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Liu J, Jiang X, Zhang X, Jiang P, Yu G. Rotation of Celosia argentea and Sedum plumbizincicola promotes Cd phytoextraction efficiency. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134551. [PMID: 38743979 DOI: 10.1016/j.jhazmat.2024.134551] [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: 01/02/2024] [Revised: 04/23/2024] [Accepted: 05/03/2024] [Indexed: 05/16/2024]
Abstract
Most hyperaccumulators cannot maintain vigorous growth throughout the year, which may result in a low phytoextraction efficiency for a few months. In the present study, rotation of two hyperaccumulators is proposed to address this issue. An 18-month field experiment was conducted to evaluate the phytoextraction efficiency of Cd by the monoculture and rotation of Celosia argentea and Sedum plumbizincicola. The results showed that rotation increased amount of extracted Cd increased by 2.3 and 1.6 times compared with monoculture of C. argentea and S. plumbizincicola. In rotation system, the biomass of S. plumbizincicola and Cd accumulation in C. argentea increased by 54.4% and 40.7%, respectively. Rotation reduced fallow time and increased harvesting frequency, thereby enhancing Cd phytoextraction. Planting C. argentea significantly decreased soil pathogenic microbes and increased the abundances of plant growth-promoting rhizobacteria (PGPR) and 1-aminocyclopropane-1-carboxylate (ACC) deaminase genes, which may be beneficial for the growth of S. plumbizincicola. Planting S. plumbizincicola increased the abundance of sulfur oxidization (SOX) system genes and decreased soil pH (p < 0.05), thereby increasing the Cd uptake by C. argentea. These findings indicated that rotation of C. argentea and S. plumbizincicola is a promising method for promoting Cd phytoextraction.
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Affiliation(s)
- Jie Liu
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China; Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, MNR, Guilin 541004, China.
| | - Xusheng Jiang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China
| | - Xuehong Zhang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China; Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, MNR, Guilin 541004, China
| | - Pingping Jiang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China
| | - Guo Yu
- Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, MNR, Guilin 541004, China
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2
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Huang R, Xing C, Yang Y, Yu W, Zeng L, Li Y, Tan Z, Li Z. Phytoremediation and environmental effects of three Amaranthaceae plants in contaminated soil under intercropping systems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169900. [PMID: 38199378 DOI: 10.1016/j.scitotenv.2024.169900] [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: 10/20/2023] [Revised: 12/14/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024]
Abstract
Intercropping is a widely used agricultural system; however, the effect of intercropping between accumulator plants on phytoextraction in heavy metal-contaminated soils remains unknown. Here, a field experiment was conducted to investigate the phytoextraction efficiency and related environmental effects of three Amaranthaceae plants (Amaranthus hypochondriacus, Celosia argentea, and Pfaffia glomerata) using mono- and intercropping models. In monocropping, the total biomass of A. hypochondriacus was only 51.2 % of that of C. argentea. Compared with monocropping, intercropping reduced the fresh weight per plant of A. hypochondriacus by 53.0 % (intercropping with C. argentea) and 40.5 % (intercropping with P. glomerata) but increased the biomass per plant of C. argentea and P. glomerata by 128.2 and 14.2 %, respectively. The Cd uptake of the three plants in the monocropping models showed the following trend: C. argentea > P. glomerata > A. hypochondriacus. Interplanting A. hypochondriacus and C. argentea further increased the phytoextraction efficiency by 361.2 % (compared with A. hypochondriacus monocropping) and 52.0 % (compared with C. argentea monocropping). Soil exchangeable Cd, Pb, Cu, Zn, K, and P, soil N-NO3- and N-NH4+, soil common bacteria and arbuscular mycorrhiza (AM) fungi, and soil total organic carbon (TOC) play key roles in Cd and Pb uptake by the three accumulator plants (p < 0.05). The biomass of common bacteria, Gm+, Gm- bacteria, fungi, AM fungi, and actinomycetes increased with the three accumulators planted in the mono- and intercropping models. Compared with C. argentea monocropping, the biomass of soil microbes in the rhizosphere soil was obviously increased in the intercropping A. hypochondriacus and C. argentea models. These results suggest that interplanting A. hypochondriacus and C. argentea can increase Cd removal efficiency from Cd-contaminated soils, and this model could be recommended to remediate Cd-contaminated soils on a field scale.
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Affiliation(s)
- Rong Huang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Chen Xing
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Yuanru Yang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Wang Yu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Liangbin Zeng
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China
| | - Yanqiong Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zhijian Tan
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410221, China.
| | - Zhian Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
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Zhang J, Na M, Wang Y, Ge W, Zhou J, Zhou S. Cadmium levels and soil pH drive structure and function differentiation of endophytic bacterial communities in Sedum plumbizincicola: A field study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168828. [PMID: 38029975 DOI: 10.1016/j.scitotenv.2023.168828] [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: 09/09/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
Sedum plumbizincicola is a promising hyperaccumulator for heavy metal phytoremediation. It grows in heavy metal polluted soil and stores specific endophyte resources with heavy metal tolerance or growth promotion characteristics. In this study, the endophyte communities of S. plumbizincicola, growing naturally in the field (two former mining locations and one natural location) were investigated, and their structure and function were comparatively studied. The bioaccumulation and translocation characteristics of cadmium (Cd) and selenium (Se) in S. plumbizincicola were also evaluated. The results showed that the heavy metal pollution reduced the richness and diversity of endophyte communities. Soil pH and Cd concentration could be the key factors affecting the composition of the endophyte community. Co-occurrence network analysis identified that 22 keystone taxa belonging to Actinobacteriota, Firmicutes, Myxococcota and Proteobacteria were positively correlated with Cd bioaccumulation and translocation. The predicted endophyte metabolic pathways were enriched in physiological metabolism, immune system, and genetic Information processing. These findings may help to understand how endophytes assist host plants to enhance their adaptability to harsh environments, and provide a basis for further exploration of plant-endophyte interactions and improvement in phytoremediation efficiency.
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Affiliation(s)
- Jinming Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Meng Na
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241002, China; Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Yukun Wang
- College of Resources & Environment, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Wen Ge
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Jihai Zhou
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241002, China; Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, Anhui Normal University, Wuhu, Anhui 241002, China
| | - Shoubiao Zhou
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui 241002, China; Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, Anhui Normal University, Wuhu, Anhui 241002, China.
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Liu Y, Huang L, Liu Q, Li Z, Liu C, Yuan J, Liao J, Luo L, Yu C, Feng Y. Effects of tomato-Sedum alfredii Hance intercropping on crop production and Cd remediation as affected by soil types. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:3696-3706. [PMID: 38091222 DOI: 10.1007/s11356-023-31318-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 11/28/2023] [Indexed: 01/19/2024]
Abstract
Intercropping crops with hyperaccumulators is a proven model for coupling crop safety production and soil heavy metal remediation. And both crop genotypes and soil properties might have great impacts on the effect of intercropping. Therefore, a greenhouse pot experiment was designed to investigate the effects of intercropping different tomato varieties with the cadmium (Cd) hyperaccumulator Sedum alfredii Hance (S. alfredii Hance) on different soils. The results showed that intercropping promoted Cd uptake by S. alfredii Hance and reduced soil total Cd concentration. There was no significant effect of intercropping on tomato yield and Cd concentration. Different tomato varieties had different effects on tomato yield and Cd concentration. The yield of cherry tomato was 1.04 times higher than that of common large fruit tomato, while the Cd concentration in all parts was lower than that of common large fruit tomato. Different typical zonal soils had different effects on tomato production and soil remediation. And among the four studied soils, tomatoes grown on ZJ soil had the highest yields and lowest fruit Cd concentration, making them more suitable for remediation coupled with safety production. This study provided a comprehensive analysis of tomato production benefits and soil remediation effects, which could be useful as a guide in vegetable safety production coupled with soil remediation practices in the Cd-contaminated greenhouse.
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Affiliation(s)
- Yaru Liu
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lukuan Huang
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Qizhen Liu
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhesi Li
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chanjuan Liu
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jie Yuan
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jiayuan Liao
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lishan Luo
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chao Yu
- Livestock Industrial Development Center of Shengzhou, Shengzhou, 312400, China
| | - Ying Feng
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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Wang Y, Zhou T, Wang W, Zhao J, Li Z, Ge Y, Wang Z, Wu L, Christie P. Phytoextraction of highly cadmium-polluted agricultural soil by Sedum plumbizincicola: An eight-hectare field study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167216. [PMID: 37734600 DOI: 10.1016/j.scitotenv.2023.167216] [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: 07/06/2023] [Revised: 08/26/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
Phytoextraction with Sedum plumbizincicola is an in-situ, environmentally friendly and highly efficient remediation technique for slightly Cd-polluted soils but it remains a challenge to remediate highly Cd-polluted soils under field conditions. Here, an 8-ha field experiment was conducted to evaluate the feasibility of repeated phytoextraction by S. plumbizincicola of a highly Cd-polluted acid agricultural soil (pH 5.61, [Cd] 2.58 mg kg-1) in Yunnan province, southwest China. Mean shoot dry biomass production, Cd concentration and Cd uptake were 1.95 t ha-1, 170 mg kg-1 and 339 g ha-1 at the first harvest, and 0.91 t ha-1, 172 mg kg-1 and 142 g ha-1 at the second harvest. After two seasons of phytoextraction, soil total and CaCl2-extractable Cd concentrations decreased from 2.58 ± 0.69 to 1.53 ± 0.43 mg kg-1 and 0.22 ± 0.12 to 0.14 ± 0.07 mg kg-1, respectively. Stepwise multiple linear regression analysis shows that the shoot Cd concentration and uptake of S. plumbizincicola were positively related to soil CaCl2-extractable Cd concentrations, especially in the first crop. A negative relationship indicates that soil organic matter content played an important role in soil Cd availability and shoot Cd concentration in the first crop. In addition, the rhizosphere effect on soil CaCl2-extractable Cd concentration was negatively correlated with soil pH in the first crop. The accuracy of the calculation of soil Cd phytoextraction efficiency at field scale depends on all of the following factors being considered: shoot Cd uptake, cropping pattern, standardized sampling points, and the leaching and surface runoff of Cd. Phytoextraction with S. plumbizincicola is a feasible technique for efficient Cd removal from highly polluted soils and wide variation in soil properties can influence phytoextraction efficiency at the field scale.
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Affiliation(s)
- Yuyang Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Tong Zhou
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Wenyong Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Jie Zhao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhu Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yanyan Ge
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhaoyang Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Longhua Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Peter Christie
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Zhou T, Huang H, Mu T, Wang Y, Zhou J, Li X, Wu L, Christie P. Does phytoextraction with Sedum plumbizincicola increase cadmium leaching from polluted agricultural soil? INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:241-249. [PMID: 37463004 DOI: 10.1080/15226514.2023.2236228] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Sedum plumbizincicola is a cadmium (Cd) and zinc hyperaccumulator that can activate Cd by rhizosphere acidification. However, there is little understanding of the Cd leaching risk from polluted soil during phytoextraction process. Here, pot and column experiments were conducted to monitor soil Cd leaching characteristics under different rainfall simulation conditions during S. plumbizincicola phytoextraction. Soil Cd leaching increased significantly with increasing simulated rainfall intensity. Compared with normal rainfall (NR), weak rainfall (WR) resulted in a 34.3% decrease in Cd uptake by S. plumbizincicola and also led to a 68.7% decline in Cd leaching. In contrast, Cd leaching under heavy rainfall (HR) was 2.12 times that of NR in the presence of S. plumbizincicola. After two successive growing periods, phytoextraction resulted in a 53.5-66.4% decline in the amount of soil Cd leached compared with controls in which S. plumbizincicola was absent. Even compared with maize cropping as a control, S. plumbizincicola did not instigate a significant increase in Cd leaching. The contribution of Cd leaching loss to the decline in soil total Cd concentration was negligible after phytoextraction in the pot experiment. Overall, the results contribute to our understanding of soil Cd leaching risk by phytoextraction with S. plumbizincicola.
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Affiliation(s)
- Tong Zhou
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Hao Huang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Tingting Mu
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing, China
| | - Yuyang Wang
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Jiawen Zhou
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Xinyang Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Longhua Wu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Peter Christie
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
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Liu M, He X, Zhuo R, Mu J, Zhang D. Functional characterization of a DNA-damage repair/tolerance 100 (DRT100) gene in Sedum alfredii Hance for genome stability maintenance and Cd hypertolerance. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 327:121546. [PMID: 37019266 DOI: 10.1016/j.envpol.2023.121546] [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: 10/17/2022] [Revised: 03/13/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
Cd contamination is a world-wild concern for its toxicity and accumulation in food chain. Sedum alfredii Hance (Crassulaceae) is a zinc (Zn) and cadmium (Cd) hyperaccumulator native to China and widely applied for the phytoremediation at Zn or Cd contaminated sites. Although many studies report the uptake, translocation and storage of Cd in S. alfredii Hance, limited information is known about the genes and underlying mechanisms of genome stability maintenance under Cd stress. In this study, a gene resembling DNA-damage repair/toleration 100 (DRT100) was Cd inducible and designated as SaDRT100. Heterologous expression of SaDRT100 gene in yeasts and Arabidopsis thaliana enhanced Cd tolerance capability. Under Cd stress, transgenic Arabidopsis with SaDRT100 gene exhibited lower levels of reactive oxygen species (ROS), fewer Cd uptake in roots and less Cd-induced DNA damage. Evidenced by the subcellular location in cellular nucleus and expression in aerial parts, we suggested the involvement of SaDRT100 in combating Cd-induced DNA damage. Our findings firstly uncovered the roles of SaDRT100 gene in Cd hypertolerance and genome stability maintenance in S. alfredii Hance. The potential functions of DNA protection make SaDRT100 gene a candidate in genetic engineering for phytoremediation at multi-component contaminated sites.
