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Wang S, Liu J, Liu Y, Tian C. Application of rhizobium inoculation in regulating heavy metals in legumes: A meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:173923. [PMID: 38880144 DOI: 10.1016/j.scitotenv.2024.173923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/21/2024] [Accepted: 06/09/2024] [Indexed: 06/18/2024]
Abstract
Rhizobium inoculation has been widely applied to alleviate heavy metal (HM) stress in legumes grown in contaminated soils, but it has generated inconsistent results with regard to HM accumulation in plant tissues. Here, we conducted a meta-analysis to assess the performance of Rhizobium inoculation for regulating HM in legumes and reveal the general influencing factors and processes. The meta-analysis showed that Rhizobium inoculation in legumes primarily increased the total HM uptake by stimulating plant biomass growth rather than HM phytoavailability. Inoculation had no significant effect on the average shoot HM concentration (p > 0.05); however, it significantly increased root HM uptake by 61 % and root HM concentration by 7 % (p < 0.05), indicating safe agricultural production while facilitating HM phytostabilisation. Inoculation decreased shoot HM concentrations and increased root HM uptake in Vicia, Medicago and Glycine, whereas it increased shoot HM concentrations in Sulla, Cicer and Vigna. The effects of inoculation on shoot biomass were suppressed by nitrogen fertiliser and native microorganisms, and the effect on shoot HM concentration was enhanced by high soil pH, organic matter content, and phosphorous content. Inoculation-boosted shoot nutrient concentration was positively correlated with increased shoot biomass, whereas the changes in pH and organic matter content were insufficient to significantly affect accumulation outcomes. Nitrogen content changes in the soil were positively correlated with changes in root HM concentration and uptake, whereas nitrogen translocation changes in the tissues were positively correlated with changes in HM translocation. Phosphorus solubilisation could improve HM phytoavailability at the expense of slight biomass promotion. These results suggest that the diverse growth-promoting characteristics of Rhizobia influence the trade-off between biomass-HM phytoavailability and HM translocation, impacting HM accumulation outcomes. Our findings can assist in optimising the utilisation of legume-Rhizobium systems in HM-contaminated soils.
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Affiliation(s)
- Shiqi Wang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinbiao Liu
- Agricultural College, Heilongjiang Bayi Agricultural University, Daqing 163317, China
| | - Yalan Liu
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi 830011, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Changyan Tian
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi 830011, China.
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Sun X, Wang M, Qin L, Yu L, Wang J, Zheng H, Zhou W, Chen S. Cellular Cd 2+ fluxes in roots confirm increased Cd availability to rice (Oryza sativa L.) induced by soil acidifications. J Environ Sci (China) 2024; 139:516-526. [PMID: 38105073 DOI: 10.1016/j.jes.2023.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/09/2023] [Accepted: 06/09/2023] [Indexed: 12/19/2023]
Abstract
Soil acidifications become one of the main causes restricting the sustainable development of agriculture and causing issues of agricultural product safety. In order to explore the effect of different acidification on soil cadmium (Cd) availability, soil pot culture and hydroponic (soil potting solution extraction) were applied, and non-invasive micro-test technique (NMT) was combined. Here three different soil acidification processes were simulated, including direct acidification by adding sulfuric acid (AP1), acid rain acidification (AP2) by adding artificial simulated acid rain and excessive fertilization acidification by adding (NH4)2SO4 (AP3). The results showed that for direct acidification (AP1), DTPA-Cd concentration in field soils in Liaoning (S1) and Zhejiang (S2) increased by 0.167 - 0.217 mg/kg and 0.181 - 0.346 mg/kg, respectively, compared with control group. When soil pH decreased by 0.45 units in S1, the Cd content of rice stems, leaves and roots increased by 0.48 to 6.04 mg/kg and 2.58 to 12.84 mg/kg, respectively, When the pH value of soil S1 and S2 decreased by 0.20 units, the average velocity of Cd2+ at 200 µm increased by 10.03 - 33.11 pmol/cm2/sec and 21.33 -52.86 pmol/cm2/sec, respectively, and followed the order of AP3 > AP2 > AP1. In summary, different acidification measures would improve the effectiveness of Cd, under the same pH reduction condition, fertilization acidification increased Cd availability most significantly.
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Affiliation(s)
- Xiaoyi Sun
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Meng Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Luyao Qin
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lei Yu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jing Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Han Zheng
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Wenneng Zhou
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China.
| | - Shibao Chen
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Tapia Y, Salazar O, Joven A, Castillo B, Urdiales C, Garcia A, Ihle C, Acuña E. Evaluation of sulfate rhizofiltration by Carpobrotus chilensis for treating mining waters. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024:1-8. [PMID: 38584512 DOI: 10.1080/15226514.2024.2338136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Chile, the world's leading copper producer, generates significant volumes of mining waters, some of which cannot be recirculated into the production process. These mining waters are characterized by elevated sulfate (SO 4 2 - ) concentrations, requiring sustainable management strategies for potential reuse. This study aims to evaluate the rhizofiltration technique using Carpobrotus chilensis for treating mining waters with a high SO 4 2 - concentration. Initially, the mining waters exhibited a pH of 7.97 ± 0.16 and a SO 4 2 - concentration of 2,743 ± 137 mg L-1, while the control water had a pH of 7.88 ± 0.08 and a SO 4 2 - concentration of 775 ± 19.0 mg L-1. The plants were hydroponically cultivated in 40 L containers with mining waters and drinking water as a control. Over an 8-week period, the pH of the mining water decreased to 3.12 ± 0.01, and the SO 4 2 - concentration declined to 2,200 ± 110 mg L-1. Notably, the fresh weight of roots was significantly higher in plants grown in mining water (22.2 ± 6.66 g) compared to those in the control treatment (14.3 ± 4.28 g). However, an undesirable increase in the acidity was observed in the mining waters after rhizofiltration, which was attributed to hydrogen sulfate (HSO4-) and/or root exudates. Despite the unexpected increase in acidity, C. chilensis effectively reduced the concentration of SO 4 2 - in mining waters by 20%. Additionally, the C. chilensis roots accumulated 4.84 ± 1.40% of sulfur (S), a level comparable to thiophore plants. This study provides evidence that this non-aquatic plant can be used in sulfate rhizofiltration.
