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Yao Q, Yang Y, Chen J, Li X, He M, Long D, Zeng J, Wu D, Sha L, Fan X, Kang H, Zhang H, Zhou Y, Wang Y, Cheng Y. Soil application of FeCl 3 and Fe 2(SO 4) 3 reduced grain cadmium concentration in Polish wheat (Triticum polonicum L.). BMC PLANT BIOLOGY 2024; 24:930. [PMID: 39370516 DOI: 10.1186/s12870-024-05652-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2024] [Accepted: 09/30/2024] [Indexed: 10/08/2024]
Abstract
BACKGROUND Wheat is one of major sources of human cadmium (Cd) intake. Reducing the grain Cd concentrations in wheat is urgently required to ensure food security and human health. In this study, we performed a field experiment at Wenjiang experimental field of Sichuan Agricultural University (Chengdu, China) to reveal the effects of FeCl3 and Fe2(SO4)3 on reducing grain Cd concentrations in dwarf Polish wheat (Triticum polonicum L., 2n = 4x = 28, AABB). RESULTS Soil application of FeCl3 and Fe2(SO4)3 (0.04 M Fe3+/m2) significantly reduced grain Cd concentration in DPW at maturity by 19.04% and 33.33%, respectively. They did not reduce Cd uptake or root-to-shoot Cd translocation, but increased Cd distribution in lower leaves, lower internodes, and glumes. Meanwhile, application of FeCl3 and Fe2(SO4)3 up-regulated the expression of TpNRAMP5, TpNRAMP2 and TpYSL15 in roots, and TpYSL15 and TpZIP3 in shoots; they also downregulated the expression of TpZIP1 and TpZIP3 in roots, and TpIRT1 and TpNRAMP5 in shoots. CONCLUSIONS The reduction in grain Cd concentration caused by application of FeCl3 and Fe2(SO4)3 was resulted from changes in shoot Cd distribution via regulating the expression of some metal transporter genes. Overall, this study reports the physiological pathways of soil applied Fe fertilizer on grain Cd concentration in wheat, suggests a strategy for reducing grain Cd concentration by altering shoot Cd distribution.
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Affiliation(s)
- Qin Yao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
- Chengdu Agricultural College, Wenjiang, 611130, Sichuan, China
| | - Yueying Yang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Jia Chen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Xiaoying Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Miao He
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Dan Long
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Dandan Wu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Lina Sha
- College of Grassland Science and Technology, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Xing Fan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Houyang Kang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Haiqin Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Yonghong Zhou
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China
| | - Yi Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China.
| | - Yiran Cheng
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China/ Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, 611130, Sichuan, China.
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Jiao Q, Li G, Li L, Lin D, Xu Z, Fan L, Zhang J, Shen F, Liu S, Seth CS, Liu H. Hormetic responses to cadmium exposure in wheat seedlings: insights into morphological, physiological, and biochemical adaptations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34915-1. [PMID: 39292310 DOI: 10.1007/s11356-024-34915-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 08/31/2024] [Indexed: 09/19/2024]
Abstract
Cadmium is commonly recognized as toxic to plant growth, low-level Cd has promoting effects on growth performance, which is so-called hormesis. Although Cd toxicity in wheat has been widely investigated, knowledge of growth response to a broad range of Cd concentrations, especially extremely low concentrations, is still unknown. In this study, the morphological, physiological, and biochemical performance of wheat seedlings to a wide range of Cd concentrations (0-100 µΜ) were explored. Low Cd treatment (0.1-0.5 µM) improved wheat biomass and root development by enhancing the photosynthetic system and antioxidant system ability. Photosynthetic rate (Pn) was improved by 5.72% under lower Cd treatment (1 µΜ), but inhibited by 6.05-49.85% from 5 to 100 µΜ. Excessive Cd accumulation induced oxidative injury manifesting higher MDA content, resulting in lower photosynthetic efficiency, stunted growth, and reduction of biomass. Further, the contents of ascorbate, glutathione, non-protein thiols, and phytochelatins were improved under 5-100 µΜ Cd treatment. The ascorbate peroxidase activity in the leaf showed a hormetic dose-response characteristic. Correlation analysis and partial least squares (PLS) results indicated that antioxidant enzymes and metabolites were closely correlated with Cd tolerance and accumulation. The results of the element network, correlation analysis, and PLS showed a crucial role for exogenous Cd levels in K, Fe, Cu, and Mn uptake and accumulation. These results provided a deeper understanding of the hormetic effect of Cd in wheat, which would be beneficial for improving the quality of hazard and risk assessments.
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Affiliation(s)
- Qiujuan Jiao
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Gezi Li
- National Engineering Research Center for Wheat, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Lantao Li
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Di Lin
- College of Forestry, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Zhengyang Xu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Lina Fan
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Jingjing Zhang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Fengmin Shen
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China
| | - Shiliang Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China
| | | | - Haitao Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, PR China.
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3
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Ge Y, Jia P, Tian S, Lu L. Cadmium distribution in rice: Understanding the role of plant nodes and growth stages. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 362:124919. [PMID: 39251124 DOI: 10.1016/j.envpol.2024.124919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 08/18/2024] [Accepted: 09/06/2024] [Indexed: 09/11/2024]
Abstract
Cadmium (Cd) contamination in farmland poses a significant threat to food security in staple crops, especially rice. Using a mix of hydroponic and soil culture methods, stable isotope tracers, and advanced analytical techniques, this study elucidated the mechanisms of Cd uptake, translocation, and accumulation in rice throughout different growth stages. Despite a notable linear correlation between soil DTPA (diethylene-triaminepentaacetic acid)-Cd and the total Cd concentration of rice, our findings showed that the influence of soil Cd level on the proportion of Cd in grain was negligible. The study highlighted the dynamic response of Cd distribution within plant nodes to changes in DTPA-extractable Cd. Heading stage (HS) and mature stage (MS) were critical for Cd uptake and upward transport in rice, and the contribution of Cd absorption in brown rice was 28.61% and 40.16%, respectively. Moreover, the distribution of Cd in nodes showed how important nodes are for controlling and redistributing Cd in rice. In the HS, the lower node had a function in re-transporting, whereas in the MS, there was a considerable redistribution of Cd in the upper node. These insights can help us understand rice Cd dynamics and develop agronomic techniques and rice cultivars that minimize Cd accumulation.
