Zinc Fertilizers Modified the Formation and Properties of Iron Plaque and Arsenic Accumulation in Rice (<i>Oryza sativa L.</i>) in a Life Cycle Study

Wang, Xiaoxuan; Jiang, Jiechao; Dou, Fugen; Li, Xiufen; Sun, Wenjie; Ma, Xingmao

doi:10.1021/acs.est.2c01767

Cited by 23 publications

(7 citation statements)

References 54 publications

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“…The negative charge groups on the surface of iron plaque, such as OH – , provided more sites for Cu 2+ /Cu + adsorption. The anions, such as phosphate and sulfate, may coprecipitate with Cu 2+ /Cu + on the iron plaque. , …”

Section: Resultsmentioning

confidence: 99%

“…The anions, such as phosphate and sulfate, may coprecipitate with Cu 2+ /Cu + on the iron plaque. 12,62 The critical threshold of Cu toxicity in the leaves of most crop species is 30 mg kg −1 . 63 However, the Cu concentration in the shoots under PC (48.4 mg kg −1 ) and under HC (53.7 mg kg −1 ) may have caused physiological toxicity.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Oxygen Nanobubble-Loaded Biochars Mitigate Copper Transfer from Copper-Contaminated Soil to Rice and Improve Rice Growth

Chu

Sha

Feng

et al. 2023

ACS Sustainable Chem. Eng.

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Copper (Cu)-contaminated paddy soil has caused substantial concerns for human health through biomagnification in the soil–rice–human chain. In this study, oxygen nanobubble-loaded biochars (ONBC), including pyrochars (NPC) and hydrochars (NHC), were used to amend Cu-contaminated paddy soils and reduce rice Cu toxicity. The ONBC amendment improved the rhizospheric redox potential and dissolved oxygen concentration via slow, continuous oxygen release, promoting root iron plaque formation and effectively inhibiting root Cu influx. Moreover, the ONBC amendment improved soil microbial diversity. The abundance of bacterial genes involved in cytosolic Cu complexation and Cu export to the periplasm space for Cu stabilization markedly improved. The sequestered Cu in root iron plaque and soil bacteria inhibited Cu influx into the shoots to avoid Cu overaccumulation in the edible parts. This was reflected by the Cu content decreasing by 1.91-fold and 2.38-fold in shoots under NPC and NHC treatments, respectively. Furthermore, the improved oxygen-enriched rhizosphere environment via the ONBC amendment promoted root activity and the abundance of bacterial genes involved in nutrients mineralization, further promoting shoot biomass by 1.46-fold and 2.29-fold under NPC and NHC treatments, respectively. This study proposes an environmentally friendly strategy to mitigate Cu transfer from soil to crops and improve crop productivity.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Oxygen Nanobubble-Loaded Biochars Mitigate Copper Transfer from Copper-Contaminated Soil to Rice and Improve Rice Growth

Chu

Sha

Feng

et al. 2023

ACS Sustainable Chem. Eng.

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“…NaAsO 2 was obtained from Sigma Aldrich (St. Louis, MO, USA). Detailed characterization of these nanoparticles and bulk particles has been reported in our previous publications (Wang et al, 2021;Wang et al, 2022aWang et al, , 2022b. 2.2 Experimental design, greenhouse management, and plant and soil sampling…”

Section: Background Soil Properties and Chemicalsmentioning

confidence: 99%

“…In previous studies, we have reported that nanoparticle amendments and their ionic and bulk counterparts have remarkable impacts on soil pH, redox potential (Eh), soil organic carbon (SOC), cation exchange capacity (CEC), plant available arsenic, and iron plaque in soils at different growth stages of rice ( Wang et al., 2021 ; Wang et al., 2022a , 2022b ). In an effort to address the effectiveness and risks of NPs to food safety, our current research aimed to investigate the impact of three agriculturally important nanoparticles including zinc oxide (ZnO), copper oxide (CuO), and silicon dioxide (SiO 2 ) nanoparticles (NPs), their ionic counterparts, and bulk particles on rice growth, grain yield, and arsenic accumulation under arsenic contamination.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of nanomaterials and their counterparts in improving rice growth and yield under arsenic contamination

Li,

Wang,

et al. 2024

Front. Plant Sci.

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Arsenic (As) pollution in rice (Oryza sativa L.), a staple food for over 3.5 billion people, is a global problem. Mixed effects of Zn, Cu, and Si amendments on plant growth and yield, including in the presence of As pollution have been reported in previous studies. To better investigate the effectiveness of these amendments on rice growth, yield, and As accumulation, we conducted a rice greenhouse experiment with 11 treatments, including control pots with and without As contamination and pots with amendments of ZnO, CuO, and SiO2 nanoparticles (ZnO NPs, CuO NPs, and SiO2 NPs), their ionic counterparts (ZnSO4, CuSO4, and Na2SiO3), and bulk particles (ZnO BPs, CuO BPs, and SiO2 BPs). Compared with the background soil, the treatment of adding As decreased rice plant height, panicle number, and grain yield by 16.5%, 50%, and 85.7%, respectively, but significantly increased the As accumulation in milled rice grains by 3.2 times. Under As contamination, the application of Zn amendments increased rice grain yield by 4.6–7.3 times; among the three Zn amendments, ZnSO4 performed best by fully recovering grain yield to the background level and significantly reducing grain AsIII/total As ratio by 46.9%. Under As contamination, the application of Cu amendments increased grain yield by 3.8–5.6 times; all three Cu amendments significantly reduced grain AsIII/total As ratio by 20.2–65.6%. The results reveal that Zn and Cu amendments could promote rice yield and prevent As accumulation in rice grains under As contamination. Despite the observed reduction in As toxicity by the tested NPs, they do not offer more advantages over their ionic counterparts and bulk particles in promoting rice growth under As contamination. Future field research using a broader range of rice varieties, investigating various As concentrations, and encompassing diverse climate conditions will be necessary to validate our findings in achieving more extensive understanding of effective management of arsenic contaminated rice field.

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“…Moreover, nanomaterials (such as nanographene oxide 40 , nZnO (refs. 41,42 ), nFe 2 O 3 (ref. 5 ) and nAg (ref.…”

Section: Nature Foodmentioning

confidence: 99%

Cost–benefit analysis of nanofertilizers and nanopesticides emphasizes the need to improve the efficiency of nanoformulations for widescale adoption

Zhou

Meng

et al. 2022

Nat Food

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Zinc Fertilizers Modified the Formation and Properties of Iron Plaque and Arsenic Accumulation in Rice (Oryza sativa L.) in a Life Cycle Study

Cited by 23 publications

References 54 publications

Oxygen Nanobubble-Loaded Biochars Mitigate Copper Transfer from Copper-Contaminated Soil to Rice and Improve Rice Growth

Oxygen Nanobubble-Loaded Biochars Mitigate Copper Transfer from Copper-Contaminated Soil to Rice and Improve Rice Growth

Effectiveness of nanomaterials and their counterparts in improving rice growth and yield under arsenic contamination

Cost–benefit analysis of nanofertilizers and nanopesticides emphasizes the need to improve the efficiency of nanoformulations for widescale adoption

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