Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan.
J Hazard Mater. 2021 Apr 5;407:124881. doi: 10.1016/j.jhazmat.2020.124881. Epub 2020 Dec 17.
During the last two decades, the use of soil amendments has gained high attention due to their role in governing trace element biogeochemistry in the soil. Majority of the studies dealing with soil amendments focused on the soil-plant transfer of trace elements, their compartmentation inside the plants and associated toxic effects. However, there is comparatively limited data regarding the effects of soil amendments on trace-element-induced oxidative stress (variations in stress and tolerance parameters) in plants. Therefore, this review, for the first time, critically elucidates the broad and specific trends in literature data of stress, tolerance and growth parameters under co-application of trace elements and soil amendments. For this purpose, a total of 3120 plant response items from literature data were collected/analyzed. The meta-analysis revealed an overall decrease in stress parameters (reactive oxygen species, membrane damage and lipid peroxidation), while an increase in tolerance parameters (antioxidants) and growth parameters (pigment contents). However, these general trends vary greatly with respect to different types of amendments, trace elements, plant species, plant organs and exposure cultures. In addition, the trends also varied for different types of response items of stress, tolerance and growth parameters (e.g., POD vs CAT, HO vs O). Manuscript critically discusses some mechanistic explanations for these general and specific trends in literature data. Finally, this review proposed key research gaps and important future perspectives. All the aspects discussed in this review have been strengthened with 23 Tables and 7 Figures. The research gaps and scientific queries established in this review based on meta-analysis of literature data will open new aspects of future research and discussion in the fields of ecotoxicology, stress physiology and remediation.
在过去的二十年中，由于土壤改良剂在控制土壤中微量元素生物地球化学方面的作用，它们的使用受到了高度关注。大多数研究土壤改良剂的重点是微量元素在土壤-植物中的转移、它们在植物内部的分区以及相关的毒性效应。然而，关于土壤改良剂对微量元素引起的氧化应激（应激和耐受参数的变化）对植物的影响的数据相对较少。因此，这篇综述首次批判性地阐明了在共施微量元素和土壤改良剂的情况下，文献中关于应激、耐受和生长参数的广泛和具体趋势。为此，从文献数据中总共收集/分析了 3120 个植物响应项。荟萃分析显示，应激参数（活性氧、膜损伤和脂质过氧化）总体下降，而耐受参数（抗氧化剂）和生长参数（色素含量）增加。然而，这些总体趋势因不同类型的改良剂、微量元素、植物物种、植物器官和暴露培养而异。此外，这些趋势对于应激、耐受和生长参数的不同类型的响应项（例如 POD 与 CAT、HO 与 O）也有很大差异。本文批判性地讨论了这些文献数据中一般和具体趋势的一些机制解释。最后，本综述提出了关键的研究空白和重要的未来展望。本文讨论的所有方面都通过 23 个表格和 7 个图表得到了加强。本综述基于文献数据的荟萃分析，确定了研究空白和科学疑问，为生态毒理学、应激生理学和修复领域的未来研究和讨论开辟了新的方面。
