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Osman HE, Fadhlallah RS, El-Morsy MHE. Synergistic effect by Sorghum bicolor L., citric acid, biochar, and vermiwash amendment for the remediation of a mine-contaminated soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34223-8. [PMID: 39003426 DOI: 10.1007/s11356-024-34223-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 06/29/2024] [Indexed: 07/15/2024]
Abstract
Phytoremediation is an in situ remediation and eco-friendly technique employing accumulator plant species to remove trace elements (TEs) from contaminated sites. Moreover, it has been demonstrated that both natural and synthetic amendments can enhance trace elements (TEs) phytoremediation from polluted soils through bioenergy crops. This work assessed the synergistic impact of two tested biochar (BC) from data palm (B1) and Prosopis (B2) (1.5%/ kg), citric acid (CA, 1.5 mmol/kg) and vermiwash (VW, 20 ml/kg) to enhance the remediation of tested TEs (Mn, Zn, Cd, Pb, Ni, Cu, and Fe) from Mahad AD'Dahab mine-contaminated soil by sorghum (Sorghum bicolor L.). The BC and CA amendments alone and combined with VW significantly augmented the proliferation and survival of sorghum grown in mine-contaminated soil. Considering the individual and combined applications of VW and BC, the influence on plant growth followed this order: K < VW < B2 < B1 < B1 + VW < B2 + VW < CA < CA + VW. Applying tested BC/CA and VW significantly increased chlorophyll compared to unamended soil. The outcomes revealed a substantial elevation in TE absorption in both shoot and root (p ≤ 0.05) with all tested treatments compared to the untreated soil (K). The combined application of CA and VW resulted in the most significant TE uptake of TEs at both the root and the shoot. Furthermore, adding CA or VW as a foliar spray enhanced the bioaccumulation factor (BCF) and translocation factor (TF) of studied metals. The combined addition of CA and foliar spraying of VW was more effective than the sole addition of CA or VW. Such increase reached 20.0%, 15.6%, 19.4%, 14.3%, 14.0%, and 25.6% of TF, and 13.7%, 11.9%, 8.3%, 20.9%, 20.5%,18.7%, and 19.8% of BCE for Cd, Cu, Fe, Mn, Ni, Pb, and Zn, respectively. This study highlights the efficiency of combining CA/BC with VW as a more viable option for remediating mine-contaminated soil than individual amendments. However, future research should prioritize long-term field trials to assess the efficiency of using citric acid and vermiwash for restoring contaminated mining soils.
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Affiliation(s)
- Hanan E Osman
- Biology Department, Faculty of Science, Umm-Al-Qura University, Makkah, Saudi Arabia.
| | - Ruwaydah S Fadhlallah
- Biology Department, Faculty of Science, Umm-Al-Qura University, Makkah, Saudi Arabia
| | - Mohamed H E El-Morsy
- Deanship of Postgraduate Studied and Research, Umm Al-Qura University, Makkah, Saudi Arabia
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Zhang X, Yang M, Yang H, Pian R, Wang J, Wu AM. The Uptake, Transfer, and Detoxification of Cadmium in Plants and Its Exogenous Effects. Cells 2024; 13:907. [PMID: 38891039 PMCID: PMC11172145 DOI: 10.3390/cells13110907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 05/13/2024] [Accepted: 05/13/2024] [Indexed: 06/20/2024] Open
Abstract
Cadmium (Cd) exerts a toxic influence on numerous crucial growth and development processes in plants, notably affecting seed germination rate, transpiration rate, chlorophyll content, and biomass. While considerable advances in Cd uptake and detoxification of plants have been made, the mechanisms by which plants adapt to and tolerate Cd toxicity remain elusive. This review focuses on the relationship between Cd and plants and the prospects for phytoremediation of Cd pollution. We highlight the following issues: (1) the present state of Cd pollution and its associated hazards, encompassing the sources and distribution of Cd and the risks posed to human health; (2) the mechanisms underlying the uptake and transport of Cd, including the physiological processes associated with the uptake, translocation, and detoxification of Cd, as well as the pertinent gene families implicated in these processes; (3) the detrimental effects of Cd on plants and the mechanisms of detoxification, such as the activation of resistance genes, root chelation, vacuolar compartmentalization, the activation of antioxidant systems and the generation of non-enzymatic antioxidants; (4) the practical application of phytoremediation and the impact of incorporating exogenous substances on the Cd tolerance of plants.
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Affiliation(s)
- Xintong Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China (R.P.)
| | - Man Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China (R.P.)
| | - Hui Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China (R.P.)
| | - Ruiqi Pian
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China (R.P.)
| | - Jinxiang Wang
- Root Biology Center, South China Agricultural University, Guangzhou 510642, China
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
- Key Laboratory of Agricultural and Rural Pollution Control and Environmental Safety in Guangdong Province, Guangzhou 510642, China
| | - Ai-Min Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China (R.P.)
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Ghorbani A, Emamverdian A, Pehlivan N, Zargar M, Razavi SM, Chen M. Nano-enabled agrochemicals: mitigating heavy metal toxicity and enhancing crop adaptability for sustainable crop production. J Nanobiotechnology 2024; 22:91. [PMID: 38443975 PMCID: PMC10913482 DOI: 10.1186/s12951-024-02371-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 02/25/2024] [Indexed: 03/07/2024] Open
Abstract
The primary factors that restrict agricultural productivity and jeopardize human and food safety are heavy metals (HMs), including arsenic, cadmium, lead, and aluminum, which adversely impact crop yields and quality. Plants, in their adaptability, proactively engage in a multitude of intricate processes to counteract the impacts of HM toxicity. These processes orchestrate profound transformations at biomolecular levels, showing the plant's ability to adapt and thrive in adversity. In the past few decades, HM stress tolerance in crops has been successfully addressed through a combination of traditional breeding techniques, cutting-edge genetic engineering methods, and the strategic implementation of marker-dependent breeding approaches. Given the remarkable progress achieved in this domain, it has become imperative to adopt integrated methods that mitigate potential risks and impacts arising from environmental contamination on yields, which is crucial as we endeavor to forge ahead with the establishment of enduring agricultural systems. In this manner, nanotechnology has emerged as a viable field in agricultural sciences. The potential applications are extensive, encompassing the regulation of environmental stressors like toxic metals, improving the efficiency of nutrient consumption and alleviating climate change effects. Integrating nanotechnology and nanomaterials in agrochemicals has successfully mitigated the drawbacks associated with traditional agrochemicals, including challenges like organic solvent pollution, susceptibility to photolysis, and restricted bioavailability. Numerous studies clearly show the immense potential of nanomaterials and nanofertilizers in tackling the acute crisis of HM toxicity in crop production. This review seeks to delve into using NPs as agrochemicals to effectively mitigate HM toxicity and enhance crop resilience, thereby fostering an environmentally friendly and economically viable approach toward sustainable agricultural advancement in the foreseeable future.
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Affiliation(s)
- Abazar Ghorbani
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China.
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, Islamic Republic of Iran.
| | - Abolghassem Emamverdian
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
| | - Necla Pehlivan
- Biology Department, Faculty of Arts and Sciences, Recep Tayyip Erdogan University, Rize, 53100, Türkiye
| | - Meisam Zargar
- Department of Agrobiotechnology, Institute of Agriculture, RUDN University, Moscow, 117198, Russia
| | - Seyed Mehdi Razavi
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, Islamic Republic of Iran
| | - Moxian Chen
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China.