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Affiliation(s)
- Yining Ge
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Peihan Jia
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shengke Tian
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Agricultural Resource and Environment of Zhejiang Province, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lingli Lu
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Agricultural Resource and Environment of Zhejiang Province, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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4
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Wang Y, Gao PP, Shang YM, Jia RR, Wang YC, Li XY, Geng LP, Zhao Y, Walrath J, Liu WJ. Trade-offs of reproductive growth and Cd remobilization regulated Cd accumulation in wheat grains (Triticum aestivum L.). JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135166. [PMID: 38991635 DOI: 10.1016/j.jhazmat.2024.135166] [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: 04/09/2024] [Revised: 06/29/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
Minimization of cadmium (Cd) accumulation in wheat grain (Triticum aestivum L.) is an important way to prevent Cd hazards to humans. However, little is known about the mechanisms of varietal variation of Cd accumulation in wheat grain. This study explores the physiological mechanisms of Cd bioaccumulation through field and hydroponic experiments on two wheat varieties of low-Cd-accumulating variety (L-6331) and high-Cd-accumulating variety (H-6049). Field study showed that average Cd accumulative rates in spikes of H-6049 were 1.57-fold of L-6331 after flowering, ultimately grain-Cd of H-6049 was 1.70-fold of L-6331 in Cd-contaminated farmland. The hydroponic experiment further confirmed that more vegetative tissues of L-6331 were involved in the remobilization of Cd, which jointly mitigated the process of Cd loaded to grains when leaf-cutting conducted after Cd stress. Additionally, the L1 and N1 of L-6331 play an especially important role in regulating Cd remobilization, and the larger EVB areas in N1 have the morphological feature that facilitates the transfer of Cd to L1. Overall results implied that low-Cd-accumulating variety initiated more trade-offs of reproductive growth and Cd remobilizatoin under Cd-stress after flowering compared with high-Cd-accumulating variety, and provided new insights into the processes of Cd loaded into wheat grains among different varieties.
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Affiliation(s)
- Ying Wang
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Pei-Pei Gao
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Yu-Meng Shang
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Rong-Rong Jia
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Yu-Cheng Wang
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Xiang-Yu Li
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Li-Ping Geng
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Yong Zhao
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Crop Germplasm Resources of Hebei Province, Hebei Agricultural University, Baoding 071001, China
| | - Joshua Walrath
- College of Foreign Languages, Hebei Agricultural University, Baoding 071000, Hebei, China
| | - Wen-Ju Liu
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000, Hebei, China; Key Laboratory for Farmland Eco-environment of Hebei Province, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071000, Hebei, China.
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Zhao Q, Liu H, Wu L, Christie P, Wang X, Rasool G, Peng G. Metal(loid) uptake and physiological response of Coix lacryma-jobi L. to soil potentially toxic elements in a polluted metal-mining area. Sci Rep 2024; 14:18833. [PMID: 39138343 PMCID: PMC11322300 DOI: 10.1038/s41598-024-69652-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024] Open
Abstract
Coix lacryma-jobi L. is a traditional medicinal plant in east Asia and is an important crop in Guizhou province, southwest China, where there are elevated levels of soil mercury and arsenic (As). Exposure to multiple potentially toxic elements (PTEs) may affect plant accumulation of metal(loid)s and food safety in regions with high geological metal concentrations. Field experiments were conducted to study the effects of PTEs on metal(loid) accumulation and physiological response of C. lacryma in different plant parts at three pollution levels. Total root length, number of root tips, number of branches, and number of root crosses increased with increasing pollution level, with increases in highly polluted areas of 44.2, 57.0, 79.6, and 97.2%, respectively, compared to lightly polluted areas. Under multi-element stress the activity of C. lacryma antioxidant oxidase showed an increase at low and medium PTE concentrations and inhibition at high concentrations. The As contents were all below the maximum limit of cereal food contaminants in China (GB 2762-2022, As < 0.5 mg kg-1). The stems had high Tl bioconcentration factors but the translocation factors from stem to grain were very low, indicating that the stems may be a key plant part restricting Tl transport to the grains. C. lacryma increased root retention and reduced the transport effect, thus reducing metal accumulation in the grains. C. lacryma adapted to PTE stress through root remodeling and enhanced antioxidant enzyme activities.
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Affiliation(s)
- Qun Zhao
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Hongyan Liu
- College of Agriculture, Guizhou University, Guiyang, 550025, China.
- Key Laboratory of Karst Geological Resources and Environment of Ministry of Education, Guizhou University, Guiyang, 550025, China.
| | - Longhua Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China
| | - Peter Christie
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China
| | - Xuewen Wang
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Ghulam Rasool
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Guilan Peng
- College of Agriculture, Guizhou University, Guiyang, 550025, China
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6
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Chen K, Xue W, Di X, Sun T, Gao W, Sun Y. Effects of nitrogen forms on Cd uptake and tolerance in wheat seedlings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 936:173451. [PMID: 38782266 DOI: 10.1016/j.scitotenv.2024.173451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/25/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024]
Abstract
Hydroponic experiment was conducted to explore the effects of two nitrogen (N) levels with five nitrate nitrogen (NO3--N) and ammonium nitrogen (NH4+-N) ratios on the growth status and Cd migration patterns of wheat seedlings under Cd5 and Cd30 level. Results showed that higher Cd were detrimental to the growth, absorption of K and Ca, expression of genes mediating NO3--N and NH4+-N transport, which also increased the content of malondialdehyde (MDA) and hydrogen peroxide (H2O2) in shoots and roots of wheat seedlings. Higher N treatment alleviated the inhibitory effects of Cd stress on the biomass, root development, photosynthesis and increased the tolerance index of wheat seedlings. The ratio of NO3--N and NH4+-N was the main factor driving Cd accumulation in wheat seedlings, the combined application of NH4+-N and NO3--N was more conducive for the growth, nitrogen assimilation and Cd tolerance to the Cd stressed wheat seedlings. Increased NO3--N application rates significantly up-regulated the expression levels of TaNPF2.12, TaNRT2.2, increased NH4+-N application rates significantly up-regulated the expression levels of TaAMT1.1. The high proportion of NO3--N promoted the absorption of K, Ca and Cd in the shoots and roots of wheat seedlings, while NH4+-N was the opposite. Under low Cd conditions, the NO3--N to NH4+-N ratio of 1:1 was more conducive to the growth of wheat seedlings, under high Cd stress, the optimal of NO3--N to NH4+-N was 1:2 for inhibiting the accumulation of Cd in wheat seedlings. The results indicated that increasing NH4+-N ratio appropriately could inhibit wheat Cd uptake by increasing NH4+, K+ and Ca2+ for K and Ca channels, and promote wheat growth by promoting N assimilation process.
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Affiliation(s)
- Kexin Chen
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, P.R. China, Tianjin 300191, China
| | - Weijie Xue
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, P.R. China, Tianjin 300191, China.
| | - Xuerong Di
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, P.R. China, Tianjin 300191, China
| | - Tao Sun
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, P.R. China, Tianjin 300191, China
| | - Wei Gao
- College of Resources and Environment, Henan Agricultural University, No.218 Ping'an Avenue, Zhengzhou 450046, Henan, China; Henan Key Lab of Soil Pollution Control & Remediation, Henan Agricultural University, No.218 Ping'an Avenue, Zhengzhou 450046, Henan, China.
| | - Yuebing Sun
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, P.R. China, Tianjin 300191, China.
