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Jiang P, Zhong X, Zhang X, You S, Liu J, Yu G. Effect of Mn on Cd 2+ uptake by protoplasts of the Cd/Mn hyperaccumulator Celosia argentea Linn. differs by treatment method. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108925. [PMID: 39002306 DOI: 10.1016/j.plaphy.2024.108925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 06/15/2024] [Accepted: 07/08/2024] [Indexed: 07/15/2024]
Abstract
The effect mechanism of Mn on Cd uptake by Celosia argentea was investigated via a series of hydroponics experiments. The results showed that different manganese treatments had different effects on Cd uptake by C. argentea. Mn pretreatment increased Cd uptake by root protoplasts at Cd concentrations (4 and 6 μM). Protoplasts reached peak Cd uptake rate at 6 μM Cd and 25 °C, with 67.71 ± 0.13 μM h-1 mL-1 in the control, and 77.99 ± 0.49 μM h-1 mL-1 in the 50 μM Mn pretreatment group. However, simultaneous treatment with Cd and Mn reduced the Cd2+ uptake by root protoplasts. This discrepancy may be attributed to the fact that cadmium and manganese share some transporters in root cells. The transcriptome analysis in roots revealed that ten genes (including ABCC, ABCA, ABCG, ABCB, ABC1, BZIP19, and ZIP5) were significantly upregulated in response to Mn stress (p < 0.05). These genes regulate the expression of transporters belonging to the ABC, and ZIP families, which may be involved in Cd uptake by root cells of C. argentea. Mn pretreatment upregulates the expression of Mn/Cd transporters, enhancing Cd uptake by root protoplasts. For the simultaneous treatment of Cd and Mn, inhibition of Cd uptake was due to the competition of the same transporters. These findings provide helpful insights for understanding the mechanism of Mn and Cd uptake in hyperaccumulators and give implications to improve the phytoremediation of Cd-contaminated soil by C. argentea.
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Affiliation(s)
- Pingping Jiang
- College of Earth Sciences, Guilin University of Technology, Guilin, 541004, China; Guangxi Key Laboratory of Exploration for Hidden Metallic Ore Deposits, Guilin, 541004, China
| | - Xia Zhong
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, 541004, China
| | - Xuehong Zhang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, 541004, China
| | - Shaohong You
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, 541004, China; Guangxi Science and Technology Normal University, Laibin, 546199, China.
| | - Jie Liu
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, 541004, China
| | - Guo Yu
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, 541004, China
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2
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Wang L, Gao Y, Han X, Li Z, Mou F, Bi J, Zu Y, Wang J. Appropriate supply of sulfur alleviates lead toxicity and stimulates its accumulation in hyperaccumulator Arabis alpina. CHEMOSPHERE 2024; 362:142646. [PMID: 38897324 DOI: 10.1016/j.chemosphere.2024.142646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 06/16/2024] [Accepted: 06/17/2024] [Indexed: 06/21/2024]
Abstract
Widespread lead (Pb) contamination of agricultural soils is a global issue stemming from human activities. The remediation of Pb-contaminated soils used for agricultural purposes is critically important to safeguard food crop safety. Despite the modulating effects of sulfur (S) on plant responses to toxic heavy metals, the ecological, physiological, and molecular mechanisms driving such modulation in the Pb hyperaccumulator Arabis alpina L. remain unclear. Here, we investigated the effects of five S concentrations (0, 50, 100, 150, and 200 mg kg-1) on A. alpina grown in Pb-contaminated soil from a lead-zinc mining area. Under S50 (i.e., 50 mg kg-1) and S100 treatments, the Pb concentration in both shoots and roots of A. alpina significantly decreased compared to the control (S0). Specifically, the S50 treatment significantly enhanced Pb accumulation, plant biomass, and plant height, indicating that low S applications facilitate Pb accumulation from the soil and alleviate Pb toxicity. Additionally, S50, S100, and S150 treatments significantly improved photosynthetic rate, stomatal conductance, and intercellular CO2 concentration in A. alpina. Transcriptomic analysis showed that S50 and S100 treatments increased the expression of the LHCA, LHCB, psa, and psb genes, which had a significant impact on photosynthetic efficiency. S50 and S100 boosted glutathione (GSH) levels in A. alpina roots, and the increased expression of GST gene enhanced tolerance to environmental stress. In summary, these results suggest that an appropriate supply of S (S50 and S100) not only alleviates Pb toxicity by enhancing plant biomass, height, photosynthetic features, and sulfur metabolites but also stimulates Pb accumulation in the hyperaccumulator A. alpina. Our study elucidated the specific concentrations of sulfur that optimally enhance both Pb accumulation and stress tolerance in the hyperaccumulator A. alpina, providing novel insights into the practical application of sulfur in phytoremediation strategies and advancing our understanding of the underlying molecular mechanisms.
