College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, China; Gansu Provincial Key Lab of Arid-land Crop Science, Gansu Agricultural University, Lanzhou, 730070, China.
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, PR China.
Environ Res. 2021 Jun;197:111031. doi: 10.1016/j.envres.2021.111031. Epub 2021 Mar 18.
Extraction and exploration of petroleum hydrocarbons (PHs) to satisfy the rising world population's fossil fuel demand is playing havoc with human beings and other life forms by contaminating the ecosystem, particularly the soil. In the current review, we highlighted the sources of PHs contamination, factors affecting the PHs accumulation in soil, mechanisms of uptake, translocation and potential toxic effects of PHs on plants. In plants, PHs reduce the seed germination andnutrients translocation, and induce oxidative stress, disturb the plant metabolic activity and inhibit the plant physiology and morphology that ultimately reduce plant yield. Moreover, the defense strategy in plants to mitigate the PHs toxicity and other potential remediation techniques, including the use of organic manure, compost, plant hormones, and biochar, and application of microbe-assisted remediation, and phytoremediation are also discussed in the current review. These remediation strategies not only help to remediate PHs pollutionin the soil rhizosphere but also enhance the morphological and physiological attributes of plant and results to improve crop yield under PHs contaminated soils. This review aims to provide significant information on ecological importance of PHs stress in various interdisciplinary investigations and critical remediation techniques to mitigate the contamination of PHs in agricultural soils.
为了满足世界人口对化石燃料不断增长的需求，从石油烃（PHs）中提取和勘探对生态系统，特别是土壤造成了严重破坏，危害着人类和其他生命形式。在本次综述中，我们强调了 PHs 污染的来源、影响 PHs 在土壤中积累的因素、吸收、迁移的机制以及 PHs 对植物的潜在毒性影响。在植物中，PHs 会降低种子的萌发和养分的转移，并诱导氧化应激，扰乱植物的代谢活动，抑制植物的生理和形态，最终降低植物的产量。此外，植物减轻 PHs 毒性的防御策略以及其他潜在的修复技术，包括有机肥、堆肥、植物激素和生物炭的应用，以及微生物辅助修复和植物修复，也在本综述中进行了讨论。这些修复策略不仅有助于修复土壤根际的 PHs 污染，还能增强植物的形态和生理特性，从而提高受 PHs 污染土壤中作物的产量。本综述旨在为各种跨学科研究中 PHs 胁迫的生态重要性提供重要信息，并为减轻农业土壤中 PHs 污染提供关键的修复技术。