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Ma S, Mao S, Shi J, Zou J, Zhang J, Liu Y, Wang X, Ma Z, Yu C. Exploring the synergistic interplay of sulfur metabolism and electron transfer in Cr(VI) and Cd(II) removal by Clostridium thiosulfatireducens: Genomic and mechanistic insights. CHEMOSPHERE 2024; 352:141289. [PMID: 38281604 DOI: 10.1016/j.chemosphere.2024.141289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 12/13/2023] [Accepted: 01/22/2024] [Indexed: 01/30/2024]
Abstract
In this study, a sulfate-reducing bacterium, Clostridium thiosulfatireducens (CT) was reported and the performance and removal mechanism of Cr(VI) and Cd(II) removal were investigated. It is noteworthy that the dsrAB gene is absent in this strain, but the strain is capable of producing sulfide. The conversion rate of Cr(VI) by CT was 84.24 % at a concentration of 25 mg/L, and the conversion rate of Cd(II) was 94.19 % at a concentration of 28 mg/L. The complete genome is 6,106,624 bp and the genome consisted of a single chromosome. The GC content of the chromosomes was 29.65 %. The mechanism of heavy metal removal by CT bacteria mainly includes biosorption, electron transfer and redox, with reduction combined with S2- precipitation as the main pathway. The product characterization results showed that the formation of mainly ionic crystals and precipitates (CdS, Cd(OH)2, Cr(OH)3, Cr2O3) after adsorption. Genome-wide techniques have shown that the clearance of Cr(VI) and Cd(II) by CT is largely dependent on sulfate transport, sulfur metabolism, and energy metabolism to some extent. In addition, genes related to ATP binding, electron carrier activity, transporter protein genes, and DNA repair are also important factors to improve the heavy metal resistance and transformation ability of CT strains. Both the Fe-S cycle and the ROS-resistant system can enhance the electron transfer activity and thus slow down the damage of heavy metals to microorganisms. This study fills the gap in the understanding of the basic properties and heavy metal transformation mechanism of CT.
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Affiliation(s)
- Suya Ma
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Shuaixian Mao
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Jinshuai Shi
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Jiacheng Zou
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Jiale Zhang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Yingchao Liu
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Xinrong Wang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Zizhen Ma
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Caihong Yu
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China.
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Lan Y, Burca G, Yong JWH, Johansson E, Kuktaite R. New Insights into the Bio-Chemical Changes in Wheat Induced by Cd and Drought: What Can We Learn on Cd Stress Using Neutron Imaging? PLANTS (BASEL, SWITZERLAND) 2024; 13:554. [PMID: 38498534 PMCID: PMC10892926 DOI: 10.3390/plants13040554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/08/2024] [Accepted: 02/16/2024] [Indexed: 03/20/2024]
Abstract
Cadmium (Cd) and drought stresses are becoming dominant in a changing climate. This study explored the impact of Cd and Cd + drought stress on durum wheat grown in soil and sand at two Cd levels. The physiological parameters were studied using classical methods, while the root architecture was explored using non-invasive neutron computed tomography (NCT) for the first time. Under Cd + drought, all the gas exchange parameters were significantly affected, especially at 120 mg/kg Cd + drought. Elevated Cd was found in the sand-grown roots. We innovatively show the Cd stress impact on the wheat root volume and architecture, and the water distribution in the "root-growing media" was successfully visualized using NCT. Diverse and varying root architectures were observed for soil and sand under the Cd stress compared to the non-stress conditions, as revealed using NCT. The intrinsic structure of the growing medium was responsible for a variation in the water distribution pattern. This study demonstrated a pilot approach to use NCT for quantitative and in situ mapping of Cd stress on wheat roots and visualized the water dynamics in the rhizosphere. The physiological and NCT data provide valuable information to relate further to genetic information for the identification of Cd-resilient wheat varieties in the changing climate.
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Affiliation(s)
- Yuzhou Lan
- Department of Plant Breeding, The Swedish University of Agricultural Sciences, P.O. Box 190, SE-23422 Lomma, Sweden; (Y.L.); (E.J.)
| | - Genoveva Burca
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK;
- ISIS Pulsed Neutron and Muon Source, Harwell Science and Innovation Campus, Didcot OX11 0QX, UK
- Faculty of Science and Engineering, The University of Manchester, Alan Turing Building, Oxford Road, Manchester M13 9PL, UK
| | - Jean Wan Hong Yong
- Department of Biosystems and Technology, The Swedish University of Agricultural Sciences, P.O. Box 190, SE-23422 Lomma, Sweden;
| | - Eva Johansson
- Department of Plant Breeding, The Swedish University of Agricultural Sciences, P.O. Box 190, SE-23422 Lomma, Sweden; (Y.L.); (E.J.)
| | - Ramune Kuktaite
- Department of Plant Breeding, The Swedish University of Agricultural Sciences, P.O. Box 190, SE-23422 Lomma, Sweden; (Y.L.); (E.J.)
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Di X, Qin X, Wei Y, Liang X, Wang L, Xu Y, Yuebing S, Huang Q. Selenate reduced wheat grain cadmium accumulation by inhibiting cadmium absorption and increasing root cadmium retention. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 204:108108. [PMID: 37864926 DOI: 10.1016/j.plaphy.2023.108108] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/10/2023] [Accepted: 10/16/2023] [Indexed: 10/23/2023]
Abstract
Selenium (Se) fertilizer has been recently used to reduce cadmium (Cd) accumulation in plant. A pot culture was performed to analyze Cd uptake, translocation, and distribution in wheat plants during the reproductive growth period in a Cd-contaminated soil after selenate was applied to the soil, and a hydroponic culture was carried out to investigate the effects of selenate application on Cd2+ influx, subcellular Cd distribution, and Cd accumulation in wheat seedlings. Results showed that selenate application had no significant effect on DTPA-Cd and Cd fraction in soil. The application of selenate greatly inhibited the whole-plant Cd absorption by 14%-23%. In addition, selenate prompted the retention of Cd in root by increasing the Cd distribution in the vacuole, which reduced the root-to-shoot Cd translocation by 18%-53%. The application of selenate increased the Cd concentration in nodes, inhibited Cd remobilization from nutritive organs to grain, and ultimately reduced Cd accumulation in wheat grain. Further, heading to grain filling was the key growth stage for exogenous selenate to regulate grain Cd accumulation. In summary, soil selenate application is an effective method to reduce grain Cd concentration in wheat, which provided scientific basis for remediation of Cd-contaminated soil.
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Affiliation(s)
- Xuerong Di
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Xu Qin
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Yihua Wei
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
| | - Xuefeng Liang
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Lin Wang
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Yingming Xu
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Sun Yuebing
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China.
| | - Qingqing Huang
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China.
