Abstract

The biogeochemical transformations and biological effects of metalloids arsenic (As) and selenium (Se) in the environment has been extensively explored during the last decade, mainly owing to their ubiquitous distribution in the environment and their toxicity to biota. Here, we summarized recent research progress regarding As and Se in plant-soil-human ecosystem based on 17 publications in Critical Reviews in Environmental Science and Technology (CREST) during 2018–2021. The topics include: 1) organic As transformation in the environment and inorganic As uptake by plants (4 publications), 2) Se uptake by plants and its interactions with toxic metals in plants (6 publications), 3) As bioaccessibility and remediation of As-contaminated soils (4 publications), and 4) As research across spatial and temporal scale (3 publications). Specifically, the uptake, transformation, toxicity, bioaccessibility of As/Se in the plant-soil-human ecosystem together with pollution control measures are summarized. Future studies should focus on better understanding the cycling and biogeochemistry of As/Se in the environment, further decoding their environmental effects from the One Health perspective.

摘要

在过去十年中，人们对环境中的准金属砷 (As) 和硒 (Se) 的生物地球化学转化和生物效应进行了广泛的探索，这主要是由于它们在环境中的普遍分布及其对生物群的毒性。在这里，我们基于 2018-2021 年环境科学与技术评论 (CREST) 中的 17 篇出版物总结了植物-土壤-人类生态系统中砷和硒的最新研究进展。主题包括：1）环境中的有机砷转化和植物对无机砷的吸收（4 篇出版物），2）植物对硒的吸收及其与植物中有毒金属的相互作用（6 篇出版物），3）砷的生物可及性和修复- 受污染的土壤（4 篇出版物），以及 4）作为跨空间和时间尺度的研究（3 篇出版物）。具体来说，总结了As/Se在植物-土壤-人类生态系统中的吸收、转化、毒性、生物可及性以及污染控制措施。未来的研究应侧重于更好地了解 As/Se 在环境中的循环和生物地球化学，从 One Health 的角度进一步解读其对环境的影响。