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Affiliation(s)
- Lei Wang
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, People's Republic of China
| | - Yuxuan Gao
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, People's Republic of China
| | - Xiaohui Han
- Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, People's Republic of China
| | - Zuran Li
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, People's Republic of China
| | - Fengli Mou
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, People's Republic of China
| | - Jiayu Bi
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, People's Republic of China
| | - Yanqun Zu
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, People's Republic of China
| | - Jixiu Wang
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, People's Republic of China.
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Mittra PK, Rahman MA, Roy SK, Kwon SJ, Yun SH, Kun C, Zhou M, Katsube-Tanaka T, Shiraiwa T, Woo SH. Deciphering proteomic mechanisms explaining the role of glutathione as an aid in improving plant fitness and tolerance against cadmium-toxicity in Brassica napus L. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134262. [PMID: 38640678 DOI: 10.1016/j.jhazmat.2024.134262] [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: 01/05/2024] [Revised: 03/31/2024] [Accepted: 04/08/2024] [Indexed: 04/21/2024]
Abstract
Cadmium (Cd) hazard is a serious limitation to plants, soils and environments. Cd-toxicity causes stunted growth, chlorosis, necrosis, and plant yield loss. Thus, ecofriendly strategies with understanding of molecular mechanisms of Cd-tolerance in plants is highly demandable. The Cd-toxicity caused plant growth retardation, leaf chlorosis and cellular damages, where the glutathione (GSH) enhanced plant fitness and Cd-toxicity in Brassica through Cd accumulation and antioxidant defense. A high-throughput proteome approach screened 4947 proteins, wherein 370 were differently abundant, 164 were upregulated and 206 were downregulated. These proteins involved in energy and carbohydrate metabolism, CO2 assimilation and photosynthesis, signal transduction and protein metabolism, antioxidant defense response, heavy metal detoxification, cytoskeleton and cell wall structure, and plant development in Brassica. Interestingly, several key proteins including glutathione S-transferase F9 (A0A078GBY1), ATP sulfurylase 2 (A0A078GW82), cystine lyase CORI3 (A0A078FC13), ferredoxin-dependent glutamate synthase 1 (A0A078HXC0), glutaredoxin-C5 (A0A078ILU9), glutaredoxin-C2 (A0A078HHH4) actively involved in antioxidant defense and sulfur assimilation-mediated Cd detoxification process confirmed by their interactome analyses. These candidate proteins shared common gene networks associated with plant fitness, Cd-detoxification and tolerance in Brassica. The proteome insights may encourage breeders for enhancing multi-omics assisted Cd-tolerance in Brassica, and GSH-mediated hazard free oil seed crop production for global food security.
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Affiliation(s)
- Probir Kumar Mittra
- Department of Crop Science, Chungbuk National University, Cheong-ju 28644, Republic of Korea
| | - Md Atikur Rahman
- Grassland and Forage Division, Rural Development Administration, National Institute of Animal Science, Cheonan 31000, Republic of Korea
| | - Swapan Kumar Roy
- College of Agricultural Sciences, IUBAT-International University of Business Agriculture and Technology, 4 Embankment Drive Road, Sector 10 Uttara Model Town, Dhaka 1230, Bangladesh
| | - Soo-Jeong Kwon
- Department of Crop Science, Chungbuk National University, Cheong-ju 28644, Republic of Korea
| | - Sung Ho Yun
- Bio-Chemical Analysis Team, Center for Research Equipment, Korea Basic Science Institute, Ochang, Cheong-ju 28119, Republic of Korea
| | - Cho Kun
- Bio-Chemical Analysis Team, Center for Research Equipment, Korea Basic Science Institute, Ochang, Cheong-ju 28119, Republic of Korea
| | - Meiliang Zhou
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 South Zhongguancun Street, Haidian, Beijing 100081, China
| | - Tomoyuki Katsube-Tanaka
- Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Tatsuhiko Shiraiwa
- Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Sun-Hee Woo
- Department of Crop Science, Chungbuk National University, Cheong-ju 28644, Republic of Korea.