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Yin F, Li J, Wang Y, Yang Z. Biodegradable chelating agents for enhancing phytoremediation: Mechanisms, market feasibility, and future studies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 272:116113. [PMID: 38364761 DOI: 10.1016/j.ecoenv.2024.116113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 02/08/2024] [Accepted: 02/11/2024] [Indexed: 02/18/2024]
Abstract
Heavy metals in soil significantly threaten human health, and their remediation is essential. Among the various techniques used, phytoremediation is one of the safest, most innovative, and effective. In recent years, the use of biodegradable chelators to assist plants in improving their remediation efficiency has gained popularity. These biodegradable chelators aid in the transformation of metal ions or metalloids, thereby facilitating their mobilization and uptake by plants. Developed countries are increasingly adopting biodegradable chelators for phytoremediation, with a growing emphasis on green manufacturing and technological innovation in the chelating agent market. Therefore, it is crucial to gain a comprehensive understanding of the mechanisms and market prospects of biodegradable chelators for phytoremediation. This review focuses on elucidating the uptake, translocation, and detoxification mechanisms of chelators in plants. In this study, we focused on the effects of biodegradable chelators on the growth and environmental development of plants treated with phytoremediation agents. Finally, the potential risks associated with biodegradable chelator-assisted phytoremediation are presented in terms of their availability and application prospects in the market. This study provides a valuable reference for future research in this field.
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Affiliation(s)
- Fengwei Yin
- School of Life Sciences, Taizhou University, Taizhou 318000, People's Republic of China
| | - Jianbin Li
- Jiaojiang Branch of Taizhou Municipal Ecology and Environment Bureau, Taizhou 318000, People's Republic of China
| | - Yilu Wang
- School of Life Sciences, Taizhou University, Taizhou 318000, People's Republic of China; Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Zhongyi Yang
- School of Life Sciences, Taizhou University, Taizhou 318000, People's Republic of China.
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He S, Niu Y, Xing L, Liang Z, Song X, Ding M, Huang W. Research progress of the detection and analysis methods of heavy metals in plants. FRONTIERS IN PLANT SCIENCE 2024; 15:1310328. [PMID: 38362447 PMCID: PMC10867983 DOI: 10.3389/fpls.2024.1310328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 01/15/2024] [Indexed: 02/17/2024]
Abstract
Heavy metal (HM)-induced stress can lead to the enrichment of HMs in plants thereby threatening people's lives and health via the food chain. For this reason, there is an urgent need for some reliable and practical techniques to detect and analyze the absorption, distribution, accumulation, chemical form, and transport of HMs in plants for reducing or regulating HM content. Not only does it help to explore the mechanism of plant HM response, but it also holds significant importance for cultivating plants with low levels of HMs. Even though this field has garnered significant attention recently, only minority researchers have systematically summarized the different methods of analysis. This paper outlines the detection and analysis techniques applied in recent years for determining HM concentration in plants, such as inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS), atomic fluorescence spectrometry (AFS), X-ray absorption spectroscopy (XAS), X-ray fluorescence spectrometry (XRF), laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), non-invasive micro-test technology (NMT) and omics and molecular biology approaches. They can detect the chemical forms, spatial distribution, uptake and transport of HMs in plants. For this paper, the principles behind these techniques are clarified, their advantages and disadvantages are highlighted, their applications are explored, and guidance for selecting the appropriate methods to study HMs in plants is provided for later research. It is also expected to promote the innovation and development of HM-detection technologies and offer ideas for future research concerning HM accumulation in plants.
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Affiliation(s)
- Shuang He
- College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Yuting Niu
- College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Lu Xing
- College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Zongsuo Liang
- College of Life Sciences and Medicine, Key Laboratory of Plant Secondary Metabolism and Regulation in Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiaomei Song
- College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China
- Key Laboratory of “Taibaiqiyao” Research and Applications, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Meihai Ding
- Management Department, Xi’an Ande Pharmaceutical Co; Ltd., Xi’an, China
| | - Wenli Huang
- College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, China
- Key Laboratory of “Taibaiqiyao” Research and Applications, Shaanxi University of Chinese Medicine, Xianyang, China
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Chen K, Li Y, Yu C, Chen P, Chen J, Gao G, Wang X, Xiong H, Zhu A. Systematic evaluation of ramie (Boehmeria nivea L.) for phytoremediation of cadmium contaminated soil and the mechanism of microbial regulation. CHEMOSPHERE 2023; 337:139298. [PMID: 37391082 DOI: 10.1016/j.chemosphere.2023.139298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/02/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023]
Abstract
Ramie is an ideal crop for remediation of cadmium (Cd) contaminated soil. However, there is a lack of rapid and effective evaluation system for Cd tolerance of ramie germplasms, and also a lack of systematic and in-depth research under Cd contaminated field conditions. This study innovatively developed a rapid screening system of "hydroponics-pot planting", and 196 core germplasms were used to quickly and effectively identify their Cd tolerance and Cd enrichment capacity. Then, two excellent varieties were selected to carry out a 4 years of field experiment under Cd contaminated field to study the remediation model, evaluation of reuse after repair and the mechanism of microbial regulation. The results showed that ramie adopted the cycle mode of "Absorption-activating soil Cd-Migration-Absorption" to remediate on Cd contaminated field, and the application of ramie for remediation had good ecological and economic benefits. Ten dominant genera such as Pseudonocardiales, as well as the key functional genes (mdtC, mdtB, mdtB/yegN, actR, rpoS, and ABA transporter gene) in rhizosphere soil, were identified to participate in activating Cd in rhizosphere soil and promoting ramie to enrich Cd. This study provides a technical route and practical production experience for the research field of phytoremediation of heavy metal pollution.
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Affiliation(s)
- Kunmei Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Yulan Li
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Chunming Yu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Ping Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Jikang Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Gang Gao
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Xiaofei Wang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Heping Xiong
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
| | - Aiguo Zhu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, Hunan Province, China.
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Xu J, Xing Y, Wang J, Yang Y, Ye C, Sun R. Effect of poly-γ-glutamic acid on the phytoremediation of ramie (Boehmeria nivea L.) in the Hg-contaminated soil. CHEMOSPHERE 2023; 312:137280. [PMID: 36403812 DOI: 10.1016/j.chemosphere.2022.137280] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/26/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Farmlands around the Hg mining areas have suffered from severe Hg contamination issues, triggering a phenomenon of high Hg content in crops, and subsequently threatening human health. In this study, ramie (Boehmeria nivea L.) assisted with poly-γ-glutamic acid (γ-PGA) was employed to remediate the Hg-contaminated soil through incubation experiments. After the soil was amended with γ-PGA, the leaf Hg content increased by 4.4-fold, and the translocation factor value even reached 3.5, indicating that γ-PGA could dramatically enhance the translocation of Hg from root and stem to leaf. γ-PGA could induce the transformation of potentially available Hg to available fractions, resulting in the soil Hg being more bioavailable. Batch trials verified that γ-PGA could mask the adsorption function of Hg ions by soil organic matter, significantly stimulating the desorption of Hg ions from the soil. As a result, the soil Hg would transfer to the aqueous phase and be assimilated by the root of ramie more easily and effectively. The γ-PGA chelated Hg is hydrophilic and has a high affinity with -SH and -S-; thereby, it can easily stride over the Casparian strip, enter the vessel, be translocated upwards, be sequestered in the tissues of leaf, and be incorporated irreversibly. This study can provide a new method for the remediation of Hg-contaminated soil.