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Affiliation(s)
- Mingying Liu
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xuelian He
- Fungal Research Center, Shaanxi Institute of Microbiology, Xi'an, 710043, Shaanxi, China
| | - Renying Zhuo
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, 100091, China; The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, 311400, China
| | - Ju Mu
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Dayi Zhang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China.
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Yang J, Hu R, Zhao C, Wang L, Lei M, Guo G, Shi H, Liao X, Chen T. Challenges and opportunities for improving the environmental quality of cadmium-contaminated soil in China. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130560. [PMID: 37055969 DOI: 10.1016/j.jhazmat.2022.130560] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/29/2022] [Accepted: 12/04/2022] [Indexed: 06/19/2023]
Abstract
Considering the soil cadmium pollution problem, the Chinese government proposed to estimate the costs and practicality "to completely improve the soil quality by the middle of this century". This study analyzed the challenges in achieving this goal using biophysical data from 10 typical demonstration soil phytoextraction projects. The current annual phytoextraction efficiency was determined as 14.8-490 g ha-1 a-1 at 319 RMB g-1 cadmium. A total of 798 billion RMB and 5 years were required for remediation of cadmium contamination, which was 22 times the investment in soil remediation during 2016-2022. The break-even point of phytoextraction projects was 29 years. The heavy financial burden was considered the primary challenge in improving the environmental quality of such soil. The cost could be reduced by 5.5-35.3 % through optimization measures such as resourcefulness of hyperaccumulator harvests, large-scale breeding, and mechanized management. The break-even point could be shortened to 6-15 years by intercropping/rotating crops, contributing to the goal. Active exploration of phytoextraction efficiency-more efficient accumulators, optimized agronomic measures-is worth practicing.
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Affiliation(s)
- Jun Yang
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruqing Hu
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Zhao
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Lingqing Wang
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Mei Lei
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanghui Guo
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Huading Shi
- Technical Centre for Soil, Agricultural and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China.
| | - Xiaoyong Liao
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Tongbin Chen
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
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Santa-Cruz J, Robinson B, Krutyakov YA, Shapoval OA, Peñaloza P, Yáñez C, Neaman A. An Assessment of the Feasibility of Phytoextraction for the Stripping of Bioavailable Metals from Contaminated Soils. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:558-565. [PMID: 36582151 DOI: 10.1002/etc.5554] [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: 05/18/2022] [Revised: 07/19/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Phytoextraction has been proposed in many papers as a low-cost method for remediating contaminated soil. However, if national regulation is based on total metal(loid) concentrations in soil, phytoextraction is generally infeasible because of the long time required for remediation. Assessing phytoextraction requires determination of the dynamic rate of metal removal from soil. Phytoextraction may be feasible if the main goal is to reduce the soluble fraction of the metal(loid) with the goal of reducing bioavailability. However, it has been reported that there is a large mass balance mismatch between the reduction of the soluble metal fraction in contaminated soil and metal uptake by plants. Several studies report that the decrease of soluble fraction of metals in soil is higher than can be accounted for by plant uptake. In other words, studies generally overestimate the feasibility of bioavailable contaminant stripping. Therefore, a more rigorous approach is advisable to ensure that papers on bioavailable contaminant stripping include relevant information on mass balances. Furthermore, to implement the concept of bioavailable contaminant stripping, regulations must distinguish between the bioavailable fraction and the total metal concentration in soil. Environ Toxicol Chem 2023;42:558-565. © 2022 SETAC.
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Affiliation(s)
- Javier Santa-Cruz
- Escuela de Ciencias Agrícolas y Veterinarias, Universidad Viña del Mar, Viña del Mar, Chile
| | - Brett Robinson
- School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand
| | - Yurii A Krutyakov
- Department of Chemistry, Laboratory of Functional Materials for Agriculture, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Olga A Shapoval
- Pryanishnikov All-Russian Scientific Research Institute of Agrochemistry, Moscow, Russian Federation
| | - Patricia Peñaloza
- Escuela de Agronomía, Pontificia Universidad Católica de Valparaíso, Quillota, Chile
| | - Carolina Yáñez
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Alexander Neaman
- Departamento de Recursos Ambientales, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Arica, Chile
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The effects of pollution by multiple metals derived from long-term smelting activities on soil mite communities in arable soils under different land use types in East China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:47182-47208. [PMID: 36732457 DOI: 10.1007/s11356-023-25341-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 01/11/2023] [Indexed: 02/04/2023]
Abstract
Soil pollution represents a threat to soil biodiversity and to soil and human health. However, many ecotoxicological issues, such as the impact of heavy metal pollution on the soil mite community and its spatial distribution in areas with complex environmental factors, are not fully understood. Here, an investigation was conducted in an arable area (about 11 km2) enclosed by surrounding mountains. The study area was contaminated with potentially toxic metals derived from copper smelting that was functioning for over 10 years. The area comprised four land use types: woodlands, dry fields, paddy fields, and wastelands, and was divided into 141 study sites each with an area of 6.25 ha. The soil metal (Cu, Zn, Pb, and Cd) contents, pH, and organic matter were determined and their distributions were established. Furthermore, soil mite (Acari) community properties (species richness, individual abundance, and Shannon-Wiener diversity index) were determined, and the distributions of total species number and abundance were ascertained. Soil metal pollution strongly reduced soil mite community, but the effects depended on mite groups or species and their sensitivity to different metals as well as land use types. CANOCO analysis revealed that the order Oribatida was more highly correlated with soil metal contents, whereas the other three orders responded to soil metal contents depending on land use types, mite properties, or metals. SADIE method indicated that the coordinate relationship between mite species number and metal concentration was more negative (4-25% of the study sites) than positive (4-12%). The metal pollution levels in the soil were evaluated by single and integrated pollution and ecological risk indices.
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Ng CWW, So PS, Wong JTF, Lau SY. Intercropping of Pinellia ternata (herbal plant) with Sedum alfredii (Cd-hyperaccumulator) to reduce soil cadmium (Cd) absorption and improve yield. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 318:120930. [PMID: 36565916 DOI: 10.1016/j.envpol.2022.120930] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/01/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Soil contamination by cadmium (Cd) is of global concern, threatening not only crop production, but also supply of herbal medicine. Research studies usually grow crops with Sedum alfredii (a Cd-hyperaccumulator). However, intercropping herbal plants with S. alfredii and their interactions with hydro-chemical properties of soil are rarely considered. This study examines the growth of a herbal plant, Pinellia ternata, intercropped with S. alfredii in Cd-contaminated soil. Plant characteristics were assessed, especially biomass and Cd content of bulbil (yield and quality of P. ternata). Soil hydro-chemical properties including water retention, Cd content and organic matter were determined with statistical analyses. At low soil-Cd contamination (0.6 μg/g), bulbil biomass of intercropped P. ternata (PSL) was almost double compared with monoculture of P. ternata (PL), which is barely significant (p ≈ 0.05). The corm biomass of PSL was also significantly greater than that of PL (p < 0.05). Although soil-Cd contamination became more severe by increasing to 3 μg/g, the bulbil biomass in the intercrop was not significantly different from PL (p > 0.05). That said, it is evidenced that the yield of intercropped P. ternata was improved in Cd-contaminated soil. Such improvement was mainly attributed to reduced soil-Cd content and enhanced soil-water retention which was governed by plant roots and soil organic matters. The soil-water retention was first identified as a critical parameter in promoting plant growth under intercropping. More importantly, the bulbil-Cd content of P. ternata in PSL was significantly reduced (p < 0.05). This study demonstrates that the newly proposed intercrop is feasible to improve yield of herbal plants, and at the same time reduce heavy metal absorption and accumulation in medicinal organs, especially for P. ternata. This is anticipated to reduce the human health risk imposed by ingestion of Chinese herbal plants.
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Affiliation(s)
- Charles Wang Wai Ng
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong.
| | - Pui San So
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong.
| | - James Tsz Fung Wong
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong.
| | - Sze Yu Lau
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong.
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Li Z, Jiang L, Wang C, Liu P, Ma L, Zou C, Pan G, Shen Y. Combined genome-wide association study and gene co-expression network analysis identified ZmAKINβγ1 involved in lead tolerance and accumulation in maize seedlings. Int J Biol Macromol 2023; 226:1374-1386. [PMID: 36455818 DOI: 10.1016/j.ijbiomac.2022.11.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/15/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
Lead (Pb) contamination has become an important abiotic stress that negatively influences crop biomass and yield, threatening human health via food chains. The excavation of causal genes for Pb tolerance in maize will contribute to the breeding of Pb-tolerant maize germplasms. This study aimed to demonstrate the effects of AKINbetagamma-1 protein kinase (ZmAKINβγ1) on maize tolerance to Pb and reveal its molecular mechanisms underlying Pb tolerance. ZmAKINβγ1 was identified using genome-wide association study and weighted gene co-expression network analysis for shoot dry weight (SDW) and root dry weight (RDW) under Pb treatment. The OE and RNAi experiments showed that ZmAKINβγ1 negatively regulated maize tolerance to Pb by reducing SDW and RDW and increasing Pb accumulation in maize. Comparative transcriptome analysis between the OE/RNAi and wild-type lines revealed that ZmAKINβγ1 participated in the pectin metabolism process and nitrogen compound response. Gene-based association analyses revealed that three variants located in ZmAKINβγ1 promoter induced changes in its expression and Pb tolerance among maize lines. The dual-luciferase reporter system verified that the two genotypes (AAT and CGG) of ZmAKINβγ1 promoter had contrasting transcriptional activities. Collectively, ZmAKINβγ1-mediated Pb tolerance provided new insights into the cultivation of Pb-tolerant maize varieties and phytoremediation of Pb-polluted soils.
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Affiliation(s)
- Zhaoling Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China; College of Bioengineering, Sichuan University of Science & Engneering, Yibin 644000, China
| | - Li Jiang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Chen Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Peng Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Langlang Ma
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Chaoying Zou
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Guangtang Pan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Yaou Shen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China.
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Han TL, Tang TW, Zhang PH, Liu M, Zhao J, Peng JS, Meng S. Cloning and Functional Characterization of SpZIP2. Genes (Basel) 2022; 13:genes13122395. [PMID: 36553665 PMCID: PMC9778510 DOI: 10.3390/genes13122395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Zinc (Zn)-regulated and iron (Fe)-regulated transporter-like proteins (ZIP) are key players involved in the accumulation of cadmium (Cd) and Zn in plants. Sedum plumbizincicola X.H. Guo et S.B. Zhou ex L.H. Wu (S. plumbizincicola) is a Crassulaceae Cd/Zn hyperaccumulator found in China, but the role of ZIPs in S. plumbizincicola remains largely unexplored. Here, we identified 12 members of ZIP family genes by transcriptome analysis in S. plumbizincicola and cloned the SpZIP2 gene with functional analysis. The expression of SpZIP2 in roots was higher than that in the shoots, and Cd stress significantly decreased its expression in the roots but increased its expression in leaves. Protein sequence characteristics and structural analysis showed that the content of alanine and leucine residues in the SpZIP2 sequence was higher than other residues, and several serine, threonine and tyrosine sites can be phosphorylated. Transmembrane domain analysis showed that SpZIP2 has the classic eight transmembrane regions. The evolutionary analysis found that SpZIP2 is closely related to OsZIP2, followed by AtZIP11, OsZIP1 and AtZIP2. Sequence alignment showed that most of the conserved sequences among these members were located in the transmembrane regions. A further metal sensitivity assay using yeast mutant Δyap1 showed that the expression of SpZIP2 increased the sensitivity of the transformants to Cd but failed to change the resistance to Zn. The subsequent ion content determination showed that the expression of SpZIP2 increased the accumulation of Cd in yeast. Subcellular localization showed that SpZIP2 was localized to membrane systems, including the plasma membrane and endoplasmic reticulum. The above results indicate that ZIP member SpZIP2 participates in the uptake and accumulation of Cd into cells and might contribute to Cd hyperaccumulation in S. plumbizincicola.
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Affiliation(s)
- Tian-Long Han
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Ting-Wei Tang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Pei-Hong Zhang
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Min Liu
- Xiaoxiang College, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Jing Zhao
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Jia-Shi Peng
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China
- Correspondence: (J.-S.P.); (S.M.)
| | - Shuan Meng
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory of Rice Stress Biology, Changsha 410128, China
- Correspondence: (J.-S.P.); (S.M.)
