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Chen W, Zhang P, Liu D, Wang X, Lu S, Liu Z, Yang M, Deng T, Chen L, Qi H, Xiao S, Chen Q, Qiu R, Xie L. OsPLDα1 mediates cadmium stress response in rice by regulating reactive oxygen species accumulation and lipid remodeling. JOURNAL OF HAZARDOUS MATERIALS 2024; 479:135702. [PMID: 39217932 DOI: 10.1016/j.jhazmat.2024.135702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 08/19/2024] [Accepted: 08/28/2024] [Indexed: 09/04/2024]
Abstract
Lipid remodeling is crucial for various cellular activities and the stress tolerance of plants; however, little is known about the lipid dynamics induced by the heavy metal cadmium (Cd). In this study, we investigated the phospholipid profiles in rice (Oryza sativa) under Cd exposure. We observed a significant decline in the total amounts of phosphatidylcholine and phosphatidylserine, contrasted with an elevation in phosphatidic acid (PA) due to Cd stress. Additionally, Cd stress prompted the activation of phospholipase D (PLD) and induced the expression of PLDα1. OsPLDα1 knockout mutants (Ospldα1) showed increased sensitivity to Cd, characterized by a heightened accumulation of hydrogen peroxide in roots and diminished PA production following Cd treatment. Conversely, PLDα1-overexpressing (OsPLDα1-OE) lines demonstrated enhanced tolerance to Cd, with suppressed transcription of the respiratory burst oxidase homolog (Rboh) genes. The transcription levels of genes associated with Cd uptake and transport were accordingly modulated in Ospldα1 and OsPLDα1-OE plants relative to the wild-type. Taken together, our findings underscore the pivotal role of OsPLDα1 in conferring tolerance to Cd by modulating reactive oxygen species homeostasis and lipid remodeling in rice.
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Affiliation(s)
- Wenzhen Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, 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
| | - Peixian Zhang
- Guangdong Laboratory for Lingnan Modern Agriculture, 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
| | - Di Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiaozhuo Wang
- Guangdong Laboratory for Lingnan Modern Agriculture, 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
| | - Sen Lu
- Guangdong Laboratory for Lingnan Modern Agriculture, 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
| | - Zhixuan Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Mingkang Yang
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Tenghaobo Deng
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of Quality & Safety Risk Assessment for Agro-products, Guangzhou 510640, China
| | - Liang Chen
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Hua Qi
- Guangdong Laboratory for Lingnan Modern Agriculture, 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
| | - Shi Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Qinfang Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Rongliang Qiu
- Guangdong Laboratory for Lingnan Modern Agriculture, 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.
| | - Lijuan Xie
- Guangdong Laboratory for Lingnan Modern Agriculture, 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.
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Gatasheh MK, Shah AA, Noreen Z, Usman S, Shaffique S. FeONPs alleviate cadmium toxicity in Solanum melongena through improved morpho-anatomical and physiological attributes, along with oxidative stress and antioxidant defense regulations. BMC PLANT BIOLOGY 2024; 24:742. [PMID: 39095745 PMCID: PMC11297600 DOI: 10.1186/s12870-024-05464-z] [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: 05/28/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024]
Abstract
In this study, various constraints of Cd toxicity on growth, morpho-anatomical characters along with physiological and biochemical metabolic processes of Solanum melongena L. plants were analyzed. Conversely, ameliorative role of iron oxide nanoparticles (FeONPs) was examined against Cd stress. For this purpose, the following treatments were applied in completely randomized fashion; 3 mM CdCl2 solution applied with irrigation water, 40 and 80 ppm solutions of FeONPs applied via foliar spray. Regarding the results, Cd caused oxidative damage to plants' photosynthetic machinery, resulting in elevated levels of stress-markers like malondialdehyde (MDA), hydrogen peroxide (H2O2), and electrolytic leakage (EL) along with slight increase in antioxidants activities, including glutathione (GsH), ascorbate (AsA), catalases (CAT), peroxidases (POD), superoxide dismutase (SOD), and ascorbate peroxidases (APX). Also, high Cd level in plants disturb ions homeostasis and reduced essential minerals uptake, including Ca and K. This ultimately reduced growth and development of S. melongena plants. In contrast, FeONPs supplementations improved antioxidants (enzymatic and non-enzymatic) defenses which in turn limited ROS generation and lowered the oxidative damage to photosynthetic machinery. Furthermore, it maintained ionic balance resulting in enhanced uptake of Ca and K nutrients which are necessary for photosynthesis, hence also improved photosynthesis rate of S. melongena plants. Overall, FeONPs foliar spray effectively mitigated Cd toxicity imposed on S. melongena plants.
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Affiliation(s)
- Mansour K Gatasheh
- Department of Biochemistry, College of Science, King Saud University, P.O.Box 2455, Riyadh, 11451, Saudi Arabia
| | - Anis Ali Shah
- Department of Botany, Division of Science and Technology, University of Education, Lahore, Pakistan.
| | - Zahra Noreen
- Department of Botany, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Sheeraz Usman
- Department of Botany, Division of Science and Technology, University of Education, Lahore, Pakistan.
| | - Shifa Shaffique
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-ro, Buk-Gu, 41566, Daegu, South Korea
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Jia H, Wei Y, An H, Wang Q, Yang J, Li C. Copper oxide nanoparticles alter the uptake and distribution of cadmium through disturbing the ordered structure of the cell wall in Arabidopsis root. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108430. [PMID: 38364632 DOI: 10.1016/j.plaphy.2024.108430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/18/2024]
Abstract
Copper oxide nanoparticles (CuO NPs) influence the uptake of heavy metal ions by plants, but molecular mechanism is still unknown. Here, we proved the mechanism of CuO NPs affecting Cd absorption in Arabidopsis root. 4-d-old seedlings were treated by 10 and 20 mg/L CuO NPs for 3 d, which decreased the contents of cellulose and hemicellulose in roots. Moreover, the contents of some important monosaccharides were altered by CuO NPs, including arabinose, glucose and mannose. Biosynthesis of cellulose and hemicellulose is regulated by cellulose synthase A complexe (CSC) dynamics. The synthesis of tubulin cytoskeleton was inhibited by CuO NPs, which resulted in the decrease of CSCs bidirectional velocities. Furthermore, the arrangement and network of cellulose fibrillar bundles were disrupted by CuO NPs. CuO NPs treatment significantly increased the influx of Cd2+. The accumulation and translocation of Cd were increased by 10 and 20 mg/L CuO NPs treatment. The subcellular distribution of Cd in root cells indicated CuO NPs decrease the enrichment of Cd in cell wall, but increase the enrichment of Cd in soluble fraction and organelle. In light of these findings, we proposed a mechanistic model in which CuO NPs destroy the ordered structure of the cell wall, alter the uptake and distribution of Cd in Arabidopsis.
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Affiliation(s)
- Honglei Jia
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, PR China.
| | - Yuting Wei
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, PR China
| | - Haodong An
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, PR China
| | - Qing Wang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, PR China
| | - Jun Yang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, PR China
| | - Chengtao Li
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, PR China.
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Liu J, Feng X, Qiu G, Li H, Wang Y, Chen X, Fu Q, Guo B. Inhibition Roles of Calcium in Cadmium Uptake and Translocation in Rice: A Review. Int J Mol Sci 2023; 24:11587. [PMID: 37511349 PMCID: PMC10380254 DOI: 10.3390/ijms241411587] [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: 06/27/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 07/30/2023] Open
Abstract
Cadmium (Cd) contamination in rice grains is posing a significant threat to global food security. To restrict the transport of Cd in the soil-rice system, an efficient way is to use the ionomics strategy. Since calcium (Ca) and Cd have similar ionic radii, their uptake and translocation may be linked in multiple aspects in rice. However, the underlying antagonistic mechanisms are still not fully understood. Therefore, we first summarized the current knowledge on the physiological and molecular footprints of Cd translocation in plants and then explored the potential antagonistic points between Ca and Cd in rice, including exchange adsorption on roots, plant cell-wall composition, co-transporter gene expression, and transpiration inhibition. This review provides suggestions for Ca/Cd interaction studies on rice and introduces ionomics research as a means of better controlling the accumulation of Cd in plants.
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Affiliation(s)
- Junli Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Xiaoyu Feng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Gaoyang Qiu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hua Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Yuan Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Xiaodong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Qinglin Fu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Bin Guo
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
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Tyagi S, Sharma Y, Sharma A, Pandey A, Singh K, Upadhyay SK. Expression of TaNCL2-A ameliorates cadmium toxicity by increasing calcium and enzymatic antioxidants activities in arabidopsis. CHEMOSPHERE 2023; 329:138636. [PMID: 37040835 DOI: 10.1016/j.chemosphere.2023.138636] [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: 12/26/2022] [Revised: 04/01/2023] [Accepted: 04/05/2023] [Indexed: 05/03/2023]
Abstract
Cadmium (Cd) is a heavy metal that occurs naturally in the environment and is toxic to both animals and plants. The impact of Cd toxicity is shown to be reduced by the exogenous application of calcium (Ca) in crop plants. The sodium/calcium exchanger-like (NCL) protein is involved in Ca enrichment in the cytoplasm by transporting it from the vacuole in the exchange of cytosolic sodium (Na). However, it has not been utilized to ameliorate the Cd toxicity, to date. An elevated expression of TaNCL2-A gene in the root and shoot tissues of bread wheat seedlings, and a higher growth rate of recombinant yeast cells, suggested its role in Cd stress response. The TaNCL2-A expressing transgenic Arabidopsis lines exhibited significant Cd tolerance with increased Ca (∼10-fold) accumulation. The proline content and antioxidant enzymes activities were increased while oxidative stress-related molecules such as H2O2 and MDA were reduced in the transgenic lines. In addition, the growth and yield parameters of transgenic lines such as seed germination rate, root length, leaf biomass, leaf area index, rosette diameter, leaf length and width, and silique count, along with various physiological indicators like chlorophyll, carotenoid, and relative water contents were also improved in comparison to the control plants. Further, the transgenic lines exhibited significant salinity and osmotic stress tolerance, as well. Taken together, these results suggested that the TaNCL2-A could mitigate Cd toxicity along with salinity and osmotic stress. This gene may also be utilized for phytoremediation and Cd sequestration in future studies.
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Affiliation(s)
- Shivi Tyagi
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Yashraaj Sharma
- Department of Botany, Panjab University, Chandigarh, 160014, India; Department of Biotechnology, Panjab University, Chandigarh, 160014, India
| | - Alok Sharma
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Ashutosh Pandey
- National Institute of Plant Genome Research, New Delhi, India
| | - Kashmir Singh
- Department of Biotechnology, Panjab University, Chandigarh, 160014, India
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Zhang X, Xue W, Zhang C, Wang C, Huang Y, Wang Y, Peng L, Liu Z. Cadmium pollution leads to selectivity loss of glutamate receptor channels for permeation of Ca 2+/Mn 2+/Fe 2+/Zn 2+ over Cd 2+ in rice plant. JOURNAL OF HAZARDOUS MATERIALS 2023; 452:131342. [PMID: 37023578 DOI: 10.1016/j.jhazmat.2023.131342] [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: 01/16/2023] [Revised: 03/27/2023] [Accepted: 03/31/2023] [Indexed: 05/03/2023]
Abstract
The selective permeation of glutamate receptor channels (GLRs) for essential and toxic elements in plant cells is poorly understood. The present study found that the ratios between cadmium (Cd) and 7 essential elements (i.e., K, Mg, Ca, Mn, Fe, Zn and Cu) in grains and vegetative organs increased significantly with the increase of soil Cd levels. Accumulation of Cd resulted in the significant increase of Ca, Mn, Fe and Zn content and the expression levels of Ca channel genes (OsCNGC1,2 and OsOSCA1.1,2.4), while remarkable reduction of glutamate content and expression levels of GLR3.1-3.4 in rice. When planted in the same Cd-polluted soil, mutant fc8 displayed significantly higher content of Ca, Fe, Zn and expression levels of GLR3.1-3.4 than its wild type NPB. On the contrary, the ratios between Cd and essential elements in fc8 were significantly lower than that in NPB. These results indicate that Cd pollution may damage the structural integrity of GLRs by inhibiting glutamate synthesis and expression levels of GLR3.1-3.4, which leads to the increase of ion influx but the decrease of preferential selectivity for Ca2+/ Mn2+/ Fe2+/ Zn2+ over Cd2+ through GLRs in rice cells.