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Affiliation(s)
- Jing Xu
- School of Chemistry and Material, Guizhou Normal University, Guiyang 550025, China
| | - Ying Xing
- School of Chemistry and Material, Guizhou Normal University, Guiyang 550025, China
| | - Jun Wang
- School of Chemistry and Material, Guizhou Normal University, Guiyang 550025, China
| | - Yang Yang
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, PR China
| | - Cai Ye
- School of Chemistry and Material, Guizhou Normal University, Guiyang 550025, China
| | - Rongguo Sun
- School of Chemistry and Material, Guizhou Normal University, Guiyang 550025, China.
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Wu Y, Liu Z, Yang GX, Yang P, Peng YP, Chen C, Xue F, Liu T, Liu HL, Liu SQ. Combined effect of humic acid and vetiver grass on remediation of cadmium-polluted water. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 244:114026. [PMID: 36055041 DOI: 10.1016/j.ecoenv.2022.114026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 07/29/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Effective treatment of water pollution is an economic and social requirement globally. Humic acid (HA) is a popular mitigator for such waters. However, the combined effect of HA and restorative plants on cadmium (Cd) remediation is not well understood. Therefore, we experimented on Cd remediation using HA along with vetiver grass and HA-vetiver grass. We observed that vetiver grass effectively removed Cd at 15~30 mg/L. The accumulation capacity of the root was significantly higher than the shoots (P < 0.05), and Cd distribution followed the trend: cell wall > organelle > soluble substance (F1 > F2 > F3). The plant's accumulation capacity against 25 mg/L Cd was higher than for other treatments. The root accumulation capacity was much higher (702.3 mg/L) than those without added HA. However, upon adding 200 and 250 mg/L HA, the phytoremediation of Cd in the root and shoot significantly reduced (P < 0.05). Conversely, HA improved the Cd removal efficiency of the plants, notably at a lower HA concentration (150 mg/L). In addition, HA (especially at 150 mg/L) influences Cd distribution in vetiver cells (P < 0.05) and can significantly increase the proportion of Cd in the root cytoplasm. Consequently, a low HA concentration can significantly improve Cd accumulation in the vetiver, shorten the metal's bioremediation cycle, and improve the biological absorption efficiency.
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Affiliation(s)
- Yong Wu
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Zhuo Liu
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Gui Xin Yang
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Peng Yang
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Yang Peng Peng
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Cun Chen
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Feilong Xue
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Tao Liu
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China
| | - Hong Ling Liu
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China.
| | - Song Qing Liu
- College of Chemistry and Life Sciences, Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources, Chengdu Normal University, Chengdu 611130, China.
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Zhao K, Yang Y, Zhang L, Zhang J, Zhou Y, Huang H, Luo S, Luo L. Silicon-based additive on heavy metal remediation in soils: Toxicological effects, remediation techniques, and perspectives. ENVIRONMENTAL RESEARCH 2022; 205:112244. [PMID: 34688645 DOI: 10.1016/j.envres.2021.112244] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 09/24/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
Chemical fertilizer is gaining increasing attention and has been the center of much research which indicating complex beneficial and harmful effects. Chemical fertilizer might cause some environmental hazards to the biosphere, especially in the agricultural ecosystem. The application of silicon (Si) fertilizer in agriculture has been proved to be able to create good economic and environmental benefits. Si is the second most abundant earth crust element. Si fertilizer improves soil quality and alleviates biotic and abiotic crop stress. It is of great significance to understand the function of Si fertilizer in agricultural utilization and environmental remediation. This paper reviews the Si-based fertilizer in farmland use and summarizes prior research relevant with characterization, soil quality improvement, and pollution remediation effects. Its use in agriculture enhances plant silicon uptake, mediates plant salt and drought stress and remediates heavy metals such as Al, As, Cd, Cu, Zn and Cr. This article also summarizes the detoxification mechanism of silicon and its effects on plant physiological activity such as photosynthesis and transpiration. Fertilizer materials and crop fertilizer management were also considered. Foliar spraying is an effective method to improve crop growth and yield and reduce biotic or abiotic stress. Silicon nanoparticle material provides potential with great potential and prospects. More investigation and research are prospected to better understand how silicon impacts the environment and whether it is a beneficial additive.
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Affiliation(s)
- Keqi Zhao
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Yuan Yang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China.
| | - Lihua Zhang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Jiachao Zhang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China.
| | - Yaoyu Zhou
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Hongli Huang
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Shuang Luo
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
| | - Lin Luo
- Hunan International Scientific and Technological Cooperation Center for Agricultural Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan, 410028, China
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Sources of and Control Measures for PTE Pollution in Soil at the Urban Fringe in Weinan, China. LAND 2021. [DOI: 10.3390/land10070762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The environment of the urban fringe is complex and frangible. With the acceleration of industrialization and urbanization, the urban fringe has become the primary space for urban expansion, and the intense human activities create a high risk of potentially toxic element (PTE) pollution in the soil. In this study, 138 surface soil samples were collected from a region undergoing rapid urbanization and construction—Weinan, China. Concentrations of As, Pb, Cr, Cu, and Ni (Inductively Coupled Plasma Mass Spectrometry, ICP-MS) and Hg (Atomic Fluorescence Spectrometry, AFS) were measured. The Kriging interpolation method was used to create a visualization of the spatial distribution characteristics and to analyze the pollution sources of PTEs in the soil. The pollution status of PTEs in the soil was evaluated using the national environmental quality standards for soils in different types of land use. The results show that the content range of As fluctuated a small amount and the coefficient of variation is small and mainly comes from natural soil formation. The content of Cr, Cu, and Ni around the automobile repair factory, the prefabrication factory, and the building material factory increased due to the deposition of wear particles in the soil. A total of 13.99% of the land in the study area had Hg pollution, which was mainly distributed on category 1 development land and farmland. Chemical plants were the main pollution sources. The study area should strictly control the industrial pollution emissions, regulate the agricultural production, adjust the land use planning, and reduce the impact of pollution on human beings. Furthermore, we make targeted remediation suggestions for each specific land use type. These results are of theoretical significance, will be of practical value for the control of PTEs in soil, and will provide ecological environmental protection in the urban fringe throughout the urbanization process.
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Haider FU, Liqun C, Coulter JA, Cheema SA, Wu J, Zhang R, Wenjun M, Farooq M. Cadmium toxicity in plants: Impacts and remediation strategies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111887. [PMID: 33450535 DOI: 10.1016/j.ecoenv.2020.111887] [Citation(s) in RCA: 417] [Impact Index Per Article: 139.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 12/21/2020] [Accepted: 12/30/2020] [Indexed: 05/02/2023]
Abstract
Cadmium (Cd) is an unessential trace element in plants that is ubiquitous in the environment. Anthropogenic activities such as disposal of urban refuse, smelting, mining, metal manufacturing, and application of synthetic phosphate fertilizers enhance the concentration of Cd in the environment and are carcinogenic to human health. In this manuscript, we reviewed the sources of Cd contamination to the environment, soil factors affecting the Cd uptake, the dynamics of Cd in the soil rhizosphere, uptake mechanisms, translocation, and toxicity of Cd in plants. In crop plants, the toxicity of Cd reduces uptake and translocation of nutrients and water, increases oxidative damage, disrupts plant metabolism, and inhibits plant morphology and physiology. In addition, the defense mechanism in plants against Cd toxicity and potential remediation strategies, including the use of biochar, minerals nutrients, compost, organic manure, growth regulators, and hormones, and application of phytoremediation, bioremediation, and chemical methods are also highlighted in this review. This manuscript may help to determine the ecological importance of Cd stress in interdisciplinary studies and essential remediation strategies to overcome the contamination of Cd in agricultural soils.
