A critical review of mercury speciation, bioavailability, toxicity and detoxification in soil-plant environment: Ecotoxicology and health risk assessment
Article
Article Title | A critical review of mercury speciation, bioavailability, toxicity and detoxification in soil-plant environment: Ecotoxicology and health risk assessment |
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ERA Journal ID | 3551 |
Article Category | Article |
Authors | Tahir, Natasha (Author), Shahid, Muhammad (Author), Khalid, Sana (Author), Bibi, Irshad (Author), Bundschuh, Jochen (Author), Niazi, Nabeel Khan (Author) and Dumat, Camille (Author) |
Journal Title | Science of the Total Environment |
Journal Citation | 711 |
Article Number | 134749 |
Number of Pages | 22 |
Year | 2020 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0048-9697 |
1879-1026 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.scitotenv.2019.134749 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0048969719347400 |
Abstract | Environmental contamination by a non-essential and non-beneficial, although potentially toxic mercury (Hg), is becoming a great threat to the living organisms at a global scale. Owing to its various uses in numerous industrial processes, high amount of Hg is released into different environmental compartments. Environmental Hg contamination can result in food chain contamination, especially due to its accumulation in edible plant parts. Consumption of Hg-rich food is a key source of Hg exposure to humans. Since Hg does not possess any identified biological role and has genotoxic and carcinogenic potential, it is critical to monitor its biogeochemical behavior in the soil–plant system and its influence in terms of possible food chain contamination and human exposure. This review traces a plausible link among Hg levels, its chemical speciation and phytoavailability in soil, accumulation in plants, phytotoxicity and detoxification of Hg inside the plant. The role of different enzymatic (peroxidase, catalase, ascorbate peroxidase, superoxide dismutase, glutathione peroxidase) and non-enzymatic (glutathione, phytochelatins, proline and ascorbic acid) antioxidants has also been elucidated with respect to enhanced generation of reactive radicles and resulting oxidative stress. The review also outlines Hg build-up in edible plant tissues and associated health risks. The biogeochemical role of Hg in the soil–plant system and associated health risks have been described with well summarized and up-to-date data in 12 tables and 4 figures. We believe that this comprehensive review article and meta-analysis of Hg data can be greatly valuable for scientists, researchers, policymakers and graduate-level students. |
Keywords | Hg contamination; Chemical speciation; Bioavailability, Phytotoxicity; Detoxification; Health risk |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 410402. Environmental assessment and monitoring |
410604. Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) | |
429999. Other health sciences not elsewhere classified | |
410404. Environmental management | |
300202. Agricultural land management | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | COMSATS University Islamabad, Pakistan |
University of Agriculture Faisalabad, Pakistan | |
UNESCO Chair on Groundwater Arsenic | |
School of Civil Engineering and Surveying | |
University of Toulouse, France | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5995/a-critical-review-of-mercury-speciation-bioavailability-toxicity-and-detoxification-in-soil-plant-environment-ecotoxicology-and-health-risk-assessment
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