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Cheng X, Cao X, Tan C, Liu L, Bai J, Liang Y, Cai R. Effects of four endophytic bacteria on cadmium speciation and remediation efficiency of Sedum plumbizincicola in farmland soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:89557-89569. [PMID: 35852747 DOI: 10.1007/s11356-022-21711-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) pollution in farmland soils severely affects agricultural production safety, thereby threatening human health. Sedum plumbizincicola is a Cd and Zn hyperaccumulator commonly used for the phytoremediation of Cd-contaminated soil. This study was aimed to improve the remediation effect of S. plumbizincicola on Cd-contaminated farmland soil and provide a theoretical basis for the enhancement of endophytic bacteria in the repair of Cd-contaminated soil with S. plumbizincicola. Four kinds of endophytic bacteria, namely Buttiauxella, Pedobacter, Aeromonas eucrenophila, and Ralstonia pickettii, were used, and soil culture experiments and pot experiments were conducted to explore the effects of endophytic bacteria on soil Cd speciation and phytoremediation efficiency of Cd-contaminated farmland soils. Under the experimental conditions, after inoculation with endophytic bacteria, the soil pH was effectively reduced, content of weak acid-extracted Cd and oxidizable Cd increased, and content of reducible Cd and residual Cd decreased. Soil Cd activity was increased, and the availability coefficient of soil Cd increased by 1.15 to 6.41 units compared with that of the control (CK2). Compared with CK2, the biomass of S. plumbizincicola significantly increased by 23.23-55.12%; Cd content in shoots and roots of S. plumbizincicola increased by 29.63-46.01% and 11.42-84.47%, respectively; and bioconcentration factor was 2.13 to 2.72 times that of CK2. The Cd removal rate of S. plumbizincicola monocropping was 48.25%. When S. plumbizincicola was planted with inoculating endophytic bacteria, the Cd removal rate in the soil reached 61.18-71.49%, which was significantly higher than that of CK2 (p < 0.05). The treatment with endophytic bacteria activated soil Cd, promoted the growth of S. plumbizincicola, increased its Cd content, and enhanced the phytoremediation of Cd-contaminated farmland soil. Therefore, endophytic bacteria can be used to improve the remediation efficiency of S. plumbizincicola in Cd-contaminated farmland soils.
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Affiliation(s)
- Xueyu Cheng
- School of Geographic Sciences, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Xueying Cao
- Rural Vitalization Research Institute, Changsha University, Changsha, 410022, People's Republic of China
| | - Changyin Tan
- School of Geographic Sciences, Hunan Normal University, Changsha, 410081, People's Republic of China.
| | - Lulu Liu
- School of Geographic Sciences, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Jia Bai
- School of Geographic Sciences, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Yufeng Liang
- School of Geographic Sciences, Hunan Normal University, Changsha, 410081, People's Republic of China
| | - Runzhong Cai
- School of Geographic Sciences, Hunan Normal University, Changsha, 410081, People's Republic of China
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Dou X, Dai H, Skuza L, Wei S. Cadmium removal potential of hyperaccumulator Solanum nigrum L. under two planting modes in three years continuous phytoremediation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119493. [PMID: 35597484 DOI: 10.1016/j.envpol.2022.119493] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/02/2022] [Accepted: 05/14/2022] [Indexed: 05/22/2023]
Abstract
Solanum nigrum L. is a Cd hyperaccumulator, but the potential for continuous remediation, or different planting methods have not been fully characterized. The potential for continuous phytoremediation of Cd-contaminated farmland soil (2.08 mg kg-1 Cd) by 2 planting methods (flowering harvest twice a year and maturity harvest once a year) was studied in a 3-year pot experiment. The total Cd accumulation (ug plant-1) of the 3-year flowering stage treatments was 26.3% higher than that of the maturity stage treatments, which was mainly due to that flowering harvest twice a year caused 65.5% increase of shoot biomass. Similarly, the Cd decreased concentration in soil and Cd removal rate in the flowering stage treatments were 29.2% and 27.9% higher than that in the maturity stage treatments, respectively. After 3 years of phytoremediation, the extractable Cd concentration in soil was reduced by 36.4% in the flowering stage treatments and by 27.6% in the maturity stage treatments, which also led to the same decreasing trend of Cd accumulation of S. nigrum. In conclusion, the study results have demonstrated that the planting mode of two harvests a year at the flowering stage seems to be a viable option to apply for continuous phytoremediation of Cd-contaminated farmland soil.
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Affiliation(s)
- Xuekai Dou
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Huiping Dai
- College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-resources, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C, State Key Laboratory of Biological Resources and Ecological Environment Jointly Built By Qinba Province and Ministry, Shaanxi University of Technology, Hanzhong, 723001, China.
| | - Lidia Skuza
- Institute of Biology, The Centre for Molecular Biology and Biotechnology, University of Szczecin, Szczecin, 71-415, Poland
| | - Shuhe Wei
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
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16
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Zhao X, Lei M, Gu R. Knowledge Mapping of the Phytoremediation of Cadmium-Contaminated Soil: A Bibliometric Analysis from 1994 to 2021. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19126987. [PMID: 35742236 PMCID: PMC9222242 DOI: 10.3390/ijerph19126987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 11/16/2022]
Abstract
Cadmium pollution of soil threatens the environmental quality and human health. Phytoremediation of cadmium-contaminated soil has attracted global attention in recent decades. This study aimed to conduct a comprehensive and systematic review of the literature on phytoremediation of cadmium-contaminated soil based on bibliometric analysis. A total of 5494 articles published between 1994 and 2021 were retrieved from the Web of Science Core Collection. Our knowledge mapping presented the authors, journals, countries, institutions, and other basic information to understand the development status of phytoremediation of cadmium-contaminated soil. Based on a keyword cluster analysis, the identified major research domains were "biochar", "Thlaspi caerulescens", "endophytic bacteria", "oxidative stress", "EDTA", and "bioconcentration factor". Overall, this study provided a detailed summary of research trends and hotspots. Based on the keyword co-occurrence and burst analysis, the core concepts and basic theories of this field were completed in 2011. However, the pace of theoretical development has been relatively slow. Finally, future research trends/frontiers were proposed, such as biochar addition, rhizosphere bacterial community manipulation, cadmium subcellular distribution, and health risk assessment.
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Affiliation(s)
- Xiaofeng Zhao
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mei Lei
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-010-64889115
| | - Runyao Gu
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China;
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Xu D, Yang C, Fan H, Qiu W, Huang B, Zhuo R, He Z, Li H, Han X. Genome-Wide Characterization, Evolutionary Analysis of ARF Gene Family, and the Role of SaARF4 in Cd Accumulation of Sedum alfredii Hance. PLANTS (BASEL, SWITZERLAND) 2022; 11:1273. [PMID: 35567274 PMCID: PMC9103128 DOI: 10.3390/plants11091273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/28/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Auxin response factors (ARFs) play important roles in plant development and environmental adaption. However, the function of ARFs in cadmium (Cd) accumulation are still unknown. Here, 23 SaARFs were detected in the genome of hyperaccumulating ecotype of Sedum alfredii Hance (HE), and they were not evenly distributed on the chromosomes. Their protein domains remained highly conservative. SaARFs in the phylogenetic tree can be divided into three groups. Genes in the group Ⅰ contained three introns at most. However, over ten introns were found in other two groups. Collinearity relationships were exhibited among ten SaARFs. The reasons for generating SaARFs may be segmental duplication and rearrangements. Collinearity analysis among different species revealed that more collinear genes of SaARFs can be found in the species with close relationships of HE. A total of eight elements in SaARFs promoters were related with abiotic stress. The qRT-PCR results indicated that four SaARFs can respond to Cd stress. Moreover, that there may be functional redundancy among six SaARFs. The adaptive selection and functional divergence analysis indicated that SaARF4 may undergo positive selection pressure and an adaptive-evolution process. Overexpressing SaARF4 effectively declined Cd accumulation. Eleven single nucleotide polymorphism (SNP) sites relevant to Cd accumulation can be detected in SaARF4. Among them, only one SNP site can alter the sequence of the SaARF4 protein, but the SaARF4 mutant of this site did not cause a significant difference in cadmium content, compared with wild-type plants. SaARFs may be involved in Cd-stress responses, and SaARF4 may be applied for decreasing Cd accumulation of plants.
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Affiliation(s)
- Dong Xu
- Key Laboratory of Three Gorges Regional Plant Genetic & Germplasm Enhancement (CTGU), Biotechnology Research Center, China Three Gorges University, Yichang 443000, China; (D.X.); (C.Y.)
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China; (H.F.); (W.Q.); (B.H.); (R.Z.)
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
| | - Chunyu Yang
- Key Laboratory of Three Gorges Regional Plant Genetic & Germplasm Enhancement (CTGU), Biotechnology Research Center, China Three Gorges University, Yichang 443000, China; (D.X.); (C.Y.)
| | - Huijin Fan
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China; (H.F.); (W.Q.); (B.H.); (R.Z.)
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
| | - Wenmin Qiu
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China; (H.F.); (W.Q.); (B.H.); (R.Z.)
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
| | - Biyun Huang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China; (H.F.); (W.Q.); (B.H.); (R.Z.)
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
| | - Renying Zhuo
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China; (H.F.); (W.Q.); (B.H.); (R.Z.)
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
| | - Zhengquan He
- Key Laboratory of Three Gorges Regional Plant Genetic & Germplasm Enhancement (CTGU), Biotechnology Research Center, China Three Gorges University, Yichang 443000, China; (D.X.); (C.Y.)
| | - Haiying Li
- Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xiaojiao Han
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China; (H.F.); (W.Q.); (B.H.); (R.Z.)
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
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Mei X, Wang Y, Li Z, Larousse M, Pere A, da Rocha M, Zhan F, He Y, Pu L, Panabières F, Zu Y. Root-associated microbiota drive phytoremediation strategies to lead of Sonchus Asper (L.) Hill as revealed by intercropping-induced modifications of the rhizosphere microbiome. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:23026-23040. [PMID: 34799796 PMCID: PMC8979924 DOI: 10.1007/s11356-021-17353-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 10/30/2021] [Indexed: 05/06/2023]
Abstract
Intercropping or assistant endophytes promote phytoremediation capacities of hyperaccumulators and enhance their tolerance to heavy metal (HM) stress. Findings from a previous study showed that intercropping the hyperaccumulator Sonchus asper (L.) Hill grown in HM-contaminated soils with maize improved the remediating properties and indicated an excluder-to-hyperaccumulator switched mode of action towards lead. In the current study, RNA-Seq analysis was conducted on Sonchus roots grown under intercropping or monoculture systems to explore the molecular events underlying this shift in lead sequestering strategy. The findings showed that intercropping only slightly affects S. asper transcriptome but significantly affects expression of root-associated microbial genomes. Further, intercropping triggers significant reshaping of endophytic communities associated with a 'root-to-shoot' transition of lead sequestration and improved phytoremediation capacities of S. asper. These findings indicate that accumulator activities of a weed are partially attributed to the root-associated microbiota, and a complex network of plant-microbe-plant interactions shapes the phytoremediation potential of S. asper. Analysis showed that intercropping may significantly change the structure of root-associated communities resulting in novel remediation properties, thus providing a basis for improving phytoremediation practices to restore contaminated soils.
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Affiliation(s)
- Xinyue Mei
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming, 650201, China
| | - Ying Wang
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China
| | - Zuran Li
- College of Landscape and Horticulture, Yunnan Agricultural University, Kunming, 650201, China
| | - Marie Larousse
- Université Côte d'Azur, INRAE, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Arthur Pere
- Université Côte d'Azur, INRAE, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Martine da Rocha
- Université Côte d'Azur, INRAE, CNRS, ISA, 06903, Sophia Antipolis, France
| | - Fangdong Zhan
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China
| | - Yongmei He
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China
| | - Linlong Pu
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China
| | - Franck Panabières
- Université Côte d'Azur, INRAE, CNRS, ISA, 06903, Sophia Antipolis, France.
| | - Yanqun Zu
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, China.
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Cornu JY, Waterlot C, Lebeau T. Advantages and limits to copper phytoextraction in vineyards. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:29226-29235. [PMID: 33754268 DOI: 10.1007/s11356-021-13450-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
Copper (Cu) contamination of soils may alter the functioning and sustainability of vineyard ecosystems. Cultivating Cu-extracting plants in vineyard inter-rows, or phytoextraction, is one possible way currently under consideration in agroecology to reduce Cu contamination of vineyard topsoils. This option is rarely used, mainly because Cu phytoextraction yields are too low to significantly reduce contamination due to the relatively "low" phytoavailability of Cu in the soil (compared to other trace metals) and its preferential accumulation in the roots of most extracting plants. This article describes the main practices and associated constraints that could theoretically be used to maximize Cu phytoextraction at field scale, including the use of Cu-accumulating plants grown (i) with acidifying plants (e.g., leguminous plants), and/or (ii) in the presence of acidifying fertilizers (ammonium, elemental sulfur), or (iii) with soluble "biochelators" added to the soil such as natural humic substances or metabolites produced by rhizospheric bacteria such as siderophores, in the inter-rows. This discussion article also provides an overview of the possible ways to exploit Cu-enriched biomass, notably through ecocatalysis or biofortification of animal feed.