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Affiliation(s)
- Y Tapia
- Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
- Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile
| | - O Salazar
- Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - A Joven
- Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - B Castillo
- Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - C Urdiales
- Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago, Chile
| | - A Garcia
- Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile
| | - C Ihle
- Advanced Mining Technology Center, Universidad de Chile, Santiago, Chile
| | - E Acuña
- Pontificia Universidad Católica de Chile, Escuela de Ingeniería, Santiago, Chile
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Li J, Ma H, Yu H, Feng L, Xia X, He S, Chen X, Zhao Q, Wei L. Effect and potential mechanisms of sludge-derived chromium, nickel, and lead on soil nitrification: Implications for sustainable land utilization of digested sludge. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133552. [PMID: 38246061 DOI: 10.1016/j.jhazmat.2024.133552] [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: 10/02/2023] [Revised: 01/06/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024]
Abstract
Increasing occurrence of heavy metals (HMs) in sewage sludge threatens its widespread land utilization in China due to its potential impact on nutrient cycling in soil, requiring a better understanding of HM-induced impacts on nitrification. Herein, lab-scale experiments were conducted over 185-day, evaluating the effect of sludge-derived chromium (Cr3+), nickel (Ni2+), and lead (Pb2+) on soil nitrification at different concentrations. Quantitative polymerase chain reaction and linear regression results revealed an inhibitory sequence of gene abundance by HMs' labile fraction: ammonia-oxidizing bacteria (AOB)-ammonia monooxygenase (amoA)> nitrite oxidoreductase subunit alpha (nxrA)> nitrite oxidoreductase subunit beta (nxrB). The toxicity of HMs' incremental labile fraction decreased in the order of Ni2+>Cr3+>Pb2+, with respective threshold values of 5.01, 24.03 and 38.42 mg·kg-1. Furthermore, extending incubation time reduced HMs inhibition on ammonia oxidation, mainly related to their fraction bound to carbonate minerals. Random Forest analysis, variation partitioning analysis, and Mantel test indicated that soil physicochemical properties primarily affected nitrification genes, especially in the test of Cr3+ on AOB-amoA, nxrA, nxrB, Ni2+ for complete ammonia-oxidizing bacteria-amoA, and Pb2+ for nxrA and nxrB. These findings underline the importance of labile HMs fractions and soil physicochemical properties to nitrification, guiding the establishment of HM control standards for sludge utilization.
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Affiliation(s)
- Jianju Li
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hao Ma
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Hang Yu
- Harbin Rongyi Huizhi Technology Co., Ltd., Harbin 150090, China
| | - Likui Feng
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xinhui Xia
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shufei He
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xinwei Chen
- Elite Engineers School, Harbin Institute of Technology, Harbin 150090, China
| | - Qingliang Zhao
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Liangliang Wei
- State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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Ren Q, Li N, Liu R, Ma X, Sun J, Zeng J, Li Q, Wang M, Chen X, Wu X, Yang L. Nitric oxide (NO) involved in Cd tolerance in NHX1 transgenic duckweed during Cd stress. PLANT SIGNALING & BEHAVIOR 2022; 17:2065114. [PMID: 35470786 PMCID: PMC9045825 DOI: 10.1080/15592324.2022.2065114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 05/30/2023]
Abstract
Anthropogenic activities cause heavy metal pollution, such as cadmium (Cd). Na+/H+ antiporter (NHX1) transgenic duckweed showed Cd tolerance in our previous study, and the signal mechanism needs to be explored. As an important signal molecule, nitric oxide (NO) is involved in a number of functions under abiotic stress response. This study analyzed the levels of endogenous NO in wild-type (WT) duckweed and NHX1 duckweed under Cd treatment. The results showed that after 24 h Cd treatment, the endogenous NO level of WT duckweed decreased, which was significantly lower than that in NHX1 duckweed. Studies have proved that NHX1 influences pH. The level of NO in this study has been investigated at different pH. The NO level was the highest in the duckweed cultured with pH 5.3. Nitrate reductase gene expression was down-regulated and NO synthesis was decreased under Cd stress in WT duckweed. This study showed that NO level has been modified in NHX1 duckweed, which could be influcened by pH.
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Affiliation(s)
- Qiuting Ren
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
| | - Na Li
- School of Basic Medical Sciences, Fudan University, Shanghai, Yangpu, China
| | - Ruxin Liu
- Center for Infection and Immunity Studies, School of Medicine Sun Yat-san University, Shanghai, China
| | - Xu Ma
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
| | - Jinge Sun
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
| | - Jianyao Zeng
- School of Medicine, Shanghai University, Shanghai, Baoshan, China
| | - Qingqing Li
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
| | - Mingwei Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
| | - Xinglin Chen
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
| | - Xiaoyu Wu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
| | - Lin Yang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, Xiqing, China
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Yi L, Wu M, Yu F, Song Q, Zhao Z, Liao L, Tong J. Enhanced cadmium phytoremediation capacity of poplar is associated with increased biomass and Cd accumulation under nitrogen deposition conditions. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 246:114154. [PMID: 36228354 DOI: 10.1016/j.ecoenv.2022.114154] [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: 01/21/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Nitrogen (N) deposition plays a significant role in soil cadmium (Cd) phytoremediation, and poplar has been considered for the remediation of contaminated soil because of its enormous biomass and strong Cd resistance. To reveal the underlying physiological and root phenotypic mechanisms of N deposition affecting Cd phytoextraction in poplar, we assessed root phenotypic characteristics, Cd absorption and translocation, chlorophyll fluorescence performance, and antioxidant enzyme activities of a clone of Populus deltoides × P. nigra through combined greenhouse Cd and N experiments. Our results showed that Cd significantly changed the root phenotype by reducing root length, tip number, and diameter. Cd also caused the peroxidation of lipids, damaged the photosystem II (PSII) reaction centre, and reduced photosynthetic capacity, resulting in a decrease in biomass accumulation in poplar. The N60 (60 kg N·ha-1·yr-1) and N90 (90 kg N·ha-1·yr-1) treatments promoted the net photosynthetic rate of poplar by increasing the activity of antioxidant enzymes and proline content and repairing the PSII reaction centre, thus increasing the biomass accumulation of poplar exposed to Cd stress. Simultaneously, the N60 and N90 treatments might have increased Cd uptake from the soil by upregulating total root length, root tips, and fine root length. Cd mainly accumulated in roots and stems but not in leaves. The N30 (30 kg N·ha-1·yr-1) treatment had no obvious effects on these parameters compared with the single Cd treatment. Consequently, our study suggested that adequate N can improve biomass and Cd accumulation to enhance the phytoremediation capacity of poplar for Cd, which might be related to the improvement of leaf physiological defence and the change in root phenotypic characteristics.
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Affiliation(s)
- Lita Yi
- College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Mengyuan Wu
- College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Fei Yu
- College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China.
| | - Qi Song
- Department of Health and Agriculture, Hangzhou Wanxiang Polytechnic, Hangzhou 310023, China
| | - Zihao Zhao
- College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Liang Liao
- College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Jiali Tong
- College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
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7
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Xiao C, Li L, Luo B, Liu Y, Zeng Q, Peng L, Luo S. Different effects of the application of urea combined with nitrification inhibitor on cadmium activity in the rice-rape rotation system. ENVIRONMENTAL RESEARCH 2022; 214:113800. [PMID: 35787366 DOI: 10.1016/j.envres.2022.113800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/23/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) is one of the most harmful and widespread pollutants in agricultural soil, where it is readily taken up by plants and threatens human health through the food chain. Nitrification inhibitors (NIs) are usually used to reduce nitrogen (N) loss in soil and increase the nitrogen use efficiency of crops. However, information regarding the Cd transfer in soil and crops system with the application of urea combined with NIs is limited. Especially, the influences of NIs on Cd availability in the rice-rape rotation are unclear. Here, we studied the pH, N speciation, and Cd activity in soils, as well as Cd accumulation in rice and rapeseed tissues that resulted after the application of dicyandiamide (DCD) and 3,4-dimethylpyrazole phosphate (DMPP) under alternating redox conditions. Rice and rape experiments appeared to represent an opposite phenomenon in the treatments of urea + NIs. Addition of NIs increased the pH of paddy soil, but decreased the pH of rapeseed soil. The treatments of urea + DCD and urea + DMPP0.5% produced a significantly lower concentration of extractable Cd in the paddy soil, and reduced the accumulation of Cd in brown rice. For rapeseed, the urea + NI treatments enhanced the Cd activity and increased the accumulation of Cd in rapeseed. It is proposed that NIs could be used to regulate N transformation in agricultural soils and inhibited Cd uptake by rice in urea fertilization. Moreover, the application of NIs combined with urea would potentially favor phytoextraction of Cd by rape, which is a ideal candidate for phytoremediation in Cd-contaminated soil.