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4
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Kennedy V, Kaszecki E, Donaldson ME, Saville BJ. The impact of elevated sulfur and nitrogen levels on cadmium tolerance in Euglena species. Sci Rep 2024; 14:11734. [PMID: 38777815 PMCID: PMC11111685 DOI: 10.1038/s41598-024-61964-w] [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: 09/30/2023] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
Heavy metal (HM) pollution threatens human and ecosystem health. Current methods for remediating water contaminated with HMs are expensive and have limited effect. Therefore, bioremediation is being investigated as an environmentally and economically viable alternative. Freshwater protists Euglena gracilis and Euglena mutabilis were investigated for their tolerance to cadmium (Cd). A greater increase in cell numbers under Cd stress was noted for E. mutabilis but only E. gracilis showed an increase in Cd tolerance following pre-treatment with elevated concentrations of S or N. To gain insight regarding the nature of the increased tolerance RNA-sequencing was carried out on E. gracilis. This revealed transcript level changes among pretreated cells, and additional differences among cells exposed to CdCl2. Gene ontology (GO) enrichment analysis reflected changes in S and N metabolism, transmembrane transport, stress response, and physiological processes related to metal binding. Identifying these changes enhances our understanding of how these organisms adapt to HM polluted environments and allows us to target development of future pre-treatments to enhance the use of E. gracilis in bioremediation relating to heavy metals.
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Affiliation(s)
- Victoria Kennedy
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada
| | - Emma Kaszecki
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada
| | - Michael E Donaldson
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada
- Forensic Science Department, Trent University, Peterborough, ON, Canada
| | - Barry J Saville
- Environmental and Life Sciences Graduate Program, Trent University, Peterborough, ON, Canada.
- Forensic Science Department, Trent University, Peterborough, ON, Canada.
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Shen C, Huang B, Hu L, Yuan H, Huang Y, Wang Y, Sun Y, Li Y, Zhang J, Xin J. Comparative transcriptome analysis and Arabidopsis thaliana overexpression reveal key genes associated with cadmium transport and distribution in root of two Capsicum annuum cultivars. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133365. [PMID: 38163407 DOI: 10.1016/j.jhazmat.2023.133365] [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: 10/29/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
The molecular mechanisms underlying high and low cadmium (Cd) accumulation in hot pepper cultivars remain unclear. In this study, comparative transcriptome analysis of root between high-Cd (J) and low-Cd (Z) cultivars was conducted under hydroponic cultivation with 0 and 0.4 mg/L Cd, respectively. The results showed that J enhanced the root uptake of Cd by elevating the expression of Nramp5 and counteracting Cd toxicity by increasing the expression of genes, such as NIR1, GLN1, and IAA9. Z reduced Cd accumulation by enhancing the cell wall lignin synthesis genes PAL, COMT, 4CL, LAC, and POD and the Cd transporters ABC, MTP1, and DTX1. Elevated expression of genes related to sulfur metabolism was observed in Z, potentially contributing to its ability to detoxify Cd. To investigate the function of CaCOMT1, an Arabidopsis thaliana overexpression line (OE-CaCOMT1) was constructed. The results revealed that OE-CaCOMT1 drastically increased the lignin content by 38-42% and reduced the translocation of Cd to the aboveground parts by 32%. This study provides comprehensive insights into the mechanisms underlying Cd accumulation in hot pepper cultivars using transcriptome analysis. Moreover, this study elucidates the critical function of CaCOMT1, providing a theoretical foundation for the production of low-Cd vegetables for food safety.
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Affiliation(s)
- Chuang Shen
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Baifei Huang
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Lu Hu
- Hunan Huanbaoqiao Ecology and Environment Engineering Co., Ltd., Changsha 410221, China
| | - Haiwei Yuan
- Hunan Huanbaoqiao Ecology and Environment Engineering Co., Ltd., Changsha 410221, China
| | - Yingying Huang
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Yanbin Wang
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Yingfang Sun
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Yi Li
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Jirong Zhang
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Junliang Xin
- School of Chemical and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China.
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6
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Dong Q, Chen M, Yu C, Zhang Y, Zha L, Kakumyan P, Yang H, Zhao Y. Combined Proteomic and Metabolomic Analyses Reveal the Comprehensive Regulation of Stropharia rugosoannulata Mycelia Exposed to Cadmium Stress. J Fungi (Basel) 2024; 10:134. [PMID: 38392806 PMCID: PMC10890358 DOI: 10.3390/jof10020134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/04/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
The potential of Stropharia rugosoannulata as a microbial remediation material for cadmium (Cd)-contaminated soil lies in its capacity to absorb and accumulate Cd in its mycelia. This study utilized the TMT and LC-MS techniques to conduct integrated proteomic and metabolomic analyses with the aim of investigating the mycelial response mechanisms of S. rugosoannulata under low- and high-Cd stresses. The results revealed that mycelia employed a proactive defense mechanism to maintain their physiological functions, leading to reduced sensitivity to low-Cd stress. The ability of mycelia to withstand high levels of Cd stress was influenced primarily by the comprehensive regulation of six metabolic pathways, which led to a harmonious balance between nitrogen and carbohydrate metabolism and to reductions in oxidative stress and growth inhibition caused by Cd. The results provide valuable insights into the molecular mechanisms involved in the response of S. rugosoannulata mycelia to Cd stress.