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Affiliation(s)
- Jean-Yves Cornu
- ISPA, Bordeaux Sciences Agro, INRAE, F-33140, Villenave-d'Ornon cedex, France.
| | - Christophe Waterlot
- University of Lille, Institut Mines-Télécom, University of Artois, Junia, ULR 4515 - LGCgE, Laboratoire de Génie Civil et géo-Environnement, F-59000, Lille, France
| | - Thierry Lebeau
- LPG, UMR CNRS 6112, University of Nantes, 2 chemin de la Houssinière, 44322, Nantes, France
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Boorboori MR, Zhang HY. Arbuscular Mycorrhizal Fungi Are an Influential Factor in Improving the Phytoremediation of Arsenic, Cadmium, Lead, and Chromium. J Fungi (Basel) 2022; 8:176. [PMID: 35205936 PMCID: PMC8879560 DOI: 10.3390/jof8020176] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 11/27/2022] Open
Abstract
The increasing expansion of mines, factories, and agricultural lands has caused many changes and pollution in soils and water of several parts of the world. In recent years, metal(loid)s are one of the most dangerous environmental pollutants, which directly and indirectly enters the food cycle of humans and animals, resulting in irreparable damage to their health and even causing their death. One of the most important missions of ecologists and environmental scientists is to find suitable solutions to reduce metal(loid)s pollution and prevent their spread and penetration in soil and groundwater. In recent years, phytoremediation was considered a cheap and effective solution to reducing metal(loid)s pollution in soil and water. Additionally, the effect of soil microorganisms on increasing phytoremediation was given special attention; therefore, this study attempted to investigate the role of arbuscular mycorrhizal fungus in the phytoremediation system and in reducing contamination by some metal(loid)s in order to put a straightforward path in front of other researchers.
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Affiliation(s)
| | - Hai-Yang Zhang
- College of Environment and Surveying and Mapping Engineering, Suzhou University, Suzhou 234000, China;
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Zhang J, Cao X, Yao Z, Lin Q, Yan B, Cui X, He Z, Yang X, Wang CH, Chen G. Phytoremediation of Cd-contaminated farmland soil via various Sedum alfredii-oilseed rape cropping systems: Efficiency comparison and cost-benefit analysis. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126489. [PMID: 34216961 DOI: 10.1016/j.jhazmat.2021.126489] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/04/2021] [Accepted: 06/17/2021] [Indexed: 05/23/2023]
Abstract
Phytoremediation is a green technology for heavy metal removal from contaminated soil, and its remediation efficiency and economic feasibility in field trial should be evaluated before large-scale application. However, there is still lacking relevant analysis, especially for phytoremediation with different cropping patterns. In the present study, we performed phytoremediation on slightly Cd-contaminated farmland soil via three cropping systems, i.e. Sedum alfredii monoculture, oilseed rape monoculture, and S. alfredii-oilseed rape intercropping. Dry weights of S. alfredii and oilseed rape were both enhanced under intercropping pattern, while the highest total Cd extraction amount (148 g ha-1) were observed under S. alfredii monoculture. Furtherly, a cost-benefit analysis via Monta Carlo simulation in a ten-year lifetime was conducted. The benefits of S. alfredii monoculture and intercropping schemes would offset the total costs in 6 and 8 years, respectively. S. alfredii monoculture achieved a higher net present value of 1.88 × 104 US$ as compared with intercropping (9.53 × 103 US$). These results indicate that S. alfredii monoculture scheme could be a promising phytoremediation strategy for slightly Cd-contaminated soil owing to better remediation efficiency and economic feasibility. Moreover, the enhancement in mechanization level and the reduction of seedling cost could further improve its economic viability.
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Affiliation(s)
- Jianwei Zhang
- School of Environmental Science and Engineering/ Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
| | - Xuerui Cao
- Zhejiang Institute of Landscape Plants and Flowers, Hangzhou 311251, China
| | - Zhiyi Yao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585
| | - Qiang Lin
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Beibei Yan
- School of Environmental Science and Engineering/ Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
| | - Xiaoqiang Cui
- School of Environmental Science and Engineering/ Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China.
| | - Zhenli He
- Indian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, FL 34945, USA
| | - Xiaoe Yang
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Chi-Hwa Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585
| | - Guanyi Chen
- School of Environmental Science and Engineering/ Tianjin Key lab of Biomass Waste Utilization, Tianjin University, Tianjin 300072, China
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Cao X, Wang X, Lu M, Hamid Y, Lin Q, Liu X, Li T, Liu G, He Z, Yang X. The Cd phytoextraction potential of hyperaccumulator Sedum alfredii-oilseed rape intercropping system under different soil types and comprehensive benefits evaluation under field conditions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 285:117504. [PMID: 34380216 DOI: 10.1016/j.envpol.2021.117504] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 05/28/2021] [Accepted: 05/30/2021] [Indexed: 06/13/2023]
Abstract
Soil trace elements (TEs) contamination has become a worldwide problem in arable lands and poses great risk to human health via food chain. Intercropping of hyperaccumulator and cash crops is now proposed as a promising alternative phytoremediation technique to address the issue. However, the effect of intercropping in different soil types and field-scale benefits evaluation are rarely reported. A greenhouse pot experiment and a field trial were therefore designed to explore the effects of intercropping Sedum alfredii (hyperaccumulative population) and oilseed rape on Cd phytoextraction potential, Cd transport and crop production, as well as establishing a feasible assessment framework on the basis of benefits evaluation in contaminated soils. Compared with oilseed rape monoculture, intercropping with S. alfredii significantly and consistently increased biomass, seed yield and Cd accumulation in oilseed rape in five typical soil types. Accumulations of Cd varied with soil types, ranging from 22.8 to 4000 μg pot-1. Stepwise multiple linear regression analysis (SMLRA) showed Cd concentrations in plants were related to available phosphorus (AP), pH, soil organic matter (OM), available potassium (AK), silt and sand; R2 values varied from 0.834 to 0.994 (P < 0.05). A field trial also verified that intercropping could significantly enhance Cd phytoextraction. The highest index for comprehensive benefits evaluation was 0.61 observed in the S. alfredii and oilseed rape intercropping system. This system presented higher Cd phytoextraction potential and comprehensive benefits index whilst allowing ongoing agricultural activities in slightly and moderately Cd-contaminated soils. These results provide a possible technical approach for phytoremediation practice and give new insights into theoretical reference for development of Cd phytoextraction and benefits evaluation.
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Affiliation(s)
- Xuerui Cao
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China; Zhejiang Institute of Landscape Plants and Flowers, Hangzhou, 311251, People's Republic of China
| | - Xiaozi Wang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Min Lu
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Yasir Hamid
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Qiang Lin
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Xingxing Liu
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Tingqiang Li
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Guoqun Liu
- Technical Extension Station of Soil Fertilizer and Rural Energy, Kecheng, Quzhou, People's Republic of China
| | - Zhenli He
- University of Florida, Institute of Food and Agricultural Sciences, Indian River Research and Education Center, Fort Pierce, FL, 34945, United States
| | - Xiaoe Yang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education (MOE), College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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Song W, Wang J, Zhai L, Ge L, Hao S, Shi L, Lian C, Chen C, Shen Z, Chen Y. A meta-analysis about the accumulation of heavy metals uptake by Sedum alfredii and Sedum plumbizincicola in contaminated soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:744-752. [PMID: 34493098 DOI: 10.1080/15226514.2021.1970103] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Sedum alfredii and Sedum plumbizincicola typically have high heavy metal (such as Zn and Cd) accumulation capacities with fast growth rates and relatively high Pb tolerance in contaminated soils. We compared the accumulation characteristics of heavy metals in Sedum species through meta-analysis. Furthermore, we analyzed the effects of soil organic matter (SOM) and soil pH on Cd, Pb and Zn accumulation by S. alfredii and S. plumbizincicola and the correlation between various metals. Results showed that the accumulations of Cd and Zn in shoots were higher than that of roots, but Pb accumulated in roots more than shoots. Moreover, there is a significant positive correlation between the accumulation of Zn and Cd in shoots. We found that the heavy metal accumulation rate in shoots was higher with lower soil pH. Sedum species had the highest Cd adsorption capacity in 20-30 g/kg SOM and the highest Zn adsorption capacity in SOM less than 20 g/kg. The accumulation rate of Cd in shoots of S. plumbizincicola was increased with exposure time, while the accumulation rate of Zn was slightly decreased.
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Affiliation(s)
- Wuyu Song
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jie Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Lulu Zhai
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Liqiang Ge
- Technical Innovation Center of Ecological Monitoring and Restoration Project on Land (arable), Ministry of Natural Resources, Geological Survey of Jiangsu Province, Nanjing, China
| | - Shefeng Hao
- Technical Innovation Center of Ecological Monitoring and Restoration Project on Land (arable), Ministry of Natural Resources, Geological Survey of Jiangsu Province, Nanjing, China
| | - Liang Shi
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Chunlan Lian
- Asian Natural Environment Science Center, The University of Tokyo, Tokyo, Japan
| | - Chen Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, Jiangsu, China
- National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, Jiangsu, China
- National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation, Nanjing Agricultural University, Nanjing, Jiangsu, China
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24
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Zou J, Song F, Lu Y, Zhuge Y, Niu Y, Lou Y, Pan H, Zhang P, Pang L. Phytoremediation potential of wheat intercropped with different densities of Sedum plumbizincicola in soil contaminated with cadmium and zinc. CHEMOSPHERE 2021; 276:130223. [PMID: 34088099 DOI: 10.1016/j.chemosphere.2021.130223] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/18/2021] [Accepted: 03/06/2021] [Indexed: 05/22/2023]
Abstract
Intercropping technology is applied widely in crop cultivation to help remediate soil polluted with heavy metals. To investigate the feasibility and potential of intercropping hyperaccumulator plants with crops in cadmium (Cd)- and zinc (Zn)-contaminated soil, a pot experiment was conducted to examine plant growth and the contents of Cd and Zn in the soil following intercropping of wheat and Sedum plumbizincicola. Five treatments were examined: control (wheat monoculture: 36 seedlings per pot), and intercropping of wheat with different planting densities of S. plumbizincicola (3, 6, 9 and 15 seedlings per pot, respectively). Results showed a decrease in soil pH, and in soil and wheat contents of Cd and Zn with increasing planting density of S. plumbizincicola, while the removal rate of Cd and Zn increased. Meanwhile, excessive planting (15 seedlings per pot) inhibited wheat growth by 27.34% compared with the control, and overall, the optimal planting density was 9 seedlings per pot, resulting in effective remediation with only a moderate effect on wheat growth. These findings highlight the value of intercropping S. plumbizincicola with wheat as a means of improving remediation of soil contaminated with heavy metals (Cd and Zn).
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Affiliation(s)
- Jiacheng Zou
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Fupeng Song
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
| | - Yanyan Lu
- Department of Soil and Water Sciences, Range Cattle Research and Education Center, University of Florida, Ona, FL, 33865, USA.
| | - Yuping Zhuge
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Yingxin Niu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Yanhong Lou
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Hong Pan
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Penghui Zhang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Liuying Pang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong, 271018, China
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Rath S, Bal A, Paital B. Heavy metal and organic load in Haripur creek of Gopalpur along the Bay of Bengal, east coast of India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:28275-28288. [PMID: 33534104 DOI: 10.1007/s11356-021-12601-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 01/18/2021] [Indexed: 05/24/2023]
Abstract
Accumulation of heavy metals in zooplanktons is used as an essential tool for the evaluation of health of an ecosystem. Such data are used to set further monitoring strategies especially in (coastal) water bodies. In the present study, seasonal bioaccumulation of heavy metals such as Cu, Zn, Pb, Cd and Hg, organic loads such as nitrite and phosphate, contents loads and physicochemical parameters in Haripur creek along the Bay of Bengal in east coast of India is measured in zooplanktons. Coastal organisms are considered an integral part of marine ecosystems and their frequent massive die-off events along the coast of the Bay of Bengal are correlated with the obtained pollutant data. The levels of heavy metals were also correlated with several extrinsic environmental factors such as water transparency, dissolved oxygen, salinity, pH and temperature. Discriminant function analyses and standardised coefficients for canonical variables for the obtained data indicate that the studied environmental factors and organic loads varied as a function of season. Bioaccumulation of the studied heavy metals in zooplanktons was seasonal and infrequently noticed above the standard limit. The computed bioaccumulation factor of the five metals showed that accumulation of Zn was higher in zooplanktons as compared to that of the other studied metals. So, the entry of heavy metals through the food chains or via direct exposure (to organic loads also) to the other inhabiting organisms including fish may be assumed. This could be one of the possible reasons for the observed frequent (fish) die-off events at Gopalpur Coast along the Bay of Bengal and may be considered a clue for future investigations.
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Affiliation(s)
- Sasmita Rath
- Department of Marine Sciences, Berhampur University, Berhampur, Odisha, 760007, India
| | - Abhipsa Bal
- Redox Regulation Laboratory, Department of Zoology, College of Basic Science and Humanities, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India
| | - Biswaranjan Paital
- Redox Regulation Laboratory, Department of Zoology, College of Basic Science and Humanities, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India.