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Affiliation(s)
- Xin Zhang
- 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
| | - Changbo Zhang
- 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
| | - Changrong Wang
- 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
| | - Yongchun Huang
- 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
| | - Yanting Wang
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zhongqi Liu
- 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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Zhou J, Moore RET, Rehkämper M, Kreissig K, Coles B, Sun Y, Li Z, Luo Y, Christie P, Wu L. Zinc Supply Affects Cadmium Uptake and Translocation in the Hyperaccumulator Sedum Plumbizincicola as Evidenced by Isotope Fractionation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:5891-5902. [PMID: 36988089 DOI: 10.1021/acs.est.2c08220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
This study employs stable isotope analysis to investigate the mechanisms of cadmium (Cd) and zinc (Zn) interaction in the metal hyperaccumulating plant species Sedum plumbizincicola. To this end, the Cd and Zn isotope compositions of root, stem, leaf, and xylem sap samples were determined during metal uptake and translocation at different Cd and Zn concentrations. The enrichment of light isotopes of both elements in plants during uptake was less pronounced at low metal supply levels, likely reflecting the switch from a low-affinity to a high-affinity transport system at lower levels of external metal supply. The lower δ114/110Cd values of xylem sap when treated with a metabolic inhibitor decreasing the active Cd uptake further supports the preference of heavier Cd isotopes during high-affinity transport. The Δ66Znplant-initial solution or Δ66Znplant-final solution values were similar at different Cd concentrations, indicating negligible interaction of Cd in the Zn uptake process. However, decreasing Zn supply levels significantly increased the enrichment of light Cd isotopes in plants (Δ114/110Cd = -0.08‰) in low-Cd treatments but reduced the enrichment of light Cd isotopes in plants (Δ114/110Cd = 0.08‰) under high Cd conditions. A systematic enrichment of heavy Cd and light Zn isotopes was found in root-to-shoot translocation of the metals. The Cd concentrations of the growth solutions thereby had no significant impact on Zn isotope fractionation during root-to-shoot translocation. However, the Δ114/110Cdtranslocation values hint at possible competition between Cd and Zn for transporters during root-to-shoot transfer and this may impact the transport pathway of Cd. The stable isotope data demonstrate that the interactions between the two metals influenced the uptake and transport mechanisms of Cd in S. plumbizincicola but had little effect on those of Zn.
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Affiliation(s)
- Jiawen Zhou
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Rebekah E T Moore
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Mark Rehkämper
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Katharina Kreissig
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Barry Coles
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Yufang Sun
- Soil & Environment Analysis Center, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhu Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yongming Luo
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Peter Christie
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Longhua Wu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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8
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Zhang Y, Wang Z, Liu Y, Zhang T, Liu J, You Z, Huang P, Zhang Z, Wang C. Plasma membrane-associated calcium signaling modulates cadmium transport. THE NEW PHYTOLOGIST 2023; 238:313-331. [PMID: 36567524 DOI: 10.1111/nph.18698] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Cadmium (Cd) is a toxic heavy element for plant growth and development, and plants have evolved many strategies to cope with Cd stress. However, the mechanisms how plants sense Cd stress and regulate the function of transporters remain very rudimentary. Here, we found that Cd stress induces obvious Ca2+ signals in Arabidopsis roots. Furthermore, we identified the calcium-dependent protein kinases CPK21 and CPK23 that interacted with the Cd transporter NRAMP6 through a variety of protein interaction techniques. Then, we confirmed that the cpk21 23 double mutants significantly enhanced the sensitive phenotype of cpk23 single mutant under Cd stress, while the overexpression and continuous activation of CPK21 and CPK23 enhanced plants tolerance to Cd stress. Multiple biochemical and physiological analyses in yeast and plants demonstrated that CPK21/23 phosphorylate NRAMP6 primarily at Ser489 and Thr505 to inhibit the Cd transport activity of NRAMP6, thereby improving the Cd tolerance of plants. Taken together, we found a plasma membrane-associated calcium signaling that modulates Cd tolerance. These results provide new insights into the molecular breeding of crop tolerance to Cd stress.
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Affiliation(s)
- Yanting Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhangqing Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yisong Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Tianqi Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jiaming Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhang You
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Panpan Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhenqian Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Cun Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi, 712100, China
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9
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Zhang J, Zhang M, Zhang J, Wang F, Wang Y, Zheng L. Overexpression of RtSYP121 confers cadmium colerance by promoting vesicle trafficking, maintaining ion homeostasis, and alleviating photosynthetic inhibition in Arabidopsis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114620. [PMID: 36773437 DOI: 10.1016/j.ecoenv.2023.114620] [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: 05/22/2022] [Revised: 10/22/2022] [Accepted: 02/05/2023] [Indexed: 06/18/2023]
Abstract
Cadmium (Cd) is a toxic heavy metal in soil that seriously threatens crop production, food security, and human health. Syntaxins, a prototype family of Soluble N-ethyl-maleimide-associated protein receptors (SNAREs) involved in vesicle trafficking, are implicated in resistance to abiotic stresses, including Cd stress, but the molecular mechanisms underlying the involvement of syntaxins in Cd tolerance in plants are unclear. In this study, we isolated and functionally characterized the syntaxin gene RtSYP121 from Reaumuria trigyna to evaluate its potential for phytoremediation. RtSYP121 resides in the plasma membrane. The transcriptional level of RtSYP121 was strongly increased by salt, drought, and Cd stress. Overexpression of RtSYP121 significantly enhanced the Cd tolerance of transgenic Arabidopsis. The Cd tolerance of transgenic plants mainly depended on elevated vesicle trafficking, which increased the content of K+ and Ca2+ and thus decreased the accumulation of Cd2+ by regulating the delivery or activity of ion transporters, channels, and pumps. Moreover, overexpression of RtSYP121 in Arabidopsis ameliorated Cd stress-induced phytotoxic effects, including growth inhibition, ROS burst, photosynthetic impairment, and cell death. Therefore, we suggest that RtSYP121 plays multiple roles in the plant response to Cd stress by promoting vesicle trafficking, maintaining ion homeostasis, and alleviating photosynthetic inhibition.
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Affiliation(s)
- Jiayuan Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Miao Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Jian Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Fang Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Yingchun Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Linlin Zheng
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
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The Early Oxidative Stress Induced by Mercury and Cadmium Is Modulated by Ethylene in Medicago sativa Seedlings. Antioxidants (Basel) 2023; 12:antiox12030551. [PMID: 36978799 PMCID: PMC10045221 DOI: 10.3390/antiox12030551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023] Open
Abstract
Cadmium (Cd) and mercury (Hg) are ubiquitous soil pollutants that promote the accumulation of reactive oxygen species, causing oxidative stress. Tolerance depends on signalling processes that activate different defence barriers, such as accumulation of small heat sock proteins (sHSPs), activation of antioxidant enzymes, and the synthesis of phytochelatins (PCs) from the fundamental antioxidant peptide glutathione (GSH), which is probably modulated by ethylene. We studied the early responses of alfalfa seedlings after short exposure (3, 6, and 24 h) to moderate to severe concentration of Cd and Hg (ranging from 3 to 30 μM), to characterize in detail several oxidative stress parameters and biothiol (i.e., GSH and PCs) accumulation, in combination with the ethylene signalling blocker 1-methylcyclopropene (1-MCP). Most changes occurred in roots of alfalfa, with strong induction of cellular oxidative stress, H2O2 generation, and a quick accumulation of sHSPs 17.6 and 17.7. Mercury caused the specific inhibition of glutathione reductase activity, while both metals led to the accumulation of PCs. These responses were attenuated in seedlings incubated with 1-MCP. Interestingly, 1-MCP also decreased the amount of PCs and homophytochelatins generated under metal stress, implying that the overall early response to metals was controlled at least partially by ethylene.
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11
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Farhangi-Abriz S, Ghassemi-Golezani K. The modified biochars influence nutrient and osmotic statuses and hormonal signaling of mint plants under fluoride and cadmium toxicities. FRONTIERS IN PLANT SCIENCE 2022; 13:1064409. [PMID: 36578343 PMCID: PMC9791105 DOI: 10.3389/fpls.2022.1064409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
INTRODUCTION Chemically modified biochars are a new generation of biochars that have a great ability to absorb and stabilize environmental pollutants. In this research, the physiological performance of mint plants (Mentha crispa L.) under fluoride and cadmium toxicities and biochar treatments was evaluated. METHODS Four levels of soil toxicities including non-toxic, 600 mg NaF kg-1 soil, 60 mg Cd kg-1 soil, and 600 mg NaF kg-1 soil + 60 mg Cd kg-1 soil were applied. The biochar addition to the soil was 25 g kg-1 (non-biochar, solid biochar, H2O2, KOH, and H3PO4-modified biochars). RESULTS The results showed that the application of biochar and especially chemically modified biochars reduced fluoride (about 15-37%) and cadmium (30-52%) contents in mint leaves, while increased soil pH and cation exchange capacity (CEC), nitrogen (12-35%), phosphorus (16-59%), potassium (17-52%), calcium (19-47%), magnesium (28-77%), iron (37-114%), zinc (45-226%), photosynthetic pigments of leaves and plant biomass (about 10-25%) under toxic conditions. DISCUSSION The biochar-related treatments reduced the osmotic stress and osmolytes content (proline, soluble proteins, and carbohydrates) in plant leaves. Plant leaf water content was increased by solid and modified biochar, up to 8% in toxic conditions. Furthermore, these treatments reduced the production of stress hormones [abscisic acid (27-55%), salicylic acid (31-50%), and jasmonic acid (6-12%)], but increased indole-3-acetic acid (14-31%) in plants under fluoride and cadmium stresses. Chemically modified biochars reduced fluoride and cadmium contents of plant leaves by about 20% and 22%, respectively, compared to solid biochar. CONCLUSION This result clearly shows the superiority of modified biochars in protecting plants from soil pollutants.
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12
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Liu A, Wang W, Chen X, Zheng X, Fu W, Wang G, Ji J, Guan C. Phytoremediation of DEHP and heavy metals co-contaminated soil by rice assisted with a PGPR consortium: Insights into the regulation of ion homeostasis, improvement of photosynthesis and enrichment of beneficial bacteria in rhizosphere soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120303. [PMID: 36181940 DOI: 10.1016/j.envpol.2022.120303] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/20/2022] [Accepted: 09/25/2022] [Indexed: 06/16/2023]
Abstract
The coexistence of di (2-ethylhexyl) phthalate (DEHP), Cd, and Zn poses a serious challenge to soil ecosystems. This study aimed to evaluate the phytoremediation potential of rice assisted with a plant growth promoting rhizobacteria (PGPR) consortium for the remediation of DEHP, Cd, and Zn co-contaminated soil. The consortium consisted of four bacterial strains, all of which exhibited Cd-Zn resistance and DEHP degradability. The results showed that the rice assisted by the bacterial consortium dissipated 86.1% DEHP while removing 76.0% Cd2+ and 92.2% Zn2+ from soil within 30 d. The presence of the PGPR consortium promoted plant growth and improved soil enzymatic activity, which may have helped enhance the removal of DEHP and heavy metals from the soil. Moreover, the application of the consortium modified the bacterial community and increased the relative abundance of bacteria related to DEHP degradation (Sphingomonas, Xanthobacteraceae), heavy metal immobilization (Massilia), and soil nutrient cycling (Nitrospira, Vicinamibacterales), which promoted plant growth and the removal of DEHP and heavy metals from soil. Notably, the DEHP and heavy metal contents in rice decreased substantially during the phytoremediation process. Therefore, the PGPR consortium could be beneficial for enhancing the removal of DEHP and heavy metals from the soil, without inducing the accumulation of these pollutants in rice. In general, this study confirmed that the combined use of rice and the PGPR consortium could remedy DEHP and heavy metal co-contaminated soil economically and ecologically without simultaneously posing risks for rice consumption.
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Affiliation(s)
- Anran Liu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Wenjing Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Xiancao Chen
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Xiaoyan Zheng
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Wenting Fu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Gang Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Jing Ji
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Chunfeng Guan
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
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13
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González-Velázquez J, Salas-Vázquez E, Flores-Tavizón E, López-Moreno ML. Effect of Cadmium on Macro and Micronutrient Uptake and Translocation by Leucaena leucocephala. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 109:817-822. [PMID: 35925380 DOI: 10.1007/s00128-022-03592-6] [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: 12/30/2021] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Environmental contamination with Cadmium (Cd) is of great concern due to its hazardous effects on living organisms.Query In the present research, Leucaena leucocephala plants were exposed to Cd concentrations of 5, 10, and 15 mg/L to determine their potential use in Cd remediation. Different parameters including Cd uptake, macro/micronutrient content, chlorophyl, and catalase production were determined. Results indicated that Cd uptake by L. leucocephala roots did not show a significant difference between treatments. However, a significant increase in Cd content (Tukey´s HSD) was observed in stems as Cd levels in the media augmented. The highest Cd content (830 ± 20 mg/kg) was determined in stems of plants exposed to 15 mg/L Cd, and no Cd was detected in leaves. Data showed that as Cd concentration increased in the media, Ca, Mg, K, Zn, and Mn decreased. Moreover, while the presence of Cd reduced catalase activity in roots, chlorophyll production was not affected.
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Affiliation(s)
| | - Efraín Salas-Vázquez
- Department of Chemistry, University of Puerto Rico at Mayagüez, Mayagüez, PR, 00681-90002, USA
| | - Edith Flores-Tavizón
- Engineering and Technology Institute, University Autonomous of Ciudad Juárez (UACJ), 32330, Ciudad Juárez, Chihuahua, Mexico
| | - Martha L López-Moreno
- Department of Chemistry, University of Puerto Rico at Mayagüez, Mayagüez, PR, 00681-90002, USA.
