The effects of typical amino acid ligands on Cd translocation and detoxification processes in hyperaccumulator Sedum alfredii Hance
文献类型：期刊论文
| 作者 | Kang, Fengxin2,3; Wei, Rongfei2; Huang, Xuzheng2,3; Dawuda, Usman Kaku2; Xu, Pei2,3; Li, Zhiying4; Tao, Zhenghua5; Tian, Liyan6; Ouyang, Xiaoxue1; Guo, Qingjun2 |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2026-06-01 |
| 卷号 | 164页码:47-56 |
| 关键词 | Cadmium Phytoremediation Sedum alfredii Amino acid Organic ligand |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/j.jes.2025.09.025 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Organic ligands are crucial for the uptake, translocation, and detoxification of heavy metals in plants. However, the effects of different amino acid ligands on these processes in hyperaccumulators remain insufficiently understood. The hyperaccumulator Sedum alfredii was planted in two types of farmland soil with different heavy metal pollution, and two typical amino acid ligands (glycine and cysteine) were applied. The antioxidant enzyme activities, cadmium (Cd) uptake and translocation processes have been investigated. The results demonstrated that, under low-pollution soil conditions, amino acid ligands augmented catalase (CAT) activity in the leaves of S. alfredii while it reduced hydrogen peroxide (H2O2) content, superoxide dismutase (SOD) and peroxidase (POD) activities. Conversely, under high-pollution conditions, H2O2 levels increased significantly; treatment with amino acid ligands notably enhanced SOD, POD, and CAT activities. Amino acids can promote plant growth, yet the promoting effect is relatively limited in highly polluted soil. Moreover, amino acid ligands significantly decreased soil pH and enhanced plant Cd uptake. However, Diethylenetriaminepentaacetic acid-Cadmium (DPTA-Cd) content in soils decreased substantially, with Raman M-O stretching signals potentially indicating Cd-amino acid complexes immobilized onto soil colloids. Glycine treatment significantly increased Cd levels in stems and leaves while it decreased in roots. In contrast, cysteine raised Cd levels in roots and stems but it reduced in leaves. Glycine appears to facilitate Cd translocation by promoting apoplastic uptake of the Cd-glycine complex, thereby improving efficiency. In contrast, cysteine likely diminishes translocation efficiency by enhancing Cd chelation within root cells. This study provides theoretical support for the mechanism of plant enrichment using organic ligands. |
| URL标识 | 查看原文 |
| WOS关键词 | HEALTH-RISK ASSESSMENT ; CADMIUM TOLERANCE ; CITRIC-ACID ; HEAVY-METALS ; SULFUR ; SOIL ; PHYTOEXTRACTION ; CHROMIUM ; ROOTS ; ACCUMULATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001716649700001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221261]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 通讯作者 | Wei, Rongfei |
| 作者单位 | 1.Tianjin Acad Agr Sci, Inst Agr Prod Qual Safety & Nutr, Tianjin 300381, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100190, Peoples R China; 4.China Univ Geosci, Sch Geog & Informat Engn, Wuhan 430078, Peoples R China; 5.Beijing Municipal Res Inst Ecoenvironm Protect, Beijing Key Lab Risk Modeling & Remediat Contamina, Beijing 100037, Peoples R China; 6.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Kang, Fengxin,Wei, Rongfei,Huang, Xuzheng,et al. The effects of typical amino acid ligands on Cd translocation and detoxification processes in hyperaccumulator Sedum alfredii Hance[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2026,164:47-56. |
| APA | Kang, Fengxin.,Wei, Rongfei.,Huang, Xuzheng.,Dawuda, Usman Kaku.,Xu, Pei.,...&Guo, Qingjun.(2026).The effects of typical amino acid ligands on Cd translocation and detoxification processes in hyperaccumulator Sedum alfredii Hance.JOURNAL OF ENVIRONMENTAL SCIENCES,164,47-56. |
| MLA | Kang, Fengxin,et al."The effects of typical amino acid ligands on Cd translocation and detoxification processes in hyperaccumulator Sedum alfredii Hance".JOURNAL OF ENVIRONMENTAL SCIENCES 164(2026):47-56. |
入库方式： OAI收割
来源：地理科学与资源研究所
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