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Hu P, Du Y, Yang Y, Li Z, Luo Y, Wu L. Dispose waste liquor of fresh biomass of a hyperaccumulator Sedum plumbizincicola in phytoextraction process. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:1-11. [PMID: 34004122 DOI: 10.1080/15226514.2021.1917509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sedum plumbizincicola has been widely employed to remove cadmium (Cd) and zinc (Zn) from contaminated soils and harvested biomass is used to recover valuable metals. While chopping and compacting are efficient methods to rapidly reduce the volume and moisture of fresh biomass, the resulting waste liquor containing metals needs treatment. Two types of contaminated soils were cropped with S. plumbizincicola and top-dressed with this liquor to study metals migration in soil profile and their uptake by plants. There were three treatments: planting and adding liquor (PL), planting without liquor (P) and adding liquor without planting (L). The results showed that Cd and Zn from liquor were mainly retained at top soil 0-10 cm under L treatment. Compared with L treatment, soil Cd and Zn under PL treatment decreased significantly in soil profile due to the extraction of S. plumbizincicola. Moreover, the amount of Cd and Zn extracted by plants was greater than that applied in soils. The metal removal rate by S. plumbizincicola in acid clay loam soil was higher than that in neutral sandy soil. To sum up, metal retaining in soil and uptake by S. plumbizincicola can be used to treat waste liquor from its fresh biomass. Novelty StatementRapid and efficient treatment of harvested fresh biomass is still a challenge although phytoextraction using hyperaccumulator Sedum plumbizincicola has been widely employed. Chopping and compacting fresh biomass are efficient methods for rapid dehydration, however, a large amount of waste liquor that contains of Cd and Zn is produced and needs treatment. In the present study, a simple and low-cost method was tested to dispose the liquor, i. e. irrigating it onto the surface of contaminated soils where grown S. plumbizincicola. It was found that Cd and Zn applied in soils from liquor were mainly retained at top 0-10 cm soil depth where S. plumbizincicola root system was widespread, and the amount of Cd and Zn extracted by plants was greater than that applied in soils. Therefore, it is technically feasible to dispose the waste liquor dewatering from fresh biomass of S. plumbizincicola in its phytoextraction process. This study is helpful for the rapid, efficient and low-cost treatment of harvested fresh biomass in the large-scale application of phytoremediation.
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Affiliation(s)
- Pengjie Hu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Yanpei Du
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Yuying Yang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science and Technology, Nanjing, China
| | - Zhenxuan Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Nanjing University of Information Science and Technology, Nanjing, China
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Longhua Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
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Yan Y, Yang J, Guo Y, Yang J, Wan X, Zhao C, Guo J, Chen T. Potential evaluation of different intercropping remediation modes based on remediation efficiency and economic benefits - a case study of arsenic-contaminated soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:25-33. [PMID: 33998931 DOI: 10.1080/15226514.2021.1920571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hyperaccumulator-cash crop intercropping remediation is a research hotspot for heavy metal contaminated farmland, but few studies evaluated its feasibility based on practice. Field experiments and survey statistics were conducted to obtain parameters of Pteris vittata-Citrus reticulata/Zea mays intercropping, and potential of intercropping remediation was evaluated based on remediation efficiency and economic benefits. The results showed that intercropping hyperaccumulator with cash crop (especially herbs) had a certain negative effect on remediation efficiency because of the influence on planting density and harvest times of hyperaccumulator; while trees could partly alleviate this effect. Until achieving the predetermined target, the net remediation cost of P. vittata-Z. mays was 18.2 $/g As, followed by P. vittata monoculture (13.3 $/g) and P. vittata-C. reticulata (8.6 $/g). Based on the proposed evaluation model, nealy half of the P. vittata intercropping modes had low economic benefits, insufficient to compensate the cost of sacrificing remediation efficiency. Based on the data from two soil remediation projects, when net income of cash crops intercropped with As-hyperaccumulators exceeded 5865/1607 $/hm2 (herbs/trees), the economic benefit of intercropping will be relatively obvious. Therefore, cash crops should be considered from three aspects: planting conditions, spatial allocation and economic benefits. Novelty statement: This work analyzed remediation efficiency and economic benefits of intercropping remediation. An economic benefit evaluation model was established to evaluate intercropping remediation modes. The selection principle and net income threshold of cash crops in intercropping was put forward for the first time.[Figure: see text]HighlightsThe selection principle of cash crops in intercropping remediation was put forward.An evaluation model of P. vittata intercropping remediation was established.The net cost of extracting 1.0 g of soil As in each remediation mode was proposed.Net income of herb/tree intercropped with P. vittata should exceed 5865/1607 $/hm2.
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Affiliation(s)
- Yunxian Yan
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Jun Yang
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Yue Guo
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Junxing Yang
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaoming Wan
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Chen Zhao
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Junmei Guo
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Tongbin Chen
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
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Zhang X, Hu W, Xie X, Wu Y, Liang F, Tang M. Arbuscular mycorrhizal fungi promote lead immobilization by increasing the polysaccharide content within pectin and inducing cell wall peroxidase activity. CHEMOSPHERE 2021; 267:128924. [PMID: 33223210 DOI: 10.1016/j.chemosphere.2020.128924] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 10/15/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
The mechanism by which arbuscular mycorrhizal (AM) fungi immobilize lead (Pb) within the cell wall is unclear. Therefore, the aim of this study was to investigate the mechanism by which AM fungi immobilize Pb within the cell wall by measuring the Pb content in the cell wall, the polysaccharide and the uronic acid contents of different cell wall fractions, and the activity of cell wall peroxidase. Mycorrhizal-associated Medicago truncatula had higher shoot and root biomass than nonmycorrhizal-associated M. truncatula. AM inoculation increased the content of Pb in the cell wall under Pb stress. The polysaccharide content in the pectin and hemicellulose fractions were increased by AM inoculation with or without Pb stress. In AM-associated roots, the cell wall peroxidase activity increased in response to Pb stress. However, Pb stress did not affect the cell wall peroxidase activity in non-AM-associated roots. Correlation analysis suggested that MtPrx05 and MtPrx10 may participate in polysaccharide cross-linking and cell wall stiffening. The Pb stress resistance mechanism of AM-associated roots may involve cell wall stiffening. Taken together, the results show that AM inoculation may improve host plant growth and increase Pb immobilization in the cell wall by increasing the polysaccharide content within pectin and hemicellulose and by inducing cell wall peroxidase activity. Both the polysaccharide composition and cell wall peroxidase have important contributions to the resistance of mycorrhizal-associated plants.
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Affiliation(s)
- Xiangyu Zhang
- State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, PR China
| | - Wentao Hu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Lingnan Guangdong Laboratory of Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, PR China
| | - Xianan Xie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Lingnan Guangdong Laboratory of Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, PR China
| | - Yongbin Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Lingnan Guangdong Laboratory of Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, PR China
| | - Feiyan Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Lingnan Guangdong Laboratory of Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, PR China
| | - Ming Tang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Lingnan Guangdong Laboratory of Modern Agriculture, Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, PR China.
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Fan G, Zhou D, Zhang Z, Ai Y, Zhang W, Shi G, Tong F, Liu L, Chen W, Li J, Gao Y. Effect of two-dimensional electric field on the growth and cadmium uptake of Sedum plumbizincicola. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Qu H, Ma C, Xiao J, Li X, Wang S, Chen G. Co-planting of Quercus nuttallii, Quercus pagoda with Solanum nigrum enhanced their phytoremediation potential to multi-metal contaminated soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 23:1104-1112. [PMID: 33501836 DOI: 10.1080/15226514.2021.1878105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
To screen the efficient tree-herb co-planting patterns to remediate the heavy metal polluted soil, a greenhouse experiment was conducted for 150 days to examine the plant growth and metals accumulation across three co-planting patterns, including Solanum nigrum (S) co-planted with Quercus nuttallii (NS) or Quecrus pagoda (PS), and those three species are co-planted together (NPS). Results showed that the NPS pattern slightly decreased the tree biomass, while NS and PS treatments improved the plant growth (1.51-10.68%). It is worth noting that the NS treatment significantly (p < 0.05) increased photosynthetic pigment content (82.61-113.93%), net CO2 assimilation (21.44%), and the uptake of Cd (44.58%) in Q. nuttallii; the PS treatment significantly (p < 0.05) increased the net CO2 assimilation (8.61%) and the uptake of Cd (42.23%), Zn (31.18%) in Q. pagoda; and the uptake of Cd and Zn in the NPS co-planting treatment were only slightly increased. For S. nigrum, the photosynthetic pigment content was elevated and the metal accumulation in itself also maintained the relative stable in all the co-planting treatments. Thus, co-planting of Quercus with S. nigrum was a promising way to remediate heavily polluted soil by heavy metals. Novelty statement: Co-planting with multiple plant species, as a novel strategy, has great value for the remediation of heavy metal contaminated soil. The paper aimed to explore the suitable co-planting pattern of Quercus, arbor trees which showed phytoremediation potential, co-planted with Cd hyperaccumulator, Solanum nigrum. The result suggested the co-planting with S. nigrum enhanced the plant growth, photosynthesis, and metals extraction of Q. nuttallii and Q. pagoda. Co-planting also improved ecological adaptation of S. nigrum via elevating pigment content. Thus, co-planting of Quercus with S. nigrum was a promising way to remediate polluted soil.
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Affiliation(s)
- Haojie Qu
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
| | - Chuanxin Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China
- The Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Jiang Xiao
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
| | - Xiaogang Li
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
| | - Shufeng Wang
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
| | - Guangcai Chen
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
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She S, Hu B, Zhang X, Shao S, Jiang Y, Zhou L, Shi Z. Current Status and Temporal Trend of Potentially Toxic Elements Pollution in Agricultural Soil in the Yangtze River Delta Region: A Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:1033. [PMID: 33503895 PMCID: PMC7908581 DOI: 10.3390/ijerph18031033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 11/22/2022]
Abstract
Potentially toxic elements (PTEs) pollution in the agricultural soil of China, especially in developed regions such as the Yangtze River Delta (YRD) in eastern China, has received increasing attention. However, there are few studies on the long-term assessment of soil pollution by PTEs over large regions. Therefore, in this study, a meta-analysis was conducted to evaluate the current state and temporal trend of PTEs pollution in the agricultural land of the Yangtze River Delta. Based on a review of 118 studies published between 1993 and 2020, the average concentrations of Cd, Hg, As, Pb, Cr, Cu, Zn, and Ni were found to be 0.25 mg kg-1, 0.14 mg kg-1, 8.14 mg kg-1, 32.32 mg kg-1, 68.84 mg kg-1, 32.58 mg kg-1, 92.35 mg kg-1, and 29.30 mg kg-1, respectively. Among these elements, only Cd and Hg showed significant accumulation compared with their background values. The eastern Yangtze River Delta showed a relatively high ecological risk due to intensive industrial activities. The contents of Cd, Pb, and Zn in soil showed an increasing trend from 1993 to 2000 and then showed a decreasing trend. The results obtained from this study will provide guidance for the prevention and control of soil pollution in the Yangtze River Delta.
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Affiliation(s)
- Shufeng She
- Institute of Applied Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058, China; (S.S.); (B.H.); (X.Z.); (S.S.); (Y.J.); (L.Z.)
| | - Bifeng Hu
- Institute of Applied Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058, China; (S.S.); (B.H.); (X.Z.); (S.S.); (Y.J.); (L.Z.)
- Department of Land Resource Management, School of Tourism and Urban Management, Jiangxi University of Finance and Economics, Nanchang 330013, China
- Institute of Soil Science, French National Institute of Agriculture, INRAE, 45075 Orleans, France
| | - Xianglin Zhang
- Institute of Applied Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058, China; (S.S.); (B.H.); (X.Z.); (S.S.); (Y.J.); (L.Z.)
| | - Shuai Shao
- Institute of Applied Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058, China; (S.S.); (B.H.); (X.Z.); (S.S.); (Y.J.); (L.Z.)
| | - Yefeng Jiang
- Institute of Applied Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058, China; (S.S.); (B.H.); (X.Z.); (S.S.); (Y.J.); (L.Z.)
| | - Lianqing Zhou
- Institute of Applied Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058, China; (S.S.); (B.H.); (X.Z.); (S.S.); (Y.J.); (L.Z.)
| | - Zhou Shi
- Institute of Applied Remote Sensing and Information Technology, Zhejiang University, Hangzhou 310058, China; (S.S.); (B.H.); (X.Z.); (S.S.); (Y.J.); (L.Z.)
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Zhou JW, Li Z, Liu MS, Yu HM, Wu LH, Huang F, Luo YM, Christie P. Cadmium Isotopic Fractionation in the Soil-Plant System during Repeated Phytoextraction with a Cadmium Hyperaccumulating Plant Species. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:13598-13609. [PMID: 33079537 DOI: 10.1021/acs.est.0c03142] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Analysis of stable metal isotopes can provide important information on biogeochemical processes in the soil-plant system. Here, we conducted a repeated phytoextraction experiment using the cadmium (Cd) hyperaccumulator Sedum plumbizincicola X. H. Guo et S. B. Zhou ex L. H. Wu (Crassulaceae) in four different Cd-contaminated agricultural soils over five consecutive crops. Isotope composition of Cd was determined in the four soils before and after the fifth crop, in the plant shoots harvested in all soils in the first crop, and in the NH4OAc extracts of two contrasting soils with large differences in soil pH (5.73 and 7.32) and clay content (20.4 and 31.3%) before and after repeated phytoextraction. Before phytoextraction NH4OAc-extractable Cd showed a slight but significant negative isotope fractionation or no fractionation compared with total Cd (Δ114/110Cdextract-soil = -0.15 ± 0.05 (mean ± standard error) and 0.01 ± 0.01‰), and the extent of fractionation varied with soil pH and clay content. S. plumbizincicola preferentially took up heavy Cd from soils (Δ114/110Cdshoot-soil = 0.02-0.14‰), and heavy isotopes were significantly depleted in two soils after repeated phytoextraction (Δ114/110Cdsoil:P5-soil:P0 = -0.15 ± 0.02 and -0.12 ± 0.01‰). This provides evidence for the existence of specific Cd transporters in S. plumbizincicola, leading to positive isotope fractionation during uptake. After phytoextraction by five sequential crops, the NH4OAc-extractable Cd pool was significantly enriched in heavy isotopes (Δ114/110Cdextract:P5-extract:P0 = 0.07 ± 0.02 and 0.18 ± 0.05‰) despite the preferential uptake of heavy isotopes, indicating the occurrence of root-induced Cd mobilization in soils, which is supposed to favor heavy Cd in the organo-complexes with root exudates. Our results demonstrate that Cd is taken up by S. plumbizincicola via specific transporters, partly after active mobilization from the more strongly bound soil pool such as iron/manganese (hydr)oxide-bound Cd during repeated phytoextraction. This renders S. plumbizincicola a suitable plant for large-scale field phytoremediation.
