Cadmium phytoextraction by Sedum alfredii and Sedum plumbizincicola: mechanisms, challenges and prospects.

IF 3.4 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Phytoremediation Pub Date : 2025-01-21 DOI:10.1080/15226514.2025.2451714

Xia Zhu, Chen Tu, Jiawen Zhou, Shuai Yang, Yuan Li, Longhua Wu, Lee A Newman, Yongming Luo

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引用次数: 0

Abstract

Phytoextraction using natural cadmium (Cd) hyperaccumulators, notably Sedum alfredii and Sedum plumbizincicola, represents an economical and efficient approach for soil Cd purification. However, achieving high phytoremediation efficiency necessitates a comprehensive understanding of the mechanisms underlying Cd tolerance and accumulation in these plants. This review summarizes key mechanisms, encompassing Cd activation in the rhizosphere, uptake and transport in the roots, translocation via the xylem, and Cd tolerance. Additionally, physical, chemical, and biological strategies for enhancing phytoremediation efficiency are overviewed and compared. Despite advancements, disparities persist between field and laboratory research, posing certain limitations to the application of natural hyperaccumulators for large-scale phytoextraction or specific soil types. To address these challenges, we propose combining novel hyperaccumulating-like biomaterials with intelligent agriculture to achieve large-scale precision phytoremediation. Furthermore, we aim to draw attention to strategies for enhancing the phytoextraction potential of non-hyperaccumulator plants with high biomass production and stimulate further research into phytoextraction-inducing substances.

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景天和紫景天植物提取镉的机制、挑战和前景。

利用天然镉（Cd）超富集植物提取镉（Cd）是一种经济有效的土壤镉净化方法，尤其是景天（Sedum alfredii）和雨景天（Sedum plumbizincicola）。然而，要实现高的植物修复效率，就必须全面了解这些植物对Cd的耐受性和积累机制。本文综述了镉在根际的激活、根的吸收和运输、木质部的转运以及镉耐受性等关键机制。此外，对提高植物修复效率的物理、化学和生物策略进行了综述和比较。尽管取得了进展，但实地研究和实验室研究之间仍然存在差距，这对天然超积累剂在大规模植物提取或特定土壤类型中的应用造成了一定的限制。为了解决这些挑战，我们建议将新型超积累类生物材料与智能农业相结合，以实现大规模的精确植物修复。此外，我们的目标是引起人们对提高具有高生物量生产的非超积累植物的植物提取潜力的策略的关注，并促进对植物提取诱导物质的进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Phytoremediation 环境科学-环境科学

CiteScore

7.60

自引率

5.40%

发文量

145

审稿时长

3.4 months

期刊介绍： The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.