Dynamics of cadmium and arsenic in the soil-rice system: Insights from different forms manganese fertilizer application.

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Title: Dynamics of cadmium and arsenic in the soil-rice system: Insights from different forms manganese fertilizer application.
Authors: Yan, Tianyi1,2 (AUTHOR), Zhang, Quan1 (AUTHOR) quanzhang@isa.ac.cn, Chen, Haifei3 (AUTHOR), Zhou, Jingheng1,2 (AUTHOR), Wen, Qiren3 (AUTHOR), Li, Bo1 (AUTHOR), Zhu, Qihong1 (AUTHOR), Huang, Daoyou1 (AUTHOR), Xu, Chao1 (AUTHOR), Zhu, Hanhua1 (AUTHOR) hhzhu@isa.ac.cn
Source: Journal of Environmental Sciences (Elsevier). Feb2026, Vol. 160, p253-263. 11p.
Subject Terms: *Cadmium, *Arsenic, *Bioavailability, *Manganese, *Environmental risk, Rice processing, Gene expression, Transport theory
Abstract: • Mn fertilizers increased soil pH, promoted the transformation of soil Cd/As forms, and reduced Cd/As bioavailability. • The Fe-Mn plaques on the root surfaces formed by Mn fertilizers prevented Cd from entering rice. • Mn application upregulated OsHMA3, OsABCC1 and OsLsi2 expression, decreasing Cd and increasing As transport in rice. • MnO 2 , MnSO 4 , and MnCO 3 treatments reduced Cd content in rice grains by up to 27.6 %, 30.2 %, and 28.1 %, respectively, but increased As content. Manganese (Mn) is widely used to control cadmium (Cd) and arsenic (As) uptake by rice, but the effects of different Mn forms and concentrations on Cd/As movement in the soil-rice system are unclear. The study investigated the mechanisms by which three Mn compounds affected the accumulation of Cd/As in rice under different application rates. MnO 2 , MnSO 4 , and MnCO 3 treatments significantly reduced grains Cd levels by 27.6 %, 30.2 %, and 28.1 %, respectively, while As levels were less consistently affected. Three forms of Mn fertilizers enhanced the conversion of exchangeable to carbonate bound-Cd, which closely related to the increase of soil pH. MnO 2 and MnCO 3 reduced Cd translocation by increasing Cd/As adsorption on iron plaques, and MnSO 4 and MnCO 3 decreased Cd translocation by boosting root SOD and Cys levels. Transcriptome analysis revealed that Mn2+ upregulated genes involved in the antioxidant defense system, limited Cd transport by enhancing OsABCC1 and OsHMA3 expression, and promoted As translocation by increasing OsLsi2 expression. Overall, different forms of Mn fertilizers effectively reduced Cd toxicity by fixing Cd in soil carbonate and iron plaques, and restricting Cd transport. Although Mn fertilizers reduced As availability in soil and affected As absorption in rice, they have certain limitations and need to be further explored. These findings reveal the mechanism by which different forms of Mn regulate the fixation and migration behavior of Cd and As, providing new ideas and theoretical basis for reducing the environmental risk of Cd and As. [Display omitted] [ABSTRACT FROM AUTHOR]
Copyright of Journal of Environmental Sciences (Elsevier) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Items – Name: Title
  Label: Title
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  Data: Dynamics of cadmium and arsenic in the soil-rice system: Insights from different forms manganese fertilizer application.
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  Data: <searchLink fieldCode="AR" term="%22Yan%2C+Tianyi%22">Yan, Tianyi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Quan%22">Zhang, Quan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> quanzhang@isa.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Haifei%22">Chen, Haifei</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Jingheng%22">Zhou, Jingheng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wen%2C+Qiren%22">Wen, Qiren</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Bo%22">Li, Bo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Qihong%22">Zhu, Qihong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Daoyou%22">Huang, Daoyou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Chao%22">Xu, Chao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Hanhua%22">Zhu, Hanhua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hhzhu@isa.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Sciences+%28Elsevier%29%22">Journal of Environmental Sciences (Elsevier)</searchLink>. Feb2026, Vol. 160, p253-263. 11p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Cadmium%22">Cadmium</searchLink><br />*<searchLink fieldCode="DE" term="%22Arsenic%22">Arsenic</searchLink><br />*<searchLink fieldCode="DE" term="%22Bioavailability%22">Bioavailability</searchLink><br />*<searchLink fieldCode="DE" term="%22Manganese%22">Manganese</searchLink><br />*<searchLink fieldCode="DE" term="%22Environmental+risk%22">Environmental risk</searchLink><br /><searchLink fieldCode="DE" term="%22Rice+processing%22">Rice processing</searchLink><br /><searchLink fieldCode="DE" term="%22Gene+expression%22">Gene expression</searchLink><br /><searchLink fieldCode="DE" term="%22Transport+theory%22">Transport theory</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Mn fertilizers increased soil pH, promoted the transformation of soil Cd/As forms, and reduced Cd/As bioavailability. • The Fe-Mn plaques on the root surfaces formed by Mn fertilizers prevented Cd from entering rice. • Mn application upregulated OsHMA3, OsABCC1 and OsLsi2 expression, decreasing Cd and increasing As transport in rice. • MnO 2 , MnSO 4 , and MnCO 3 treatments reduced Cd content in rice grains by up to 27.6 %, 30.2 %, and 28.1 %, respectively, but increased As content. Manganese (Mn) is widely used to control cadmium (Cd) and arsenic (As) uptake by rice, but the effects of different Mn forms and concentrations on Cd/As movement in the soil-rice system are unclear. The study investigated the mechanisms by which three Mn compounds affected the accumulation of Cd/As in rice under different application rates. MnO 2 , MnSO 4 , and MnCO 3 treatments significantly reduced grains Cd levels by 27.6 %, 30.2 %, and 28.1 %, respectively, while As levels were less consistently affected. Three forms of Mn fertilizers enhanced the conversion of exchangeable to carbonate bound-Cd, which closely related to the increase of soil pH. MnO 2 and MnCO 3 reduced Cd translocation by increasing Cd/As adsorption on iron plaques, and MnSO 4 and MnCO 3 decreased Cd translocation by boosting root SOD and Cys levels. Transcriptome analysis revealed that Mn2+ upregulated genes involved in the antioxidant defense system, limited Cd transport by enhancing OsABCC1 and OsHMA3 expression, and promoted As translocation by increasing OsLsi2 expression. Overall, different forms of Mn fertilizers effectively reduced Cd toxicity by fixing Cd in soil carbonate and iron plaques, and restricting Cd transport. Although Mn fertilizers reduced As availability in soil and affected As absorption in rice, they have certain limitations and need to be further explored. These findings reveal the mechanism by which different forms of Mn regulate the fixation and migration behavior of Cd and As, providing new ideas and theoretical basis for reducing the environmental risk of Cd and As. [Display omitted] [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Environmental Sciences (Elsevier) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.jes.2025.03.056
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 253
    Subjects:
      – SubjectFull: Cadmium
        Type: general
      – SubjectFull: Arsenic
        Type: general
      – SubjectFull: Bioavailability
        Type: general
      – SubjectFull: Manganese
        Type: general
      – SubjectFull: Environmental risk
        Type: general
      – SubjectFull: Rice processing
        Type: general
      – SubjectFull: Gene expression
        Type: general
      – SubjectFull: Transport theory
        Type: general
    Titles:
      – TitleFull: Dynamics of cadmium and arsenic in the soil-rice system: Insights from different forms manganese fertilizer application.
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            NameFull: Yan, Tianyi
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            NameFull: Zhang, Quan
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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