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Affiliation(s)
- Chenfeng Xiao
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China.
| | - Li Li
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Bihao Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Yuling Liu
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Qingru Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Liang Peng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China
| | - Si Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, PR China.
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Shi R, Liang L, Liu W, Zeb A. Kochia scoparia L., a newfound candidate halophyte, for phytoremediation of cadmium-contaminated saline soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:44759-44768. [PMID: 35138541 DOI: 10.1007/s11356-022-18895-8] [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: 10/06/2021] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
In recent years, heavy metal pollution in saline soil is increasingly severe due to the rapid development of industry and agriculture. Halophytes can survive at higher concentrations of salt and heavy metal, which make them suitable candidates for the phytoremediation of heavy metals in saline soils. In the present study, the halophyte plant Kochia scoparia (L.) Schrad. seedlings were exposed to different doses of Cd (0, 5, 10, 30 mg/kg) and NaCl (0, 200, 400, 800 mM) to explore its tolerance and phytoremediation ability for Cd. There was no significant toxic effect of Cd on the K. scoparia seedlings. NaCl reduced the biomass of K. scoparia compared with the control, but did not show any visible toxic symptom. Furthermore, Cd accumulation in K. scoparia is mainly distributed in the shoot; especially when exposed to low-Cd (5 mg/kg) treatment, the accumulation of Cd in the shoots was up to 5.42-22.25 mg/kg, which was 3.18-53.4 times of that in the roots. Moreover, the contents of glutathione and oxalate in plants increased gradually with the increase of NaCl concentration. Under the treatment of 800 mM NaCl without Cd, the content of glutathione reached the highest 51.21 μg/g, and the proportion of oxalate reached the highest 28.76% under the treatment of 30 mg/kg Cd with 400 Mm NaCl. Finally, we also found the significant alterations of cadmium chemical forms in rhizosphere soil with the addition of NaCl. Overall, K. scoparia could be an efficient and valuable candidate for the phytoextraction of low-Cd (5 mg/kg)-contaminated saline soil.
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Affiliation(s)
- Ruiying Shi
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Tianjin, 300350, People's Republic of China
| | - Lichen Liang
- Nanjing Institute of Environmental Sciences of the Ministry of Environmental Protection (NIES), Nanjing, 210042, China
| | - Weitao Liu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Tianjin, 300350, People's Republic of China.
| | - Aurang Zeb
- MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Tianjin, 300350, People's Republic of China
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9
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Li R, Zhang X, Wang G, Kong L, Guan Q, Yang R, Jin Y, Liu X, Qu J. Remediation of cadmium contaminated soil by composite spent mushroom substrate organic amendment under high nitrogen level. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128345. [PMID: 35149508 DOI: 10.1016/j.jhazmat.2022.128345] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/09/2022] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
Cadmium (Cd) contamination in soil poses a serious threat to ecological environment and crop quality, especially under high nitrogen level. Here, the efficiency of composite organic amendment (spent mushroom substrate and its biochar) on remediation of Cd contaminated soil under high nitrogen level has been studied through a 42 days' soil incubation experiment. The results showed: (i) the application of composite organic amendment minimized the repercussions of high nitrogen and significantly reduced the exchangeable Cd proportion by 28.3%-29.5%, especially for Ca(NO3)2 treatment; (ii) the application of composite organic amendment improved the physicochemical properties of soil, such as pH, CEC and organic matter content increased by 0.63-0.99 unit, 39.69%-45.00% and 7.77%-11.47%, and EC decreased by 16.21%-44.47% compared with non-amendment Cd-contaminated soil, respectively; (iii) the application of composite organic amendment significantly increased the soil enzyme activities and microbial biomass, among which urease activity was increased most by 12.06-16.42 mg·g-1·d-1, and the copy number of AOA was decreased by 30.6%- 92.0%, and the copy number of AOB was increased most by about 45 times. In brief, the composite organic amendment can alleviate the adverse effects of Cd and nitrogen on the soil, but its long-term efficacy needs to be verified in further field study.
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Affiliation(s)
- Rui Li
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Xu Zhang
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Guoliang Wang
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Linghui Kong
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Qingkai Guan
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Rui Yang
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Yu Jin
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Xuesheng Liu
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Juanjuan Qu
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.
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Zhao H, Lin J, Wang X, Shi J, Dahlgren RA, Xu J. Dynamics of Soil Microbial N-Cycling Strategies in Response to Cadmium Stress. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:14305-14315. [PMID: 34617741 DOI: 10.1021/acs.est.1c04409] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Globally increasing trace metal contamination of soils requires a better mechanistic understanding of metal-stress impacts on microbially mediated nutrient cycling. Herein, a 5-month laboratory experiment was employed to assess the effects of cadmium (Cd) on soil microbial N-cycling processes and associated functional gene abundance, with and without urea amendment. In non-N-amended soils, Cd progressively stimulated microbial populations for N acquisition from initial dissolved organic N (DON) to later recalcitrant organic N. The acceleration of N catabolism was synchronously coupled with C catabolism resulting in increased CO2/N2O fluxes and adenosine triphosphate (ATP) contents. The abundance of microbes deemed inefficient in N catabolism was gradually repressed after an initial stimulation period. We posit that enhanced exergonic N processes diminished the need for endergonic activities as a survival strategy for N communities experiencing metal stress. With urea amendment, Cd exhibited an initial stimulation effect on soil nitrification and a later a promotion effect on mineralization, along with an increase in the associated microbial populations. In N-amended soils, Cd accelerated N/C transformation processes, but decreased N2O and CO2 fluxes by 19 and 14%, respectively. This implies that under eutrophic conditions, Cd synchronously altered microbial C/N metabolism from a dominance of catabolic to anabolic processes. These results infer a nutrient-based adjustment of microbial N-cycling strategies to enhance their metal resistance.