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Affiliation(s)
- Fasih Ullah Haider
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China; Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Cai Liqun
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China; Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China.
| | - Jeffrey A Coulter
- Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA
| | - Sardar Alam Cheema
- Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan
| | - Jun Wu
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China; Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Renzhi Zhang
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China; Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Ma Wenjun
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China; Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Muhammad Farooq
- Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan; Department of Plant Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoud 123, Oman.
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12
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Ju W, Liu L, Jin X, Duan C, Cui Y, Wang J, Ma D, Zhao W, Wang Y, Fang L. Co-inoculation effect of plant-growth-promoting rhizobacteria and rhizobium on EDDS assisted phytoremediation of Cu contaminated soils. CHEMOSPHERE 2020; 254:126724. [PMID: 32334248 DOI: 10.1016/j.chemosphere.2020.126724] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 02/08/2020] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
Chelants application can increase the bioavailability of metals, subsequently limiting plant growth and reducing the efficiency of phytoremediation. Plant growth-promoting rhizobacteria (PGPRs) and rhizobium have substantial potential to improve plant growth and plant tolerance to metal stress. We evaluated the effects of co-inoculation with a PGPR strain (Paenibacillus mucilaginosus) and a Cu-resistant rhizobium strain (Sinorhizobium meliloti) on the efficiency of biodegradable chelant (S,S-ethylenediaminedisuccinic acid; EDDS) assisted phytoremediation of a Cu contaminated soil using alfalfa. The highest total Cu extraction by alfalfa was observed in the EDDS-treated soil upon co-inoculation with the PGPR and rhizobium strains, which was 1.2 times higher than that without co-inoculation. Partial least squares path modeling identified plant oxidative damage and soil microbial biomass as the key variables influencing Cu uptake by alfalfa roots. Co-inoculation significantly reduced the oxidative damage to alfalfa by mitigating the accumulation of malondialdehyde and reactive oxygen species, and improving the antioxidation capacity of the plant in the presence of EDDS. EDDS application decreased microbial diversity in the rhizosphere, whereas co-inoculation increased microbial biomass carbon and nitrogen, and microbial community diversity. Increased relative abundances of Actinobacteria and Bacillus and the presence of Firmicutes taxa as potential biomarkers demonstrated that co-inoculation increased soil nutrient content, and improved plant growth. Co-inoculation with PGPR and rhizobium can be useful for altering plant-soil biochemical responses during EDDS-enhanced phytoremediation to alleviate phytotoxicity of heavy metals and improve soil biochemical activities. This study provides an effective strategy for improving phytoremediation efficiency and soil quality during chelant assisted phytoremediation of metal-contaminated soils.
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Affiliation(s)
- Wenliang Ju
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China; CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xian, 710061, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lei Liu
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, the Netherlands
| | - Xiaolian Jin
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China
| | - Chengjiao Duan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongxing Cui
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jie Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China
| | - Dengke Ma
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Zhao
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China
| | - Yunqiang Wang
- CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xian, 710061, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xian, 710061, China
| | - Linchuan Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, 712100, China; CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xian, 710061, China.
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13
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Han R, Dai H, Twardowska I, Zhan J, Wei S. Aqueous extracts from the selected hyperaccumulators used as soil additives significantly improve accumulation capacity of Solanum nigrum L. for Cd and Pb. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122553. [PMID: 32222552 DOI: 10.1016/j.jhazmat.2020.122553] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 02/27/2020] [Accepted: 03/16/2020] [Indexed: 06/10/2023]
Abstract
The effects of soil treatment with aqueous extracts from three hyperaccumulators on Cd and Pb accumulation by Solanum nigrum L. were determined. The stem (S-RG) and leaf extracts (L-RG) of Rorippaglobosa (Turcz.) Thell., and stem extract (S-BP) of Bidens pilosa L. significantly enhanced Cd and Pb total accumulation capacity of S. nigrum compared to control (by 44 %, 47 %, and 29 % for Cd and by 28 %, 28 % and 21 % for Pb, respectively), while EDTA caused its 9 % and 15 % decrease due to the plant biomass reduction (by 33 %). The leaching experiments reflected affinity of additives to metal mobilization in soils. The concentrations of total organic acid in S-RG, L-RG and S-BP were the highest among studied extracts, which besides the beneficial effect on the soil environment (microbe number and enzyme activities), may be partial reasons of strong promotion of S. nigrum accumulation capacity for Cd and Pb. It was shown that hyperaccumulation properties of a plant are not a prerequisite of enhancing effect of the plant-based soil additive on the metal accumulation capacity of the target living hyperaccumultor. The plant-based chelators were found to be promising candidates for EDTA and other chemicals replacement in promoting efficient and environmentally safe phytoremediation.
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Affiliation(s)
- Ran Han
- Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huiping Dai
- College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-Resources, Shaanxi University of Technology, Hanzhong 723001, China
| | - Irena Twardowska
- Institute of Environmental Engineering of the Polish Academy of Sciences, 41-819 Zabrze, Poland
| | - Jie Zhan
- College of Liaoning Professional Hygiene Technology, Shenyang 110101, China
| | - Shuhe Wei
- Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
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14
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Wu R, Fan Y, Wu Y, Zhou S, Tang S, Feng X, Tan X, Wang J, Liu L, Jin Y, Xia C. Insights into mechanism on organic acids assisted translocation of uranium in Brassica juncea var. foliosa by EXAFS. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2020; 218:106254. [PMID: 32421586 DOI: 10.1016/j.jenvrad.2020.106254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/03/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Citric acid (CA) and Lactic acid (LA) were used as additives to study the mechanism of organic acid promoting the root-to-shoot translocation of uranium (U) in Brassica juncea var. foliosa from molecular and tissue levels. Firstly, the distribution of U in plants under the condition of different organic acids concentrations were studied. The accumulation of U in leafs of 1 mM CA group and 5 mM LA group reached 2225 and 1848 mg/kg respectively, which was about 5 times that of the control group. Secondly, the speciation and distribution of U in plant roots after exposure to different culture solutions were studied by EXAFS and SEM. The result of EXAFS found that the complex of U with organic acids resulted in the U accumulated in the roots was the uranyl carboxylate speciation, while the control group only was the uranyl phosphate speciation. SEM results showed that the lactic acids could enhanced the translocation of U from the cortex to the stele. Thirdly, we further studied the apoplastic pathway and the symplastic pathway of U translocation using transpiration inhibitor and metabolism inhibitor. Compared with the control group, it was likely that the complex of U with organic acids were translocated into the shoot of plants through the apoplastic pathway.