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Gao T, Wu Q, Xia Y, Liu Y, Zhu JM, Qi M, Song C, Liu Y, Sun G, Liu C. Flooding-drainage alternations impact mobilization and isotope fractionation of cadmium in soil-rice systems. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129048. [PMID: 35526343 DOI: 10.1016/j.jhazmat.2022.129048] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/22/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
Sequential flooding and draining substantially alter Cd mobilization in paddy fields, primarily due to redox-driven changes in Fe-Mn (hydro)oxides and Cd-sulfides. However, the impacts of carbonates on Cd mobilization during flooding-drainage alternations remain poorly understood. In this study, Cd isotope compositions were analyzed in soils and plants at three growth stages, and the results show a pH-dependent Cd mobilization and isotope fractionation. Sequential extraction shows the Cd mainly binds to the exchangeable fraction and carbonates, and their amounts vary with pH. Exchangeable Cd with light isotopes coprecipitates into carbonates due to increased pH during flooding (tillering and panicle initiation). Whereas in drained soils (maturity), the carbonate-bound Cd releases with decreased pH. Light isotopes are enriched in rice compared with exchangeable Cd, but this enrichment is insignificant at maturity. This difference is mainly caused by the change in Cd isotope composition of exchangeable Cd pool due to carbonate coprecipitation during flooding. Limited isotope fractionation between roots and aboveground tissues is found at tillering, whereas significant isotope fractionation is observed at two other stages, suggesting the nodes might work during Cd translocation between tissues. These findings demonstrate alternating flooding-drainage impacts the mobilization of carbonate-bound Cd and, consequently, isotope fractionation in soil-rice systems.
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Affiliation(s)
- Ting Gao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China
| | - Qiqi Wu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China
| | - Yafei Xia
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yuhui Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jian-Ming Zhu
- State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, PR China
| | - Meng Qi
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Changshun Song
- Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed, Guizhou Education University, Guiyang 550018, PR China
| | - Yizhang Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China
| | - Guangyi Sun
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China
| | - Chengshuai Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, PR China.
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15
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Han M, Yang H, Yu G, Jiang P, You S, Zhang L, Lin H, Liu J, Shu Y. Application of Non-invasive Micro-test Technology (NMT) in environmental fields: A comprehensive review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 240:113706. [PMID: 35659702 DOI: 10.1016/j.ecoenv.2022.113706] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Non-invasive Micro-test Technology (NMT) is a selective microelectrode technique which can detect the flux rates and three-dimensional motion directions of ions or molecules into and out of living organisms in situ without damaging the sample. It has the advantages of maintaining sample integrity, high temporal and spatial resolution, and being able to measure multiple sites simultaneously. In this paper we provide a comprehensive review on the development of NMT in recent years. Its principles, characteristics, and the differences with other microelectrode techniques are introduced. We discuss the applications of NMT in the field of phytoremediation, plant resistance, water quality monitoring, and toxicity mechanisms of heavy metals on organisms. Furthermore, the challenges and future prospects of NMT in the environmental field are presented.
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Affiliation(s)
- Mengxuan Han
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Huan Yang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Guo Yu
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China.
| | - Pingping Jiang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Shaohong You
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China; Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, MNR, Guilin, China.
| | - Lei Zhang
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada
| | - Hua Lin
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
| | - Jie Liu
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China; Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area, MNR, Guilin, China
| | - Yi Shu
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, China
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16
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Wang S, Dai H, Skuza L, Chen Y, Wei S. Difference in Cd 2+ flux around the root tips of different soybean (Glycine max L.) cultivars and physiological response under mild cadmium stress. CHEMOSPHERE 2022; 297:134120. [PMID: 35227753 DOI: 10.1016/j.chemosphere.2022.134120] [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: 01/10/2022] [Revised: 02/17/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
The purpose of the study was to compare differences in Cd2+ flux in the vicinity of root tips of 20 soybean cultivars under mild Cd stress conditions using non-invasive micro-test technology (NMT). The results indicated that Cd2+ influx to the root tips under mild Cd treatment was higher compared to controls. Cd2+ influx showed an obvious spatial distribution, with the highest Cd2+ influx measured 300 μm from the root tips, and a gradually decrease above and below this site. The cultivar Liaodou32 had a lower Cd uptake (3.40 pmol cm-2 s-1), while Liaodou23 had a relatively higher Cd uptake (66.37 pmol cm-2 s-1). Cluster analysis showed that the order of the average Cd2+ influx of the cultivars at a distance of 300 μm from the root tips was as follows: high-uptake cultivars (61.80 pmol cm-2 s-1)>medium-high-uptake cultivars (33.92 pmol cm-2 s-1)>medium-low-uptake cultivars (19.78 pmol cm-2 s-1)>low-uptake cultivars (4.84 pmol cm-2 s-1). We also analyzed physiological responses of different soybean cultivars to mild Cd stress. The results indicated that mild Cd stress could inhibit soluble protein production and root vigor among individual soybean cultivars. Moreover, stress increased SOD, CAT and POD activities and MDA content in root tissues. It should be noted that the physio-biochemical indicators of low-uptake cultivars did not change significantly after exposure to mild Cd stress compared to controls. Pearson's correlation analyses showed that all physio-biochemical indicators were significantly positively associated with influx, except of root SP and biomass. PCA analysis demonstrated that root vigor was a dominant factor causing the differences in Cd tolerance among different soybean seedling cultivars. NMT is of great significance for safe utilization of contaminated soil to distinguish the cultivars with different enrichment capacity for heavy metals from different crop cultivars.
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Affiliation(s)
- Siqi Wang
- Key Laboratory of Wastewater Treatment Technology of Liaoning Province, Academy of Environmental & Chemical Engineering, Shenyang Ligong University, Shenyang, 110159, Liaoning, China; Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Huiping Dai
- College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-resources, Qinling-Bashan Mountains Bioresources Comprehensive Development C.I.C, State Key Laboratory of Biological Resources and Ecological Environment Jointly Built by Qinba Province and Ministry, Shaanxi University of Technology, Hanzhong, 723001, China.
| | - Lidia Skuza
- Institute of Biology, Centre for Molecular Biology and Biotechnology, University of Szczecin, Szczecin, 71-415, Poland
| | - Yanqiu Chen
- Crop Institute of Liaoning Academy of Agricultural Science, Shenyang, Liaoning, 110161, China
| | - Shuhe Wei
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
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17
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Chen H, Zhang Q, Lv W, Yu X, Zhang Z. Ethylene positively regulates Cd tolerance via reactive oxygen species scavenging and apoplastic transport barrier formation in rice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 302:119063. [PMID: 35248615 DOI: 10.1016/j.envpol.2022.119063] [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: 12/16/2021] [Revised: 02/17/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Ethylene regulates plant root growth and resistance to environment stress. However, the role and mechanism of ethylene signaling in response to Cd stress in rice remains unclear. Here, we revealed that ethylene signaling plays a positive role in the resistance of rice to Cd toxicity. Blocking the ethylene signal facilitated root elongation under normal conditions, but resulted in severe oxidative damage and inhibition of root growth under Cd stress. Conversely, ethylene signal enhancement by EIN2 overexpression caused root bending, similar to the response of roots to Cd stress, and displayed higher Cd tolerance than the wildtype (WT) plants. Comparative transcriptome analysis indicated EIN2-mediated upregulation of genes involved in flavonoid biosynthesis and peroxidase activity under Cd stress. The synthesis of phenolic acids and flavonoids were positively regulated by ethylene. Thus, the ein2 (ethylene insensitive 2) mutants displayed lower ROS scavenging capacity than the WT. Moreover, a significant increase in Cd accumulation and relatively increased apoplastic flow were observed in the root apex of the ein2 mutant compared with the WT plants. Overall, EIN2-mediated Cd resistance in rice is mediated by the upregulation of flavonoid biosynthesis and peroxidase activity to induce ROS scavenging, and apoplastic transport barrier formation reduces Cd uptake.
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Affiliation(s)
- Haifei Chen
- College of Resources and Environmental Sciences, Hunan Agricultural University, 410128, Changsha, China
| | - Quan Zhang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, 410128, Changsha, China
| | - Wei Lv
- College of Resources and Environmental Sciences, Hunan Agricultural University, 410128, Changsha, China
| | - Xiaoyi Yu
- College of Resources and Environmental Sciences, Hunan Agricultural University, 410128, Changsha, China
| | - Zhenhua Zhang
- College of Resources and Environmental Sciences, Hunan Agricultural University, 410128, Changsha, China.
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18
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Etemadi T, Momeni HR, Darbandi N, Abnosi MH. Silymarin modulates cadmium-induced oxidative stress in human spermatozoa. Andrologia 2022; 54:e14475. [PMID: 35640054 DOI: 10.1111/and.14475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/28/2022] [Accepted: 05/03/2022] [Indexed: 11/30/2022] Open
Abstract
Environmental pollutants such as cadmium can negatively affect sperm parameters and decrease male fertility by inducing oxidative stress. Antioxidants are considered a useful strategy for oxidative stress conditions to neutralize free radicals and strengthen the antioxidant defence system. In this study, the effects of the common application of silymarin, as a natural antioxidant, with cadmium were assessed on human sperm. The washed human sperm samples were divided into five groups: (1) spermatozoa at 0- hour; (2) spermatozoa at 3 h; (3) spermatozoa treated with cadmium (20 μM) for 3 h; (4) spermatozoa treated with silymarin (2 μM) + cadmium (20 μM) for 3 h and (5) spermatozoa treated with silymarin (2 μM) for 3 h. Our results displayed that cadmium reduced sperm motility, viability, plasma membrane integrity and acrosome integrity by increasing malondialdehyde levels and decreasing the total antioxidant capacity and antioxidant enzymes activity. While silymarin attenuated oxidative stress biomarkers in human sperm treated with cadmium, and consequently improved the sperm quality. In summary, cadmium-induced oxidative stress impaired human sperm structures and silymarin with its antioxidant properties compensated for the adverse effects of oxidative stress on human spermatozoa.
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Affiliation(s)
- Tahereh Etemadi
- Biology Department, Faculty of Science, Arak University, Arak, Iran
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19
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Saravi KV, Saeidi-Sar S, Ramezanpour MR, Roudi B. Contribution of Funneliformis mosseae symbiosis to the regulation of sulfur assimilation, glyoxalase system and ionic homeostasis in Aloysia citriodora Palau under cadmium toxicity. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01088-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Rehman S, Chattha MU, Khan I, Mahmood A, Hassan MU, Al-Huqail AA, Salem MZM, Ali HM, Hano C, El-Esawi MA. Exogenously Applied Trehalose Augments Cadmium Stress Tolerance and Yield of Mung Bean ( Vigna radiata L.) Grown in Soil and Hydroponic Systems through Reducing Cd Uptake and Enhancing Photosynthetic Efficiency and Antioxidant Defense Systems. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11060822. [PMID: 35336703 PMCID: PMC8953803 DOI: 10.3390/plants11060822] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/09/2022] [Accepted: 03/14/2022] [Indexed: 05/15/2023]
Abstract
Cadmium (Cd) toxicity is a serious environmental issue causing a significant reduction in crop growth and productivity globally. Trehalose (Tre) has emerged as an important reducing sugar that can reduce the adverse impacts of different abiotic stresses. Therefore, the present investigation was performed to determine the key role of Tre in alleviating Cd stress in the mung bean (Vigna radiata L.) crop. The study was comprised of different treatments of cadmium (0, 10, 20 mg kg-1 soil) and Tre (0, 15 and 30 mM). Cd stress significantly restricted the growth and yield of mung bean. However, Tre supplementation markedly improved growth and yield due to pronounced reductions in Cd uptake and Cd-induced oxidative stress as shown by the lower production of hydrogen peroxide (H2O2), electrolyte leakage (EL) and malondialdehyde (MDA) in Cd-stressed plants as well as by the enhanced activities of antioxidant enzymes (CAT, POD, APX and AsA). Moreover, the ameliorative role of Tre to Cd toxicity was also demonstrated by its ability to enhance chlorophyll contents, total soluble protein (TSP) and free amino acids (FAA). Taken together, Tre supplementation played a key beneficial role in improving Cd stress tolerance and yield traits of mung bean through restricting Cd uptake and enhancing photosynthetic capacity, osmolytes biosynthesis and antioxidant activities.
