A critical review of uranium in the soil-plant system: Distribution, bioavailability, toxicity, and bioremediation strategies

IF 11.4 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Critical Reviews in Environmental Science and Technology Pub Date : 2023-02-01 DOI:10.1080/10643389.2022.2054246

Qingliang Cui, Zhiqing Zhang, Jingzi Beiyuan, Yongxing Cui, Li Chen, Hansong Chen, Linchuan Fang

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引用次数: 16

Abstract

Abstract Increasing uranium (U) content in soils due to anthropogenic U contamination causes accumulation of U in plants, which greatly increases human health risks. This review identified the diverse sources of soil U contamination and their significant spatial variations in surface soils globally based on 789 soil sampling sites collected from 76 studies. The relationships between U biogeochemical transformation and its bioavailability in soil are significantly affected by soil redox potential, pH, metal (hydr)oxides, organic matter, and microorganisms. The toxicity/detoxification mechanisms of U in plants and microorganisms have been extensively studied, and further studies should combine with omics techniques (proteomics, genomics, and metabolomics) to narrow the knowledge gaps in molecular mechanisms. Moreover, the mechanisms and applicability of phytoremediation and microbial bioremediation in U-contaminated soils were summarized. Based on the present review, we further propose several critical challenges and directions for improving our knowledge and remediation strategies of U contamination in the soil-plant system. This review would help us better understand the geochemical behavior of U in soil-plant systems and its potential risks to human health. Graphical abstract

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铀在土壤-植物系统中的分布、生物利用度、毒性和生物修复策略

摘要由于人为的铀污染，土壤中铀含量的增加导致了铀在植物中的积累，这大大增加了人类健康风险。这篇综述基于从76项研究中收集的789个土壤采样点，确定了全球表层土壤中土壤U污染的不同来源及其显著的空间变化。土壤氧化还原电位、pH、金属氧化物、有机物和微生物对U的生物地球化学转化及其在土壤中的生物利用度之间的关系有显著影响。U在植物和微生物中的毒性/解毒机制已经得到了广泛的研究，进一步的研究应该与组学技术（蛋白质组学、基因组学和代谢组学）相结合，以缩小分子机制方面的知识差距。综述了植物修复和微生物生物修复在铀污染土壤中的作用机理和适用性。基于目前的综述，我们进一步提出了几个关键的挑战和方向，以提高我们对土壤-植物系统中U污染的认识和修复策略。这篇综述将有助于我们更好地了解U在土壤-植物系统中的地球化学行为及其对人类健康的潜在风险。图形摘要

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来源期刊

Critical Reviews in Environmental Science and Technology 环境科学-环境科学

CiteScore

27.30

自引率

1.60%

发文量

审稿时长

2 months

期刊介绍： Two of the most pressing global challenges of our era involve understanding and addressing the multitude of environmental problems we face. In order to tackle them effectively, it is essential to devise logical strategies and methods for their control. Critical Reviews in Environmental Science and Technology serves as a valuable international platform for the comprehensive assessment of current knowledge across a wide range of environmental science topics. Environmental science is a field that encompasses the intricate and fluid interactions between various scientific disciplines. These include earth and agricultural sciences, chemistry, biology, medicine, and engineering. Furthermore, new disciplines such as environmental toxicology and risk assessment have emerged in response to the increasing complexity of environmental challenges. The purpose of Critical Reviews in Environmental Science and Technology is to provide a space for critical analysis and evaluation of existing knowledge in environmental science. By doing so, it encourages the advancement of our understanding and the development of effective solutions. This journal plays a crucial role in fostering international cooperation and collaboration in addressing the pressing environmental issues of our time.