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Affiliation(s)
- Qin Dong
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Mingjie Chen
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Changxia Yu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Yaru Zhang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Lei Zha
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Pattana Kakumyan
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Huanling Yang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Yan Zhao
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
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Yao A, Yang J, Liu Y, Su G, Zhao M, Wang S, Tang Y, Qiu R. Mitigation effects of foliar supply of different sulfur forms on uptake, translocation and grain accumulation of Cd and As by paddy rice on basis of liming. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167338. [PMID: 37748603 DOI: 10.1016/j.scitotenv.2023.167338] [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: 05/29/2023] [Revised: 09/17/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Abstract
Co-contamination of Cd and As in strongly acidic paddy soil has posed great challenges for remediation practice due to their distinct properties. Liming is a necessary but inadequate measure for normal growth of paddy rice and for Cd and As remediation in strongly acidic paddy soils rich in iron minerals. A greenhouse rice pot cultivation experiment was conducted to explore the efficiency and mechanisms of how foliar supply of different sulfur forms (K2S, K2SO4) could further mediate the uptake, translocation and grain accumulation of Cd and As by paddy rice on basis of liming. Results showed that compared to liming alone (CK), co-application of liming and foliar supply of K2S (L + FK2S) significantly reduced contents of Cd and As in brown rice by 44.4 % and 24.7 %, respectively. Contrastingly, co-application of liming and foliar supply of K2SO4 (L + FK2SO4) decreased Cd content of brown rice by 55.5 %, but had no effect on As content. Foliar supply of K2S and K2SO4 dramatically facilitated Cd upward transfer from roots to shoots by enhancing root Cd transfer from cell wall into trophoplast. On the other hand, both sulfur forms remarkably elevated sulfur contents in leaves and significantly inhibited Cd translocation from leaves to grain by enhancing vacuolar sequestration of Cd in leaves. Compared to CK and L + FK2SO4 treatment, it was by enhancing glutathione synthesis, cell wall deposition in roots and vacuolar sequestration of As in leaves that L + FK2S showed greater inhibiting effects on transfer of As from roots, stems and leaves to grain. Foliar supply of either sulfate or sulfide could efficiently decrease grain Cd of paddy rice, but only foliar supply of sulfide is effective in reducing grain As.
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Affiliation(s)
- Aijun Yao
- School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Jingliu Yang
- School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
| | - Ying Liu
- School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
| | - Guangquan Su
- School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
| | - Man Zhao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Lab for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510006, China
| | - Shizhong Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Lab for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yetao Tang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Lab for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510006, China
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
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8
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Fan Y, Li X, Wang G, Ma J, Liu Y, Xu E, Luo A. Transcriptome analysis reveals the role of polysaccharide biosynthesis in the detoxification of Dendrobium nobile under zinc stress. Int J Biol Macromol 2023; 252:126406. [PMID: 37598828 DOI: 10.1016/j.ijbiomac.2023.126406] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/04/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
Plants can bind excessive heavy metals by synthesizing compounds to alleviate the harm caused by heavy metals. To reveal the mechanism by which Dendrobium nobile alleviates zinc stress, metabolome combined transcriptome analysis was used in this research. The results showed that zinc was mainly enriched in the roots and leaves and the biomass of the roots and leaves of D. nobile decreased significantly by 18.21 % and 49.22 % (P < 0.05) compared to the control (CK), respectively. Meanwhile, the contents of nonprotein thiol(NPT), glutathione(GSH), and phytochelatins (PCs) in the roots were significantly increased by 48.8 %, 78.3 %, and 45.4 % compared to CK, respectively. Through TEM testing, it was found that D. nobile exhibited toxic symptoms. Metabolome analysis showed that the metabolites of D. nobile under zinc stress were mainly enriched in biosynthesis of other secondary metabolites and carbohydrate metabolism. Nova-seq results identified 1202 differentially expressed genes(DEGs), of which 603 were upregulated and 599 were downregulated. Through GO and KEGG annotation analysis of these DEGs, it was found that PMR6 and PECS-2.1, SS1 and GLU3 genes were significantly upregulated, leading to an increase in the biosynthesis of xylan, pectin, starch and other polysaccharides in D. nobile. These polysaccharides can form a "Polysaccharide-Zn" with excess zinc. Meanwhile, the GSTs in glutathione metabolism were significantly upregulated, leading to a significant increase in the content of NPT, GSH, and PCs. These zinc complexes were transported to vacuoles through ABC transporters for compartmentalization, effectively alleviating the damage of zinc. The results can provide new insights for phytoremediation and quality assurance of medicinal D. nobile.