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Affiliation(s)
- Sadia Rehman
- Department of Botany, University of Agriculture, Faisalabad 38040, Pakistan;
| | - Muhammad Umer Chattha
- Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan; (M.U.C.); (I.K.); (A.M.)
| | - Imran Khan
- Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan; (M.U.C.); (I.K.); (A.M.)
| | - Athar Mahmood
- Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan; (M.U.C.); (I.K.); (A.M.)
| | - Muhammad Umair Hassan
- Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, China;
| | - Asma A. Al-Huqail
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.A.A.-H.); (H.M.A.)
| | - Mohamed Z. M. Salem
- Forestry and Wood Technology Department, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt;
| | - Hayssam M. Ali
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.A.A.-H.); (H.M.A.)
| | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRAE USC1328, Université d’Orléans, 28000 Chartres, France;
| | - Mohamed A. El-Esawi
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
- Correspondence:
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Adamakis IDS, Sperdouli I, Hanć A, Dobrikova A, Apostolova E, Moustakas M. Rapid Hormetic Responses of Photosystem II Photochemistry of Clary Sage to Cadmium Exposure. Int J Mol Sci 2020; 22:E41. [PMID: 33375193 PMCID: PMC7793146 DOI: 10.3390/ijms22010041] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/15/2020] [Accepted: 12/17/2020] [Indexed: 12/11/2022] Open
Abstract
Five-day exposure of clary sage (Salvia sclarea L.) to 100 μM cadmium (Cd) in hydroponics was sufficient to increase Cd concentrations significantly in roots and aboveground parts and affect negatively whole plant levels of calcium (Ca) and magnesium (Mg), since Cd competes for Ca channels, while reduced Mg concentrations are associated with increased Cd tolerance. Total zinc (Zn), copper (Cu), and iron (Fe) uptake increased but their translocation to the aboveground parts decreased. Despite the substantial levels of Cd in leaves, without any observed defects on chloroplast ultrastructure, an enhanced photosystem II (PSII) efficiency was observed, with a higher fraction of absorbed light energy to be directed to photochemistry (ΦPSΙΙ). The concomitant increase in the photoprotective mechanism of non-photochemical quenching of photosynthesis (NPQ) resulted in an important decrease in the dissipated non-regulated energy (ΦNO), modifying the homeostasis of reactive oxygen species (ROS), through a decreased singlet oxygen (1O2) formation. A basal ROS level was detected in control plant leaves for optimal growth, while a low increased level of ROS under 5 days Cd exposure seemed to be beneficial for triggering defense responses, and a high level of ROS out of the boundaries (8 days Cd exposure), was harmful to plants. Thus, when clary sage was exposed to Cd for a short period, tolerance mechanisms were triggered. However, exposure to a combination of Cd and high light or to Cd alone (8 days) resulted in an inhibition of PSII functionality, indicating Cd toxicity. Thus, the rapid activation of PSII functionality at short time exposure and the inhibition at longer duration suggests a hormetic response and describes these effects in terms of "adaptive response" and "toxicity", respectively.
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Affiliation(s)
| | - Ilektra Sperdouli
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization—Demeter, Thermi, 57001 Thessaloniki, Greece;
| | - Anetta Hanć
- Department of Trace Analysis, Faculty of Chemistry, Adam Mickiewicz University, 61-614 Poznań, Poland;
| | - Anelia Dobrikova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (A.D.); (E.A.)
| | - Emilia Apostolova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (A.D.); (E.A.)
| | - Michael Moustakas
- Department of Botany, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Zhang Y, Sun R, Wang L, Zhu Y, Tuyiringire D, Yang Y, Li K, Han W, Wang Y, Yan L. Physiological responses of Arthrobacter sp. JQ-1 cell interfaces to co-existed di-(2-ethylhexyl) phthalate (DEHP) and copper. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111163. [PMID: 32836159 DOI: 10.1016/j.ecoenv.2020.111163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/20/2020] [Accepted: 08/09/2020] [Indexed: 06/11/2023]
Abstract
Arthrobacter sp. JQ-1 can completely degrade 500 mg/L of DEHP within 3 days. The minimum inhibitory concentrations (MICs) of Cu2+ could reach 1.56 mM, however, 5.0 mg/L Cu2+ apparently inhibited DEHP degradation and bacterial growth. Consequently, JQ-1 was exposed to the DEHP-copper environment to verify the toxicity mechanism based on the physiological responses of cellular multiple interfaces (cellular surface, membrane and intracellular characteristics). The results showed the combination of 500 mg/L DEHP and 5.0 mg/L Cu2+ significantly decreased cell surface hydrophobicity (CSH) and the absolute value of zeta potential, which implied the bioavailability of DEHP was decreased. The cellular surface changes were mainly due to the interaction between Cu2+ and some functional groups (CH2, CH3, aromatic rings, and amide). The weakened proton-motive force (PMF) across the plasma membrane may interfere the formation and utilization of energy, which is not conducive to the repair process of cellular damages. In this study, Non-invasive micro-test technology (NMT) was applied to the research of combined toxicity of DEHP and heavy metal ions for the first time. DEHP-copper intensified K+ efflux and Ca2+ influx across the plasma membrane, which disturbed ion homeostasis of K+ and Ca2+ and might induce apoptosis and further inhibit DEHP degradation. The decline of intracellular esterase activity indicated that the metabolic capacity is apparently restrained. This study enhances our understanding of cellular different interface processes responding to combined pollutants.
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Affiliation(s)
- Ying Zhang
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Ruixue Sun
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Lei Wang
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yue Zhu
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Diogene Tuyiringire
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ying Yang
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Kuimin Li
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Wei Han
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yifan Wang
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Lilong Yan
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
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Calcium Plays a Double-Edged Role in Modulating Cadmium Uptake and Translocation in Rice. Int J Mol Sci 2020; 21:ijms21218058. [PMID: 33137932 PMCID: PMC7662230 DOI: 10.3390/ijms21218058] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 01/11/2023] Open
Abstract
Cadmium (Cd) contamination in soils poses great risks to both agricultural production and human health. Calcium (Ca) is an essential element playing a significant role in protecting plants against Cd toxicity. However, how Ca affects Cd uptake and translocation in rice is still not fully elucidated. In this study, the regulatory role of Ca in Cd uptake and upward translocation was investigated in rice at different growth stages. Our results showed that the supplement of 5 mM Ca significantly reduced Cd uptake by rice roots, because of their competition for Ca-permeable channels as an absorption site and Ca-induced downregulation of OsNRAMP1 and OsNRAMP5. However, Ca application facilitated the upward translocation of Cd by both upregulating OsHMA2 to induce xylem loading of Cd and downregulating OsHMA3 to reduce vacuolar sequestration of Cd. Such contrary results suggested a double-edged role of Ca in regulating root Cd uptake and root-to-shoot Cd translocation in rice. Although it increased Cd content in the aboveground vegetative tissues during the whole growth period, the addition of 5 mM Ca eventually decreased Cd content in rice grains at the ripening stage. All these results suggest that Ca-based amendments possess great potential for the production of low-Cd rice grains.
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Požgajová M, Navrátilová A, Šebová E, Kovár M, Kačániová M. Cadmium-Induced Cell Homeostasis Impairment is Suppressed by the Tor1 Deficiency in Fission Yeast. Int J Mol Sci 2020; 21:ijms21217847. [PMID: 33105893 PMCID: PMC7660220 DOI: 10.3390/ijms21217847] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/10/2020] [Accepted: 10/19/2020] [Indexed: 12/16/2022] Open
Abstract
Cadmium has no known physiological function in the body; however, its adverse effects are associated with cancer and many types of organ system damage. Although much has been shown about Cd toxicity, the underlying mechanisms of its responses to the organism remain unclear. In this study, the role of Tor1, a catalytic subunit of the target of rapamycin complex 2 (TORC2), in Cd-mediated effects on cell proliferation, the antioxidant system, morphology, and ionome balance was investigated in the eukaryotic model organism Schizosaccharomyces pombe. Surprisingly, spectrophotometric and biochemical analyses revealed that the growth rate conditions and antioxidant defense mechanisms are considerably better in cells lacking the Tor1 signaling. The malondialdehyde (MDA) content of Tor1-deficient cells upon Cd treatment represents approximately half of the wild-type content. The microscopic determination of the cell morphological parameters indicates the role for Tor1 in cell shape maintenance. The ion content, determined by inductively coupled plasma optical emission spectroscopy (ICP-OES), showed that the Cd uptake potency was markedly lower in Tor1-depleted compared to wild-type cells. Conclusively, we show that the cadmium-mediated cell impairments in the fission yeast significantly depend on the Tor1 signaling. Additionally, the data presented here suggest the yet-undefined role of Tor1 in the transport of ions.
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Affiliation(s)
- Miroslava Požgajová
- AgroBioTech Research Centre, Slovak University of Agriculture in Nitra, 949 76 Nitra, Slovakia
- Correspondence: ; Tel.: +421-37-641-4919
| | - Alica Navrátilová
- Department of Genetics and Breeding Biology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, 94976 Nitra, Slovakia;
| | - Eva Šebová
- Institute of Experimental Medicine, Czech Academy of Science, 14220 Prague, Czech Republic;
| | - Marek Kovár
- Department of Plant Physiology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture in Nitra, 94976 Nitra, Slovakia;
| | - Miroslava Kačániová
- Department of Fruit Science, Viticulture and Enology, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture in Nitra, 94976 Nitra, Slovakia;
- Department of Bioenergetics, Food Analysis and Microbiology, Institute of Food Technology and Nutrition, University of Rzeszow, 35-601 Rzeszow, Poland
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Adil MF, Sehar S, Han Z, Wa Lwalaba JL, Jilani G, Zeng F, Chen ZH, Shamsi IH. Zinc alleviates cadmium toxicity by modulating photosynthesis, ROS homeostasis, and cation flux kinetics in rice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114979. [PMID: 32585549 DOI: 10.1016/j.envpol.2020.114979] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 05/19/2020] [Accepted: 06/04/2020] [Indexed: 05/03/2023]
Abstract
Understanding of cadmium (Cd) uptake mechanism and development of lower Cd crop genotypes are crucial for combating its phytotoxicity and meeting 70% increase in food demand by 2050. Bio-accumulation of Cd continuously challenges quality of life specifically in regions without adequate environmental planning. Here, we investigated the mechanisms operating in Cd tolerance of two rice genotypes (Heizhan-43 and Yinni-801). Damage to chlorophyll contents and PSII, histochemical staining and quantification of reactive oxygen species (ROS), cell viability and osmolyte accumulation were studied to decipher the interactions between Cd and zinc (Zn) by applying two Cd and two Zn levels (alone as well as combined). Cd2+ and Ca2+ fluxes were also measured by employing sole Cd100 (100 μmol L-1) and Zn50 (50 μmol L-1), and their combination with microelectrode ion flux estimation (MIFE) technique. Cd toxicity substantially reduced chlorophyll contents and maximal photochemical efficiency (Fv/Fm) compared to control plants. Zn supplementation reverted the Cd-induced toxicity by augmenting osmoprotectants and interfering with ROS homeostasis under combined treatments, particularly in Yinni-801 genotype. Fluorescence microscopy indicated a unique pattern of live and dead root cells, depicting more damage with Cd10, Cd15 and Cd15+Zn50. Our results confer that Cd2+ impairs the uptake of Ca2+ whereas, Zn not only competes with Cd2+ but also Ca2+, thereby modifying ion homeostasis in rice plants. This study suggests that exogenous application of Zn is beneficial for rice plants in ameliorating Cd toxicity in a genotype and dose dependent manner by minimizing ROS generation and suppressing collective oxidative damage. The observations confer that Yinni-801 performed better than Heizhan-43 genotype mainly under combined Zn treatments with low-Cd, presenting Zn fortification as a solution to increase rice production.
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Affiliation(s)
- Muhammad Faheem Adil
- Department of Agronomy, College of Agriculture and Biotechnology, Key Laboratory of Crop Germplasm Resource, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Shafaque Sehar
- Department of Agronomy, College of Agriculture and Biotechnology, Key Laboratory of Crop Germplasm Resource, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zhigang Han
- Department of Agronomy, College of Agriculture and Biotechnology, Key Laboratory of Crop Germplasm Resource, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Jonas Lwalaba Wa Lwalaba
- Department of Agronomy, College of Agriculture and Biotechnology, Key Laboratory of Crop Germplasm Resource, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Ghulam Jilani
- Institute of Soil Science, PMAS Arid Agriculture University, Rawalpindi, 46300, Pakistan
| | - Fanrong Zeng
- Department of Agronomy, College of Agriculture and Biotechnology, Key Laboratory of Crop Germplasm Resource, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, NSW, 2751, Australia; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2751, Australia
| | - Imran Haider Shamsi
- Department of Agronomy, College of Agriculture and Biotechnology, Key Laboratory of Crop Germplasm Resource, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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da Silva Montes C, Pantoja Ferreira MA, Giarrizzo T, Amado LL, Rocha RM. Evaluation of metal contamination effects in piranhas through biomonitoring and multi biomarkers approach. Heliyon 2020; 6:e04666. [PMID: 32904315 PMCID: PMC7452536 DOI: 10.1016/j.heliyon.2020.e04666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 03/01/2020] [Accepted: 08/05/2020] [Indexed: 11/18/2022] Open
Abstract
The present field study aimed to assess the water quality of the Itacaiúnas River, located at the eastern part of the Brazilian Amazon, using water's physicochemical parameters, ecological risk assessment in sediments, biomarkers and metal bioaccumulation in piranhas at two points: upstream (P1) and downstream (P2), and the type of season (Dry and Rainy). We revealed a significant difference between the points and the seasons. Concerning, the concentration of metals (Cd, Cu, Zn, Cr, and Hg) in sediment and water, we reported significant concentrations of Cd and Cu especially on P2 at dry season. The fish gills collected in P2 showed various types of damages (moderate and severe), furthermore, the Degree of Tissue Change (DTC) reported a significant difference between points, highlighting the dreadful condition in animals' health originated from this point. In terms of the biotransformation enzyme, the GST activity was higher in fishes from P2 in both seasons. The obtained results showed clear signs of stress in fish from the downstream point. Linear correlation analysis exhibited that the biomarkers' response could be linked to the detected metals bioaccumulation. This field investigation provides baseline data on pollution status in this region and the results showed that although the overall potential ecological risks of the metals were considered low at our sampling sites including cadmium, however, Cd posed a noteworthy monomial potential ecological risk factor. Strong evidence of correlation was obtained between Cd in the environment with the gills' damage in fishes from P2. The results also indicated that S. rhombeus could be useful for biomonitoring species for assessing metal contamination.