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Affiliation(s)
- Jia-Wen Zhou
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhu Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Meng-Shu Liu
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Hui-Min Yu
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Long-Hua Wu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Fang Huang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Yong-Ming Luo
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Peter Christie
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Yu G, Jiang P, Fu X, Liu J, Sunahara GI, Chen Z, Xiao H, Lin F, Wang X. Phytoextraction of cadmium-contaminated soil by Celosia argentea Linn.: A long-term field study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115408. [PMID: 32829173 DOI: 10.1016/j.envpol.2020.115408] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/12/2020] [Accepted: 08/08/2020] [Indexed: 05/27/2023]
Abstract
Phytoextraction using Celosia argentea Linn. can potentially decontaminate Cd-contaminated soils. However, most earlier studies have been conducted at laboratory scale and for a relatively short remediation period. To evaluate the phytoextraction efficiency of C. argentea combined with different soil amendments (ammonium chloride, Bacillus megaterium, and citric acid), an 18-month field experiment was carried out in a farmland soil contaminated with 3.68 mg kg-1 Cd by mine tailings in southern China. Soil Cd concentrations were decreased by 6.34 ± 0.73% after the three harvestings (with no amendments), which was 2.27 times that of the no-planting control (p < 0.05). Application of ammonium chloride, B. megaterium, and citric acid increased the overall Cd reduction rate in soil by 40.5%, 46.1%, and 105%, respectively. The application of citric acid decreased total Cd in soil by up to 16.9% in the rhizosphere soil and 13.0% in the bulk soil. The highest annual shoot biomass yield and Cd extraction amount reached 8.79 t ha-1 and 273 g ha-1. Acid-soluble Cd fraction in the rhizosphere was significantly lower compared to that in the bulk soil (p < 0.05), which indicates that mobile Cd in the rhizosphere was taken up by the roots vastly. C. argentea phytoextraction also improved soil metabolic functions by increasing the activities of soil enzymes (urease, invertase, phosphatase, and catalase). These findings demonstrate that Cd phytoextraction using C. argentea with the application of soil amendments can greatly improve the quality of Cd-contaminated soils.
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Affiliation(s)
- Guo Yu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin University of Technology, Guilin, China
| | - Pingping Jiang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin University of Technology, Guilin, China
| | - Xiaofeng Fu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
| | - Jie Liu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China; Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, MNR, China.
| | - Geoffrey I Sunahara
- Department of Natural Resource Sciences, McGill University, Montreal, Quebec, Canada
| | - Zhe Chen
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China; Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, MNR, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin University of Technology, Guilin, China
| | - He Xiao
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
| | - Fanyu Lin
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China
| | - Xinshuai Wang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
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Zhou J, Li Z, Zhou T, Xin Z, Wu L, Luo Y, Christie P. Aluminum toxicity decreases the phytoextraction capability by cadmium/zinc hyperaccumulator Sedum plumbizincicola in acid soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 711:134591. [PMID: 31822411 DOI: 10.1016/j.scitotenv.2019.134591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/19/2019] [Accepted: 09/20/2019] [Indexed: 06/10/2023]
Abstract
Excessive aluminum (Al) in acid soils or Al released due to acidification during repeated phytoextraction might impair the phytoextraction efficiency of hyperaccumulators but this is often neglected. Here, we investigate for the first time the toxicity of Al to the cadmium (Cd) and zinc (Zn) hyperaccumulator Sedum plumbizincicola with hydroponics experiments both in the long (7 weeks) and short terms (72 h), and in soil conditions in a pot experiment. In the long-term hydroponics experiment, observable toxic effects of Al were found even at <100 μM Al at pH 5.00 (soluble Al: 8.74 μM) which lowered shoot Cd uptake by 39.3% compared with the Al-free treatment. The scanning ion-selective electrode technique shows that root Cd2+ influx was significantly inhibited after treatment with 200 μM Al at pH 4.00 after 48 h. The pot experiment confirms that Al toxicity induced inhibition of plant growth and metal uptake in the acid soil with an exchangeable Al of 0.33 cmolc kg-1. Decreasing Cd adsorption at root surfaces induced by Al stress may be an important factor in declining shoot Cd uptake. Analysis of the chemical forms of metals shows that Al addition significantly influenced the chemical forms of Cd and Zn in stems, made them less mobile and thus restrained Cd and Zn translocation. Aluminum toxicity that potentially occurs in acid soils and in soils during repeated phytoextraction would be a primary factor limiting metal removal efficiency from contaminated soils using hyperaccumulators.
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Affiliation(s)
- Jiawen Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Zhu Li
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Tong Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zaijun Xin
- Institute of Watershed Ecology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Longhua Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Peter Christie
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Lu Q, Chen S, Li Y, Zheng F, He B, Gu M. Exogenous abscisic acid (ABA) promotes cadmium (Cd) accumulation in Sedum alfredii Hance by regulating the expression of Cd stress response genes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:8719-8731. [PMID: 31912395 DOI: 10.1007/s11356-019-07512-w] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 12/23/2019] [Indexed: 05/18/2023]
Abstract
Sedum alfredii Hance is a zinc (Zn) and cadmium (Cd) hyperaccumulator plant. However, the regulatory role of plant hormones in the Zn or Cd uptake and accumulation of S. alfredii remains unclear. In this work, the growth, Cd accumulation, abscisic acid (ABA) synthesis and catabolism, malonaldehyde (MDA) content, and transcriptional level of some Cd stress response genes under ABA and Cd co-treatment were investigated to reveal the impact of ABA on Cd resistance and Cd accumulation of S. alfredii. The results show that 0.2 mg/L ABA and 100 μmol/L Cd co-treatment enhanced Cd accumulation and growth in S. alfredii, whereas lower or higher ABA concentrations weaken or even reverse this effect, which was positively correlated with endogenous ABA content. The increase in endogenous ABA content might be the results of the increasing ABA synthetase activities and decreasing ABA lytic enzyme, which was induced by the application of 0.2 mg/L ABA under 100 μmol/L Cd treatment. Principal component analysis (PCA) indicated that ABA impacted the expression pattern of Cd stress response genes, which coincided with the Cd accumulation pattern in the shoots of S. alfredii. Cross-over analysis of partial least squares-discriminant analysis (PLS-DA) and correlation analysis indicated that HsfA4c, HMA4 expression in roots, and HMA2, HMA3, CAD, NAS expression in shoots were correlated with endogenous ABA, which suggests that endogenous ABA improves Cd resistance of seedlings, switches the root-to-shoot transporter from HMA2 to HMA4, and transports more Cd into apoplasts to promote Cd accumulation in the shoots of S. alfredii. Taken together, ABA plays an essential role not only in Cd resistance but also in Cd transport from root to shoot in S. alfredii under Cd stress.
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Affiliation(s)
- Qinyu Lu
- Guangxi Key Laboratory of Agri-environment and Agri-products Safety, Guangxi University, Nanning, 530004, China
- Agricultural College, Guangxi University, Nanning, 530004, China
| | - Shimiao Chen
- Guangxi Key Laboratory of Agri-environment and Agri-products Safety, Guangxi University, Nanning, 530004, China
- Agricultural College, Guangxi University, Nanning, 530004, China
| | - Yanyan Li
- Qinzhou Institute of Agricultural Sciences, Qinzhou, 535000, China
| | - Fuhai Zheng
- Guangzhou Institute of Forestry and Landscape Architecture, Guangzhou, 510405, China
| | - Bing He
- Guangxi Key Laboratory of Agri-environment and Agri-products Safety, Guangxi University, Nanning, 530004, China.
- Agricultural College, Guangxi University, Nanning, 530004, China.
| | - Minghua Gu
- Guangxi Key Laboratory of Agri-environment and Agri-products Safety, Guangxi University, Nanning, 530004, China.
- Agricultural College, Guangxi University, Nanning, 530004, China.
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Khan MI, Cheema SA, Anum S, Niazi NK, Azam M, Bashir S, Ashraf I, Qadri R. Phytoremediation of Agricultural Pollutants. CONCEPTS AND STRATEGIES IN PLANT SCIENCES 2020. [DOI: 10.1007/978-3-030-00099-8_2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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He X, Zhang J, Ren Y, Sun C, Deng X, Qian M, Hu Z, Li R, Chen Y, Shen Z, Xia Y. Polyaspartate and liquid amino acid fertilizer are appropriate alternatives for promoting the phytoextraction of cadmium and lead in Solanum nigrum L. CHEMOSPHERE 2019; 237:124483. [PMID: 31404738 DOI: 10.1016/j.chemosphere.2019.124483] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/26/2019] [Accepted: 07/28/2019] [Indexed: 05/11/2023]
Abstract
Traditional metal chelators, such as ethylenediaminetetraacetic acid (EDTA), have been gradually replaced due to their poor biodegradability in soil and high risk of heavy metal leaching into groundwater, which pose high environmental risks to the health of humans and animals. In this study, a liquid amino acid fertilizer (LAAF, waste proteins from hydrolysates of animal carcasses) and polyaspartate (PASP) were used as additives to enhance the phytoextraction of cadmium (Cd) and lead (Pb) from contaminated soil. We conducted pot experiments to investigate the phytoextraction capacity of Solanum nigrum, a Cd accumulator, grown on soil highly contaminated with Cd and Pb in the absence (as controls) or presence of PASP and LAAF. Both PASP and LAAF significantly improved plant growth, Cd accumulation, and total Cd and Pb content in S. nigrum shoots and roots. PASP and LAAF application promoted Cd translocation from roots to shoots in S. nigrum and Cd bio-accessibility in rhizosphere soils, but this was not the case for Pb. Both PASP and LAAF increased Cd and Pb phytoextraction by S. nigrum plants, and Cd phytoextraction was more effective in LAAF-assisted S. nigrum than in PASP-assisted S. nigrum. These findings demonstrate that the low cost and ecofriendly features of recycled waste proteins make them good candidates for chelant-enhanced phytoextraction from heavy metal-contaminated soils.
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Affiliation(s)
- Xiaoman He
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jia Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yingnan Ren
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chuanyu Sun
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaopeng Deng
- Yunnan Academy of Tobacco Agricultural Sciences, Kunming, 650021, China
| | - Meng Qian
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhubing Hu
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng, 475001, China
| | - Rong Li
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210095, China
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210095, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210095, China
| | - Yan Xia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing, 210095, China.
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Liu M, He X, Feng T, Zhuo R, Qiu W, Han X, Qiao G, Zhang D. cDNA Library for Mining Functional Genes in Sedum alfredii Hance Related to Cadmium Tolerance and Characterization of the Roles of a Novel SaCTP2 Gene in Enhancing Cadmium Hyperaccumulation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:10926-10940. [PMID: 31449747 DOI: 10.1021/acs.est.9b03237] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Heavy metal contamination presents serious threats to living organisms. Functional genes related to cadmium (Cd) hypertolerance or hyperaccumulation must be explored to enhance phytoremediation. Sedum alfredii Hance is a Zn/Cd cohyperaccumulator exhibiting abundant genes associated with Cd hypertolerance. Here, we developed a method for screening genes related to Cd tolerance by expressing a cDNA-library for S. alfredii Hance. Yeast functional complementation validated 42 of 48 full-length genes involved in Cd tolerance, and the majority of them were strongly induced in roots and exhibited diverse expression profiles across tissues. Coexpression network analysis suggested that 15 hub genes were connected with genes involved in metabolic processes, response to stimuli, and metal transporter and antioxidant activity. The functions of a novel SaCTP2 gene were validated by heterologous expression in Arabidopsis, responsible for retarding chlorophyll content decrease, maintaining membrane integrity, promoting reactive oxygen species (ROS) scavenger activities, and reducing ROS levels. Our findings suggest a highly complex network of genes related to Cd hypertolerance in S. alfredii Hance, accomplished via the antioxidant system, defense genes induction, and the calcium signaling pathway. The proposed cDNA-library method is an effective approach for mining candidate genes associated with Cd hypertolerance to develop genetically engineered plants for use in phytoremediation.