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Affiliation(s)
- Haochun Zhao
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Jiahui Lin
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Xuehua Wang
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Jiachun Shi
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Randy A Dahlgren
- Department of Land, Air and Water Resources, University of California, Davis, California 95616, United States
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
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11
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Bandara T, Franks A, Xu J, Chathurika JBAJ, Tang C. Biochar aging alters the bioavailability of cadmium and microbial activity in acid contaminated soils. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126666. [PMID: 34587715 DOI: 10.1016/j.jhazmat.2021.126666] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
The effects of biochar aging on heavy-metal bioavailability and microbial activity are not fully understood. This study determined the effect over 270 days of poultry-litter biochar (PBC) and sugar-gum-wood biochar (SBC) on the bioavailability of Cd and microbial activity in acidic soils differing in organic matter content. Soil basal and substrate-induced respirations, microbial properties, Cd bioavailability and plant Cd bioaccumulation were evaluated at 1, 30, 90 and 270 days. The addition of PBC decreased Cd bioaccumulation by 81% and 85% while SBC decreased bioaccumulation by 47% and 56% in high (Chromosol) and low (Sodosol) organic matter soils, respectively, at Day 1. By Day 270, Cd bioaccumulation significantly (P < 0.05) increased in SBC-amended soils but decreased in PBC-amended soils. The addition of PBC increased both basal and substrate-induced microbial respirations compared to the other treatments over 270-day aging. However, SBC increased microbial biomass C compared to the PBC after Day 30. Aging decreased microbial respiration and biomass C in biochar-amended soils. It is concluded that Cd bioaccumulation increased in SBC-amended soils during aging whereas the PBC decreased Cd bioaccumulation and that the selection of biochar is important to enhance remediation efficiency in the long term.
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Affiliation(s)
- Tharanga Bandara
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Victoria 3086, Australia
| | - Ashley Franks
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne Campus, Bundoora, Victoria 3086, Australia; Centre for Future Landscapes, La Trobe University, Melbourne Campus, Bundoora, Victoria 3086, Australia
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - J B A J Chathurika
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Victoria 3086, Australia
| | - Caixian Tang
- Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Victoria 3086, Australia.
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12
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He X, Xu M, Wei Q, Tang M, Guan L, Lou L, Xu X, Hu Z, Chen Y, Shen Z, Xia Y. Promotion of growth and phytoextraction of cadmium and lead in Solanum nigrum L. mediated by plant-growth-promoting rhizobacteria. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111333. [PMID: 32979802 DOI: 10.1016/j.ecoenv.2020.111333] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/15/2020] [Accepted: 09/10/2020] [Indexed: 05/27/2023]
Abstract
Plant growth-promoting rhizobacteria (PGPR) are a specific category of microbes that improve plant growth and promote greater tolerance to metal stress through their interactions with plant roots. We evaluated the effects of phytoremediation combining the cadmium accumulator Solanum nigrum L. and two Cd- and Pb-resistant bacteria isolates. To understand the interaction between PGPR and their host plant, we conducted greenhouse experiments with inoculation treatments at Nanjing Agricultural University (Jiangsu Province, China), in June 2018. Two Cd- and Pb-resistant PGPR with various growth-promoting properties were isolated from heavy metal-contaminated soil. 16S rRNA analyses indicated that the two isolates were Bacillus genus, and they were named QX8 and QX13. Pot experiments demonstrated that inoculation may improve the rhizosphere soil environment and promote absorption of Fe and P by plants. Inoculation with QX8 and QX13 also enhanced the dry weight of shoots (1.36- and 1.7-fold, respectively) and roots (1.42- and 1.96-fold) of plants growing in Cd- and Pb-contaminated soil, and significantly increased total Cd (1.28-1.81 fold) and Pb (1.08-1.55 fold) content in aerial organs, compared to non-inoculated controls. We also detected increases of 23% and 22% in the acid phosphatase activity of rhizosphere soils inoculated with QX8 and QX13, respectively. However, we did not detect significant differences between inoculated and non-inoculated treatments in Cd and Pb concentrations in plants and available Cd and Pb content in rhizosphere soils. We demonstrated that PGPR-assisted phytoremediation is a promising technique for remediating heavy metal-contaminated soils, with the potential to enhance phytoremediation efficiency and improve soil quality.
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Affiliation(s)
- Xiaoman He
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mingjing Xu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qingpeng Wei
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mingyu Tang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Likang Guan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Laiqing Lou
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaoming Xu
- 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
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing, 210095, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing, 210095, China
| | - Yan Xia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing, 210095, China.
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13
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Wang H, Chen W, Sinumvayabo N, Li Y, Han Z, Tian J, Ma Q, Pan Z, Geng Z, Yang S, Kang M, Rahman SU, Yang G, Zhang Y. Phosphorus deficiency induces root proliferation and Cd absorption but inhibits Cd tolerance and Cd translocation in roots of Populus × euramericana. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 204:111148. [PMID: 32818843 DOI: 10.1016/j.ecoenv.2020.111148] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/03/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
To disclose how phosphorus deficiency influence phytoremediation of Cd contamination using poplars, root architecture, Cd absorption, Cd translocation and antioxidant defense in poplar roots were investigated using a clone of Populus × euramericana. Root growth was unaltered by Cd exposure regardless of P conditions, while the degree of root proliferation upon P deficiency was changed by high level of Cd exposure. The concentration and content of Cd accumulation in roots were increased by P deficiency. This can be partially explained by the increased expression of genes encoding PM H + -ATPase under the combined conditions of P deficiency and high Cd exposure, which enhanced Cd2+-H+ exchanges and led to an increment of Cd uptake under P deficiency. Despite of the increasing Cd accumulation in roots, the translocation of Cd from roots to aerial tissues sharply decreased upon P deficiency. The relative expression of genes responsible for Cd translocation (HMA4) decreased upon P deficiency and thus inhibited Cd translocation via xylem. GR activity was decreased by P deficiency, which can inhibit the form of GSH and GSH-Cd complexes and decrease Cd translocation via GSH-Cd complexes. The transportation of PC-Cd complexes into vacuole decreased under P deficiency as a result of the low expression of PCS and ABCC1, and thus suppressed Cd tolerance and Cd detoxification in roots. Moreover, P deficiency decreased the levels of antioxidase (GR and CAT) and phytohormones including JA, ABA and GA3, which synchronously reduced antioxidant capacity in roots.
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Affiliation(s)
- Hao Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenyi Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Narcisse Sinumvayabo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yunfei Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zixuan Han
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jing Tian
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qin Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhenzhen Pan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhaojun Geng
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Siqi Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Mingming Kang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Siddiq Ur Rahman
- Department of Computer Science and Bioinformatics, Khushal Khan Khattak University, Karak, Khyber Pakhtunkhwa, 27200, Pakistan
| | - Guijuan Yang
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China.