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Affiliation(s)
- Caroline da Silva Montes
- Laboratory of Cellular Ultrastructure and Immunohistochemistry, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Pará, Brazil
- Corresponding author.
| | - Maria Auxiliadora Pantoja Ferreira
- Laboratory of Cellular Ultrastructure and Immunohistochemistry, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Pará, Brazil
| | - Tommaso Giarrizzo
- Laboratory of Fisheries Biology – Aquatic Resource Management, Federal University of Pará (UFPA), Belém, Pará, Brazil
| | - Lílian Lund Amado
- Research Group in Aquatic Pollution Biomarkers in Amazonia – BioPAq, Federal University of Pará (UFPA), Belém, Pará, Brazil
| | - Rossineide Martins Rocha
- Laboratory of Cellular Ultrastructure and Immunohistochemistry, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Pará, Brazil
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27
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Holubek R, Deckert J, Zinicovscaia I, Yushin N, Vergel K, Frontasyeva M, Sirotkin AV, Bajia DS, Chmielowska-Bąk J. The Recovery of Soybean Plants after Short-Term Cadmium Stress. PLANTS (BASEL, SWITZERLAND) 2020; 9:E782. [PMID: 32580460 PMCID: PMC7356936 DOI: 10.3390/plants9060782] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cadmium is a non-essential heavy metal, which is toxic even in relatively low concentrations. Although the mechanisms of Cd toxicity are well documented, there is limited information concerning the recovery of plants after exposure to this metal. METHODS The present study describes the recovery of soybean plants treated for 48 h with Cd at two concentrations: 10 and 25 mg/L. In the frame of the study the growth, cell viability, level of membrane damage makers, mineral content, photosynthesis parameters, and global methylation level have been assessed directly after Cd treatment and/or after 7 days of growth in optimal conditions. RESULTS The results show that exposure to Cd leads to the development of toxicity symptoms such as growth inhibition, increased cell mortality, and membrane damage. After a recovery period of 7 days, the exposed plants showed no differences in relation to the control in all analyzed parameters, with an exception of a slight reduction in root length and changed content of potassium, magnesium, and manganese. CONCLUSIONS The results indicate that soybean plants are able to efficiently recover even after relatively severe Cd stress. On the other hand, previous exposure to Cd stress modulated their mineral uptake.
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Affiliation(s)
- Renata Holubek
- Department of Zoology and Anthropology, Faculty of Natural Sciences, Constantine the Philosopher University, ul. Nábrežie mládeže 91, 949-74 Nitra, Slovakia; (R.H.); (A.V.S.)
| | - Joanna Deckert
- Department of Plant Ecophysiology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland;
| | - Inga Zinicovscaia
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 1419890 Dubna, Moscow Region, Russian; (I.Z.); (N.Y.); (K.V.); (M.F.)
- Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Str. MG-6, 077125 Bucharest–Magurele, Romania
| | - Nikita Yushin
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 1419890 Dubna, Moscow Region, Russian; (I.Z.); (N.Y.); (K.V.); (M.F.)
| | - Konstantin Vergel
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 1419890 Dubna, Moscow Region, Russian; (I.Z.); (N.Y.); (K.V.); (M.F.)
| | - Marina Frontasyeva
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 1419890 Dubna, Moscow Region, Russian; (I.Z.); (N.Y.); (K.V.); (M.F.)
| | - Alexander V. Sirotkin
- Department of Zoology and Anthropology, Faculty of Natural Sciences, Constantine the Philosopher University, ul. Nábrežie mládeže 91, 949-74 Nitra, Slovakia; (R.H.); (A.V.S.)
| | - Donald Samdumu Bajia
- Department of Biochemistry, Faculty of Science, The University of Bamenda, ENS Street, Bambili, Cameroon;
- Department of Biotechnology, University of Verona, Via San Francesco, 22, 37129 Verona VR, Italy
| | - Jagna Chmielowska-Bąk
- Department of Plant Ecophysiology, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland;
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Chen L, Yang J, Li X, Liang T, Nie C, Xie F, Liu K, Peng X, Xie J. Carbon nanoparticles enhance potassium uptake via upregulating potassium channel expression and imitating biological ion channels in BY-2 cells. J Nanobiotechnology 2020; 18:21. [PMID: 31992314 PMCID: PMC6986061 DOI: 10.1186/s12951-020-0581-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 01/16/2020] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Carbon nanoparticles (CNPs) have been reported to boost plant growth, while the mechanism that CNPs enhanced potassium uptake for plant growth has not been reported so far. RESULTS In this study, the function that CNPs promoted potassium uptake in BY-2 cells was established and the potassium accumulated in cells had a significant correlation with the fresh biomass of BY-2 cells. The K+ accumulation in cells increased with the increasing concentration of CNPs. The K+ influx reached high level after treatment with CNPs and was significantly higher than that of the control group and the negative group treated with K+ channels blocker, tetraethylammonium chloride (TEA+). The K+ accumulation was not reduced in the presence of CNPs inhibitors. In the presence of potassium channel blocker TEA+ or CNPs inhibitors, the NKT1 gene expression was changed compared with the control group. The CNPs were found to preferentially transport K+ than other cations determined by rectification of ion current assay (RIC) in a conical nanocapillary. CONCLUSIONS These results indicated that CNPs upregulated potassium gene expression to enhance K+ accumulation in BY-2 cells. Moreover, it was speculated that the CNPs simulated protein of ion channels via bulk of carboxyl for K+ permeating. These findings will provide support for improving plant growth by carbon nanoparticles.
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Affiliation(s)
- Lijuan Chen
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Jinchu Yang
- Technology Center, China Tobacco Henan Industrial Co. Ltd, Zhengzhou, 450000, China
| | - Xiang Li
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Taibo Liang
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Cong Nie
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Fuwei Xie
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Kejian Liu
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China
| | - Jianping Xie
- Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China.
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29
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Dabral S, Varma A, Choudhary DK, Bahuguna RN, Nath M. Biopriming with Piriformospora indica ameliorates cadmium stress in rice by lowering oxidative stress and cell death in root cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 186:109741. [PMID: 31600651 DOI: 10.1016/j.ecoenv.2019.109741] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/25/2019] [Accepted: 09/28/2019] [Indexed: 05/24/2023]
Abstract
Piriformospora indica is known for plant growth promotion and abiotic stress alleviation potential in several agricultural crops. However, a systemic analysis is warranted to explore potential application of this important fungus to augment heavy metal tolerance in rice. The present study explores potential of P. indica in ameliorating the effect of cadmium (Cd) stress in rice cultivars N22 and IR64. Seedlings inoculated with P. indica recorded significantly higher root-shoot length and biomass as compared to non-inoculated plants under control and Cd stress, respectively. Moreover, P. indica inoculated stressed roots accumulated more Cd as compared to non-inoculated stressed roots in both the varieties. Interestingly, cell death and reactive oxygen species (ROS) accumulation were significantly lower in the inoculated plant roots as compare with non-inoculated roots under Cd stress. The results emphasized significantly higher accumulation of Cd in fungal spores could reduce ROS accumulation in root cells resulting in lower cell death.
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Affiliation(s)
- Surbhi Dabral
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India
| | - Ajit Varma
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India
| | - Devendra Kumar Choudhary
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India.
| | - Rajeev Nayan Bahuguna
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India; Center for Advance Studies on Climate Change, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, 848125, India.
| | - Manoj Nath
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Sector 125, Noida, 201313, India; ICAR-Directorate of Mushroom Research, Chambaghat, Solan, Himachal Pradesh, 173213, India.
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Ramakrishna P, Barberon M. Polarized transport across root epithelia. CURRENT OPINION IN PLANT BIOLOGY 2019; 52:23-29. [PMID: 31323542 DOI: 10.1016/j.pbi.2019.05.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 06/10/2023]
Abstract
Plant roots explore the soil to acquire water and nutrients which are often available at concentrations that drastically differ from the plant's actual need for growth and development. This stark difference between availability and requirement can be dealt with owing to the root's architecture as an inverted gut. In roots, the two epithelial characteristics (selective acquisition and diffusion barrier) are split between two cell layers: the epidermis at the root periphery and the endodermis as the innermost cortical cell layer around the vasculature. Polarized transport of nutrients across the root epithelium can be achieved through different pathways: apoplastic, symplastic, or coupled transcellular. This review highlights different features of the root that allow this polarized transport. Special emphasis is placed on the coupled transcellular pathway, facilitated by polarized nutrient carriers along root cell layers but barred by suberin lamellae in endodermal cells.
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Affiliation(s)
- Priya Ramakrishna
- Department of Botany and Plant Biology, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Marie Barberon
- Department of Botany and Plant Biology, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland.
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31
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Li H, Li Z, Khaliq MA, Xie T, Chen Y, Wang G. Chlorine weaken the immobilization of Cd in soil-rice systems by biochar. CHEMOSPHERE 2019; 235:1172-1179. [PMID: 31561308 DOI: 10.1016/j.chemosphere.2019.06.203] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 06/10/2023]
Abstract
Rice (Oryza sativa L.) was cultivated in a Cd-contaminated soils with rice straw biochar (BC) and water-washed rice straw biochar (W-BC) were applied to investigate the underlying mechanisms and possible reasons for biochar's weakening effects on the immobilization of Cd in soil-rice system. The results indicated that W-BC reduced the Cd concentration in pore water as well as in the roots and shoots of rice by 26.24%, 53.23% and 62.47% respectively. On the contrary, there was an increase in Cd contents by 50.27% in pore water, 2.32% in the roots, and 12.80% in the shoots of rice under BC treatment. Furthermore, Cd content in rice shoot was significantly and positively correlated with Cl- addition to the soil (P < 0.01). This phenomenon could be attributed to several combined effects: (1) the increase of Cl- in the soil decreased the soil pH, enhanced the dissolved organic carbon in soil pore water and increased the complexes of Cd2+ and Cl-, resulting in the release of Cd from solid phase into solution phase, (2) the chloride in the soil increased the uptake of CdCl+ instead of Cd2+ by the roots, thereby causing an increase of Cd in rice tissues. These results demonstrate for the first time that biochar with high chloride content could weaken its immobilization effects on soil Cd and even enhance Cd uptake by rice.
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Affiliation(s)
- Honghong Li
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China; School of History and Geography, Minnan Normal University, Zhangzhou 363000, Fujian Province, PR China
| | - Zhou Li
- College of Crop Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian Province, PR China
| | - Muhammad Athar Khaliq
- Department of Soil and Environmental Sciences, Ghazi University, Dera Ghazi Khan 32200, Punjab, Pakistan
| | - Tuanhui Xie
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Yanhui Chen
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Guo Wang
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China.
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Mao P, Zhuang P, Li F, McBride MB, Ren W, Li Y, Li Y, Mo H, Fu H, Li Z. Phosphate addition diminishes the efficacy of wollastonite in decreasing Cd uptake by rice (Oryza sativa L.) in paddy soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 687:441-450. [PMID: 31212152 DOI: 10.1016/j.scitotenv.2019.05.471] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/30/2019] [Accepted: 05/30/2019] [Indexed: 06/09/2023]
Abstract
Cadmium (Cd) contamination in paddy soils poses food security risks and public health concerns. Exploring effective strategies to reduce rice grain Cd is an urgent need. In this study, field plot experiments were conducted to evaluate the effects of wollastonite application with or without phosphate (P) addition on Cd accumulation in rice (Oryza sativa L.). Co-application of P and wollastonite showed greater efficiency than wollastonite amendments alone in raising soil pH and CEC and decreasing soil Cd availability. Cd concentration in brown rice was decreased by 71% under the wollastonite treatment alone, but was decreased by only 29-39% when wollastonite was coupled with different P amendments. This seeming contradiction could be ascribed to the dramatic decline in the phytoavailability of manganese (Mn) and the increase in molar ratio of iron (Fe) to Mn (Fe/Mn) in Fe plaques on root surfaces in the presence of P additions. Significant negative correlations between Mn and Cd in rice plants and positive correlations between Fe/Mn in Fe plaque and Cd in rice plants indicated that P-induced soil Mn deficiency and reduced Mn in Fe plaque impeded the alleviation of Cd accumulation in rice. Application of wollastonite in Si-deficient paddy soils was effective in reducing rice Cd accumulation while boosting rice yield, but co-application of P and wollastonite was counterproductive and should be avoided. This work emphasized that a better understanding of the relationships between Cd and related mineral nutrient uptake would be helpful in developing more efficient measures to reduce rice grain Cd.