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Affiliation(s)
- Mingying Liu
- State Key Laboratory of Tree Genetics and Breeding , Xiangshan Road , Beijing 100091 , People's Republic of China
- Key Laboratory of Tree Breeding of Zhejiang Province , Research Institute of Subtropical of Forestry, Chinese Academy of Forestry , Hangzhou 311400 , People's Republic of China
- School of Basic Medical Sciences , Zhejiang Chinese Medical University , Hangzhou 310053 , People's Republic of China
| | - Xuelian He
- State Key Laboratory of Tree Genetics and Breeding , Xiangshan Road , Beijing 100091 , People's Republic of China
- Key Laboratory of Tree Breeding of Zhejiang Province , Research Institute of Subtropical of Forestry, Chinese Academy of Forestry , Hangzhou 311400 , People's Republic of China
| | - Tongyu Feng
- State Key Laboratory of Tree Genetics and Breeding , Xiangshan Road , Beijing 100091 , People's Republic of China
- Key Laboratory of Tree Breeding of Zhejiang Province , Research Institute of Subtropical of Forestry, Chinese Academy of Forestry , Hangzhou 311400 , People's Republic of China
| | - Renying Zhuo
- State Key Laboratory of Tree Genetics and Breeding , Xiangshan Road , Beijing 100091 , People's Republic of China
- Key Laboratory of Tree Breeding of Zhejiang Province , Research Institute of Subtropical of Forestry, Chinese Academy of Forestry , Hangzhou 311400 , People's Republic of China
| | - Wenmin Qiu
- State Key Laboratory of Tree Genetics and Breeding , Xiangshan Road , Beijing 100091 , People's Republic of China
- Key Laboratory of Tree Breeding of Zhejiang Province , Research Institute of Subtropical of Forestry, Chinese Academy of Forestry , Hangzhou 311400 , People's Republic of China
| | - Xiaojiao Han
- State Key Laboratory of Tree Genetics and Breeding , Xiangshan Road , Beijing 100091 , People's Republic of China
- Key Laboratory of Tree Breeding of Zhejiang Province , Research Institute of Subtropical of Forestry, Chinese Academy of Forestry , Hangzhou 311400 , People's Republic of China
| | - Guirong Qiao
- State Key Laboratory of Tree Genetics and Breeding , Xiangshan Road , Beijing 100091 , People's Republic of China
- Key Laboratory of Tree Breeding of Zhejiang Province , Research Institute of Subtropical of Forestry, Chinese Academy of Forestry , Hangzhou 311400 , People's Republic of China
| | - Dayi Zhang
- School of Environment , Tsinghua University , Beijing 100084 , People's Republic of China
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Yu G, Liu J, Long Y, Chen Z, Sunahara GI, Jiang P, You S, Lin H, Xiao H. Phytoextraction of cadmium-contaminated soils: comparison of plant species and low molecular weight organic acids. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 22:383-391. [PMID: 31522543 DOI: 10.1080/15226514.2019.1663488] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To select suitable plants for phytoextraction of Cd-contaminated soils, we evaluated the phytoextraction potential of five local Cd-accumulators: Amaranthus hypochondriacus L., Solanum nigrum L., Phytolacca acinosa Roxb., Celosia argentea L., and Sedum spectabile Boreau. The plants were grown in three naturally contaminated soils with different total Cd levels (1.57, 3.89, and 22.4 mg kg-1). Throughout the experimental period, no plants showed any visible symptoms of metal toxicity. The Cd uptake of C. argentea was the greatest in the S-YS soil (105 μg plant-1) and among the greatest in the S-HC soil and S-TJ soil. Besides, C. argentea exhibited the highest bioconcentration factor (12.3) in three soils. To improve the phytoextraction efficiency of C. argentea, we applied four low molecular weight organic acids (LMWOAs): tartaric acid, malic acid, oxalic acid, and citric acid. Malic acid was more effective in enhancing Cd uptake by C. argentea than the other LMWOAs. Therefore, C. argentea may be a potential choice in actual remediation projects. Moreover, application of malic acid is an effective way to increase the phytoextraction efficiency of C. argentea.
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Affiliation(s)
- Guo Yu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin University of Technology, Guilin, China
| | - Jie Liu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Yumei Long
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
| | - Zhe Chen
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Geoffrey I Sunahara
- Department of Natural Resource Sciences, McGill University, Montreal, Quebec, Canada
| | - Pingping Jiang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Shaohong You
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin University of Technology, Guilin, China
| | - Hua Lin
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin University of Technology, Guilin, China
| | - He Xiao
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin, China
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
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Deng Q, Deng Q, Wang Y, Li L, Long X, Ren S, Fan Y, Lin L, Xia H, Liang D, Wang J, Zhang H, Lv X, Wang Y. Effects of intercropping with Bidens species plants on the growth and cadmium accumulation of Ziziphus acidojujuba seedlings. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:342. [PMID: 31053931 DOI: 10.1007/s10661-019-7375-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
To study the effects of intercropping with accumulator plants on heavy metal accumulation of fruit trees, plants of three Bidens species (Bidens pilosa, Bidens biternata, and Bidens parviflora) were intercropped with Ziziphus acidojujuba seedlings under cadmium (Cd)-contaminated conditions (5 mg kg-1). Intercropping with Bidens species increased the biomass and chlorophyll b content of Z. acidojujuba seedlings compared with monoculture, but decreased their carotenoid content. Intercropping with Bidens species also improved the activity of superoxide dismutase, peroxidase, and catalase in Z. acidojujuba seedlings compared with monoculture. Intercropping with Bidens species decreased the Cd content in the roots of Z. acidojujuba seedlings compared with monoculture. Conversely, when intercropped with B. pilosa, B. biternata, and B. parviflora, the Cd content in the shoots of Z. acidojujuba seedlings increased by 62.18%, 60.10%, and 62.18%, respectively, compared with that of those monocultured. When intercropped with Z. acidojujuba seedlings, the Cd accumulation amount of three Bidens species plants were ranked B. parviflora > B. biternata > B. pilosa. Therefore, intercropping with plants of three Bidens species is not suitable for Cd-contaminated jujube orchards.
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Affiliation(s)
- Qian Deng
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Qunxian Deng
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
| | - Yang Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Lei Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xingyu Long
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Si Ren
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yue Fan
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Lijin Lin
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Hui Xia
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Dong Liang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Jin Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Huifen Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xiulan Lv
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yongqing Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
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Li X, Yu H, Sun X, Yang J, Wang D, Shen L, Pan Y, Wu Y, Wang Q, Zhao Y. Effects of sulfur application on cadmium bioaccumulation in tobacco and its possible mechanisms of rhizospheric microorganisms. JOURNAL OF HAZARDOUS MATERIALS 2019; 368:308-315. [PMID: 30685719 DOI: 10.1016/j.jhazmat.2018.12.099] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/15/2018] [Accepted: 12/26/2018] [Indexed: 06/09/2023]
Abstract
A potting experiment was conducted to investigate the effect of sulfur application on the bioaccumulation by tobacco and its mechanisms of rhizospheric microorganisms. Cadmium content in tobacco was analyzed using atomic absorption spectrometer, while bacterial community and related gene in soil were analyzed via high-throughput sequencing and quantitative PCR techniques, respectively. The obtained results indicated that tobacco had the ability to accumulate cadmium under no sulfur application conditions, with cadmium contents of 35.4, 23.6, and 26.3 mg kg-1 in leaves, stems, and roots, respectively. Under high-sulfur treatment, these values increased to 66.4, 46.1, and 42.6 mg kg-1, respectively, probably due to the increase of the available cadmium content (from 1.1 to 3.3 mg kg-1) in the soil through a decrease of the soil pH value, which was contributed by the sulfur oxidation reaction. dsrA and soxB genes might play an important role in sulfur oxidation, and Thiobacillus sp. was the dominant bacterial genus during the sulfur oxidation process. In addition, sulfur application exerted little effect on the diversity and structure of the soil bacterial community. The combined results indicate that sulfur application is an effective and safe method for Cd phytoextraction by tobacco.
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Affiliation(s)
- Xuanzhen Li
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Hao Yu
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xiaowei Sun
- Henan Academy of Forestry, Zhengzhou, 450008, China
| | - Jiantao Yang
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Daichang Wang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450002, China
| | - Lianfeng Shen
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yanshuo Pan
- College of Life Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yucheng Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Qiang Wang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yong Zhao
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China.
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Zeng P, Guo Z, Xiao X, Peng C, Huang B, Feng W. Complementarity of co-planting a hyperaccumulator with three metal(loid)-tolerant species for metal(loid)-contaminated soil remediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 169:306-315. [PMID: 30458397 DOI: 10.1016/j.ecoenv.2018.11.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/02/2018] [Accepted: 11/05/2018] [Indexed: 06/09/2023]
Abstract
Co-planting with multiple plant species has great value for the remediation of soil co-contaminated with metal(loid)s. A pot experiment has been conducted to study the growth, phytoextraction of metal(loid) and complementarity by co-planting Pteris vittata L. with three metal(loid)-tolerant species with large biomass (namely Arundo donax L., Morus alba L., and Broussonetia papyrifera L.) on soil co-contaminated with As, Cd, Pb, and Zn. The results showed that the co-planting can favor the growth and uptake of As in hyperaccumulator P. vittata L., and improve comprehensive extraction of metal(loid). The total biomass and content of As in the roots of P. vittata L. under the co-planting system were significantly (p < 0.05) improved by 117.5% and 122.0%, respectively, compared with that in monoculture, while the content of As, Cd, Pb and Zn in the tissues of A. donax L., M. alba L. and B. papyrifera L. was slightly increased. The comprehensive accumulation amounts for As, Cd, Pb, and Zn by the four plants co-planting in contaminated soil were higher than that in part of plant's monoculture. Moreover, availability of As, Cd, and Zn in the contaminated soil was decreased in the co-planting system, meanwhile soil urease and acid phosphatase activities in soil significantly (p < 0.05) promoted as compared to the monocultures. The results suggested that positive interaction between hyperaccumulator and three metal(loid)-tolerant species can effectively enhance the growth of P. vittata L., regulate the comprehensive metal(loid)s accumulation capacity, and improve the environmental quality of contaminated soil, which drives high phytoremediation potential for metal(loid)s-contaminated soil by the co-planting.
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Affiliation(s)
- Peng Zeng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha 410083, China.
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Chi Peng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Bo Huang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Wenli Feng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
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Fan Y, Li Z, Zhou T, Zhou S, Wu L, Luo Y, Christie P. Phytoextraction potential of soils highly polluted with cadmium using the cadmium/zinc hyperaccumulator Sedum plumbizincicola. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:733-741. [PMID: 30746960 DOI: 10.1080/15226514.2018.1556592] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A three-crop repeated phytoextraction experiment was conducted using four soils (S1-S4) highly polluted with cadmium (Cd) and two enhanced phytoextraction pot experiments using the most polluted soil (S4) to investigate the feasibility of Cd removal from highly polluted soils using the Cd/zinc (Zn)-hyperaccumulator Sedum plumbizincicola. Shoot biomass showed no significant difference during the repeated phytoextraction experiment on the four test soils and shoot Cd content showed a decreasing trend with the three consecutive crops in soils S1, S2, and S3 but not in soil S4. The Cd removal rates in soils S1, S2, S3, and S4 were 84.5, 81.6, 45.3, and 32.4%, respectively. Rice straw application increased Cd extraction efficiency by 42.6% but the addition of ethylenediaminedisuccinic acid, biochar or nitrogen had no effect on Cd remediation. Shoot Cd content increased significantly (1.57 and 1.71 times, respectively) at low (S0-1) and high (S0-2) sulfur addition rates. Soil extractable-Cd in S0-1 after the experiment showed no significant difference from the control but was 2.43 times higher in S0-2 than in the control. These results indicate that S. plumbizincicola shows good prospects for the phytoextraction of Cd from highly polluted soils and that the process can be enhanced by adding straw and/or sulfur to the soil.
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Affiliation(s)
- Yiqing Fan
- a College of Life Sciences , Anhui Normal University , Wuhu , China
- b Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Zhu Li
- b Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Tong Zhou
- b Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Shoubiao Zhou
- a College of Life Sciences , Anhui Normal University , Wuhu , China
- c College of Environmental Science and Engineering , Anhui Normal University , Wuhu , China
| | - Longhua Wu
- b Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Yongming Luo
- b Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Peter Christie
- b Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
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Zeng P, Guo Z, Xiao X, Peng C, Feng W, Xin L, Xu Z. Phytoextraction potential of Pteris vittata L. co-planted with woody species for As, Cd, Pb and Zn in contaminated soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:594-603. [PMID: 30205349 DOI: 10.1016/j.scitotenv.2018.09.055] [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] [Received: 07/25/2018] [Revised: 09/04/2018] [Accepted: 09/04/2018] [Indexed: 05/27/2023]
Abstract
The objective of this study was to determine the phytoextraction potential of a hyperaccumulator co-planted with a large biomass of woody plant in metal(loid)-contaminated soil. A pot experiment was conducted for 270 days (d) to study the growth, physiological responses, and metal(loid)s accumulation characteristics of plants, which included a shade-requiring, As-hyperaccumulator perennial herb, Pteris vittata L., co-planted with a woody tree, namely Morus alba L. or Broussonetia papyrifera L., for soil contaminated with arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn). The results showed that the biomass, photosynthetic pigment contents, antioxidant enzyme activity, and uptake of As in P. vittata L. were significantly enhanced by co-planting with M. alba L. or B. papyrifera L. Especially, the uptake of As by P. vittata L. was significantly (p < 0.05) increased by 80.0% and 64.2% when it was co-planted with M. alba L. or B. papyrifera L., respectively, while the As, Cd, Pb, and Zn contents of both M. alba L. and B. papyrifera L. were not significantly promoted by the co-planting. The comprehensive phytoextraction of metal(loid)s could be optimized by the co-planting of P. vittata L. with M. alba L. or B. papyrifera L. The total amount of As in the shoots from co-planting species was significantly (p < 0.05) higher than that of the monoculture with M. alba L. or B. papyrifera L., and that of Cd and Zn in the shoots was significantly (p < 0.05) higher than that of the monoculture with P. vittata L. The results showed that the co-planting of P. vittata L. with M. alba L. or B. papyrifera L. can alleviate the toxic effects of metal(loid)s on plant growth and improve the comprehensive phytoextraction amounts of metal(loid)s, and is a promising strategy for remediation of metal(loid)-contaminated soil.