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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14
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Ji S, Gao L, Chen W, Su J, Shen Y. Urea application enhances cadmium uptake and accumulation in Italian ryegrass. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34421-34433. [PMID: 32557021 DOI: 10.1007/s11356-020-09691-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
Italian ryegrass (Lolium multifolorum Lam.) has a potential phytoextraction capacity for cadmium (Cd), which is considered as the most toxic heavy metal (HM) pollutant in the farmland. The promotion effect of urea application on Italian ryegrass growth has been clarified, while it is not clear whether and how urea application affects Cd accumulation in Italian ryegrass under Cd stress. A 2-year pot experiment was conducted to investigate the effect of urea application on Cd accumulation and related mechanisms by uptake inhibition and kinetics experiments. The results showed that both shoot biomass and Cd concentration under Cd stress were increased by up to 213.37% and 84.74% in 2016 and 38.15% and 47.11% in 2017 after urea application, respectively. The shoot Cd accumulation reached maximum value (910.23 and 630.09 μg pot-1 in 2016 and 2017, respectively) at the level of 300 kg ha-1 urea. Superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) activities were significantly increased by urea application. Compared with control group, urea application significantly improved inhibition ratio of 2, 4-dinitrophenol (DNP) rather than LaCl3 and Ca2+. Cadmium uptake kinetics experiment showed that urea application significantly decreased the Km value and improved the α value (P < 0.01), but no significant effect on the Vmax value (P > 0.05). In conclusion, we proposed that the higher affinity to Cd2+ of the membrane transporter after urea application promoted the active uptake of Cd, which contributed to the effective Cd accumulation capacity in Italian ryegrass.
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Affiliation(s)
- Shuren Ji
- College of Grassland Science, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Limin Gao
- College of Grassland Science, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Wei Chen
- College of Grassland Science, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Jing Su
- College of Grassland Science, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yixin Shen
- College of Grassland Science, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
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15
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Fioroto AM, Albuquerque LGR, Carvalho AAC, Oliveira AP, Rodrigues F, Oliveira PV. Hydroponic growth test of maize sprouts to evaluate As, Cd, Cr and Pb translocation from mineral fertilizer and As and Cr speciation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 262:114216. [PMID: 32155546 DOI: 10.1016/j.envpol.2020.114216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 02/09/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
The present study proposes a maize sprouts hydroponic growth model to evaluate the As, Cd, Cr and Pb translocation from multinutrient fertilizer and to do speciation of As and Cr in this fertilizer and As in parts of plant in order to predict their phytoavailability. X-ray absorption near edge structure (XANES) was employed to speciate As and Cr directly on fertilizer solid sample. Arsenate (AsV) and a solid solution of FeCrO3 were the major species identified in the samples. The sprouts were hydroponically cultivated in water, fertilizer slurry and fertilizer extract media. Concentrations of As, Cd and Pb measured on leaves of maize sprouts ranged from 0.061 to 0.31 mg kg-1, whereas Cr was not translocated to the aerial parts of sprouts. High performance liquid chromatographic with inductively coupled plasma mass spectrometry (HPLC-ICP-MS) analysis was used to determine As speciation in maize sprouts, as well as in the fertilizer extracts and slurries. Arsenate was the only species identified in the initial fertilizer extract and this information is in agreement with the XANES results. However, the reduction of arsenate to arsenite was observed in extracts and slurries collected after sprout growth, probably due to the action of exudates secreted by plant roots. Arsenite was the predominant species identified in sprouts, the high phosphate concentration in the medium may have contributed to reduce arsenate phytoavailability.
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Affiliation(s)
- Alexandre M Fioroto
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, SP, Brazil
| | - Luiza G R Albuquerque
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, SP, Brazil
| | - Alexandrina A C Carvalho
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, SP, Brazil
| | - Aline P Oliveira
- Universidade Federal de São Paulo, Ciências Exatas e da Terra, Diadema, SP, Brazil
| | - Fabio Rodrigues
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, SP, Brazil
| | - Pedro V Oliveira
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, SP, Brazil.
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16
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Effect of Cobalt, Cadmium and Manganese on Nitrogen Removal Capacity of Arthrobacter arilaitensis Y-10. WATER 2020. [DOI: 10.3390/w12061701] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was to investigate the possibility of a simultaneous nitrification–denitrification hypothermic bacterium for applying in Cd(II), Co(II), and Mn(II)-contaminated wastewater. The influence of Cd(II), Co(II), and Mn(II) on the inorganic nitrogen removal capacity of the hypothermia bacterium Arthrobacter arilaitensis Y-10 was determined. The experimental results demonstrated that low concentration of Cd(II) (2.5 mg/L) exhibited no significant impact on bioremediation of ammonium. The nitrate and nitrite removal activities of strain Y-10 were enhanced by 0.1 and 0.25 mg/L of Cd(II), but hindered by more than 0.25 and 0.5 mg/L of Cd(II), respectively. However, the cell growth and denitrification activity ceased immediately once Co(II) was supplemented. In terms of Mn(II), no conspicuous inhibitory impact on ammonium bioremediation was observed even if Mn(II) concentration reached as high as 30 mg/L. The bioremediation of nitrates and nitrites was significantly improved by 0.5 mg/L of Mn(II), and then dropped sharply along with the increase of Mn(II). The order of the degree of inhibitory influence of the three heavy metal ions on the nitrogen bioremediation ability of strain Y-10 was Co(II) > Cd(II) > Mn(II). All the results highlighted that the heterotrophic nitrification was less sensitive to the inhibitory effects of Cd(II), Co(II), and Mn(II) relative to aerobic denitrification.
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17
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Zhao H, Yu L, Yu M, Afzal M, Dai Z, Brookes P, Xu J. Nitrogen combined with biochar changed the feedback mechanism between soil nitrification and Cd availability in an acidic soil. JOURNAL OF HAZARDOUS MATERIALS 2020; 390:121631. [PMID: 31776087 DOI: 10.1016/j.jhazmat.2019.121631] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 10/21/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
Inorganic nitrogen (N) inputs increase soil nitrification, acidification and trace metal toxicity e.g. cadmium (Cd). Biochar (B) has been widely used for metal immobilization. However, little is known about how the combination of N fertilizers with biochar (N-B) changes soil Cd availability through altering nitrification process. Here, (NH4)2SO4 or CO(NH2)2 was applied in combination with biochar to an acidic, artificially enriched Cd contaminated soil. Not as we expected, available Cd did not increase following (NH4)2SO4 or CO(NH2)2 addition. Nitrification and acidification of Cd contaminated soils were greatly inhibited, accompanied by elimination of ammonia-oxidizing bacteria (AOB). Exchangeable H+ of Cd contaminated soils was significantly lower than that of uncontaminated soils, thus inhibiting Cd itself from mobilization. N-B addition nearly halved soil available Cd and significantly increased nitrification by promoting AOB recovery. However, the restored nitrification did not cause soil acidification, due to the high buffering and slow liming effects of biochar. Available Cd continuously decreased with decreasing soil acidity and exchangeable Al. This study firstly demonstrated a feedback between soil nitrification and Cd after N application, and how biochar modified the feedback. Biochar, therefore, provides a feasible strategy for eliminating potential Cd toxicity on both soil biological and chemical processes.
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Affiliation(s)
- Haochun Zhao
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Lu Yu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Mengjie Yu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Muhammad Afzal
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Zhongming Dai
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Philip Brookes
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.