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Affiliation(s)
- Peng Mao
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Zhuang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Feng Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Murray B McBride
- Section of Soil and Crop Sciences, School of Integrative Plant Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Wendan Ren
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongxing Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Yingwen Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Hui Mo
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Haoyang Fu
- University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Material, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Zhian Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
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Pozgajova M, Navratilova A, Arvay J, Duranova H, Trakovicka A. Impact of cadmium and nickel on ion homeostasis in the yeast Schizosaccharomyces pombe. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 55:166-173. [PMID: 31588841 DOI: 10.1080/03601234.2019.1673613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Toxicity of heavy metals to living organisms is a worldwide research topic. Although, much has been discovered about cadmium and nickel impact on biological systems, a lot still remains unclear. We used inductively coupled plasma - optical emission spectroscopy to address the question of the effect of two different heavy metals nickel, and cadmium on intracellular ion balance. Increase or decrease of the content of several essential cations including Ca2+, Na+, K+, Mg2+, Cu2+, Fe3+ in the yeast Schizosaccharomyces pombe was determined. Our results revealed that the cell exposure to high nickel and cadmium concentrations led to significant elevation of Ca2+, Na+, Mg2+, Cu2+, Fe3+ levels in the yeast cell, while the content of K+ decreased. Correlation analyses showing in the presence of nickel and cadmium strong positive correlation among each tested element (Ca2+, Na+, Cu2+, Mg2+ and Fe3+) except for K+, demonstrate the significant impact of heavy metal treatment to ion homeostasis of the cell. Our data indicate that acute nickel and cadmium contamination leads to substantial ionome misbalance in yeast.
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Affiliation(s)
- Miroslava Pozgajova
- AgroBioTech Research Center, Slovak University of Agriculture, Nitra, Slovakia
| | - Alica Navratilova
- Department of Genetics and Breeding Biology, Slovak University of Agriculture, Nitra, Slovakia
| | - Julius Arvay
- Department of Chemistry, Slovak University of Agriculture, Nitra, Slovakia
| | - Hana Duranova
- AgroBioTech Research Center, Slovak University of Agriculture, Nitra, Slovakia
| | - Anna Trakovicka
- Department of Genetics and Breeding Biology, Slovak University of Agriculture, Nitra, Slovakia
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Chen J, Zou W, Meng L, Fan X, Xu G, Ye G. Advances in the Uptake and Transport Mechanisms and QTLs Mapping of Cadmium in Rice. Int J Mol Sci 2019; 20:ijms20143417. [PMID: 31336794 PMCID: PMC6678204 DOI: 10.3390/ijms20143417] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 02/07/2023] Open
Abstract
Cadmium (Cd), as a heavy metal, presents substantial biological toxicity and has harmful effects on human health. To lower the ingress levels of human Cd, it is necessary for Cd content in food crops to be reduced, which is of considerable significance for ensuring food safety. This review will summarize the genetic traits of Cd accumulation in rice and examine the mechanism of Cd uptake and translocation in rice. The status of genes related to Cd stress and Cd accumulation in rice in recent years will be summarized, and the genes related to Cd accumulation in rice will be classified according to their functions. In addition, an overview of quantitative trait loci (QTLs) mapping populations in rice will be introduced, aiming to provide a theoretical reference for the breeding of rice varieties with low Cd accumulation. Finally, existing problems and prospects will be put forward.
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Affiliation(s)
- Jingguang Chen
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wenli Zou
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Lijun Meng
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
| | - Xiaorong Fan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Guohua Xu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Guoyou Ye
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
- Strategic Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila 1226, Philippines
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Sa G, Yao J, Deng C, Liu J, Zhang Y, Zhu Z, Zhang Y, Ma X, Zhao R, Lin S, Lu C, Polle A, Chen S. Amelioration of nitrate uptake under salt stress by ectomycorrhiza with and without a Hartig net. THE NEW PHYTOLOGIST 2019; 222:1951-1964. [PMID: 30756398 PMCID: PMC6594093 DOI: 10.1111/nph.15740] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 02/01/2019] [Indexed: 05/13/2023]
Abstract
Salt stress is an important environmental cue impeding poplar nitrogen nutrition. Here, we characterized the impact of salinity on proton-driven nitrate fluxes in ectomycorrhizal roots and the importance of a Hartig net for nitrate uptake. We employed two Paxillus involutus strains for root colonization: MAJ, which forms typical ectomycorrhizal structures (mantle and Hartig net), and NAU, colonizing roots with a thin, loose hyphal sheath. Fungus-colonized and noncolonized Populus × canescens were exposed to sodium chloride and used to measure root surface pH, nitrate (NO3- ) flux and transcription of NO3- transporters (NRTs; PcNRT1.1, -1.2, -2.1), and plasmalemma proton ATPases (HAs; PcHA4, -8, -11). Paxillus colonization enhanced root NO3- uptake, decreased surface pH, and stimulated NRTs and HA4 of the host regardless the presence or absence of a Hartig net. Under salt stress, noncolonized roots exhibited strong net NO3- efflux, whereas beneficial effects of fungal colonization on surface pH and HAs prevented NO3- loss. Inhibition of HAs abolished NO3- influx under all conditions. We found that stimulation of HAs was crucial for the beneficial influence of ectomycorrhiza on NO3- uptake, whereas the presence of a Hartig net was not required for improved NO3- translocation. Mycorrhizas may contribute to host adaptation to salt-affected environments by keeping up NO3- nutrition.
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Affiliation(s)
- Gang Sa
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
- Gansu Provincial Key Laboratory of Aridland Crop SciencesGansu Agricultural UniversityLanzhou730070China
| | - Jun Yao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Chen Deng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Jian Liu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Yinan Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Zhimei Zhu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Yuhong Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Xujun Ma
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
- Urat Desert‐Grassland Research StationNorthwest Institute of Eco‐Environment and ResourcesChinese Academy of ScienceLanzhou730000China
| | - Rui Zhao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Shanzhi Lin
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Cunfu Lu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
| | - Andrea Polle
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
- Forest Botany and Tree PhysiologyUniversity of GoettingenGöttingen37077Germany
| | - Shaoliang Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular DesignCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBox 162Beijing100083China
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He X, Richmond MEA, Williams DV, Zheng W, Wu F. Exogenous Glycinebetaine Reduces Cadmium Uptake and Mitigates Cadmium Toxicity in Two Tobacco Genotypes Differing in Cadmium Tolerance. Int J Mol Sci 2019; 20:E1612. [PMID: 30935160 PMCID: PMC6480294 DOI: 10.3390/ijms20071612] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/23/2019] [Accepted: 03/29/2019] [Indexed: 02/02/2023] Open
Abstract
Greenhouse hydroponic experiments were conducted using Cd-sensitive (cv. Guiyan1) and Cd-tolerant (cv. Yunyan2) tobacco cultivars to study the ameliorative effects of exogenous glycinebetaine (GB) upon 5 μM Cd stress. The foliar spray of GB markedly reduced Cd concentrations in plants and alleviated Cd-induced soil plant analysis development (SPAD) value, plant height and root length inhibition, with the mitigation effect being more obvious in Yunyan2. External GB markedly reduced Cd-induced malondialdehyde (MDA) accumulation, induced stomatal closure, ameliorated Cd-induced damages on leaf/root ultrastructure, and increased the chlorophyll content and fluorescence parameters of Fo, Fm, and Fv/Fm in both cultivars and Pn in Yunyan2. Exogenous GB counteracted Cd-induced alterations of certain antioxidant enzymes and nutrients uptake, e.g., the depressed Cd-induced increase of superoxide dismutase (SOD) and peroxidase (POD) activities, but significantly elevated the depressed catalase (CAT) and ascorbate peroxidase (APX) activities. The results indicate that alleviated Cd toxicity by GB application is related to the reduced Cd uptake and MDA accumulation, balanced nutrients and antioxidant enzyme activities, improved PSII, and integrated ultrastructure in tobacco plants.
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Affiliation(s)
- Xiaoyan He
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China.
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China.
| | - Marvin E A Richmond
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China.
| | - Darron V Williams
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China.
| | - Weite Zheng
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China.
| | - Feibo Wu
- Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China.
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Guarino C, Zuzolo D, Marziano M, Baiamonte G, Morra L, Benotti D, Gresia D, Stacul ER, Cicchella D, Sciarrillo R. Identification of native-metal tolerant plant species in situ: Environmental implications and functional traits. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:3156-3167. [PMID: 30373092 DOI: 10.1016/j.scitotenv.2018.09.343] [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: 06/25/2018] [Revised: 09/24/2018] [Accepted: 09/27/2018] [Indexed: 06/08/2023]
Abstract
A study was undertaken to identify suitable native plants for the phytoremediation of the second largest integrated steelworks in Italy (Bagnoli brownfield site). A phytoecological survey allowed us to identify 139 plant taxa belonging to 58 different families. The most represented families were in the decreasing order Poaceae > Fabaceae > Asteraceae > Apiaceae. The biological spectrum showed a predominance of Therophytes > Hemycriptophytes > Phanerophyte. Seventy-six sites were selected on the presence of colonist's plants and vegetation assemblage patterns. At each site, roots and leaves of the dominant plant and rhizosphere soils were sampled. Total content of metal(loid)s in soils and plant parts were determined. Agronomic soil parameters were studied. Anthropogenic sourced metal(loid)s were discriminated from geochemical ones, and plant metal(loid) accumulation and translocation efficiency were evaluated. The role of many native plant species in terms of TEs phytomanagement strategy was recognizable inside the investigated area. According to this survey of structural plant diversity, several combinations between plants and microorganisms are being further investigated to identify relevant biological system for the phytomanagement of this contaminated area.
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Affiliation(s)
- Carmine Guarino
- Department of Science and Technology, University of Sannio, Via Port'Arsa 11 I, Benevento, Italy.
| | - Daniela Zuzolo
- Department of Science and Technology, University of Sannio, Via Port'Arsa 11 I, Benevento, Italy
| | - Mario Marziano
- Department of Science and Technology, University of Sannio, Via Port'Arsa 11 I, Benevento, Italy
| | - Giuseppe Baiamonte
- Department of Science and Technology, University of Sannio, Via Port'Arsa 11 I, Benevento, Italy
| | | | | | | | | | - Domenico Cicchella
- Department of Science and Technology, University of Sannio, Via Port'Arsa 11 I, Benevento, Italy
| | - Rosaria Sciarrillo
- Department of Science and Technology, University of Sannio, Via Port'Arsa 11 I, Benevento, Italy
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Bahmani R, Kim D, Na J, Hwang S. Expression of the Tobacco Non-symbiotic Class 1 Hemoglobin Gene Hb1 Reduces Cadmium Levels by Modulating Cd Transporter Expression Through Decreasing Nitric Oxide and ROS Level in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2019; 10:201. [PMID: 30853969 PMCID: PMC6396062 DOI: 10.3389/fpls.2019.00201] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 02/06/2019] [Indexed: 05/03/2023]
Abstract
Hemoglobin (Hb) proteins are ubiquitous in plants, and non-symbiotic class 1 hemoglobin (Hb1) is involved in various biotic and abiotic stress responses. Here, the expression of the tobacco (Nicotiana tabacum) hemoglobin gene NtHb1 in Arabidopsis (Arabidopsis thaliana) showed higher cadmium (Cd) tolerance and lower accumulations of Cd, nitric oxide (NO), and reactive oxygen species (ROS) like hydrogen peroxide (H2O2). NtHb1-expressing Arabidopsis exhibited a reduced induction of NO levels in response to Cd, suggesting scavenging of NO by Hb1. In addition, transgenic plants had reduced accumulation of ROS and increased activities of antioxidative enzymes (catalase, superoxide dismutase, and glutathione reductase) in response to Cd. While the expression of the Cd exporters ABC transporter (PDR8) and Ca2+/H+ exchangers (CAXs) was increased, that of the Cd importers iron responsive transporter 1 (IRT1) and P-type 2B Ca2+ ATPase (ACA10) was reduced in response to Cd. When Col-0 plants were treated with the NO donor sodium nitroprusside (SNP) and H2O2, the expression pattern of Cd transporters (PDR8, CAX3, IRT1, and ACA10) was reversed, suggesting that NtHb1 expression decreased the Cd level by regulating the expression of Cd transporters via decreased NO and ROS. Correspondingly, NtHb1-expressing Arabidopsis showed increased Cd export. In summary, the expression of NtHb1 reduces Cd levels by regulating Cd transporter expression via decreased NO and ROS levels in Arabidopsis.
