Rice genotype's responses to arsenic stress and cancer risk: the effects of integrated birnessite-modified rice hull biochar-water management applications
Article
Article Title | Rice genotype's responses to arsenic stress and cancer risk: the effects of integrated birnessite-modified rice hull biochar-water management applications |
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ERA Journal ID | 3551 |
Article Category | Article |
Authors | Kumarathilaka, Prasanna (Author), Bundschuh, Jochen (Author), Seneweera, Saman (Author) and Ok, Yong Sik (Author) |
Journal Title | Science of the Total Environment |
Journal Citation | 768, pp. 1-9 |
Article Number | 144531 |
Number of Pages | 9 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0048-9697 |
1879-1026 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.scitotenv.2020.144531 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0048969720380621 |
Abstract | The health risks associated with ingestion of arsenic (As) via consumption of rice are a global concern. This study investigated the effects of integrated biochar (BC)-water management approaches to As stress and to associated health risks in rice. Rice cultivars, Jayanthi and Ishikari, were grown, irrigated with As-containing water (1 mg L−1), under the following treatments: (1) birnessite-modified rice hull biochar (Mn-RBC)-flooded water management, (2) Mn-RBC-intermittent water management, (3) conventional flooded water management, and (4) intermittent water management. Rice yield in both rice varieties increased by 10%–34% under Mn-RBC-flooded and Mn-RBC-intermittent treatments compared to the conventional flooded treatment. In most cases, inorganic As concentration in rice roots, shoots, husks, and unpolished grains in both rice varieties was significantly (p ≤ 0.05) lowered by 20%–81%, 6%–81%, 30%–75%, and 18%–44%, respectively, under Mn-RBC-flooded, Mn-RBC-intermittent, and intermittent treatments over flooded treatment. Incremental lifetime cancer risks associated with consumption of both rice varieties were also lowered from 18% to 44% under Mn-RBC-flooded, Mn-RBC-intermittent, and intermittent treatments compared to flooded treatment. Overall, the integrated Mn-RBC-intermittent approach can be applied to As-endemic areas to produce safer rice grains and reduce the incremental lifetime cancer risk through rice consumption. |
Keywords | inorganic arsenic; rice; biochar; arsenic fractionation;cancer risk |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 410405. Environmental rehabilitation and restoration |
330404. Land use and environmental planning | |
300202. Agricultural land management | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | School of Civil Engineering and Surveying |
Centre for Crop Health | |
Korea University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6295/rice-genotype-s-responses-to-arsenic-stress-and-cancer-risk-the-effects-of-integrated-birnessite-modi-ed-rice-hull-biochar-water-management-applications
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