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Goethite modified biochar simultaneously mitigates the arsenic and cadmium accumulation in paddy rice (Oryza sativa) L.
Environ Res. 2022 04 15; 206:112238.ER

Abstract

Cadmium (Cd) and arsenic (As) contamination of paddy soils is a serious global issue because of the opposite geochemical behavior of Cd and As in paddy soils. Rice plant (Oryza sativa L.) cultivation in Cd- and As- contaminated paddy soil is regarded as one of the main dietary cause of Cd and As entry in human beings. This study aimed to determine the impact of goethite-modified biochar (GB) on bioavailability of both Cd and As in Cd- and As- polluted paddy soil. Contrary to control and biochar (BC) amendments, the application of GB amendments significantly impeded the accumulation of both Cd and As in rice plants. The results confirmed an obvious reduction in Cd and As content of rice grains by 85% and 77%, respectively after soil supplementation with GB 2% amendment. BC 3% application minimized the Cd uptake by 59% in the rice grains as compared to the control but exhibited a little impact on As accumulation in rice grains. Sequential extraction results displayed an increase in immobile Cd and As fractions of the soil by decreasing the bioavailable fractions of both elements after GB treatments. Fe-plaque formation on the root surfaces was significantly variable (P ˂ 0.05) among all the amendments. GB 2% treatment significantly increased the Fe content (10 g kg-1) of root Fe-plaque by 48%, which ultimately enhanced the sequestration of Cd and As by Fe-plaque and minimized the transport of Cd and As in rice plants. Moreover, GB treatments significantly changed the relative abundance of the microbial community in the rice rhizosphere and minimized the metal(loid)s mobility in the soil. The relative abundance of Acidobacteria, Firmicutes and Verrucomicrobia increased with GB 2% treatment while those of Bacteroidetes and Choloroflexi decreased. Our findings confirmed improvement in the rice grains quality regarding enhanced amino acid contents with GB application. Overall, the results of this study demonstrated that GB amendment simultaneously alleviated the Cd and As concentrations in edible parts of rice plant and provided a new valuable method to protect the public health by effectively remediating the co-occurrence of Cd and As in paddy soils.

Authors+Show Affiliations

College of Land Science and Technology, China Agricultural University, Beijing, China; Department of Environmental Sciences and Engineering, Government College University Faisalabad, Pakistan.Department of Botany, Government College University Faisalabad, Pakistan.College of Land Science and Technology, China Agricultural University, Beijing, China.College of Land Science and Technology, China Agricultural University, Beijing, China.College of Land Science and Technology, China Agricultural University, Beijing, China.College of Land Science and Technology, China Agricultural University, Beijing, China. Electronic address: jyshang@cau.edu.cn.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

34688646

Citation

Irshad, Muhammad Kashif, et al. "Goethite Modified Biochar Simultaneously Mitigates the Arsenic and Cadmium Accumulation in Paddy Rice (Oryza Sativa) L." Environmental Research, vol. 206, 2022, p. 112238.
Irshad MK, Noman A, Wang Y, et al. Goethite modified biochar simultaneously mitigates the arsenic and cadmium accumulation in paddy rice (Oryza sativa) L. Environ Res. 2022;206:112238.
Irshad, M. K., Noman, A., Wang, Y., Yin, Y., Chen, C., & Shang, J. (2022). Goethite modified biochar simultaneously mitigates the arsenic and cadmium accumulation in paddy rice (Oryza sativa) L. Environmental Research, 206, 112238. https://doi.org/10.1016/j.envres.2021.112238
Irshad MK, et al. Goethite Modified Biochar Simultaneously Mitigates the Arsenic and Cadmium Accumulation in Paddy Rice (Oryza Sativa) L. Environ Res. 2022 04 15;206:112238. PubMed PMID: 34688646.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Goethite modified biochar simultaneously mitigates the arsenic and cadmium accumulation in paddy rice (Oryza sativa) L. AU - Irshad,Muhammad Kashif, AU - Noman,Ali, AU - Wang,Yang, AU - Yin,Yingjie, AU - Chen,Chong, AU - Shang,Jianying, Y1 - 2021/10/21/ PY - 2021/06/07/received PY - 2021/09/24/revised PY - 2021/10/16/accepted PY - 2021/10/25/pubmed PY - 2022/3/31/medline PY - 2021/10/24/entrez KW - Fe-plaque KW - Metal(loid)s KW - Oryza sativa L. KW - Paddy soil KW - Soil microbes SP - 112238 EP - 112238 JF - Environmental research JO - Environ Res VL - 206 N2 - Cadmium (Cd) and arsenic (As) contamination of paddy soils is a serious global issue because of the opposite geochemical behavior of Cd and As in paddy soils. Rice plant (Oryza sativa L.) cultivation in Cd- and As- contaminated paddy soil is regarded as one of the main dietary cause of Cd and As entry in human beings. This study aimed to determine the impact of goethite-modified biochar (GB) on bioavailability of both Cd and As in Cd- and As- polluted paddy soil. Contrary to control and biochar (BC) amendments, the application of GB amendments significantly impeded the accumulation of both Cd and As in rice plants. The results confirmed an obvious reduction in Cd and As content of rice grains by 85% and 77%, respectively after soil supplementation with GB 2% amendment. BC 3% application minimized the Cd uptake by 59% in the rice grains as compared to the control but exhibited a little impact on As accumulation in rice grains. Sequential extraction results displayed an increase in immobile Cd and As fractions of the soil by decreasing the bioavailable fractions of both elements after GB treatments. Fe-plaque formation on the root surfaces was significantly variable (P ˂ 0.05) among all the amendments. GB 2% treatment significantly increased the Fe content (10 g kg-1) of root Fe-plaque by 48%, which ultimately enhanced the sequestration of Cd and As by Fe-plaque and minimized the transport of Cd and As in rice plants. Moreover, GB treatments significantly changed the relative abundance of the microbial community in the rice rhizosphere and minimized the metal(loid)s mobility in the soil. The relative abundance of Acidobacteria, Firmicutes and Verrucomicrobia increased with GB 2% treatment while those of Bacteroidetes and Choloroflexi decreased. Our findings confirmed improvement in the rice grains quality regarding enhanced amino acid contents with GB application. Overall, the results of this study demonstrated that GB amendment simultaneously alleviated the Cd and As concentrations in edible parts of rice plant and provided a new valuable method to protect the public health by effectively remediating the co-occurrence of Cd and As in paddy soils. SN - 1096-0953 UR - https://www.unboundmedicine.com/medline/citation/34688646/Goethite_modified_biochar_simultaneously_mitigates_the_arsenic_and_cadmium_accumulation_in_paddy_rice__Oryza_sativa__L_ DB - PRIME DP - Unbound Medicine ER -