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Affiliation(s)
- Ramin Bahmani
- Department of Molecular Biology, Sejong University, Seoul, South Korea
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, South Korea
- Plant Engineering Research Institute, Sejong University, Seoul, South Korea
| | - DongGwan Kim
- Department of Molecular Biology, Sejong University, Seoul, South Korea
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, South Korea
- Plant Engineering Research Institute, Sejong University, Seoul, South Korea
| | - JongDuk Na
- Department of Molecular Biology, Sejong University, Seoul, South Korea
| | - Seongbin Hwang
- Department of Molecular Biology, Sejong University, Seoul, South Korea
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, South Korea
- Plant Engineering Research Institute, Sejong University, Seoul, South Korea
- *Correspondence: Seongbin Hwang,
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Chi Y, Li F, Tam NFY, Liu C, Ouyang Y, Qi X, Li WC, Ye Z. Variations in grain cadmium and arsenic concentrations and screening for stable low-accumulating rice cultivars from multi-environment trials. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 643:1314-1324. [PMID: 30189548 DOI: 10.1016/j.scitotenv.2018.06.288] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/21/2018] [Accepted: 06/23/2018] [Indexed: 06/08/2023]
Abstract
In order to help mitigate widespread cadmium (Cd) and arsenic (As) co-contamination in paddy soils in China, screening and breeding of low-accumulating rice (Oryza sativa L.) cultivars (excluders) have been widely adopted. However, the performance of rice cultivars for grain Cd and As accumulation may vary in different growing environments. The inability to identify stable low-accumulating cultivars has largely hindered their application. In this study, 51 rice cultivars were evaluated at four Cd- and As-contaminated paddy sites in two crop seasons in northern Guangdong Province, China. The aim was to investigate the effects of cultivar, environment and their interactions in determining grain Cd and As concentrations, and so to identify stable low-accumulating cultivars. Results showed that environment effects dominated the Cd and As concentrations in rice grains, explaining 87% of the total variations. The crop season played a vital role; compared to early season, grain Cd levels increased and As levels lowered significantly in late season. Large variations in grain Cd, total As, inorganic As concentrations and the percentage of inorganic As were observed between different cultivars. Conventional japonica cultivars exhibited lower Cd levels but higher As levels in the grains than did indica cultivars. The cultivar × environment interaction (CEI) was significant, and its importance was comparable to the cultivar effect. By measuring and interpreting such an interaction, stable Cd and As excluder cultivars were identified based upon the yield, grain Cd and As levels as well as the stabilities of cultivars across the trial environments. Two stable Cd and As co-excluders were found among the hybrid indica cultivars. These results demonstrated that the variations in grain Cd and As concentrations could mainly be attributed to the environment effects and cultivar selection practices should include the analysis of CEI to identify stable low-accumulating rice cultivars.
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Affiliation(s)
- Yihan Chi
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Fangbai Li
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China.
| | - Nora Fung-Yee Tam
- Department of Chemistry, State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region.
| | - Chuanping Liu
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China.
| | - Yun Ouyang
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiaoli Qi
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Wai Chin Li
- Department of Science and Environmental Studies, the Education University of Hong Kong, Hong Kong Special Administrative Region.
| | - Zhihong Ye
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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40
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Chen X, Ouyang Y, Fan Y, Qiu B, Zhang G, Zeng F. The pathway of transmembrane cadmium influx via calcium-permeable channels and its spatial characteristics along rice root. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:5279-5291. [PMID: 30099559 PMCID: PMC6184580 DOI: 10.1093/jxb/ery293] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 08/02/2018] [Indexed: 05/19/2023]
Abstract
To develop elite crops with low cadmium (Cd), a fundamental understanding of the mechanism of Cd uptake by crop roots is necessary. Here, a new mechanism for Cd2+ entry into rice root cells was investigated. The results showed that Cd2+ influx in rice roots exhibited spatially and temporally dynamic patterns. There was a clear longitudinal variation in Cd uptake along rice roots, with the root tip showing much higher Cd2+ influx and concentration than the root mature zone, which might be due to the much higher expression of the well-known Cd transporter genes OsIRT1, OsNRAMP1, OsNRAMP5, and OsZIP1 in the root tip. Both the net Cd2+ influx and the uptake of Cd in rice roots were highly inhibited by ion channel blockers Gd3+ and TEA+, supplementation of Ca2+ and K+, and the plasma membrane H+-ATPase inhibitor vanadate, with Gd3+ and Ca2+ showing the most inhibitory effects. Furthermore, Ca2+- or Gd3+-induced reduction in Cd2+ influx and Cd uptake did not coincide with the expression of Cd transporter genes, but with that of two Ca channel genes, OsAAN4 and OsGLR3.4. These results indicate that Cd transporters are in part responsible for Cd2+ entry into rice root, and provide a new perspective that the Ca channels OsAAN4 and OsGLR3.4 might play an important role in rice root Cd uptake.
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Affiliation(s)
- Xiaohui Chen
- Institute of Crop Science, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Younan Ouyang
- China National Rice Research Institute, Hangzhou, China
| | - Yicong Fan
- Institute of Crop Science, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Boyin Qiu
- Key Laboratory of Crop Breeding in South Zhejiang, Wenzhou Academy of Agricultural Science, Wenzhou Vocational College of Science and Technology, Wenzhou, China
| | - Guoping Zhang
- Institute of Crop Science, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Fanrong Zeng
- Institute of Crop Science, Zijingang Campus, Zhejiang University, Hangzhou, China
- Correspondence:
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Yang LP, Zhu J, Wang P, Zeng J, Tan R, Yang YZ, Liu ZM. Effect of Cd on growth, physiological response, Cd subcellular distribution and chemical forms of Koelreuteria paniculata. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 160:10-18. [PMID: 29783107 DOI: 10.1016/j.ecoenv.2018.05.026] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/09/2018] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
Koelreuteria paniculata were cultivated in nutrient solution with different concentrations of Cd (0, 50, 150, 250 and 500 µM) and sampled after 90 days. The resistance, translocation, accumulation and stress responses in Koelreuteria paniculata were investigated by hydroponic experiments. The results showed that Koelreuteria paniculata is an efficient Cd excluder that can tolerate high concentrations of Cd (up to 150-250 µM of Cd). The concentration of Cd never exceeds 5 ppm in leaves and 10 ppm in roots. The high concentration of Cd (≥ 250 µM) had a toxic effect on K. paniculata and significantly restricted the plant growth. The accumulation ability of Cd by different plant tissues followed the sequence of roots > leaves > stems. The bioconcentration factors and translocation factors both were less than 1. Cd has the highest content in the cell wall and is migrated to soluble fractions and organelles at high concentrations. Undissolved Cd phosphate, pectates and protein-bound Cd were the predominant forms. The low concentration of Cd (≤150 µM) promoted the synthesis of soluble proteins, AsA and GSH, while high concentration of Cd clearly inhibited the physiological and biochemical process, caused membrane lipid peroxidation and severe membrane damages, and increased MDA and H2O2 contents. POD, CAT and SOD exhibited positive and effective responses to low concentration Cd stress, but could not remove the toxicity caused by high concentration Cd stress. The content of IAA, GA and ZT decreased and ABA content was significantly increased under high-concentration Cd stress.
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Affiliation(s)
- Lan Peng Yang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China
| | - Jian Zhu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China.
| | - Ping Wang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China.
| | - Jing Zeng
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, PR China
| | - Rong Tan
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China
| | - Yu Zhong Yang
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China
| | - Zhi Ming Liu
- Department of Biology, Eastern New Mexico University, Portales, NM 88130, USA
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Guo J, Zhou R, Ren X, Jia H, Hua L, Xu H, Lv X, Zhao J, Wei T. Effects of salicylic acid, Epi-brassinolide and calcium on stress alleviation and Cd accumulation in tomato plants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 157:491-496. [PMID: 29685680 DOI: 10.1016/j.ecoenv.2018.04.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 04/02/2018] [Accepted: 04/04/2018] [Indexed: 05/13/2023]
Abstract
Salicylic acid (SA), Epi-brassinolide (EBL) and calcium (Ca) play crucial roles in plant development and mediate plant response to biotic and abiotic stress. This study was aimed to investigate the possible mediatory role of SA, EBL, Ca or their combination in protecting tomato plants from cadmium (Cd) toxicity. According to the results, Cd stress resulted in a significant reduction of plant dry mass, photosynthetic pigment content as well as photosynthetic rate. Exogenous application of SA decreased the malondialdehyde (MDA) level by 39.27% and increased catalase (CAT) activity by 81.17%. SA and EBL treatment significantly increased chlorophyll a (Chl a), chlorophyll b (Chl b) content, photosynthetic rate (Pn) as well as water use efficiency (WUE). SA+EBL (1:1)/Ca+SA+EBL (1:1:1) treatment obviously alleviated Cd-induced growth inhibition, the dry mass of different tomato organs were significantly increased (p < 0.05). Especially in Ca+SA+EBL treated plants, the dry mass of roots, stems and leaves increased by 141.18%, 128.57% and 118.52%, respectively. Besides, SA+EBL and Ca+SA+EBL treatments reduced the MDA level, but increased photosynthetic pigment concentration and photosynthetic efficiency. CAT activity was increased by 62.92% in Ca+SA+EBL treated plants, the WUE was increased by 557.76% in SA+EBL pretreated plants. Moreover, exogenous application of SA, SA+EBL and Ca+SA+EBL significantly decreased Cd accumulation in tomato organs (p < 0.05) compared with Cd-stressed plants. Taken together, our results indicated that exogenous application of SA, EBL and Ca individually or in combination could alleviate Cd toxicity in tomato plants, although the extent varies.
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Affiliation(s)
- JunKang Guo
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China.
| | - Ran Zhou
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - XinHao Ren
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - HongLei Jia
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Li Hua
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - HuiHui Xu
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Xin Lv
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Jin Zhao
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Ting Wei
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China.
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Zhang X, Shao J, Chen A, Shang C, Hu X, Luo S, Lei M, Peng L, Zeng Q. Effects of cadmium on calcium homeostasis in the white-rot fungus Phanerochaete chrysosporium. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 157:95-101. [PMID: 29609109 DOI: 10.1016/j.ecoenv.2018.03.071] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/23/2018] [Accepted: 03/25/2018] [Indexed: 06/08/2023]
Abstract
Due to the widespread application of white-rot fungi for the treatment of pollutants, it's crucial to exploit the special effects of pollutants on the microbes. Here, we studied the effects of cadmium on calcium homeostasis in the most studied white-rot fungus Phanerochaete chrysosporium. The response of P. chrysosporium to cadmium stress is concentration-dependent. A high concentration of cadmium caused the release of calcium from P. chrysosporium, while a hormesis effect was observed at a lower cadmium concentration (10 μM), which resulted in a significant increase in calcium uptake and reversed the decrease in cell viability. Calcium (50 μM) promoted cell viability (127.2% of control), which reflects that calcium can protect P. chrysosporium from environmental stress. Real-time changes in the Ca2+ and Cd2+ fluxes of P. chrysosporium were quantified using the noninvasive microtest technique. Ca2+ influx decreased significantly under cadmium exposure, and the Ca2+ channel was involved in Ca2+ and Cd2+ influx. The cadmium and/or calcium uptake results coupled with the real-time Ca2+ and Cd2+ influxes microscale signatures can enhance our knowledge of the homeostasis of P. chrysosporium with respect to cadmium stress, which may provide useful information for improving the bioremediation process.
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Affiliation(s)
- Xiaoxiao Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Jihai Shao
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Anwei Chen
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China.
| | - Cui Shang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Xinjiang Hu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China
| | - Si Luo
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Ming Lei
- 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
| | - Qingru Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
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Dutta S, Mitra M, Agarwal P, Mahapatra K, De S, Sett U, Roy S. Oxidative and genotoxic damages in plants in response to heavy metal stress and maintenance of genome stability. PLANT SIGNALING & BEHAVIOR 2018; 13:e1460048. [PMID: 29621424 PMCID: PMC6149466 DOI: 10.1080/15592324.2018.1460048] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 03/28/2018] [Indexed: 05/17/2023]
Abstract
Plants, being sessile in nature, are constantly exposed to various environmental stresses, such as solar UV radiations, soil salinity, drought and desiccation, rehydration, low and high temperatures and other vast array of air and soil borne chemicals, industrial waste products, metals and metalloids. These agents, either directly or indirectly via the induction of oxidative stress and overproduction of reactive oxygen species (ROS), frequently perturb the chemical or physical structures of DNA and induce both cytotoxic or genotoxic stresses. Such condition, in turn, leads to genome instability and thus eventually severely affecting plant health and crop yield. With the growing industrialization process and non-judicious use of chemical fertilizers, the heavy metal mediated chemical toxicity has become one of the major environmental threats for the plants around the globe. The heavy metal ions cause damage to the structural, enzymatic and non-enzymatic components of plant cell, often resulting in loss of cell viability, thus negatively impacting plant growth and development. Plants have also evolved with an extensive and highly efficient mechanism to respond and adapt under such heavy metal toxicity mediated stress conditions. In addition to morpho-anatomical, hormonal and biochemical responses, at the molecular level, plants respond to heavy metal stress induced oxidative and genotoxic damage via the rapid change in the expression of the responsive genes at the transcriptional level. Various families of transcription factors play crucial role in triggering such responses. Apart from transcriptional response, epigenetic modifications have also been found to be essential for maintenance of plant genome stability under genotoxic stress. This review represents a comprehensive survey of recent advances in our understanding of plant responses to heavy metal mediated toxicity in general with particular emphasis on the transcriptional and epigenetic responses and highlights the importance of understanding the potential targets in the associated pathways for improved stress tolerance in crops.