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10
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Yan BF, Cheng-Feng H, Zhao M, Qiu RL, Tang YT. Characterizing the remobilization flux of cadmium from pre-anthesis vegetative pools in rice during grain filling using an improved stable isotope labeling method. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 331:121891. [PMID: 37236585 DOI: 10.1016/j.envpol.2023.121891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/04/2023] [Accepted: 05/22/2023] [Indexed: 05/28/2023]
Abstract
A clear understanding of the allocation of Cd to grains is essential to manage the level of Cd in cereal diets effectively. Yet, debate remains over whether and how the pre-anthesis pools contribute to grain Cd accumulation, resulting in uncertainty regarding the need to control plant Cd uptake during vegetative growth. To this end, rice seedlings were exposed to 111Cd labeled solution until tillering, transplanted to unlabeled soils, and grown under open-air conditions. The remobilization of Cd derived from pre-anthesis vegetative pools was studied through the fluxes of 111Cd-enriched label among organs during grain filling. The 111Cd label was continuously allocated to the grain after anthesis. The lower leaves remobilized the Cd label during the earlier stage of grain development, which was allocated almost equally to the grains and husks + rachis. During the final stage, the Cd label was strongly remobilized from the roots and, less importantly, the internodes, which was strongly allocated to the nodes and, to a less extent, the grains. The results show that the pre-anthesis vegetative pools are an important source of Cd in rice grains. The lower leaves, internodes, and roots are the source organs, whereas the husks + rachis and nodes are the sinks competing with the grain for the remobilized Cd. This study provides insight into understanding the ecophysiological mechanism of Cd remobilization and setting agronomic measures for lowering grain Cd levels.
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Affiliation(s)
- Bo-Fang Yan
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Hu Cheng-Feng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Man Zhao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
| | - Rong-Liang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Ye-Tao Tang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation, Sun Yat-sen University, Guangzhou, 510275, China.
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11
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Liu P, Li L, Ippolito JA, Xing W, Wang Y, Wang Y, Cheng Y, Qiu K. Heavy metal distribution in wheat plant components following foliar Cd application. CHEMOSPHERE 2023; 322:138177. [PMID: 36806811 DOI: 10.1016/j.chemosphere.2023.138177] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/16/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Atmospheric deposition of Cd, from anthropogenic activities, can be directly deposited onto and absorbed into wheat plants, yet, how foliar absorbed Cd is translocated in wheat plants is not well understood. A pot experiment investigated foliar Cd application on the accumulation and distribution of heavy metals in various wheat parts. Wheat was grown in a Cd/heavy metal contaminated soil, and from grain heading to the filling stage, 0, 10, 20, 30 and 40 mg kg-1 Cd solution was sprayed repeatedly on leaves (grain heads were covered). Foliar Cd application had no effect on grain yield and Cd concentration (3.01-3.51 mg kg-1 for all treatments), while increased flag leaf blade and sheath Cd concentrations by 1.06-2.77 and 0.00-0.66 times, respectively. Cadmium concentration in the center of the peduncle, from the 40 mg kg-1 Cd solution treatment, was 1.41 times that of the control (10.3 vs 7.30 mg kg-1). Foliar Cd application also increased Cd accumulation (concentration × mass) of the flag leaf blade and sheath. Rachis and grain Pb concentrations were reduced, while stem Pb concentration was increased by Cd application. Cadmium application negatively affected whole plant Ni accumulation and concentration of certain wheat parts; Ni absorption inhibition may have occurred in roots via the downward transport of Cd. Overall results implied that the predominant portion of foliar applied Cd was retained in leaves, while lesser portions migrated to peduncle or root and affected the absorption/distribution of other metals in wheat plants. These results are important for further discerning the mechanism of wheat grain Cd accumulation, especially when grain is raised in areas where atmospheric deposition of Cd (e.g., near smelting facilities) is an issue from an environmental and human health perspective.
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Affiliation(s)
- Pengkun Liu
- School of the Environment, Henan University of Technology, Zhengzhou, Henan, 450001, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, Henan, 450001, China
| | - Liping Li
- School of the Environment, Henan University of Technology, Zhengzhou, Henan, 450001, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, Henan, 450001, China.
| | - James A Ippolito
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, 80523-1170, USA; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, Henan, 450001, China
| | - Weiqin Xing
- School of the Environment, Henan University of Technology, Zhengzhou, Henan, 450001, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, Henan, 450001, China
| | - Yali Wang
- School of the Environment, Henan University of Technology, Zhengzhou, Henan, 450001, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, Henan, 450001, China
| | - Yale Wang
- School of the Environment, Henan University of Technology, Zhengzhou, Henan, 450001, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, Henan, 450001, China
| | - Yongxia Cheng
- Jiyuan Ecological and Environmental Monitoring Center of Henan Province, Jiyuan, Henan, 459000, China
| | - Kunyan Qiu
- Jiyuan Ecological and Environmental Monitoring Center of Henan Province, Jiyuan, Henan, 459000, China
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12
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Su Y, Huang X, Li L, Muhammad ZA, Li M, Zheng T, Guo Z, Zhang Y, Luo D, Ye X, Jia X, Hussain Panhwar F, Tun MT, Zhu J. Comparative Responses of Silicon to Reduce Cadmium and Enrich Selenium in Rice Varieties. Foods 2023; 12:foods12081656. [PMID: 37107451 PMCID: PMC10138079 DOI: 10.3390/foods12081656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Cadmium (Cd), a highly toxic heavy metal for crops in China, poses a significant threat to rice cultivation. It is crucial to identify the genotypes with robust resistance to heavy metals, including Cd, in rice. The experiment was conducted to examine the mitigation effect of silicon (Si) on Cd toxicity levels in Se-enriched Z3055B and non-Se-enriched G46B rice genotypes. A basal dose of Si improved the growth and the quality of rice significantly by reducing the Cd content in rice roots, stems, leaves and grains and increased the yield, biomass and selenium (Se) content of brown rice in both genotypes. Additionally, Se content in brown rice and polished rice was notably higher in Se-enriched rice than in non-Se-enriched rice, with the highest amount at 0.129 mg/kg and 0.085 mg/kg, respectively. The results demonstrated that a basal fertilizer concentration of 30 mg/kg of Si was more effective in reducing Cd transport from roots to shoots in Se-enriched rice than in non-Se-enriched rice genotypes. Therefore, it can be concluded that Se-enriched rice genotypes are a viable option for food crop production in Cd-contaminated areas.