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Affiliation(s)
- Rulei Wu
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yu Fan
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yixuan Wu
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Sai Zhou
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Siqun Tang
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaojie Feng
- Logistic Engineering University, Chongqing, 401311, China
| | - Xiaoli Tan
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Jianmei Wang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China
| | - Li Liu
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yongdong Jin
- College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Chuanqin Xia
- College of Chemistry, Sichuan University, Chengdu, 610064, China.
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15
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Ismael MA, Elyamine AM, Moussa MG, Cai M, Zhao X, Hu C. Cadmium in plants: uptake, toxicity, and its interactions with selenium fertilizers. Metallomics 2020; 11:255-277. [PMID: 30632600 DOI: 10.1039/c8mt00247a] [Citation(s) in RCA: 250] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cd is the third major contaminant of greatest hazard to the environment after mercury and lead and is considered as the only metal that poses health risks to both humans and animals at plant tissue concentrations that are generally not phytotoxic. Cd accumulation in plant shoots depends on Cd entry through the roots, sequestration within root vacuoles, translocation in the xylem and phloem, and Cd dilution within the plant shoot throughout its growth. Several metal transporters, processes, and channels are involved from the first step of Cd reaching the root cells and until its final accumulation in the edible parts of the plant. It is hard to demonstrate one step as the pivotal factor to decide the Cd tolerance or accumulation ability of plants since the role of a specific transporter/process varies among plant species and even cultivars. In this review, we discuss the sources of Cd pollutants, Cd toxicity to plants, and mechanisms of Cd uptake and redistribution in plant tissues. The metal transporters involved in Cd transport within plant tissues are also discussed and how their manipulation can control Cd uptake and/or translocation. Finally, we discuss the beneficial effects of Se on plants under Cd stress, and how it can minimize or mitigate Cd toxicity in plants.
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Affiliation(s)
- Marwa A Ismael
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Research Center of Trace Elements, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
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16
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Adamczyk-Szabela D, Lisowska K, Romanowska-Duda Z, Wolf WM. Combined cadmium-zinc interactions alter manganese, lead, copper uptake by Melissa officinalis. Sci Rep 2020; 10:1675. [PMID: 32015369 PMCID: PMC6997233 DOI: 10.1038/s41598-020-58491-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/10/2020] [Indexed: 11/08/2022] Open
Abstract
Farmland soil typical for the Polish rural environment was used in pot experiment to estimate the impact of cadmium and zinc on the manganese, lead and copper uptake by lemon balm (Melissa officinalis L). Bioavailable and total forms of investigated metals in soil and metal concentrations in plants were determined by atomic absorption spectrometry. The plant photosynthesis indicators were also examined. Intensification of photosynthesis upon the high zinc and cadmium soil supplementation was observed. This effect was not detected at low metal concentrations. ANOVA proved that cadmium and zinc treatments influenced manganese, lead and copper transfer from soil and their concentration in plants. Zinc uptake and accumulation in either roots or above-ground parts in plant was inversely proportional to cadmium concentration in soil. Manganese concentration in roots decreased upon the soil supplementation with either zinc or cadmium. It suggests that the latter ions are transported via symplastic pathways and compete with manganese for similar transporters. The opposite situation was observed for lead and copper. Soil supplementation with cadmium and zinc affects manganese, lead and copper concentrations and photosynthesis intensity in lemon balm plant. The following combined interactions in either normal or stress conditions are important indicators of the migration pathways.
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Affiliation(s)
- Dorota Adamczyk-Szabela
- Lodz University of Technology, Institute of General and Ecological Chemistry, 90-924, Lodz, Zeromskiego 116, Poland.
| | - Katarzyna Lisowska
- Lodz University of Technology, Institute of General and Ecological Chemistry, 90-924, Lodz, Zeromskiego 116, Poland
| | - Zdzisława Romanowska-Duda
- University of Lodz, Laboratory of Plants Ecophysiology. Faculty of Biology and Environmental Protection, 90-237, Lodz, Banacha 12/16, Poland
| | - Wojciech M Wolf
- Lodz University of Technology, Institute of General and Ecological Chemistry, 90-924, Lodz, Zeromskiego 116, Poland
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17
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Liang Y, Zhou C, Guo Z, Huang Z, Peng C, Zeng P, Xiao X, Xian Z. Removal of cadmium, lead, and zinc from multi-metal-contaminated soil using chelate-assisted Sedum alfredii Hance. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:28319-28327. [PMID: 31372951 DOI: 10.1007/s11356-019-06041-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Biodegradable chelator-assisted phytoextraction is an effective method to enhance remediation efficiency of heavy metals. A greenhouse experiment was conducted to investigate the effects of S,S-ethylenediamine disuccinic acid (EDDS), citric acid (CA), and oxalic acid (OA) application before planting on the biomass and physiological characteristics of hyperaccumulator Sedum alfredii Hance, and its cadmium (Cd), lead (Pb), and zinc (Zn) uptake. The results showed that EDDS and CA slightly inhibited the plant growth, while the 1.0 mmol kg-1 (OA-1) and 2.5 mmol kg-1 OA (OA-2.5) addition produced 55.3% and 35.2% greater shoot biomass compared with the control, which may be related to that OA can produce higher leaf chlorophyll and soluble protein contents, as well as lower concentrations of malondialdehyde. At the same time, the concentrations of Pb and Zn in leaf after OA-2.5 treatment significantly increased by 127% and 28.4%, and the Cd, Pb, and Zn uptake by shoot was obviously enhanced by 21.5%, 117%, and 44.9% for OA-1 addition and by 39.1%, 80.0%, and 58.3% for OA-2.5 addition, respectively, in comparison with the control (P < 0.05). The reductions in available contents of Cd, Pb, and Zn in soil were observed after phytoextraction by Sedum alfredii Hance when OA was treated. These findings imply that OA was suitable for facilitating Sedum alfredii Hance to remove Cd, Pb, and Zn in co-contaminated soil.
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Affiliation(s)
- Yuqin Liang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Cong Zhou
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Zhongting Huang
- Hunan Province Environmental Monitoring Centre, Changsha, 410004, China
| | - Chi Peng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Peng Zeng
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Zhenfen Xian
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
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18
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Farooq MU, Tang Z, Zheng T, Asghar MA, Zeng R, Su Y, Ei HH, Liang Y, Zhang Y, Ye X, Jia X, Zhu J. Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice. Biomolecules 2019; 9:E247. [PMID: 31238551 PMCID: PMC6627080 DOI: 10.3390/biom9060247] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/20/2019] [Accepted: 06/22/2019] [Indexed: 12/04/2022] Open
Abstract
Cadmium (Cd) is a well-known metal imposing threats to human health, and it can be accumulated in polished rice over the permitted range of 0.2 mg kg-1 (GB 2762-2017). It has been reported that selenium (Se) application decreases Cd uptake. Se-rich diets have gained attention recently, but the potential of Se-rich rice in mitigating Cd stress needs further investigation. In this study, a pot experiment in the field was conducted to assess the influence of environmental factors and exogenous split application of Se on the nutritional status of rice under Cd stress. The results indicated that the increased fertilizer treatment in soil bulk linearly increased the metal content in rice grains. Approximately 50-70% of metal was recovered in rice tissues, while 5-20% of the metal that was applied leached down into the soil. A Se concentration of 0.4 mg kg-1 could significantly improve the total Se content in grain and mitigate Cd toxicity (1 mg kg-1) below the permitted range. Panicles and roots were more active for total Se accumulation in Se-rich and non-Se-rich rice, respectively. Polishing and milling operations can significantly reduce the Cd content, as rice bran in rice tissues accumulated most of the metal's residues. The late matured rice cultivars consumed more heat units, and more metal contents were found in them. Collectively, it was found that Se can mitigate Cd toxicity, but the rice cultivation at T2 (high Cd; 2 mg kg-1 and Se; 1 mg kg-1) increased the metal uptake capability and health-risk index in polished rice, with its Se content heightened over permitted range of 0.04 to 0.30 mg kg-1 (GB/T 22499-2008). However, further molecular studies are required, in order to completely access the inverted Se accumulation behavior in rice tissues at high Cd soil stress.