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Affiliation(s)
- Peng Zeng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Zhaohui Guo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China.
| | - Xiyuan Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Chi Peng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Wenli Feng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Liqing Xin
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Zhi Xu
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
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Liu H, Wang H, Zhang Y, Wang H, Yang J, Liu J, Shi Y. Comparison of heavy metal accumulation and cadmium phytoextraction rates among ten leading tobacco (Nicotiana tabacum L.) cultivars in China. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:699-706. [PMID: 30656970 DOI: 10.1080/15226514.2018.1556589] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cadmium (Cd) contamination is one of the most serious global environmental problems, and phytoremediation, which uses Cd-accumulator plants, is potentially one of the sustainable solutions. Pot experiments with natural and Cd-amended soils were conducted to investigate the accumulation of heavy metals in 10 leading cultivars of tobacco in China. The extraction ability and profiles of Cd accumulation among plant organs were also analyzed. The tobacco roots accumulated cobalt, nickel, and Cd, while the leaf highly bioaccumulated Cd and lowly accumulated zinc, selenium and mercury. The transport from the tobacco stem to the leaf plays a critical role in the accumulation of these elements. The ratios of Cd concentration in the leaves at lower, middle and upper positions were comparatively stable. The high Cd-extracting cultivars were "Hongda", "NC89" and "Zhongyan 100" when grown in normal soils, "CuiBi 1" and "Hongda" in moderately contaminated soils, and "YuYan 87", "LongJiang 851" and "K326" in severely contaminated soils. Tobacco leaves could accumulate about 80% of the total Cd extracted from the soil by the plant. Considering the Cd-extraction limitations exhibited by leading tobacco cultivars, screening of germplasm resources for high or low levels of Cd-accumulation is still an important target for the future.
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Affiliation(s)
- Haiwei Liu
- a Key Laboratory of Tobacco Biology and Processing (Ministry of Agriculture) , Tobacco Research Institute, Chinese Academy of Agricultural Sciences , Qingdao , Shandong Province , China
| | - Haiyun Wang
- a Key Laboratory of Tobacco Biology and Processing (Ministry of Agriculture) , Tobacco Research Institute, Chinese Academy of Agricultural Sciences , Qingdao , Shandong Province , China
| | - Yan Zhang
- a Key Laboratory of Tobacco Biology and Processing (Ministry of Agriculture) , Tobacco Research Institute, Chinese Academy of Agricultural Sciences , Qingdao , Shandong Province , China
| | - Haohao Wang
- a Key Laboratory of Tobacco Biology and Processing (Ministry of Agriculture) , Tobacco Research Institute, Chinese Academy of Agricultural Sciences , Qingdao , Shandong Province , China
| | - Jiashuo Yang
- a Key Laboratory of Tobacco Biology and Processing (Ministry of Agriculture) , Tobacco Research Institute, Chinese Academy of Agricultural Sciences , Qingdao , Shandong Province , China
| | - Jikun Liu
- a Key Laboratory of Tobacco Biology and Processing (Ministry of Agriculture) , Tobacco Research Institute, Chinese Academy of Agricultural Sciences , Qingdao , Shandong Province , China
| | - Yi Shi
- a Key Laboratory of Tobacco Biology and Processing (Ministry of Agriculture) , Tobacco Research Institute, Chinese Academy of Agricultural Sciences , Qingdao , Shandong Province , China
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Zhou J, Zhou T, Li Z, Wu L, Luo Y, Christie P. Differences in phytoextraction by the cadmium and zinc hyperaccumulator Sedum plumbizincicola in greenhouse, polytunnel and field conditions. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 20:1400-1407. [PMID: 30652504 DOI: 10.1080/15226514.2018.1488808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Differences in growth conditions in the glasshouse and in the field may affect the consistency of phytoextraction results. Two crops of the hyperaccumulator Sedum plumbizincicola were grown in six contrasting soils in pot experiments under three different sets of growth conditions (glasshouse, polytunnel and field) to compare the phytoextraction of cadmium (Cd) and zinc (Zn). The total shoot biomass of two crops in the glasshouse was significantly smaller than in the polytunnel or field. However, in general there were no significant differences in total shoot metal uptake of two crops per pot among three sets of growth conditions. And greater decreases in soil metal than plant uptake in the polytunnel and field in an acid soil indicate high leaching losses of soil metals in the polytunnel and field, and this was confirmed by analysis of metal concentrations in soil profiles. This brings into question on the validity of estimating the practical applicability of phytoextraction based only on plant metal uptake in glasshouse conditions. It is advisable to examine leaching losses in acid soils in the field when estimating the duration of phytoextraction.
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Affiliation(s)
- Jiawen Zhou
- a Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
- b University of the Chinese Academy of Sciences , Beijing , China
| | - Tong Zhou
- a Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Zhu Li
- a Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Longhua Wu
- a Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Yongming Luo
- a Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
| | - Peter Christie
- a Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing , China
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Li JT, Gurajala HK, Wu LH, van der Ent A, Qiu RL, Baker AJM, Tang YT, Yang XE, Shu WS. Hyperaccumulator Plants from China: A Synthesis of the Current State of Knowledge. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:11980-11994. [PMID: 30272967 DOI: 10.1021/acs.est.8b01060] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Hyperaccumulator plants are the material basis for phytoextraction research and for practical applications in decontaminating polluted soils and industrial wastes. China's high biodiversity and substantial mineral resources make it a global hotspot for hyperaccumulator plant species. Intensive screening efforts over the past 20 years by researchers working in China have led to the discovery of many different hyperaccumulators for a range of elements. In this review, we present the state of knowledge on all currently reported hyperaccumulator species from China, including Cardamine hupingshanensis (selenium, Se), Dicranopteris dichotoma (rare earth elements, REEs), Elsholtzia splendens (copper, Cu), Phytolacca americana (manganese, Mn), Pteris vittata (arsenic, As), Sedum alfredii, and Sedum plumbizincicola (cadmium/zinc, Cd/Zn). This review covers aspects of the ecophysiology and molecular biology of tolerance and hyperaccumulation for each element. The major scientific advances resulting from the study of hyperaccumulator plants in China are summarized and synthesized.
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Affiliation(s)
- Jin-Tian Li
- School of Life Sciences , South China Normal University , Guangzhou 510631 , P.R. China
| | - Hanumanth Kumar Gurajala
- College of Environmental & Resources Science , Zhejiang University , Hangzhou 310058 , P.R. China
| | - Long-Hua Wu
- Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , Brisbane , Australia
- Laboratoire Sols et Environnement, UMR , Université de Lorraine - INRA , Nancy 1120 , France
| | - Rong-Liang Qiu
- School of Environmental Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , P.R. China
| | - Alan J M Baker
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , Brisbane , Australia
- Laboratoire Sols et Environnement, UMR , Université de Lorraine - INRA , Nancy 1120 , France
- School of BioSciences , The University of Melbourne , Victoria 3010 , Australia
| | - Ye-Tao Tang
- School of Environmental Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , P.R. China
| | - Xiao-E Yang
- College of Environmental & Resources Science , Zhejiang University , Hangzhou 310058 , P.R. China
| | - Wen-Sheng Shu
- School of Life Sciences , South China Normal University , Guangzhou 510631 , P.R. China
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48
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Das A, Osborne JW. Monitoring the stress resistance of Pennisetum purpureum in Pb (II) contaminated soil bioaugmented with Enterobacter cloacae as defence strategy. CHEMOSPHERE 2018; 210:495-502. [PMID: 30025367 DOI: 10.1016/j.chemosphere.2018.07.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/14/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Abstract
Lead (Pb) is reported to have negative effects on the biogeochemical behaviour of the plant growth. In recent years, the significance of rhizoremediation of heavy metals has been of great focus aiding in the development rates of plants under stressed conditions. The present study evaluated the physio-biochemical response of Pennisetum purpureum to different concentrations of Pb (II) viz., 0, 50, 100 and 150 mg kg-1 in the form of lead (II) nitrate. The pre-characterized PGPR strain, Enterobacter cloacae - KU598849 was used to augment the plants. After Pb exposure for 45 d, parameters such as plant growth, lead accumulation, H2O2 content, MDA content, protein, proline content and antioxidant enzymatic activities were quantified. Results illustrated that increasing Pb concentration reduced the early growth, metal accumulation, protein content and affected physio-biochemical changes by causing oxidative damage in plants. Upon augmentation of the bacterial inoculum, the plants significantly resisted the toxic effects of Pb. Increased Pb bioaccumulation pattern was recorded in roots than shoots, were highest uptake was found to be 72 mg kg-1 dry weight when exposed to 150 mg kg-1 Pb concentration. Lead supplementation increased the activities of malonylaldehyde (MDA), superoxide dismutase (SOD), peroxidase (POX), ascorbate peroxidase (APX) and catalase (CAT) in P. purpureum. Bacterial bioaugmentation resulted in the reduction of the oxidative stress aided with reduced antioxidant enzyme activities indicating the minimization of the damages under stress.
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Affiliation(s)
- Anamika Das
- School of BioSciences and Technology, Vellore Institute of Technology, Vellore, 632014 Tamil Nadu, India.
| | - Jabez W Osborne
- School of BioSciences and Technology, Vellore Institute of Technology, Vellore, 632014 Tamil Nadu, India.
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Bian F, Zhong Z, Wu S, Zhang X, Yang C, Xiong X. Comparison of heavy metal phytoremediation in monoculture and intercropping systems of Phyllostachys praecox and Sedum plumbizincicola in polluted soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:490-498. [PMID: 28949764 DOI: 10.1080/15226514.2017.1374339] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A bamboo species (Phyllostachys praecox) and a Cd/Zn hyperaccumulator (Sedum plumbizincicola) were tested under different planting systems to compare their heavy metal phytoremediation ability. P. praecox (MP), S. plumbizincicola (MS) and P. praecox × S. plumbizincicola (IPS) plantations were established in Cu, Zn, and Cd-contaminated soil. Soil properties and heavy metal contents in plants were determined and compared after four years of plantation establishment. The rankings of available and total metal contents in soil layers were MP > MS > IPS (0-20 cm) and MP > IPS > MS (20-40 cm, except for Cu), respectively. The Cu and Zn contents in mature bamboo tissues were significantly lower, but the Cd contents in bamboo tissues (except for leaves) higher, in the IPS than in the MP. The bioconcentration and the translocation factors in most of bamboo tissues showed an increasing trend from the MP to the IPS. Heavy metal distribution in plants is greatly affected by the planting patterns. The tested intercropping system of two plant species showed higher biomass productivity, implying more heavy metals can be removed from the soil through the harvesting of plants. Therefore, the IPS leads to significant improvement of soil phytoremediation.
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Affiliation(s)
- Fangyuan Bian
- a Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province , Hangzhou , P. R. China
| | - Zheke Zhong
- a Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province , Hangzhou , P. R. China
| | - Shengchun Wu
- b School of Environment and Resources Sciences, Zhejiang A&F University , Hangzhou , P. R. China
| | - Xiaoping Zhang
- a Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province , Hangzhou , P. R. China
| | - Chuanbao Yang
- a Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province , Hangzhou , P. R. China
| | - Xiaoyi Xiong
- a Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province , Hangzhou , P. R. China
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Burges A, Alkorta I, Epelde L, Garbisu C. From phytoremediation of soil contaminants to phytomanagement of ecosystem services in metal contaminated sites. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:384-397. [PMID: 28862473 DOI: 10.1080/15226514.2017.1365340] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Since the emergence of phytoremediation, much research has focused on its development for (i) the removal of metals from soil and/or (ii) the reduction of metal bioavailability, mobility, and ecotoxicity in soil. Here, we review the lights and shades of the two main strategies (i.e., phytoextraction and phytostabilization) currently used for the phytoremediation of metal contaminated soils, irrespective of the level of such contamination. Both strategies face limitations to become successful at commercial scale and, then, often generate skepticism regarding their usefulness. Recent innovative approaches and paradigms are gradually establishing these phytoremediation strategies as suitable options for the management of metal contaminated soils. The combination of these phytotechnologies with a sustainable and profitable site use (a strategy called phytomanagement) grants value to the many benefits that can be obtained during the phytoremediation of metal contaminated sites, such as, for instance, the restoration of important ecosystem services, e.g. nutrient cycling, carbon storage, water flow regulation, erosion control, water purification, fertility maintenance, etc.
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Affiliation(s)
- Aritz Burges
- a Department of Conservation of Natural Resources , NEIKER-Tecnalia, Basque Institute of Agricultural Research and Development, Soil Microbial Ecology Group , Derio , Spain
| | - Itziar Alkorta
- b Department of Biochemistry and Molecular Biology , BIOFISIKA Institute (CSIC-UPV/EHU), University of the Basque Country , Bilbao , Spain
| | - Lur Epelde
- a Department of Conservation of Natural Resources , NEIKER-Tecnalia, Basque Institute of Agricultural Research and Development, Soil Microbial Ecology Group , Derio , Spain
| | - Carlos Garbisu
- a Department of Conservation of Natural Resources , NEIKER-Tecnalia, Basque Institute of Agricultural Research and Development, Soil Microbial Ecology Group , Derio , Spain
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