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Affiliation(s)
- Yang Su
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Xin Huang
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Ling Li
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Zahir Ahsan Muhammad
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Meilin Li
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Tengda Zheng
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Zhe Guo
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Yue Zhang
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Dan Luo
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Xiaoying Ye
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Xiaomei Jia
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Faiz Hussain Panhwar
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Myo Thuzar Tun
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Jianqing Zhu
- Rice Research Institute, Sichuan Agricultural University, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
- Demonstration Base for International Science & Technology Cooperation of Sichuan Province, 211, Huimin Road, Wenjiang District, Chengdu 611130, China
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13
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Ma C, Xie P, Yang J, Lin L, Zhang K, Zhang H. Evaluating the contributions of leaf organ to wheat grain cadmium at the filling stage. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155217. [PMID: 35429556 DOI: 10.1016/j.scitotenv.2022.155217] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/07/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Cadmium (Cd) is an element of global concern in agricultural fields owing to its high bioavailability and its risk to human health via the consumption of wheat products. However, whether wheat leaves can directly absorb atmospheric Cd and transport them to the grains along with the contribution of leaves to Cd accumulation in the grains is not clear. We evaluated this mechanism through three comparative treatments: 1) exposure to atmospheric deposition (CK), 2) no exposure to atmospheric deposition (T1), and 3) exposure to atmospheric deposition with leaf cutting (T2). The Cd accumulation rate of grains in the CK, T1, and T2 groups all showed an increasing trend, followed by a decreasing trend, which was consistent with the trend of filling rate. Moreover, the critical period for leaf Cd accumulation in the grains was the early filling period, and its contribution decreased gradually as filling progressed. The contribution of the leaves to grain Cd reached 31.73% at maturity, with the reactivation of stored Cd in leaves pre-flowering and the newly absorbed atmospheric Cd by leaves post-flowering contributing 19.76% and 11.97% to Cd accumulation in grains, respectively, at maturity. Sub-microstructure analysis of the leaves further confirmed that the direct Cd absorption by leaves from atmospheric deposition through stomata contributed to Cd accumulation in wheat grains. Therefore, controlling the sources of atmospheric Cd pollution and reducing Cd absorption by leaves during grain filling can effectively control Cd pollution of wheat grains. This study provides significant insights on how to more effectively control the Cd content of edible part of wheat and ensure food security.
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Affiliation(s)
- Chuang Ma
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou 45000, China
| | - Pan Xie
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou 45000, China
| | - Jun Yang
- Institute of Geographical Sciences and Natural Resource Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - Lin Lin
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou 45000, China
| | - Ke Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou 45000, China
| | - Hongzhong Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou 45000, China
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14
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Li S, Huang X, Liu N, Chen Y, He H, Cao X, Dai J. Selection of low-cadmium and high-micronutrient wheat cultivars and exploration of the relationship between agronomic traits and grain cadmium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:42884-42898. [PMID: 35092584 DOI: 10.1007/s11356-022-18763-5] [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: 07/09/2021] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
The cadmium (Cd) and micronutrient contents in grains were used as screening indicators through a pot experiment, and the hierarchical cluster analysis was used to select wheat cultivars with low Cd and high micronutrient contents. The potential human health risks caused by wheat intake and the relationship between the Cd concentration in wheat grains and 12 agronomic traits were also investigated using the risk assessment model and logistic equation fitting, respectively. Yannong-23, Zhongmmai-175, and Luyuan-502, the main wheat cultivars promoted in the Huang-Huai-Hai region of China, were screened for low Cd accumulation and high micronutrient. Health risk assessment results demonstrated that children showed a high noncarcinogenic risk and that adults posed a high carcinogenic risk. The results of the agronomic trait analysis showed that low-Cd accumulation wheat cultivars had high spikelet number and fresh and dry weights of root, stem, and leaf (p < 0.05). Logistic curve fitting results showed that among all agronomic traits, the root dry weight was the most suitable factor with remarkable goodness of fit and showed a significant negative correlation. The Cd concentration in wheat grains could be predicted by the logistic curve equation obtained by fitting this trait. Results provided theoretical support for the safe use of slightly to moderately contaminated farmland, formulation of health risk management policies for different populations, and breeding of high-quality wheat.
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Affiliation(s)
- Shuangshuang Li
- Environment Research Institute, Shandong University, Binhai Road 72, Qingdao, 266237, Shandong, China
| | - Xianmin Huang
- Shandong General Station of Agricultural Environmental Protection and Rural Energy, Jinan, 250100, China
| | - Na Liu
- College of Resource and Environment, Shanxi Agricultural University, Taigu, 030801, China
| | - Yihui Chen
- Environment Research Institute, Shandong University, Binhai Road 72, Qingdao, 266237, Shandong, China
| | - Huan He
- Environment Research Institute, Shandong University, Binhai Road 72, Qingdao, 266237, Shandong, China
| | - Xiaoyu Cao
- Environment Research Institute, Shandong University, Binhai Road 72, Qingdao, 266237, Shandong, China
| | - Jiulan Dai
- Environment Research Institute, Shandong University, Binhai Road 72, Qingdao, 266237, Shandong, China.
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15
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Yang Y, Xia S, Li J, Zhong K, Wang J, Shi L, Chen Y. Screening of Foliar Barrier Agents and Reduces the Absorption and Transport of Cd in Wheat. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 108:372-378. [PMID: 34515821 DOI: 10.1007/s00128-021-03370-w] [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: 03/20/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Different foliar barrier agents (FBA) were used by foliar spraying in first season field and pot experiments to compare their effects on Cadmium (Cd) reduction in wheat grains. The best two FBA (50 µM SNP and 2 mM Na2EDTA) can significantly reduce Cd concentration in wheat grains, and the filling period was the most effective period for FBA application. Compared with the control (H2O), foliar spraying 50 µM SNP or 2 mM Na2EDTA inhibited the moving of Cd from the lower tissue to upper tissue in stem and also significantly reduced the Cd accumulation in grains. Furthermore, compared with normal wheat variety (AK58), foliar spraying 50 µmol SNP or 2 mM Na2EDTA as the best two FBA significantly reduced Cd concentration in shoots of Cd low accumulation varieties (HZB and HJBY), which can be used for the safe production of wheat in Cd-contaminated farmlands.
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Affiliation(s)
- Yang Yang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Shenglan Xia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jianmin Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Kecheng Zhong
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jie Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Liang Shi
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
- National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation,, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
- National Joint Local Engineering Research Center for Rural Land Resources Use and Consolidation,, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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16
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Bracher C, Frossard E, Bigalke M, Imseng M, Mayer J, Wiggenhauser M. Tracing the fate of phosphorus fertilizer derived cadmium in soil-fertilizer-wheat systems using enriched stable isotope labeling. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117314. [PMID: 34004476 DOI: 10.1016/j.envpol.2021.117314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
Applying mineral phosphorus (P) fertilizers introduces a considerable input of the toxic heavy metal cadmium (Cd) into arable soils. This study investigates the fate of P fertilizer derived Cd (Cddff) in soil-wheat systems using a novel combination of enriched stable Cd isotope mass balances, sequential extractions, and Bayesian isotope mixing models. We applied an enriched 111Cd labeled mineral P fertilizer to arable soils from two long-term field trials with distinct soil properties (a strongly acidic pH and a neutral pH) and distinct past mineral P fertilizer application rates. We then cultivated wheat in a pot trial on these two soils. In the neutral soil, Cd concentrations in the soil and the wheat increased with increasing past mineral P fertilizer application rates. This was not the case in the strongly acidic soil. Less than 2.3% of freshly applied Cddff was taken up by the whole wheat plant. Most of the Cddff remained in the soil and was predominantly (>95% of freshly applied Cddff) partitioned into the easily mobilizable acetic acid soluble fraction (F1) and the potentially mobile reducible fraction (F2). Soil pH was the determining factor for the partitioning of Cddff into F1, as revealed through a recovery of about 40% of freshly applied Cddff in F1 in the neutral pH soil compared with about 60% in the strongly acidic soil. Isotope mixing models showed that F1 was the predominant source of Cd for wheat on both soils and that it contributed to over 80% of the Cd that was taken up by wheat. By tracing the fate of Cddff in entire soil-plant systems using different isotope source tracing approaches, we show that the majority of Cddff remains mobilizable and is potentially plant available in the subsequent crop cycle.
