Soil ammonium (NH4+) toxicity thresholds for restoration grass species
文献类型：期刊论文
| 作者 | Yang, Huixian2,3,4; Zhou, Jun3,4; Fei, Jiasai2,3,4; Ci, Kaidong3,4; Li, Demin3,4; Fan, Jianbo3; Wei, Chaoyang1; Liang, Jiani3,4; Xia, Ruizhi2,3,4; Zhou, Jing3,4 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 318页码:11 |
| ISSN号 | 0269-7491 |
| 关键词 | NH4+stress Toxicity thresholds Ion-type rare earths ore Ryegrass Alfalfa |
| DOI | 10.1016/j.envpol.2022.120869 |
| 通讯作者 | Zhou, Jun(zhoujun@issas.ac.cn) |
| 英文摘要 | Ionic rare earth mining has resulted in large amounts of bare soils, and revegetation success plays an important role in mine site rehabilitation and environmental management. However, the mining soils still maintain high NH4+ concentrations that inhibit plant growth and NH4+ toxicity thresholds for restoration plants have not been established. Here we investigated the NH4+ toxicological effects and provided toxicity thresholds for grasses (Lolium perenne L. and Medicago sativa L.) commonly used in restoration. The results show that high NH4+ con-centration not only reduces the plant biomass and soluble sugars in leaves but also increases the H2O2 and MDA content, and SOD, POD, and GPX activities in roots. The SOD activities and root biomass can be adopted as the most NH4+ sensitive biomarkers. Six ecotoxicological endpoints (root biomass, soluble sugars, proline, H2O2, MDA, and GSH) of ryegrass, eight ecotoxicological endpoints (root biomass, soluble sugars, proline, MDA, SOD, POD, GPX, and GSH) of alfalfa were selected to determine the threshold concentrations. The toxicity thresholds of NH4+ concentrations were proposed as 171.9 (EC5), 207.8 (EC10), 286.6 (EC25), 382.3 (EC50) mg kg-1 for ryegrass and 171.9 (EC5), 193.2 (EC10), 234.7 (EC25), 289.6 (EC50) mg kg -1 for alfalfa. The toxicity thresholds and the relation between plant physiological indicators and NH4+ concentrations can be used to assess the suitability of the investigated plants for ecological restoration strategies. |
| WOS关键词 | RARE-EARTH ; RESPONSES ; PLANTS ; HOMEOSTASIS ; METABOLISM ; MECHANISMS ; ENRICHMENT ; GROWTH ; SIGNAL ; ROS |
| 资助项目 | National Key Research and Development Program of China ; [2019YFC1805103] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000909925000001 |
| 资助机构 | National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/188831]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhou, Jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Engn & Res Ctr Red Soil Improvement, Red Soil Ecol Expt Stn, Yingtan 335211, Peoples R China 4.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Huixian,Zhou, Jun,Fei, Jiasai,et al. Soil ammonium (NH4+) toxicity thresholds for restoration grass species[J]. ENVIRONMENTAL POLLUTION,2023,318:11. |
| APA | Yang, Huixian.,Zhou, Jun.,Fei, Jiasai.,Ci, Kaidong.,Li, Demin.,...&Zhou, Jing.(2023).Soil ammonium (NH4+) toxicity thresholds for restoration grass species.ENVIRONMENTAL POLLUTION,318,11. |
| MLA | Yang, Huixian,et al."Soil ammonium (NH4+) toxicity thresholds for restoration grass species".ENVIRONMENTAL POLLUTION 318(2023):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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