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Affiliation(s)
- Muhammad Umer Farooq
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Zhichen Tang
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Tengda Zheng
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Muhammad Ahsan Asghar
- College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Rui Zeng
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
- Dujiangyan Agricultural and Rural Bureau, Dujiangyan 611830, Sichuan, China.
| | - Yang Su
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Hla Hla Ei
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Yuanke Liang
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Yujie Zhang
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Xiaoying Ye
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Xiaomei Jia
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
| | - Jianqing Zhu
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China.
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19
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Liang Y, Wang X, Guo Z, Xiao X, Peng C, Yang J, Zhou C, Zeng P. Chelator-assisted phytoextraction of arsenic, cadmium and lead by Pteris vittata L. and soil microbial community structure response. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:1032-1040. [PMID: 31020854 DOI: 10.1080/15226514.2019.1594685] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Using biodegradable chelators to assist in phytoextraction may be an effective approach to enhance the heavy-metal remediation efficiencies of plants. A pot experiment was conducted to investigate the effects of ethylenediamine disuccinic acid (EDDS), citric acid (CA), and oxalic acid (OA) on the growth of the arsenic (As) hyperaccumulator Pteris vittata L., its arsenic (As), cadmium (Cd), and lead (Pb) uptake and accumulation, and soil microbial responses in multi-metal(loid)-contaminated soil. The addition of 2.5-mmol kg-1 OA (OA-2.5) produced 26.7 and 14.9% more rhizoid and shoot biomass, respectively compared with the control, while EDDS and CA treatments significantly inhibited plant growth. The As accumulation in plants after the OA-2.5 treatment increased by 44.2% and the Cd and Pb accumulation in plants after a 1-mmol kg-1 EDDS treatment increased by 24.5 and 19.6%, respectively. Soil urease enzyme activities in OA-2.5 treatment were significantly greater than those in the control and other chelator treatments (p < 0.05). A PCR-denatured gradient gel electrophoresis analysis revealed that with the addition of EDDS, CA and OA enhanced soil microbial diversity. It was concluded that the addition of OA-2.5 was suitable for facilitating phytoremediation of soil As and did not have negative effects on the microbial community.
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Affiliation(s)
- Yuqin Liang
- a School of Metallurgy and Environment, Central South University , Changsha , China
| | - Xiaohui Wang
- a School of Metallurgy and Environment, Central South University , Changsha , China
| | - Zhaohui Guo
- a School of Metallurgy and Environment, Central South University , Changsha , China
| | - Xiyuan Xiao
- a School of Metallurgy and Environment, Central South University , Changsha , China
| | - Chi Peng
- a School of Metallurgy and Environment, Central South University , Changsha , China
| | - Jun Yang
- b Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences , Beijing , China
| | - Cong Zhou
- a School of Metallurgy and Environment, Central South University , Changsha , China
| | - Peng Zeng
- a School of Metallurgy and Environment, Central South University , Changsha , China
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20
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Shi W, Zhang Y, Chen S, Polle A, Rennenberg H, Luo ZB. Physiological and molecular mechanisms of heavy metal accumulation in nonmycorrhizal versus mycorrhizal plants. PLANT, CELL & ENVIRONMENT 2019; 42:1087-1103. [PMID: 30375657 DOI: 10.1111/pce.13471] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 06/08/2023]
Abstract
Uptake, translocation, detoxification, and sequestration of heavy metals (HMs) are key processes in plants to deal with excess amounts of HM. Under natural conditions, plant roots often establish ecto- and/or arbuscular-mycorrhizae with their fungal partners, thereby altering HM accumulation in host plants. This review considers the progress in understanding the physiological and molecular mechanisms involved in HM accumulation in nonmycorrhizal versus mycorrhizal plants. In nonmycorrhizal plants, HM ions in the cells can be detoxified with the aid of several chelators. Furthermore, HMs can be sequestered in cell walls, vacuoles, and the Golgi apparatus of plants. The uptake and translocation of HMs are mediated by members of ZIPs, NRAMPs, and HMAs, and HM detoxification and sequestration are mainly modulated by members of ABCs and MTPs in nonmycorrhizal plants. Mycorrhizal-induced changes in HM accumulation in plants are mainly due to HM sequestration by fungal partners and improvements in the nutritional and antioxidative status of host plants. Furthermore, mycorrhizal fungi can trigger the differential expression of genes involved in HM accumulation in both partners. Understanding the molecular mechanisms that underlie HM accumulation in mycorrhizal plants is crucial for the utilization of fungi and their host plants to remediate HM-contaminated soils.
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Affiliation(s)
- Wenguang Shi
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Yuhong Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Shaoliang Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Andrea Polle
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
- Forest Botany and Tree Physiology, University of Goettingen, 37077, Göttingen, Germany
| | - Heinz Rennenberg
- Institute for Forest Sciences, University of Freiburg, 79110, Freiburg, Germany
| | - Zhi-Bin Luo
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
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21
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Wu J, Mock HP, Giehl RFH, Pitann B, Mühling KH. Silicon decreases cadmium concentrations by modulating root endodermal suberin development in wheat plants. JOURNAL OF HAZARDOUS MATERIALS 2019; 364:581-590. [PMID: 30388642 DOI: 10.1016/j.jhazmat.2018.10.052] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 10/16/2018] [Accepted: 10/18/2018] [Indexed: 05/10/2023]
Abstract
Silicon (Si) can alleviate cadmium (Cd) toxicity in many plants, but mechanisms underlying this beneficial effect are still lacking. In this study, the roles of Si in time-dependent apoplastic and symplastic Cd absorption by roots of wheat plants were investigated. Results showed that, during short-term Cd exposure, the symplastic pathway of Cd in roots was not significantly affected by Si. Cell wall properties and cell wall-bound Cd regarding the apoplastic pathway were unaffected by Si either. Nevertheless, Cd concentrations in the apoplastic fluid of roots were decreased by Si. The reason could be that Si delayed endodermal suberization of roots resulting in promoted apoplastic Cd translocation to shoots, thus decreasing Cd in the apoplastic fluid of roots after short-term Cd stress. By contrast, after long-term Cd stress, cell wall properties and the expression of genes related to Cd influx and transport were unaffected. Intriguingly, Si up-regulated the expression of the Cd efflux-related gene TaTM20 and repressed apoplastic Cd translocation to shoots, which might contribute to decrease of Cd after long-term Cd exposure. Taken together, these results indicate that Si-dependent decrease in root Cd concentrations during short-term Cd exposure helps plants to mitigate Cd toxicity in the long-term.