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Affiliation(s)
- Christoph Bracher
- Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland
| | - Emmanuel Frossard
- Institute of Agricultural Sciences, ETH Zurich, Eschikon 33, 8315 Lindau, Switzerland
| | - Moritz Bigalke
- Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland
| | - Martin Imseng
- Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland
| | - Jochen Mayer
- Agroscope, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | - Matthias Wiggenhauser
- Institute of Agricultural Sciences, ETH Zurich, Eschikon 33, 8315 Lindau, Switzerland.
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17
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Cheng Y, Yang T, Xiang W, Li S, Fan X, Sha L, Kang H, Wu D, Zhang H, Zeng J, Zhou Y, Wang Y. Ammonium-nitrogen addition at the seedling stage does not reduce grain cadmium concentration in two common wheat (Triticum aestivum L.) cultivars. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 286:117575. [PMID: 34130116 DOI: 10.1016/j.envpol.2021.117575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/26/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
High cadmium (Cd) concentration in common wheat (Triticum aestivum L.) grains poses potential health risks. Several management strategies have been used to reduce grain Cd concentration. However, limited information is available on the use of ammonium-nitrogen (NH4+-N) as a strategy to manage Cd concentration in wheat grains. In this study, NH4+-N addition at the seedling stage unchanged the grain Cd concentration in the high-Cd accumulator, Zhoumai 18 (ZM18), but dramatically increased that in the low-Cd accumulator, Yunmai 51 (YM51). Further analysis revealed that the effects of NH4+-N addition on whole-plant Cd absorption, root-to-shoot Cd translocation, and shoot-to-grain Cd remobilization were different between the two wheat cultivars. In ZM18, NH4+-N addition did not change whole-plant Cd absorption, but inhibited root-to-shoot Cd translocation and Cd remobilization from lower internodes, lower leaves, node 1, and internode 1 to grains via the down-regulation of yellow stripe-like transporters (YSL), zinc transporters (ZIP5, ZIP7, and ZIP10), and heavy-metal transporting ATPases (HMA2). This inhibition decreased the grain Cd content by 29.62%, which was consistent with the decrease of the grain dry weight by 23.26%, leading to unchanged grain Cd concentration in ZM18. However, in YM51, NH4+-N addition promoted continuous Cd absorption during grain filling, root-to-shoot Cd translocation and whole-plant Cd absorption. The absorbed Cd was directly transported to internode 1 via the xylem and then re-transported to grains via the phloem by up-regulated YSL, ZIP5, and copper transporters (COPT4). This promotion increased the grain Cd content by 245.35%, which was higher than the increased grain dry weight by 132.89%, leading to increased grain Cd concentration in YM51. Our findings concluded that the addition of NH4+-N fertilizer at the seedling stage is not suitable for reducing grain Cd concentration in common wheat cultivars.
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Affiliation(s)
- Yiran Cheng
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Tian Yang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Wenhui Xiang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Siyu Li
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Xing Fan
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Lina Sha
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Houyang Kang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Dandan Wu
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Haiqin Zhang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Jian Zeng
- College of Resources, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Yonghong Zhou
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China
| | - Yi Wang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.
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18
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Tibbett M, Green I, Rate A, De Oliveira VH, Whitaker J. The transfer of trace metals in the soil-plant-arthropod system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 779:146260. [PMID: 33744587 DOI: 10.1016/j.scitotenv.2021.146260] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/26/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Essential and non-essential trace metals are capable of causing toxicity to organisms above a threshold concentration. Extensive research has assessed the behaviour of trace metals in biological and ecological systems, but has typically focused on single organisms within a trophic level and not on multi-trophic transfer through terrestrial food chains. This reinforces the notion of metal toxicity as a closed system, failing to consider one trophic level as a pollution source to another; therefore, obscuring the full extent of ecosystem effects. Given the relatively few studies on trophic transfer of metals, this review has taken a compartment-based approach, where transfer of metals through trophic pathways is considered as a series of linked compartments (soil-plant-arthropod herbivore-arthropod predator). In particular, we consider the mechanisms by which trace metals are taken up by organisms, the forms and transformations that can occur within the organism and the consequences for trace metal availability to the next trophic level. The review focuses on four of the most prevalent metal cations in soil which are labile in terrestrial food chains: Cd, Cu, Zn and Ni. Current knowledge of the processes and mechanisms by which these metals are transformed and moved within and between trophic levels in the soil-plant-arthropod system are evaluated. We demonstrate that the key factors controlling the transfer of trace metals through the soil-plant-arthropod system are the form and location in which the metal occurs in the lower trophic level and the physiological mechanisms of each organism in regulating uptake, transformation, detoxification and transfer. The magnitude of transfer varies considerably depending on the trace metal concerned, as does its toxicity, and we conclude that biomagnification is not a general property of plant-arthropod and arthropod-arthropod systems. To deliver a more holistic assessment of ecosystem toxicity, integrated studies across ecosystem compartments are needed to identify critical pathways that can result in secondary toxicity across terrestrial food-chains.