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Affiliation(s)
- Yijun Fan
- Department of Landscape Plants, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuebing Li
- Department of Landscape Plants, Sichuan Agricultural University, Chengdu 611130, China
| | - Gang Wang
- College of Forest, Sichuan Agricultural University, Chengdu 611130, China.
| | - Jie Ma
- Department of Landscape Plants, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuanyuan Liu
- Department of Landscape Plants, Sichuan Agricultural University, Chengdu 611130, China
| | - Erya Xu
- Department of Landscape Plants, Sichuan Agricultural University, Chengdu 611130, China
| | - Aoxue Luo
- Department of Landscape Plants, Sichuan Agricultural University, Chengdu 611130, China.
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9
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Di X, Jing R, Qin X, Wei Y, Liang X, Wang L, Xu Y, Sun Y, Huang Q. Transcriptome analysis reveals the molecular mechanism of different forms of selenium in reducing cadmium uptake and accumulation in wheat seedlings. CHEMOSPHERE 2023; 340:139888. [PMID: 37604343 DOI: 10.1016/j.chemosphere.2023.139888] [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: 06/21/2023] [Revised: 08/03/2023] [Accepted: 08/18/2023] [Indexed: 08/23/2023]
Abstract
Selenium (Se) can counteract cadmium (Cd) toxicity in wheat, but the molecular mechanism of different Se forms reducing Cd uptake and accumulation in wheat seedlings remain unclear. Here, a hydroponic experiment was conducted to investigate the effects of three Se forms (selenite (Se(IV)), selenate (Se(VI)) and seleno-L-methionine (SeMet)) on Cd2+ influx, Cd subcellular distribution, and Cd accumulation in wheat seedlings, and the underlying molecular mechanisms were investigated through transcriptome analysis. Consequently, Se(IV) and Se(VI) addition significantly reduced root Cd concentration by 74.3% and 80.8%, respectively, and all Se treatments significantly decreased shoot Cd concentration by approximately 34.2%-74.9%, with Se(IV) addition having the most pronounced reducing effect. Transcriptome analysis showed the reduction of Cd accumulation after Se(IV) addition was mainly due to the downregulation of Cd uptake genes. The inhibition of Cd accumulation after Se(VI) addition was not only associated with the downregulation of Cd uptake genes, but also related to the sequestration of Cd in vacuole. For SeMet addition, the reduction of Cd accumulation was mainly related to the sequestration of Cd in vacuole as GSH-Cd. The above findings provide novel insights to understand the effects of different forms of Se on Cd uptake and accumulation and tolerance in wheat.
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Affiliation(s)
- Xuerong Di
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Rui Jing
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Xu Qin
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Yihua Wei
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
| | - Xuefeng Liang
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Lin Wang
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Yingming Xu
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Yuebing Sun
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China.
| | - Qingqing Huang
- Innovation Team of Heavy Metal Ecotoxicity and Pollution Remediation, Ministry of Agriculture and Rural Affairs (MARA), Agro-Environmental Protection Institute, MARA, Tianjin, 300191, China.
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10
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Galvis DA, Jaimes-Suárez YY, Rojas Molina J, Ruiz R, León-Moreno CE, Carvalho FEL. Unveiling Cacao Rootstock-Genotypes with Potential Use in the Mitigation of Cadmium Bioaccumulation. PLANTS (BASEL, SWITZERLAND) 2023; 12:2941. [PMID: 37631153 PMCID: PMC10458809 DOI: 10.3390/plants12162941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/26/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023]
Abstract
The accumulation of high cadmium (Cd) levels in cacao beans (Theobroma cacao) generate several commercial and health issues. We hypothesized that cacao phenotypic and genotypic diversity could provide new insights to decrease Cd accumulation in cacao beans. Nine cacao rootstock genotypes were evaluated for up to 90 days under 0, 6, and 12 (mg·kg-1) of CdCl2 exposure and Cd content and plant growth dynamics were measured in leaves, stems, and roots. Data revealed that all cacao genotypes studied here were highly tolerant to Cd, since they presented tolerance index ≥ 60%. In shoots, EET61 and PA46 presented the higher (~270 mg·kg DW-1) and lower (~20 mg·kg DW-1) Cd concentration, respectively. Accordingly, only the EET61 showed an increase in the shoot cadmium translocation factor over the 90 days of exposure. However, when analyzing cadmium allocation to different organs based on total plant dry mass production, none of the genotypes maintained high Cd compartmentalization into roots, since P46, which was the genotype with the highest allocation of Cd to the roots, presented only 20% of total cadmium per plant in this plant organ and 80% allocated into the shoots, under Cd 12 (mg·kg-1) and after 90 days of exposure. Thus, genotypic/phenotypic variability in cacao rootstocks may provide valuable strategies for maximizing the reduction in Cd content in shoots. In this sense, IMC67 and PA46 were the ones that stood out in the present study.