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Affiliation(s)
- Jiawen Wu
- College of Life Sciences, Yan'an University, Yan'an, Shaanxi, 716000, China; Shaanxi Key Laboratory of Chinese Jujube, Yan'an University, Yan'an, Shaanxi, 716000, China; Institute of Plant Nutrition and Soil Science, Kiel University, Hermann-Rodewald-Str. 2, 24118, Kiel, Germany.
| | - Hans-Peter Mock
- Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research, 06466, Gatersleben, Germany
| | - Ricardo F H Giehl
- Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research, 06466, Gatersleben, Germany
| | - Britta Pitann
- Institute of Plant Nutrition and Soil Science, Kiel University, Hermann-Rodewald-Str. 2, 24118, Kiel, Germany
| | - Karl Hermann Mühling
- Institute of Plant Nutrition and Soil Science, Kiel University, Hermann-Rodewald-Str. 2, 24118, Kiel, Germany.
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22
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Guo D, Ali A, Ren C, Du J, Li R, Lahori AH, Xiao R, Zhang Z, Zhang Z. EDTA and organic acids assisted phytoextraction of Cd and Zn from a smelter contaminated soil by potherb mustard (Brassica juncea, Coss) and evaluation of its bioindicators. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 167:396-403. [PMID: 30366273 DOI: 10.1016/j.ecoenv.2018.10.038] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 10/07/2018] [Accepted: 10/10/2018] [Indexed: 05/24/2023]
Abstract
Phytoremediation of contaminated soil is an in-situ reclamation technique for removal of potentially toxic metals through hyperaccumulator plants. Potherb mustard (Brassica juncea, Coss.) is less explored for its assisted phytoextraction potential to restore and accelerate potentially toxic metals removal from smelter-contaminated soil. In this study, different levels of ethylene diamine tetraacetic acid (EDTA) alone and combined with citric acid (CA) and oxalic acid (OA) were applied in a greenhouse pot experiment. Chelates added on 25th d and 25/35th d after sowing, enhanced cadmium (Cd) and zinc (Zn) bioavailability in soil due to complexation. As a result, Cd and Zn in shoot and root were significantly amplified by 1.7, 2.15 and 1.93, 2.7 folds than control, respectively. Shoot and root dry weight significantly reduced and ranged between 4.13-9.91 and 0.21-0.77 g pot-1, respectively. The toxicity induced by potentially toxic metals in plant imposed a series of biological responses. Plant antioxidants like Phenylalanine ammomialyase (PAL), polyphenol oxidase (PPO) Catalase (CAT) content increased, except the peroxidase (POD) with the addition of chelating agents. Besides, biological concentration factor (BCF) of Cd and Zn, translocation factor (TF) of Cd were notably elevated (>1.0), while TF of Zn was reduced. Pearson correlation analysis showed a positive relation between DTPA-extractable and shoot concentration of Cd and Zn, whereas it showed negative correlation with plant dry weight. In general, chelate-assisted phytoremediation of smelter contaminated soil proved effective in this study, and followed the order: EDTA > EDTA + CA ≈ EDTA + OA > CK.
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Affiliation(s)
- Di Guo
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Amjad Ali
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Chunyan Ren
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Juan Du
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ronghua Li
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Altaf Hussain Lahori
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ran Xiao
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ziyang Zhang
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zengqiang Zhang
- College of Natural Resources & Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.
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23
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Fei L, Xu P, Dong Q, Mo Q, Wang Z. Young leaf protection from cadmium accumulation and regulation of nitrilotriacetic acid in tall fescue (Festuca arundinacea) and Kentucky bluegrass (Poa pratensis). CHEMOSPHERE 2018; 212:124-132. [PMID: 30144673 DOI: 10.1016/j.chemosphere.2018.08.072] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 07/26/2018] [Accepted: 08/16/2018] [Indexed: 05/09/2023]
Abstract
Phytoextraction efficiency of cadmium (Cd) contaminated soil mainly depended upon the mechanism of plants in absorption, translocation, distribution, and detoxification of Cd. A pot experiment was designed to investigate Cd distribution and accumulation among the different leaves of tall fescue (Festuca arundinacea) and Kentucky bluegrass (Poa pratensis) and its regulation by Nitrilotriacetic acid (NTA), a biodegradable chelating agent. The results showed that Cd concentrations in the senescent and dead leaves were 3.2 and 5.3 fold of that in the emerging leaves of tall fescue, and 19.3 and 25.1 fold of that in the emerging leaves of Kentucky bluegrass, respectively. The lower Cd concentrations were maintained in the emerging and mature leaves to avoid Cd toxicity. In the emerging and mature leaves, Cd was mainly accumulated in the vascular bundles and epidermis. No Cd dithizonate color was observed in the mesophyll tissues of Kentucky bluegrass and only minor Cd was observed in the mesophyll tissues of tall fescue. In the senescent leaves, Cd dithizonate complexes were located in the protoplasts and cell walls of all leaf tissues. NTA greatly promoted Cd translocation and distribution to the senescent and dead leaves of tall fescue, but no significant effect was observed in Kentucky bluegrass. Our results indicate that a young leaf protection mechanism might be involved in their Cd hypertolerance. The Cd preferential accumulation could lead a novel phytoextraction strategy by the continuously harvesting the senescent and dead leaves of tall fescue and Kentucky bluegrass.
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Affiliation(s)
- Ling Fei
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, PR China; Zhuhai College of Jilin University, Zhuhai, Guangdong, 519041, PR China
| | - PeiXian Xu
- Shanghai Administrative & Directive Station for Afforestation, Shanghai, 200020, PR China
| | - Qin Dong
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, PR China
| | - Qi Mo
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, PR China
| | - ZhaoLong Wang
- School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240, PR China.
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24
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Zare AA, Khoshgoftarmanesh AH, Malakouti MJ, Bahrami HA, Chaney RL. Root uptake and shoot accumulation of cadmium by lettuce at various Cd:Zn ratios in nutrient solution. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 148:441-446. [PMID: 29102904 DOI: 10.1016/j.ecoenv.2017.10.045] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 10/18/2017] [Accepted: 10/22/2017] [Indexed: 05/27/2023]
Abstract
Cadmium (Cd) is toxic to animals and humans after it accumulates over decades in the kidney cortex. Food crops grown in Cd-contaminated soils are the primary sources of excessive Cd entry into humans. Although plant available Zn concentration in soil is an important factor which can greatly reduce Cd uptake by plant roots and its translocation into the edible parts, Cd:Zn ratio is suggested to be a more important factor in comparison with Zn concentration alone in determining Cd uptake by plants. In the present study, the physiological mechanisms of Cd absorption by roots and its translocation to leaves of lettuce (Lactuca sativa L.) at various Cd:Zn ratios in the rooting media were investigated. For this purpose, seedlings of hydroponically-grown lettuce were exposed to combinations of four Zn (0, 12.5, 50 and 100μM) and four Cd (0, 0.5, 1 and 10μM) concentrations providing different ratios of Cd:Zn. At each level of Cd, decreasing the Cd:Zn ratio by increasing Zn concentration in the nutrient solution caused significant reduction of root symplastic Cd and also reduced Cd loading into the xylem and Cd transport to and accumulation in leaves. The highest root symplastic Cd (1087mg/kg-1 Dry Weight [DW]) and shoot Cd concentrations (64mg/kg-1 DW) were observed at the highest Cd:Zn ratio of = 0.8 (Zn = 12.5, Cd = 10). At the Cd:Zn ratios of ≤ 0.01, shoot Cd concentration was less than the Detection Limit (< 0.02mg/kg DW). Decreasing Cd:Zn ratio in nutrient solution was accompanied with significant increase in root apoplastic Cd and decrease in the root symplastic Cd. According to the obtained results, at the Cd:Zn ratio equal to 0.01 and less, Cd concentration in lettuce shoots decreased to < 0.02mg/kg.