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Affiliation(s)
- Mark Tibbett
- Department of Sustainable Land Management & Soil Research Centre, School of Agriculture Policy and Development, University of Reading, Whiteknights, RG6 6AR, UK.
| | - Iain Green
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, Dorset BH12 5BB, UK
| | - Andrew Rate
- School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia
| | - Vinícius H De Oliveira
- Department of Plant Biology, Institute of Biology, University of Campinas, Campinas, Sao Paulo 13083-970, Brazil
| | - Jeanette Whitaker
- UK Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Lancaster LA1 4AP, UK
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Wiggenhauser M, Aucour AM, Telouk P, Blommaert H, Sarret G. Changes of Cadmium Storage Forms and Isotope Ratios in Rice During Grain Filling. FRONTIERS IN PLANT SCIENCE 2021; 12:645150. [PMID: 33995443 PMCID: PMC8116553 DOI: 10.3389/fpls.2021.645150] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/08/2021] [Indexed: 05/10/2023]
Abstract
Rice poses a major source of the toxic contaminant cadmium (Cd) for humans. Here, we elucidated the role of Cd storage forms (i.e., the chemical Cd speciation) on the dynamics of Cd within rice. In a pot trial, we grew rice on a Cd-contaminated soil in upland conditions and sampled roots and shoots parts at flowering and maturity. Cd concentrations, isotope ratios, Cd speciation (X-ray absorption spectroscopy), and micronutrient concentrations were analyzed. During grain filling, Cd and preferentially light Cd isotopes were strongly retained in roots where the Cd storage form did not change (Cd bound to thiols, Cd-S = 100%). In the same period, no net change of Cd mass occurred in roots and shoots, and the shoots became enriched in heavy isotopes (Δ114/110Cd maturity-flowering = 0.14 ± 0.04‰). These results are consistent with a sequestration of Cd in root vacuoles that includes strong binding of Cd to thiol containing ligands that favor light isotopes, with a small fraction of Cd strongly enriched in heavy isotopes being transferred to shoots during grain filling. The Cd speciation in the shoots changed from predominantly Cd-S (72%) to Cd bound to O ligands (Cd-O, 80%) during grain filling. Cd-O may represent Cd binding to organic acids in vacuoles and/or binding to cell walls in the apoplast. Despite this change of ligands, which was attributed to plant senescence, Cd was largely immobile in the shoots since only 0.77% of Cd in the shoots were transferred into the grains. Thus, both storage forms (Cd-S and Cd-O) contributed to the retention of Cd in the straw. Cd was mainly bound to S in nodes I and grains (Cd-S > 84%), and these organs were strongly enriched in heavy isotopes compared to straw (Δ114/110Cd grains/nodes- straw = 0.66-0.72‰) and flag leaves (Δ114/110Cd grains/nodes-flag leaves = 0.49-0.52‰). Hence, xylem to phloem transfer in the node favors heavy isotopes, and the Cd-S form may persist during the transfer of Cd from node to grain. This study highlights the importance of Cd storage forms during its journey to grain and potentially into the food chain.
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Affiliation(s)
- Matthias Wiggenhauser
- Institute of Agricultural Sciences, Department of Environmental Systems Science, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland
- ISTerre, Université Grenoble Alpes, Université Savoie Mont Blanc, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux, Grenoble, France
| | - Anne-Marie Aucour
- Laboratoire de Geologie de Lyon, Ecole Normale Supérieure de Lyon, Université Lyon 1, Université de Lyon, Centre National de la Recherche Scientifique, Lyon, France
| | - Philippe Telouk
- Laboratoire de Geologie de Lyon, Ecole Normale Supérieure de Lyon, Université Lyon 1, Université de Lyon, Centre National de la Recherche Scientifique, Lyon, France
| | - Hester Blommaert
- ISTerre, Université Grenoble Alpes, Université Savoie Mont Blanc, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux, Grenoble, France
| | - Géraldine Sarret
- ISTerre, Université Grenoble Alpes, Université Savoie Mont Blanc, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux, Grenoble, France
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Pompa C, D’Amore T, Miedico O, Preite C, Chiaravalle AE. Evaluation and Dietary Exposure Assessment of Selected Toxic Trace Elements in Durum Wheat ( Triticum durum) Imported into the Italian Market: Six Years of Official Controls. Foods 2021; 10:775. [PMID: 33916622 PMCID: PMC8066597 DOI: 10.3390/foods10040775] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 11/16/2022] Open
Abstract
Durum wheat grains, which are mostly used for the production of pasta and several baked goods, represent a main source of vegetable proteins and calories. Concurrently, many contaminants, including toxic trace elements, may accumulate in them, posing a potential severe hazard to human health. In this context, for official control and food safety purposes, 346 samples of whole durum wheat imported into the Italian market from six countries (Australia, Canada, Kazakhstan, Russia, Turkey, and the United States) during the period 2015-2020 were analysed for cadmium (Cd), lead (Pb), and mercury (Hg) content using inductively coupled plasma mass spectrometry (ICP-MS). All the analysed samples were compliant with Food Agriculture Organization-World Health Organization and European Union regulations. The mean values were 0.0322 and 0.0162 mg kg-1, respectively, for Cd and Pb, while all samples showed levels below the limit of detection (0.004 mg kg-1) for Hg. The results were construed in terms of seasonality, year, and country of production, and compared with reference tolerance values. Confirming previous exposure studies, the obtained data and the dietary intake assessment showed that durum wheat-based products may have a significant impact on exposure to Pb and Cd (20-50%) in the overall population, particularly in more sensitive and/or exposed subgroups (infants, toddlers, and females).
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Affiliation(s)
| | - Teresa D’Amore
- Department of Chemistry, Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, Italy; (C.P.); (O.M.); (C.P.); (A.E.C.)
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21
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Bai Z, Li D, Zhu L, Tang X, Wang Y, Mao R, Wu J. Nitrate Increases Cadmium Accumulation in Sweet Sorghum for Improving Phytoextraction Efficiency Rather Than Ammonium. FRONTIERS IN PLANT SCIENCE 2021; 12:643116. [PMID: 34093607 PMCID: PMC8172601 DOI: 10.3389/fpls.2021.643116] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/26/2021] [Indexed: 05/05/2023]
Abstract
Sweet sorghum has potential for phytoextraction of cadmium (Cd) owning to its large biomass and relatively high Cd tolerance. Nitrogen affects both growth and Cd concentrations in plants. However, different forms of nitrogen effects on Cd accumulation in sweet sorghum to improve efficiency of Cd phytoremediation is still elusive. In this study, nitrate substantially promoted both dry weight and Cd concentrations in leaves, stems + sheaths and roots of sweet sorghum when compared with ammonium. As a result, Cd accumulation in nitrate-supplied sweet sorghum was around 3.7-fold of that in ammonium-supplied plants under unbuffered pH condition, while the fold was about 2.2 under buffered pH condition. We speculated pH values and Cd species in the growth medium to some extent contributed to increased Cd accumulation as affected by nitrate. Net photosynthesis rate and Fv/Fm of nitrate-treated plants under Cd stress were higher than that of ammonium-treated plants when the pH was unbuffered. Responses of antioxidant capacity in roots to Cd stress with nitrate application were stronger than that with ammonium supplementation. Taken together, nitrate is more suitable than ammonium for Cd phytoextraction by using sweet sorghum, which is able to enhance at least double efficiency of phytoextraction.
