of 40.7 and 31.6% compared to the control, respectively. Arsenite [As (III)] was the main species in both roots (98.5–99.5%) and shoots (95.0–99.6%) when exposed to different treatments. Phytochelatins (PCs) content up-regulated in the roots induced more As (III)-PC to be complexed and reduced As (III) mobility for transport to shoots by nZnO addition. Conclusion The results confirmed that nZnO could improve rice growth and decrease As accumulation in shoots, and it performs best at a concentration of 100 mg/L.

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Zinc Oxide Nanoparticles Alleviate The Arsenic Toxicity and Decrease The Accumulation of Arsenic in Rice(Oryza Sativa L.)

10.21203/rs.3.rs-134546/v1 ◽

2021 ◽

Author(s):

Shiwei Yan ◽

Fan Wu ◽

Song Zhou ◽

Jianhao Yang ◽

Xianjin Tang ◽

...

Keyword(s):

Zinc Oxide ◽

Zinc Oxide Nanoparticles ◽

Oryza Sativa L ◽

Dry Weight ◽

Oxide Nanoparticles ◽

Rice Seedlings ◽

Nano Zinc Oxide ◽

Class 1 ◽

Nano Zinc ◽

Different Levels

Abstract Background: Rice is particularly effective, compared to other cereals, at accumulating arsenic(As), a nonthreshold, class 1 human carcinogen in shoot and grain. Nano-zinc oxide is gradually used in agricultural production due to its adsorption capacity and as a nutrient element. An experiment was performed to explore the effects of zinc oxide nanoparticles (nZnO) on arsenic (As) toxicity and bioaccumulation in rice. Rice seedlings were treated with different levels of nZnO (0, 10, 20, 50, 100 mg/L) and As (0, and 2 mg/L) for seven days. Results:The research showed that 2 mg/L of As treatment represented a stress condition, which was evidenced by phenotypic images, seedling dry weight, chlorophyll, and antioxidant enzyme activity of rice shoot. The addition of nZnO (10-100 mg/L) enhanced the growth and photosynthesis of rice seedlings. As concentrations in the shoots and roots were decreased by a maximum of 40.7% and 31.6% compared to the control, respectively. Arsenite [As(III)] was the main species in both roots (98.5-99.5%) and shoots (95.0-99.6%) when exposed to different treatments. Phytochelatins (PCs) content up-regulated in the roots induced more As(III)-PC complexed and reduced As(III) mobility for transport to shoots by nZnO addition. Conclusion:The results confirmed that nZnO could improve rice growth and decrease As accumulation in shoots, and it performs best at a concentration of 100mg/L.

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Modulation of Cellular Redox Status and Antioxidant Defense System after Synergistic Application of Zinc Oxide Nanoparticles and Salicylic Acid in Rice (Oryza sativa) Plant under Arsenic Stress

Plants ◽

10.3390/plants10112254 ◽

2021 ◽

Vol 10 (11) ◽

pp. 2254

Author(s):

Mohammad Faizan ◽

Shafaque Sehar ◽

Vishnu D. Rajput ◽

Ahmad Faraz ◽

Shadma Afzal ◽

...

Keyword(s):

Oxidative Stress ◽

Electron Microscopy ◽

Zinc Oxide ◽

Salicylic Acid ◽

Oryza Sativa ◽

Zinc Oxide Nanoparticles ◽

Total Soluble Protein ◽

Oxide Nanoparticles ◽

Rice Plants ◽

As Stress

The objective of this research was to determine the effect of zinc oxide nanoparticles (ZnONPs) and/or salicylic acid (SA) under arsenic (As) stress on rice (Oryza sativa). ZnONPs are analyzed for various techniques viz., X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). All of these tests established that ZnONPs are pure with no internal defects, and can be potentially used in plant applications. Hence, we further investigated for better understanding of the underlying mechanisms and the extent of ZnONPs and SA induced oxidative stress damages. More restricted plant growth, gas exchange indices, significant reduction in the SPAD index and maximum quantum yield (Fv/Fm) and brutal decline in protein content were noticed in As-applied plants. In contrast, foliar fertigation of ZnONPs and/or SA to As-stressed rice plants lessens the oxidative stress, as exposed by subordinate levels of reactive oxygen species (ROS) synthesis. Improved enzymatic activities of catalase (CAT), peroxidase (POX), and superoxide dismutase (SOD), proline and total soluble protein contents under ZnONPs and SA treatment plays an excellent role in the regulation of various transcriptional pathways participated in oxidative stress tolerance. Higher content of nitrogen (N; 13%), phosphorus (P; 10%), potassium (K; 13%), zinc (Zn; 68%), manganese (Mn; 14%), and iron (Fe; 19) in ZnONPs and SA treated plants under As-stress, thus hampered growth and photosynthetic efficiency of rice plants. Our findings suggest that toxicity of As was conquering by the application of ZnONPs and SA in rice plants.

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