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Affiliation(s)
- Donald A. Galvis
- Centro de Investigación La Suiza, Corporación Colombiana de Investigación Agropecuaria (Agrosavia), Rionegro 250047, Colombia
- Facultad de Ciencias Básicas, Universidad de Córdoba, Montería 230002, Colombia;
| | - Yeirme Y. Jaimes-Suárez
- Centro de Investigación La Suiza, Corporación Colombiana de Investigación Agropecuaria (Agrosavia), Rionegro 250047, Colombia
| | - Jairo Rojas Molina
- Centro de Investigación La Suiza, Corporación Colombiana de Investigación Agropecuaria (Agrosavia), Rionegro 250047, Colombia
| | - Rosalba Ruiz
- Facultad de Ciencias Básicas, Universidad de Córdoba, Montería 230002, Colombia;
| | - Clara E. León-Moreno
- Centro de Investigación La Suiza, Corporación Colombiana de Investigación Agropecuaria (Agrosavia), Rionegro 250047, Colombia
| | - Fabricio Eulalio Leite Carvalho
- Centro de Investigación La Suiza, Corporación Colombiana de Investigación Agropecuaria (Agrosavia), Rionegro 250047, Colombia
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11
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Teng Z, Zhao X, Jia B, Ye L, Tian S, Guo H, Guo Y, Ji X, Li T, Li M. Bioremediation system consisted with Leclercia adecarboxylata and nZVI@Carbon/Phosphate for lead immobilization: The passivation mechanisms of chemical reaction and biological metabolism in soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 340:117888. [PMID: 37087891 DOI: 10.1016/j.jenvman.2023.117888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/21/2023] [Accepted: 04/04/2023] [Indexed: 05/03/2023]
Abstract
Bioremediation is one of the most promising strategies for heavy metal immobilization. A new remediation system was demonstrated in this research, which combined phosphate solubilizing bacteria (PSB) with nZVI@Carbon/Phosphate (nZVI@C/P) composite to remediate lead contaminated soil. Experimental results indicated that the new system (nZVI@C/P + PSB) could effectively convert the labile Pb into the stable fraction after 30 days of incubation, which increased the maximum residual fraction percentage of Pb by 70.58%. The characterization results showed that lead may exist in the forms of Pb5(PO4)3Cl, PbSO4 and 3PbCO3·2Pb(OH)2·H2O in the soil treated with nZVI@C/P + PSB. Meanwhile, soil enzyme activities and Leclercia abundance were enhanced in the treated soil compared with CK during the incubation time. In addition, the specialized functions (e.g. ABC transporters, siderophore metabolism, sulfur metabolism and phosphorus metabolism) in PSB and nZVI@C/P + PSB group were also enhanced. These phenomena proved that the key soil metabolic functions may be maintained and enhanced through the synergistic effect of incubated PSB and nZVI@C/P. The study demonstrated that this new bioremediation system provided feasible way to improve the efficacy for lead contaminated soil remediation.