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18
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Kong X, Zhao Y, Tian K, He X, Jia Y, He Z, Wang W, Xiang C, Tian X. Insight into nitrogen and phosphorus enrichment on cadmium phytoextraction of hydroponically grown Salix matsudana Koidz cuttings. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:8406-8417. [PMID: 31900781 DOI: 10.1007/s11356-019-07499-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 12/22/2019] [Indexed: 06/10/2023]
Abstract
Cadmium (Cd) has already caused worldwide concern because of its high biotoxicity to human and plants. This study investigated how nitrogen (N) and phosphorus (P) enrichment alter the toxic morpho-physiological impacts of and accumulation of Cd in hydroponically grown Salix matsudana Koidz cuttings. Our results showed that Cd significantly depressed growth and induced a physiological response on S. matsudana cuttings, exhibiting by reduced biomass, decreased photosynthetic pigment concentrations, and increased soluble protein and peroxidase activity of shoots and roots. N and P enrichment alleviated the Cd toxic effects by increasing production of proline which prevented cuttings from damage by Cd-induced ROS, displaying with decreased malondialdehyde concentration, and stimulated overall Cd accumulation. Enrichment of N and P significantly decreased the upward Cd transfer, combing with enhanced root uptake (stimulated root activity) and retranslocation from stem, resulted in extensive Cd sequestration in S. matsudana roots. In both root and xylem, concentration of Cd is positively correlated with N and P. The improved phytoextraction potential by N and P enrichment was mainly via elevating Cd concentration in roots, probably by increased production of phytochelatins (e.g., proline) which form Cd chelates and help preventing damage from Cd-induced ROS. This study provides support for the application of S. matsudana in Cd phytoextraction even in eutrophic aquatic environments.
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Affiliation(s)
- Xiangshi Kong
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Zhangjiajie, 427000, People's Republic of China
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Yunxia Zhao
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Kai Tian
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Xingbing He
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Zhangjiajie, 427000, People's Republic of China
| | - Yanyan Jia
- Huaiyin Institute of Agricultural Sciences, Huaian, 223001, People's Republic of China
| | - Zaihua He
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Wenwen Wang
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Changguo Xiang
- Key Laboratory for Ecotourism of Hunan Province, School of Tourism and Management Engineering, Jishou University, Zhangjiajie, 427000, People's Republic of China
| | - Xingjun Tian
- School of Life Sciences, Nanjing University, Nanjing, 210023, People's Republic of China.
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, People's Republic of China.
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19
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Huo K, Shangguan X, Xia Y, Shen Z, Chen C. Excess copper inhibits the growth of rice seedlings by decreasing uptake of nitrate. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 190:110105. [PMID: 31884325 DOI: 10.1016/j.ecoenv.2019.110105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
Copper (Cu) toxicity has a deleterious effect on plant growth, and different nitrogen (N) forms have significantly different impacts on the uptake and accumulation of heavy metals by plants. However, it remains unclear how excess Cu inhibits the growth of rice seedlings under different N forms. Here, we examined the mechanism of Cu toxicity inhibiting the growth of rice supplied with different N forms. Rice seedlings were grown in a nutrient solution with 0.81 mmol L-1 N, as ammonium (NH4+), nitrate (NO3-) and NH4+ + NO3-, or without N (0 N) in the presence of 0.2 μmol L-1 CuSO4 or 10 μmol L-1 CuSO4. The inhibition of shoot growth under excess Cu was more pronounced in plants that were supplied with NO3- than NH4+; such inhibition was not induced by higher Cu concentration in shoots. Applied with NO3- alone increased solution pH value up to 6.2, but supplied with NH4+ alone and NH4+ + NO3- decreased solution pH value to 4.0 and 4.2, respectively. The increment of solution pH reduced Cu concentration in shoots of rice supplied with NO3- alone. Copper toxicity decreased NO3- concentrations in rice seedlings that were supplied with NO3- alone but increased the NH4+ concentrations in plants that were supplied with NH4+ or NH4+ + NO3-. High Cu levels reduced the uptake of NO3- in roots by the analysis of net NO3- flux and NO3- assimilation enzymes activity. Under excess Cu, the transcript levels of OsNPF6.5, OsNPF2.2 and OsNPF2.4 genes were suppressed, while OsNRT2.1, OsNRT2.2 and OsNAR2.1 were raised in roots. In conclusion, Cu toxicity inhibits NO3- uptake and upward translocation by modulating the expression level of NO3- transporter genes. The reduction in the concentrations of NO3- and total N decreased shoot growth of rice seedlings when N was supplied as NO3-. Hence, rice seedlings supplied with NO3- had lower shoot biomass than those with NH4+ under Cu stress.
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Affiliation(s)
- Kai Huo
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiangchao Shangguan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yan Xia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chen Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
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20
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Yang C, Qiu W, Chen Z, Chen W, Li Y, Zhu J, Rahman SU, Han Z, Jiang Y, Yang G, Tian J, Ma Q, Zhang Y. Phosphorus influence Cd phytoextraction in Populus stems via modulating xylem development, cell wall Cd storage and antioxidant defense. CHEMOSPHERE 2020; 242:125154. [PMID: 31675575 DOI: 10.1016/j.chemosphere.2019.125154] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/12/2019] [Accepted: 10/19/2019] [Indexed: 05/23/2023]
Abstract
The soils in mining lands with cadmium (Cd) contamination usually are deficient in nutrients. Disclosing how P nutrition and N:P stoichiometric ratio influences Cd accumulation and stress tolerance in stems of Populus spp. will facilitate the phytoremediation of mining sites polluted by Cd. In this study, investigations at the anatomical and physiological levels were conducted using a clone of Populus × euramericana. Both phosphorus deficiency and cadmium exposure inhibited xylem development via reducing cell layers in the xylem. Under P-sufficient condition, appropriate P status and balanced N:P ratio in stem promoted xylem development under Cd exposure via stimulating cell division, which enhanced Cd accumulation in stems. Cd accumulation in cell walls of collenchyma tissues of the stem was enhanced by P application due to increased polysaccharide production and cell wall affinity for Cd. The low P concentrations (0.3-0.4 mg g-1) and imbalanced N:P ratio under P deficiency inhibited the production of APX and ascorbate-GSH cycle, which increased oxidative stress and lipid peroxidation as indicated by high MDA concentration in stem. Under P-sufficient condition, the interactions between phytohormones and antioxidants play crucial roles in the process of antioxidant defense under Cd exposure. In conclusions, appropriate P addition and balanced N:P ratio enhanced secondary xylem development and promoted cadmium accumulation and stress tolerance in Populus stems, which can benefit the phytoextraction of Cd from Cd-contaminated soil.