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Affiliation(s)
- Subhajit Dutta
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Mehali Mitra
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Puja Agarwal
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Kalyan Mahapatra
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Sayanti De
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Upasana Sett
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Sujit Roy
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
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45
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Corso M, Schvartzman MS, Guzzo F, Souard F, Malkowski E, Hanikenne M, Verbruggen N. Contrasting cadmium resistance strategies in two metallicolous populations of Arabidopsis halleri. THE NEW PHYTOLOGIST 2018; 218:283-297. [PMID: 29292826 DOI: 10.1111/nph.14948] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/05/2017] [Indexed: 05/10/2023]
Abstract
While cadmium (Cd) tolerance is a constitutive trait in the Arabidopsis halleri species, Cd accumulation is highly variable. Recent adaptation to anthropogenic metal stress has occurred independently within the genetic units of A. halleri and the evolution of different mechanisms involved in Cd tolerance and accumulation has been suggested. To gain a better understanding of the mechanisms underlying Cd tolerance and accumulation in A. halleri, ionomic inductively coupled plasma mass spectrometry (ICP-MS), transcriptomic (RNA sequencing) and metabolomic (high-performance liquid chromatography-mass spectrometry) profiles were analysed in two A. halleri metallicolous populations from different genetic units (PL22 from Poland and I16 from Italy). The PL22 and I16 populations were both hypertolerant to Cd, but PL22 hyperaccumulated Cd while I16 behaved as an excluder both in situ and when grown hydroponically. The observed hyperaccumulator vs excluder behaviours were paralleled by large differences in the expression profiles of transporter genes. Flavonoid-related transcripts and metabolites were strikingly more abundant in PL22 than in I16 shoots. The role of novel A. halleri candidate genes possibly involved in Cd hyperaccumulation or exclusion was supported by the study of corresponding A. thaliana knockout mutants. Taken together, our results are suggestive of the evolution of divergent strategies for Cd uptake, transport and detoxification in different genetic units of A. halleri.
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Affiliation(s)
- Massimiliano Corso
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - M Sol Schvartzman
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, B-4000, Liège, Belgium
| | - Flavia Guzzo
- Department of Biotechnology, University of Verona, 37134, Verona, Italy
| | - Florence Souard
- Département de Pharmacochimie Moléculaire, CNRS UMR5063, University Grenoble Alpes, 38400, St Martin d'Hères, France
- Laboratoire de Pharmacognosie, de Bromatologie et de Nutrition Humaine, Université Libre de Bruxelles, 1050, Brussels, Belgium
| | - Eugeniusz Malkowski
- Department of Plant Physiology, Faculty of Biology and Environmental Protection, University of Silesia in Katowice, 40-032, Katowice, Poland
| | - Marc Hanikenne
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, B-4000, Liège, Belgium
| | - Nathalie Verbruggen
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050, Brussels, Belgium
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46
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Anwar S, Khan S, Ashraf MY, Noman A, Zafar S, Liu L, Ullah S, Fahad S. Impact of chelator-induced phytoextraction of cadmium on yield and ionic uptake of maize. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:505-513. [PMID: 27819494 DOI: 10.1080/15226514.2016.1254153] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Enhanced phytoextraction uses soil chelators to increase the bioavailability of heavy metals. This study tested the effectiveness of ethylenediaminetetraacetic acid (EDTA) and citric acid in enhancing cadmium (Cd) phytoextraction and their effects on the growth, yield, and ionic uptake of maize (Zea mays). Maize seeds of two cultivars were sown in pots treated with 15 (Cd15) or 30 mg Cd kg-1 soil (Cd30). EDTA and citric acid at 0.5 g kg-1 each were applied 2 weeks after germination. Results demonstrated that the growth, yield per plant, and total grain weight were reduced by exposure to Cd. EDTA increased the uptake of Cd in shoots, roots, and grains of both maize varieties. Citric acid did not enhance the uptake of Cd, rather it ameliorated the toxicity of Cd, as shown by increased shoot and root length and biomass. Cadmium toxicity reduced the number of grains, rather than the grain size. The maize cultivar Sahiwal-2002 extracted 1.6% and 3.6% of Cd from soil in both Cd+ EDTA treatments. Hence, our study implies that maize can be used to successfully phytoremediate Cd from soil using EDTA, without reducing plant biomass or yield.
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Affiliation(s)
- Sumera Anwar
- a College of Plant Science and Technology , Huazhong Agriculture University , Wuhan , Hubei , China
- b Soil and Environmental Science Division , Nuclear Institutes for Agriculture and Biology (NIAB) , Faisalabad , Pakistan
| | - Shahbaz Khan
- a College of Plant Science and Technology , Huazhong Agriculture University , Wuhan , Hubei , China
| | - M Yasin Ashraf
- b Soil and Environmental Science Division , Nuclear Institutes for Agriculture and Biology (NIAB) , Faisalabad , Pakistan
| | - Ali Noman
- c Department of Botany , Government College University , Faisalabad , Pakistan
| | - Sara Zafar
- c Department of Botany , Government College University , Faisalabad , Pakistan
| | - Lijun Liu
- a College of Plant Science and Technology , Huazhong Agriculture University , Wuhan , Hubei , China
| | - Sana Ullah
- a College of Plant Science and Technology , Huazhong Agriculture University , Wuhan , Hubei , China
| | - Shah Fahad
- a College of Plant Science and Technology , Huazhong Agriculture University , Wuhan , Hubei , China
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Wali M, Martos S, Pérez-Martín L, Abdelly C, Ghnaya T, Poschenrieder C, Gunsé B. Cadmium hampers salt tolerance of Sesuvium portulacastrum. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 115:390-399. [PMID: 28432978 DOI: 10.1016/j.plaphy.2017.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 04/10/2017] [Accepted: 04/10/2017] [Indexed: 05/01/2023]
Abstract
It is well known that salinity reduces cadmium toxicity in halophytes. However, the possible interference of Cd with the mechanisms of salt tolerance is poorly explored. The aim of this study was to see whether Cd affects salt tolerance mechanisms in the halophyte Sesuvium portulacastrum. S. portulacastrum plants obtained from cuttings were grown in hydroponics for 3 weeks and then exposed to low (0.09 mM) or moderate (200 mM) NaCl concentrations, alone or in combination with 25 μM CdCl2. Microscopy observation revealed two strategies of salt tolerance: euhalophytism and secretion of salt by bladder cells. Cadmium exposure hardly influenced the total leaf Na+ concentrations. However, Cd supply delayed the salt-induced upregulation of AHA1 (plasma membrane H+-ATPase 1) and SOS1 (plasma membrane Na+ transporter "Salt Overly Sensitive 1"), genes that are essential for salt tolerance. Moreover, Cd induced the activation of BADH, coding for betaine aldehyde dehydrogenase, indicating enhanced osmotic stress due to Cd. Sodium-green fluorescence in protoplasts from plants grown with low or high NaCl, alone or in combination with Cd, revealed higher Na+ concentrations in the cytoplasm of Cd-exposed plants. Taken together the results indicate interference of Cd with salt tolerance mechanisms in S. portulacastrum. This may have consequences for the efficient use of halophytes in phytoremediation of Cd-contaminated saline soils.
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Affiliation(s)
- Mariem Wali
- Unitat de Fisiologia Vegetal, Dep. BABVE, Facultat Biociences, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain; Laboratoire des Plantes Extremophiles, Centre de Biotechnologies de la Technopole de Borj-Cedria, BP 901, Hammam Lif 2050, Tunisia
| | - Soledad Martos
- Unitat de Fisiologia Vegetal, Dep. BABVE, Facultat Biociences, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain.
| | - Laura Pérez-Martín
- Unitat de Fisiologia Vegetal, Dep. BABVE, Facultat Biociences, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain
| | - Chedly Abdelly
- Laboratoire des Plantes Extremophiles, Centre de Biotechnologies de la Technopole de Borj-Cedria, BP 901, Hammam Lif 2050, Tunisia
| | - Tahar Ghnaya
- Laboratoire des Plantes Extremophiles, Centre de Biotechnologies de la Technopole de Borj-Cedria, BP 901, Hammam Lif 2050, Tunisia
| | - Charlotte Poschenrieder
- Unitat de Fisiologia Vegetal, Dep. BABVE, Facultat Biociences, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain
| | - Benet Gunsé
- Unitat de Fisiologia Vegetal, Dep. BABVE, Facultat Biociences, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Cerdanyola del Vallès), Spain
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48
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Liu Y, Zhang C, Zhao Y, Sun S, Liu Z. Effects of growing seasons and genotypes on the accumulation of cadmium and mineral nutrients in rice grown in cadmium contaminated soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 579:1282-1288. [PMID: 27908623 DOI: 10.1016/j.scitotenv.2016.11.115] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 11/17/2016] [Accepted: 11/17/2016] [Indexed: 06/06/2023]
Abstract
Heavy metals naturally occur in soil but their concentrations may be changed by seasonal rainfall under double-rice cropping system. The field trials at three sites, which represent low, medium and high cadmium (Cd) content in soil, revealed significant genotypic and environmental variations in grain Cd concentrations. Most cultivars in late rice at three sites produced grains with Cd content over the maximum permissible concentration (MPC) 0.20mgkg-1. However, grain Cd content in early rice was over MPC only at high Cd site. When planted at same site, late rice showed remarkably higher content of Cd as well as K, Mg, Fe and Mn than that in early rice in both grains and rachises. Content of Ni, Pb and Cr was generally in the safe range and it was determined by the interactions between genotypes and environmental factors. Element concentrations in rachises were about 2-10 times higher than those in grains, depending on element species, cultivars, locations and seasons. Low-Cd-accumulation cultivars generally displayed both lower Cd content in rachis and lower Cd transportation ratio from rachises to grains than those of high-Cd-accumulation cultivars. There was a significant and positive correlation between Cd and Mn concentrations in grains. The most important factor that causes great variation in Cd accumulation in rachises and grains between early and later rice is water contents and levels in paddy soils mainly caused by different rainfall amount. Inhibiting Cd accumulation in rachises and Cd transportation from rachises to grains could efficiently decrease Cd content in rice grains produced in contaminated soil.
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Affiliation(s)
- Yang Liu
- Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China; College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin, 300384, China
| | - Changbo Zhang
- Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
| | - Yanling Zhao
- Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
| | - Shoujun Sun
- College of Agronomy & Resources and Environment, Tianjin Agricultural University, Tianjin, 300384, China
| | - Zhongqi Liu
- Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China.
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49
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Luo ZB, He J, Polle A, Rennenberg H. Heavy metal accumulation and signal transduction in herbaceous and woody plants: Paving the way for enhancing phytoremediation efficiency. Biotechnol Adv 2016; 34:1131-1148. [DOI: 10.1016/j.biotechadv.2016.07.003] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 05/24/2016] [Accepted: 07/12/2016] [Indexed: 11/26/2022]
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50
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Romè C, Huang XY, Danku J, Salt DE, Sebastiani L. Expression of specific genes involved in Cd uptake, translocation, vacuolar compartmentalisation and recycling in Populus alba Villafranca clone. JOURNAL OF PLANT PHYSIOLOGY 2016; 202:83-91. [PMID: 27467553 DOI: 10.1016/j.jplph.2016.07.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 07/07/2016] [Accepted: 07/10/2016] [Indexed: 05/15/2023]
Abstract
Cadmium (Cd) is a heavy metal toxic to humans and its occurrence in soils represents a significant environmental problem. Poplar trees may provide one possible option to help remove Cd contamination from soil. However, before this is practicable, the ability of poplar to accumulate Cd needs to be enhanced. A better understanding of the genes involved in Cd accumulation in poplar would help to achieve this goal. Here, we monitored the expression of genes known to be involved in Cd uptake, accumulation and translocation from other species, in order to provide information on their potential role in Cd accumulation in poplar. Cd concentration in poplar was significantly higher in roots than in stem and leaves in Cd treated plants. Expression of the poplar homologues of IRT1, NRAMP and OPT3 was initially increased after exposure to Cd but reduced after longer term Cd exposure. Exposure to Cd also influenced the accumulation of Fe, Ca, Cu, Mg and Mn in poplar. In particular, Cd treated plants had a higher concentration of Fe, Ca, Cu, and Mg in leaves and stem compared to control plants after one day and one week of experiment; while in roots after one month Cd treated plants had a lower concentration of Mn, Fe, Cu, Co, and Mg.
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Affiliation(s)
- Chiara Romè
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, I-56127 Pisa, Italy
| | - Xin-Yuan Huang
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen AB24 3UU, United Kingdom
| | - John Danku
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen AB24 3UU, United Kingdom
| | - David E Salt
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen AB24 3UU, United Kingdom
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, I-56127 Pisa, Italy.
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