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Affiliation(s)
- Zedong Teng
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Xin Zhao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Bojie Jia
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Liangjun Ye
- Ganjiang Innovation Academy, Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Shaojing Tian
- Ganjiang Innovation Academy, Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Huiyuan Guo
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yali Guo
- Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200335, China; YANGTZE Eco-Environment Engineering Research Center (Shanghai), China Three Gorges Corporation, Shanghai, 200335, China
| | - Xiaonan Ji
- Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200335, China; YANGTZE Eco-Environment Engineering Research Center (Shanghai), China Three Gorges Corporation, Shanghai, 200335, China
| | - Tinggang Li
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; Ganjiang Innovation Academy, Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Min Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
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12
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Cao Y, Ma C, Yu H, Tan Q, Dhankher OP, White JC, Xing B. The role of sulfur nutrition in plant response to metal(loid) stress: Facilitating biofortification and phytoremediation. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130283. [PMID: 36370480 DOI: 10.1016/j.jhazmat.2022.130283] [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: 08/04/2022] [Revised: 10/11/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Metal(loid)s contamination poses a serious threat to ecosystem biosafety and human health. Phytoremediation is a cost-effective and eco-friendly technology with good public acceptance, although the process does require a significant amount of time for success. To enhance the phytoremediation efficiency, numerous approaches have been explored, including soil amendments application with chelators to facilitate remediation. Sulfur (S), a macronutrient for plant growth, plays vital roles in several metabolic pathways that can actively affect metal(loid)s phytoextraction, as well as attenuate metal(loid) toxicity. In this review, different forms of S-amendments (fertilizers) on uptake and translocation in plants upon exposure to various metal(loid) are evaluated. Possible mechanisms for S application alleviating metal(loid) toxicity are documented at the physiological, biochemical and molecular levels. Furthermore, this review highlights the crosstalk between S-assimilation and other biomolecules, such as phytohormones, polyamines and nitric oxide, which are also important for metal(loid) stress tolerance. Given the effectiveness and potential of S amendments on phytoremediation, future studies should focus on optimizing phytoremediation efficiency in long-term field studies and on investigating the appropriate S dose to maximize the food safety and ecosystem health.
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Affiliation(s)
- Yini Cao
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China; Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
| | - Chuanxin Ma
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Hao Yu
- Department of Environmental and Biological Sciences, University of Eastern Finland, P. O. Box 1672, 70211 Kuopio, Finland
| | - Qian Tan
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China.
| | - Om Parkash Dhankher
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States
| | - Jason C White
- The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States
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13
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Shan G, Li W, Bao S, Hu X, Liu J, Zhu L, Tan W. Energy and nutrient recovery by spent mushroom substrate-assisted hydrothermal carbonization of sewage sludge. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 155:192-198. [PMID: 36379168 DOI: 10.1016/j.wasman.2022.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/15/2022] [Accepted: 11/06/2022] [Indexed: 06/16/2023]
Abstract
Hydrothermal carbonization (HTC) has been recognized as a promising sewage sludge (SS) treatment technology for effective pathogen elimination, bioenergy recovery, organic contaminant destruction and volume reduction. However, the solid product (hydrochar) of SS after HTC as fuel has the problems of high ash content, high nitrogen content and low calorific value. The aqueous phase (AP) produced is still considered a burden and has become a bottleneck in the development of HTC. In this study, co-HTC of SS with spent mushroom substrate (SMS) is conducted, and the fuel properties of hydrochar and the quality of the AP as a liquid fertilizer are investigated. In comparison with hydrochar of single SS, the energy yield and higher heating value of the hydrochar from co-HTC were significantly increased by 12.1-44.8 % and 33.2-137.8 %, respectively, reaching their maximum of 72.75 % and14.98 MJ/kg, respectively. Co-HTC can improve safe handling, storage and transportation, and combustion performance of hydrochar. Furthermore, the AP of co-HTC could significantly increase the biomass of pakchoi, which was 140.9 % and 90.7 % of AP from single SS and Hoagland nutrition solution (represents commercial fertilizer), respectively. The AP of co-HTC as fertilizer can recover 62.03-64.65 % nitrogen from SS and SMS. These findings suggest that co-HTC of SMS with SS is a promising technology for the conversion SS into renewable resource products for fuels and N-rich liquid fertilizer while also significantly improving fuel and fertilizer quality.
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Affiliation(s)
- Guangchun Shan
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Weiguang Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shanshan Bao
- Key Laboratory of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources, Yellow River Engineering Consulting Co. Ltd., Zhengzhou 450003, China
| | - Xinhao Hu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jie Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lin Zhu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Wenbing Tan
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
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14
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Leng Z, Wu Y, Li J, Nie Z, Jia H, Yan C, Hong H, Wang X, Du D. Phenolic root exudates enhance Avicennia marina tolerance to cadmium under the mediation of functional bacteria in mangrove sediments. MARINE POLLUTION BULLETIN 2022; 185:114227. [PMID: 36270055 DOI: 10.1016/j.marpolbul.2022.114227] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 09/28/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
This study was carried out to demonstrate the mechanism of phenolic root exudates affecting microbial-mediated cadmium (Cd) speciation transformation thus enhancing the Avicennia marina tolerance to Cd. A rhizo-box experiment was conducted including eight treatments with four Cd levels (0, 1, 2, and 4 mg Cd kg-1) and two phenol levels (0, 15 mg kg-1). The results showed that the addition of phenols increased the pH, reduced the number of iron-reducing bacteria (IRB) and sulfur-oxidizing bacteria (SOB) in the rhizosphere sediments, meanwhile promoted the transformation of Cd to low activity speciation. Furthermore, the sulfate accumulation and synthesis of flavonoid phenols in plants were also enhanced. The results indicated that phenolic root exudates inhibit functional bacteria-mediated Fe and S cycles and promote the immobilization of Cd in the sediments. In conclusion, the mitigation of Cd phytotoxicity induced by phenolic root exudates enhanced the Cd tolerance of A. marina.