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Affiliation(s)
- A A Zare
- Department of Soil Sciences, College of Agriculture, Isfahan University of Technology, 84156-83111 Isfahan, Iran
| | - A H Khoshgoftarmanesh
- Department of Soil Sciences, College of Agriculture, Isfahan University of Technology, 84156-83111 Isfahan, Iran.
| | - M J Malakouti
- Department of Soil Sciences, College of Agriculture, University of Tarbiat Modares, 14115-336 Tehran, Iran
| | - H A Bahrami
- Department of Soil Sciences, College of Agriculture, University of Tarbiat Modares, 14115-336 Tehran, Iran
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25
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Jin X, Chen X, Cheng Q, Zhang N, Cai S, Ren J. Non-isothermal crystallization kinetics of ramie fiber-reinforced polylactic acid biocomposite. RSC Adv 2017. [DOI: 10.1039/c7ra09418c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The addition of RF weakened the interaction between PLA chains and reduced the energy barrier of PLA during crystallization.
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Affiliation(s)
- Xing Jin
- Institute of Nano and Bio-Polymeric Materials
- Key Laboratory of Advanced Civil Engineering Materials (Tongji University)
- Ministry of Education
- School of Material Science and Engineering
- Tongji University
| | - Xie Chen
- Institute of Nano and Bio-Polymeric Materials
- Key Laboratory of Advanced Civil Engineering Materials (Tongji University)
- Ministry of Education
- School of Material Science and Engineering
- Tongji University
| | - Qian Cheng
- Institute of Nano and Bio-Polymeric Materials
- Key Laboratory of Advanced Civil Engineering Materials (Tongji University)
- Ministry of Education
- School of Material Science and Engineering
- Tongji University
| | - Naiwen Zhang
- Shanghai Tong-Jie-Liang Biomaterials Co. Ltd
- Shanghai 200438
- China
| | - Shenyang Cai
- Institute of Nano and Bio-Polymeric Materials
- Key Laboratory of Advanced Civil Engineering Materials (Tongji University)
- Ministry of Education
- School of Material Science and Engineering
- Tongji University
| | - Jie Ren
- Institute of Nano and Bio-Polymeric Materials
- Key Laboratory of Advanced Civil Engineering Materials (Tongji University)
- Ministry of Education
- School of Material Science and Engineering
- Tongji University
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26
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Zhao L, Li T, Yu H, Zhang X, Zheng Z. Effects of [S,S]-ethylenediaminedisuccinic acid and nitrilotriacetic acid on the efficiency of Pb phytostabilization by Athyrium wardii (Hook.) grown in Pb-contaminated soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 182:94-100. [PMID: 27454100 DOI: 10.1016/j.jenvman.2016.07.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 07/13/2016] [Accepted: 07/14/2016] [Indexed: 06/06/2023]
Abstract
Chelate-assisted phytoextraction with biodegradable chelants has been demonstrated as an efficient method to enhance heavy metal remediation efficiency by plants, while there is little available information on phytostabilization. A pot experiment was conducted to investigate the effects of biodegradable [S,S]-ethylenediaminedisuccinic acid (EDDS) and nitrilotriacetic acid (NTA) on plant growth and Pb accumulation of Pb phytostabilizer Athyrium wardii (Hook.) grown in Pb contaminated soils and to explore the feasibility of chelate-assisted phytostabilization. Greater adverse effects on plant biomass under high EDDS treatments were observed than NTA treatments. Significant increase of shoot Pb concentrations of A. wardii was noticed with increasing NTA and EDDS dosages, while EDDS induced higher shoot Pb concentrations than NTA. Moreover, root Pb concentrations of A. wardii under NTA treatments were 1.18-1.28-time higher than EDDS treatments, and a peak value of root Pb concentrations was observed at 2 mmol kg(-1) of NTA. Shoot Pb accumulations significantly increased with increasing dosages, and EDDS treatments caused a 1.44-1.6-time increase of shoot Pb accumulation than NTA. Root Pb accumulations under NTA treatments were 1.18-1.28-time higher than EDDS treatments. Maximum root Pb accumulation (155.5 mg plant(-1)) was found at 2 mmol kg(-1) of NTA on the 14th day. Higher BCF values and lower TF values were found under NTA treatments as compared to EDDS treatments. Available Pb concentrations in soil significantly increased on the 7th day with increasing NTA and EDDS dosages, then gradually decreased on the 14th day. Soil pH slightly decreased with increasing NTA and EDDS dosages. Therefore, chelate-assisted phytostabilization could be a feasible way to enhance the efficiency of Pb phytostabilization by A. wardii.
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Affiliation(s)
- Li Zhao
- College of Resources and Environmental Science, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Tingxuan Li
- College of Resources and Environmental Science, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China.
| | - Haiying Yu
- College of Resources and Environmental Science, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Xizhou Zhang
- College of Resources and Environmental Science, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Zicheng Zheng
- College of Resources and Environmental Science, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
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27
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Majewska M, Słomka A. Levels of Organic Compounds, Number of Microorganisms and Cadmium Accumulation in Festuca ovina Hydroponic Culture. Pol J Microbiol 2016; 65:191-200. [PMID: 30015443 DOI: 10.5604/17331331.1204479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2015] [Indexed: 11/13/2022] Open
Abstract
Understanding the microbiological, biochemical and physiological aspects of phytoremediation of soil and water environments polluted to different degrees with heavy metals has very important theoretical and practical implications. In this study, a comparison was made between total cadmium concentration in root and shoot tissues as well as concentrations of particular fractions of Cd immobilized by roots of Festuca ovina (Sheep's fescue) hydroponically cultivated in nutrient solutions supplemented with 1 μg Cd ml-1 and those cultivated at 10 μg Cd ml-1. After three weeks of F. ovina cultivation, the number of bacterial CFU and the amounts of organic chelators, siderophores, proteins and reducing sugars in the growth medium and on the root surface were higher at 10 than at 1 μg Cd ml-1. The grass also reacted to the high Cd concentration by a decrease in plant growth and dehydrogenase activity in root tissues. The concentration of Cd determined in fractions bound with different strength in roots was significantly dependent on Cd concentration in the growth medium. When the plants were grown at 1 μg Cd ml-1, 9% of the immobilized cadmium was loosely bound to the root surface, 20% was exchangeable adsorbed, and 28% was bound by chelation; at 10 μg Cd ml-1, the respective values were 12%, 25%, and 20%. About 43% of the immobilized cadmium remained in roots after sequential extraction, and bioaccumulation factors in shoots had the same values independently of Cd concentra-tion. At both Cd concentrations, the cadmium translocation index for F. ovina was low (< 1), which is why this grass can be recommended for phytostabilization of the metal under study.
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Affiliation(s)
- Małgorzata Majewska
- Department of Environmental Microbiology, Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University, Lublin, Poland
| | - Anna Słomka
- Department of Environmental Microbiology, Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University, Lublin, Poland
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