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Affiliation(s)
- Zhenqing Bai
- Shaanxi Key Laboratory of Chinese Jujube, Yan’an University, Yan’an, China
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Dan Li
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Lin Zhu
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Xiaoyu Tang
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Yanfeng Wang
- Shaanxi Key Laboratory of Chinese Jujube, Yan’an University, Yan’an, China
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Renjun Mao
- Shaanxi Key Laboratory of Chinese Jujube, Yan’an University, Yan’an, China
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Jiawen Wu
- Shaanxi Key Laboratory of Chinese Jujube, Yan’an University, Yan’an, China
- College of Life Sciences, Yan’an University, Yan’an, China
- *Correspondence: Jiawen Wu, ; orcid.org/0000-0001-8646-126X
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Cornu JY, Bussière S, Coriou C, Robert T, Maucourt M, Deborde C, Moing A, Nguyen C. Changes in plant growth, Cd partitioning and xylem sap composition in two sunflower cultivars exposed to low Cd concentrations in hydroponics. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111145. [PMID: 32846296 DOI: 10.1016/j.ecoenv.2020.111145] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 05/22/2023]
Abstract
This study characterizes sunflower response to the levels of Cd encountered in moderately Cd-polluted soils. Two sunflower cultivars differing in their ability to sequestrate Cd in roots were exposed to low concentrations of Cd (0.5 nM or 100 nM) in hydroponics and sampled after 18 days (258 degree-days) when ten leaves were fully expanded. Plant growth, Cd uptake and partitioning among organs were monitored along with the ionomic (ICP-MS) and the metabolic (1H-NMR) composition of the xylem sap. Sunflower tolerance to Cd differed between the two cultivars. The cultivar with the highest ability to sequestrate Cd in roots (Kapllan) was more tolerant to Cd than the one with the lowest ability (ES RICA). The 23% penalization of plant growth observed at 100 nM in cultivar ES RICA was associated with reduced xylem loading fluxes of soluble sugars, perhaps pointing to disruption of carbohydrate metabolism. Retention of Cd in the stem was higher at 100 nM than at 0.5 nM in the Cd-sensitive cultivar ES RICA, which can be seen as a sunflower strategy to restrict the amount of Cd delivered to the leaves under Cd stress. No direct connection was found between the speciation of Cd in the xylem sap and the Cd translocation efficiency, although significant changes in the free ionic fraction of Cd were observed between the two cultivars at 0.5 nM. The relevance of these results in promoting the use of sunflower in phytomanagement of Cd-polluted soils is discussed.
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Affiliation(s)
- J Y Cornu
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France.
| | - S Bussière
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
| | - C Coriou
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
| | - T Robert
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
| | - M Maucourt
- INRAE, Univ. Bordeaux, UMR Fruit Biology and Pathology, F-33140, Villenave D'Ornon, France; PMB-Metabolome, INRAE, 2018. Bordeaux Metabolome Facility, France
| | - C Deborde
- INRAE, Univ. Bordeaux, UMR Fruit Biology and Pathology, F-33140, Villenave D'Ornon, France; PMB-Metabolome, INRAE, 2018. Bordeaux Metabolome Facility, France
| | - A Moing
- INRAE, Univ. Bordeaux, UMR Fruit Biology and Pathology, F-33140, Villenave D'Ornon, France; PMB-Metabolome, INRAE, 2018. Bordeaux Metabolome Facility, France
| | - C Nguyen
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
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An M, Wei C, Wang K, Fan H, Wang X. Study on the effects of polymer modifiers and phloem girdling on cotton in cadmium-contaminated soil in Xinjiang Province, China. Sci Rep 2020; 10:6356. [PMID: 32286469 PMCID: PMC7156520 DOI: 10.1038/s41598-020-63421-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 03/30/2020] [Indexed: 11/18/2022] Open
Abstract
The effects of two liquid modifiers (polyacrylate compound modifier and organic polymer compound modifier) and phloem girdling (stem girdling and branch girdling) on cadmium (Cd) content, Cd transport, and photosynthetic parameters of cotton (Xinluzao 60) in Cd-contaminated soil (40 mg kg -1) were studied through barrel experiment. The results showed that the distribution ratios of Cd in stem, leaves, and bolls, leaf net photosynthetic rate (Pn), leaf stomatal conductance (Gs), leaf transpiration rate (Tr), and chlorophyll content were decreased after girdling; and the application of modifiers reduced the Cd content and the Cd transported to the shoot, while alleviating photosynthetic damage caused by girdling. In general, our results indicated that the inhibition of carbohydrate supply caused by girdling reduced the photosynthetic capacity of cotton, while the applications of the two liquid modifiers decrease the influence to cotton photosynthesis. Moreover, Cd and modifiers may be transported to the shoot through both phloem and xylem.
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Affiliation(s)
- MengJie An
- Agriculture College, Shihezi University, Shihezi, Xinjiang, 832003, China
| | - Changzhou Wei
- Agriculture College, Shihezi University, Shihezi, Xinjiang, 832003, China
| | - Kaiyong Wang
- Agriculture College, Shihezi University, Shihezi, Xinjiang, 832003, China.
| | - Hua Fan
- Agriculture College, Shihezi University, Shihezi, Xinjiang, 832003, China
| | - Xiaoli Wang
- Agriculture College, Shihezi University, Shihezi, Xinjiang, 832003, China
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Sohail MI, Zia Ur Rehman M, Rizwan M, Yousaf B, Ali S, Anwar Ul Haq M, Anayat A, Waris AA. Efficiency of various silicon rich amendments on growth and cadmium accumulation in field grown cereals and health risk assessment. CHEMOSPHERE 2020; 244:125481. [PMID: 31812047 DOI: 10.1016/j.chemosphere.2019.125481] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/23/2019] [Accepted: 11/25/2019] [Indexed: 05/08/2023]
Abstract
Cadmium (Cd) contamination of arable soils and its subsequent accumulation in food is one of the global issues which needs urgent attention. Field experiments were conducted to explore the impacts of ten silicon (Si) rich amendments on Cd bioavailability and accumulation by maize and wheat irrigated with sewage effluents. Results depicted that applied amendments decreased the total Cd accumulation in shoots and grains of both crops with and the maximum decrease was observed in rice husk biochar (RHB) treatment. The RHB was able to significantly decrease the translocation factor, Cd harvest and health risk indexes. All amendments differentially affected the soil pH, EC, CaCl2-extractable Si, and decreased the AB-DTPA-extractable soil Cd. Overall, suitable Si rich amendments (like RHB and CSB etc.) can be employed to mitigate the health risks associated with dietary Cd in untreated sewage irrigated fields. However, the cost-benefit analysis such Si rich amendments should be considered before final recommendations.
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Affiliation(s)
- Muhammad Irfan Sohail
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Muhammad Zia Ur Rehman
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Pakistan.
| | - Balal Yousaf
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, PR China
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University Faisalabad, Pakistan; Department of Biological Sciences and Technology, China Medical University (CMU), Taiwan.
| | - Muhammad Anwar Ul Haq
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Alia Anayat
- Soil & Water Testing Lab. Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Aisha A Waris
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38040, Pakistan
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