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Affiliation(s)
- Can Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenwen Qiu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zexin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenyi Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yunfei Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jingle Zhu
- Paulownia R&D Center of State Administration of Forestry and Grassland, Zhengzhou, Henan, 450003, China
| | - Siddiq Ur Rahman
- Department of Computer Science and Bioinformatics, Khushal Khan Khattak University, Karak, Khyber Pakhtunkhwa, 27200, Pakistan
| | - Zixuan Han
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yun Jiang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Guijuan Yang
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Jing Tian
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qin Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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21
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Zhou X, Huang G, Liang D, Liu Y, Yao S, Ali U, Hu H. Influence of nitrogen forms and application rates on the phytoextraction of copper by castor bean (Ricinus communis L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:647-656. [PMID: 31808081 DOI: 10.1007/s11356-019-06768-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/14/2019] [Indexed: 06/10/2023]
Abstract
Fertilization is an important agricultural strategy for enhancing the efficiency of phytoremediation in copper (Cu)-contaminated soils. In this study, the effects of nitrogen (N) forms, including ammonium (NH4+-N) and nitrate (NO3--N), on the growth, translocation, and accumulation of Cu in the tissues of Ricinus communis L. were investigated in pot and hydroponic experiments. The results demonstrated that higher biomass and N contents in plants were obtained when N was supplied as NO3--N rather than NH4+-N. Application of N increased the Cu content in the roots of R. communis, with a higher content after NH4+-N (53.10-64.20 mg kg-1) than NO3--N (37.62-53.75 mg kg-1) treatment. On the contrary, the levels of Cu translocation factors were much higher in NO3--fed plants (0.34-0.45) than in NH4+-fed plants (0.28-0.38). The suggested amount of N for fertilizer application is 225 kg hm-2, which resulted in the highest Cu content in R. communis and optimal plant growth. As the main Cu-binding site, root cell walls accumulated less Cu in plants treated with NH4+-N compared with NO3--N. Additionally, NH4+-N induced a higher malondialdehyde content and more severe root damage compared with NO3--N. In the leaf, a larger number of black granules, which could be protein and starch grains involved in the detoxification of Cu in R. communis, were present after NH4+-N than NO3--N treatment. These results illustrate that N forms are especially important for Cu translocation and accumulation and that immobilization and transformation of Cu in roots were improved more by NH4+-N than NO3--N. In conclusion, N fertilizers containing the appropriate forms applied at suitable rates may enhance the biomass and Cu accumulation of R. communis and thereby the remediation efficiency of Cu-contaminated soils.
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Affiliation(s)
- Xiupei Zhou
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Guoyong Huang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ding Liang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yonghong Liu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shiyuan Yao
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Umeed Ali
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hongqing Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
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Liu M, Bi J, Liu X, Kang J, Korpelainen H, Niinemets Ü, Li C. Microstructural and physiological responses to cadmium stress under different nitrogen levels in Populus cathayana females and males. TREE PHYSIOLOGY 2020; 40:30-45. [PMID: 31748807 DOI: 10.1093/treephys/tpz115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/08/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
Although increasing attention has been paid to the relationships between heavy metal and nitrogen (N) availability, the mechanism underlying adaptation to cadmium (Cd) stress in dioecious plants has been largely overlooked. This study examined Cd accumulation, translocation and allocation among tissues and cellular compartments in Populus cathayana Rehder females and males. Both leaf Cd accumulation and root-to-shoot Cd translocation were significantly greater in females than in males under a normal N supply, but they were reduced in females and enhanced in males under N deficiency. The genes related to Cd uptake and translocation, HMA2, YSL2 and ZIP2, were strongly induced by Cd stress in female roots and in males under a normal N supply. Cadmium largely accumulated in the leaf blades of females and in the leaf veins of males under a normal N supply, while the contrary was true under N deficiency. Furthermore, Cd was mainly distributed in the leaf epidermis and spongy tissues of males, and in the leaf palisade tissues of females. Nitrogen deficiency increased Cd allocation to the spongy tissues of female leaves and to the palisade tissues of males. In roots, Cd was preferentially distributed to the epidermis and cortices in both sexes, and also to the vascular tissues of females under a normal N supply but not under N deficiency. These results suggested that males possess better Cd tolerance compared with females, even under N deficiency, which is associated with their reduced root-to-shoot Cd translocation, specific Cd distribution in organic and/or cellular compartments, and enhanced antioxidation and ion homeostasis. Our study also provides new insights into engineering woody plants for phytoremediation.
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Affiliation(s)
- Miao Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Jingwen Bi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiucheng Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Jieyu Kang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Helena Korpelainen
- Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki, PO Box 27, FI-00014, Finland
| | - Ülo Niinemets
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51006 Tartu, Estonia
- Estonian Academy of Sciences, Kohtu 6, 10130 Tallinn, Estonia
- School of Forestry and Bio-Technology, Zhejiang Agriculture & Forestry University, Hangzhou 311300, China
| | - Chunyang Li
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
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23
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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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24
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Lai Y, Wang F, Zhang Y, Li S, Wu P, Ou P, Fang Q, Chen Z, Duan Y. Implementing chemical mass balance model and vulnerability the theories to realize the comprehensive evaluation in an abandoned battery plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 686:788-796. [PMID: 31195286 DOI: 10.1016/j.scitotenv.2019.05.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/25/2019] [Accepted: 05/03/2019] [Indexed: 06/09/2023]
Abstract
In China groundwater contamination has become a serious problem. The assessment and remediation of contaminated sites are greatly important. Moreover, only few studies deal with the influence of metal speciation on human health risk assessment. This paper proposed a comprehensive assessment methodology combined human health risk assessment and groundwater vulnerability assessment for contaminated area, exploring a more reasonable model for the Cd morphology simulation, and utilizing accurate method to calculate the average daily dose by the weight analysis. PHREEQC and Visual MINTEQ were applied and compared to the morphology simulation, the modified of average daily dose and non-modified of average daily dose was investigated, carcinogenic and non-carcinogenic risks were calculated subsequently. The groundwater vulnerability was assessed by the DRASTIC model, the DRASTIC index as the indicator of groundwater vulnerability. The morphology simulation results showed 20 and 13 metal species which were simulated by PHREEQC and Visual MINTEQ, respectively. Cd2+ and CdCl+ were the primary species of Cd in groundwater. The modified average daily dose showed less than the average daily dose in results. The carcinogenic risks showed the species of Cd2+ and CdCl+ were simulated by PHREEQC which were harmful to human health. The DRASTIC index was ranged from 109 to 134 in the studied area, which showed that the area was susceptible to pollution. This method provided a more effective risk assessment model and supplied a fundamental advice for government policy-making and site remediation.
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Affiliation(s)
- Yuxian Lai
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Fei Wang
- Laboratory of Environment Remediation and Function Material, Suzhou Research Institute of North China Electric Power University, Suzhou, Jiangsu 215213, China
| | - Yimei Zhang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China; Laboratory of Environment Remediation and Function Material, Suzhou Research Institute of North China Electric Power University, Suzhou, Jiangsu 215213, China.
| | - Shuai Li
- Laboratory of Environment Remediation and Function Material, Suzhou Research Institute of North China Electric Power University, Suzhou, Jiangsu 215213, China
| | - Panpan Wu
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Ping Ou
- Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, China
| | - Qinglu Fang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhuang Chen
- Laboratory of Environment Remediation and Function Material, Suzhou Research Institute of North China Electric Power University, Suzhou, Jiangsu 215213, China
| | - Yaxiao Duan
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
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25
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Song J, Finnegan PM, Liu W, Li X, Yong JWH, Xu J, Zhang Q, Wen Y, Qin K, Guo J, Li T, Zhao C, Zhang Y. Mechanisms underlying enhanced Cd translocation and tolerance in roots of Populus euramericana in response to nitrogen fertilization. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 287:110206. [PMID: 31481203 DOI: 10.1016/j.plantsci.2019.110206] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/18/2019] [Accepted: 07/25/2019] [Indexed: 06/10/2023]
Abstract
A pot experiment was conducted to evaluate how nitrogen (N) availability influences cadmium (Cd) absorption, translocation and stress tolerance in roots of Populus euramericana. Seedling growth was sensitive to N deficiency, but it was unaltered by Cd exposure. Cadmium absorption by roots was promoted by N deficiency, resulting in a higher root Cd concentration compared to the N-sufficient condition. Fine-root length was tightly correlated (R2 = 0.73) with Cd concentration in roots, indicating that vigorous fine-root proliferation under N deficiency contributed to active absorption and accumulation of Cd in roots. Despite accumulation in roots, Cd translocation from roots to shoots was less active under N deficiency compared to N sufficiency. This was related to elevated glutathione reductase (GR) activity and glutathione (GSH) levels in roots after N application, which may not only promote antioxidant defence, but also facilitate the formation of GSH-Cd complexes that are uploaded into root cylinders. Nitrogen application also promoted antioxidant defense in roots via increased production of phytohormones and the level of enzymatic and non-enzymatic antioxidants. Transcript levels for genes responsible for antioxidant defense, Cd detoxification and Cd uploading were increased in roots by N application. The N-stimulated Cd tolerance, detoxification and uploading in roots are factors likely to promote Cd translocation from roots to shoots, which may enhance the biological capacity of this poplar species for phytoremediation of Cd pollution.
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Affiliation(s)
- Junyu Song
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Patrick M Finnegan
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA, 6009, Australia.
| | - Wenhui Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Xiang Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jean W H Yong
- Department of Biosystems and Technology, Swedish University of Agricultural Science, Alanrp, Sweden.
| | - Jiuting Xu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Yuxin Wen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Kexin Qin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Jinze Guo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Ting Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Chang Zhao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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26
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Zhang S, Yang C, Chen M, Chen J, Pan Y, Chen Y, Rahman SU, Fan J, Zhang Y. Influence of nitrogen availability on Cd accumulation and acclimation strategy of Populus leaves under Cd exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 180:439-448. [PMID: 31117015 DOI: 10.1016/j.ecoenv.2019.05.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/08/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
Nitrogen (N) plays crucial roles in chlorophyll concentration, photosynthesis, and stress tolerance of plant leaves. This study conducted a greenhouse experiment combined with Cd and N treatments to elucidate the mechanism underlying the influence of N on Cd accumulation and acclimation strategy in Populus leaves. Chlorophyll concentration and net photosynthetic rates (A) in leaves were unaltered by Cd exposure regardless of N condition. Nitrogen availability alter acclimation strategy of poplar leaves under cadmium exposure. Under sufficient N, Cd accumulation in leaves was elevated with increased intensity and duration of Cd exposure; Cd accumulation reached ca. 28 μg g-1 dry weight and 260 μg plant-1 after 60 days of exposure to high level of Cd (20 mg Cd kg-1 soil), and this finding indicates a large potential for Cd phytoextraction. Poplar leaves exhibited high capacity for antioxidant defense and stress tolerance and avoided oxidative damage under high Cd exposure. The levels of phytohormones and antioxidants in leaves and the relative expressions of critical genes encoding antioxidant enzymes were up-regulated under sufficient N condition. Nitrogen deficiency decreased chlorophyll concentration and net photosynthetic rates (A) and interfered with the production of N metabolites, resulting in a low level of phytohormones and antioxidants that are responsible for stress tolerance. The low levels of Cd accumulation in leaves may be a self-protecting strategy to prevent severe oxidative damage due to the decreased capacities for stress tolerance under N deficiency.
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Affiliation(s)
- Senmao Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Can Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Mengmeng Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Juan Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yuehan Pan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yinglong Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi, 712100, China; The UWA Institute of Agriculture, School of Agriculture and Environment, The University of Western Australia, Perth, WA, 6001, Australia
| | - Siddiq Ur Rahman
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Junfeng Fan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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27
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Chai M, Li R, Shen X, Tam NFY, Zan Q, Li R. Does ammonium nitrogen affect accumulation, subcellular distribution and chemical forms of cadmium in Kandelia obovata? ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 162:430-437. [PMID: 30015189 DOI: 10.1016/j.ecoenv.2018.07.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 07/05/2018] [Accepted: 07/08/2018] [Indexed: 06/08/2023]
Abstract
Heavy metals and nutrients are commonly found in mangrove sediments, but the effect of nutrients on heavy metals in mangrove plants is not clear. A study quantifying the effects of ammonium nitrogen (NH4+-N) on the accumulation, subcellular distribution and chemical forms of cadmium (Cd) in Kandelia obovata seedlings were conducted. The experiment consisted of four levels of NH4+-N (0, 10, 50 and 100 mg L-1) in each of which consisted of four Cd levels (0, 1, 5 and 10 mg L-1). The results showed that NH4+-N magnified the Cd toxicity due to reduced plant biomass, especially with 10 mg L-1 Cd and 100 mg L-1 NH4+-N supply. NH4+-N, especially at 100 mg L-1, enhanced the concentration and accumulation of Cd in root but its role on Cd translocation from root to stem and leaf was limited, probably due to low translocation factor. At subcellular level, Cd mainly accumulated in root cell wall but its fractionation depended on Cd levels. Under the stress of 1 and 5 mg L-1 Cd, 50 mg L-1 NH4+-N supply improved transfer of Cd from root cell wall into cell, and increased pectate and protein integrated forms of intracellular Cd to alleviate Cd toxicity. Under the stress of 10 mg L-1 Cd, NH4+-N supply promoted the deposition of Cd on root cell wall to restrain its transfer to root cell, which was verified by the reduced levels of pectate and protein integrated forms of Cd in root cell. Thus, NH4+-N supply improved immobilization of Cd in roots and alleviated Cd toxicity through integration with pectate and protein as well as cell wall combinations in root of K. obovata.
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Affiliation(s)
- Minwei Chai
- School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China.
| | - Rongyu Li
- School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China
| | - Xiaoxue Shen
- School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China
| | - Nora Fung Yee Tam
- Department of Chemistry, City University of Hon Kong, Kowloon Tong, Hong Kong, China
| | - Qijie Zan
- School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China; Department of Chemistry, City University of Hon Kong, Kowloon Tong, Hong Kong, China; Guangdong Neilingding Futian National Nature Reserve, Shenzhen 518000, China
| | - Ruili Li
- School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, Guangdong, China
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