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Affiliation(s)
- Zhanrui Leng
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yueming Wu
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jian Li
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environment Protection Institution, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China.
| | - Ziying Nie
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Hui Jia
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Chongling Yan
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Hualong Hong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Xinhong Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Daolin Du
- Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
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15
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Yao X, Zhang J, Wang C, Wang Q, Li X, Zhang D, Wang J, Zhu L, Wang J. Toxicity of dibutyl phthalate to pakchoi (Brassica campestris L.): Evaluation through different levels of biological organization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 849:157943. [PMID: 35952877 DOI: 10.1016/j.scitotenv.2022.157943] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Dibutyl phthalate (DBP) is a typical persistent organic pollutant with a high load in the agricultural soils of vegetable crops. Currently, studies on the toxicity of DBP in vegetable crops are limited. Therefore, in this study, pakchoi (Brassica campestris L.), a typical vegetable crop, was used to evaluate the toxic effects of DBP. Pakchoi was exposed to DBP for 24 d at three doses (2, 20, and 200 mg/kg), and the phenotypic, biochemical, and molecular indicators were determined. The results revealed that DBP could reduce the emergence of pakchoi and inhibit plant height, root length, fresh weight, and leaf area. At the biochemical level, DBP exposure could reduce the content of three typical photosynthetic pigments (chlorophyll a and b and carotenoids). The effects of DBP exposure on the quality of pakchoi were primarily through reduced soluble sugar and increased proline contents. In addition, O2·- and H2O2 levels increased after DBP stress, and the corresponding antioxidant enzymes (SOD, POD, and CAT) were activated to resist oxidative damage. The dose- and time-dependent toxicities of DBP to pakchoi were demonstrated using an integrated biological response index. Finally, the molecular-level results on Day 24 showed that the three antioxidant enzyme genes (sod, pod, and cat) were significantly downregulated, and the antioxidant enzyme genes were more sensitive biomarkers than the enzyme activities. However, the expression level of enzyme genes was opposite to that of enzyme activity (SOD and POD); thus, DBP might directly interact with these enzymes. Molecular docking showed that DBP could stably bind near the SOD/POD active center through intermolecular interaction forces. This study provides essential information on the risk of DBP toxicity to vegetable crops.
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Affiliation(s)
- Xiangfeng Yao
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Jingwen Zhang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Can Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Qian Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Xianxu Li
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Dexin Zhang
- Bureau of Agriculture and Rural Affairs of Changle, Weifang, Shandong 262400, PR China
| | - Jinhua Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Lusheng Zhu
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Jun Wang
- College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
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16
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Guo J, Chen M, Huang Y, Xie S, Hu C, Xu B, Wang G. Understanding the mechanisms of zeolite in inhibiting Pb accumulation in different rice cultivars (Oryza sativa). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:80312-80322. [PMID: 35716307 DOI: 10.1007/s11356-022-21331-6] [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: 01/13/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Zeolite is one of the potential passivating amendments for the immobilization of lead (Pb) in contaminated farmland soils. In this study, pot experiments were carried out to investigate the effects and the mechanisms of zeolite on Pb accumulation in two rice cultivars grown in a slightly Pb-contaminated soil. Results showed that Pb content in grains of Zheyou 18 (ZY-18) decreased by the addition of 6 g zeolite kg-1 soil (E6), which can be attributed to the reduction in soil Pb availability, dissolved organic carbon (DOC), water-soluble iron (Fe) and manganese (Mn), and the transfer factor from soil to grain (TFsoil-grain). These reductions were mainly resulting from the significant increase in soil pH, glutathione (GSH), phytochelatins (PCs), and non-protein (NPT) content in rice root, and the decrease in soil redox potential (Eh), due to zeolite addition. Pb content in brown rice of DL-5 was not significantly affected with E6 treatment, whereas it was raised by applying 12 g zeolite kg-1 soil (E12). The increase of Pb content of Donglian 5 (DL-5) grains with E12 treatment can be attributed to more Pb uptake by the root, higher Pb transfer factors (TFs) between various parts of rice, and significant decrease in GSH, PCs, and NPT contents in the root. It is concluded that a suitable rate of zeolite addition can immobilize Pb in slightly Pb-contaminated acidic soil. However, the final immobilization effect also depends on rice cultivars.
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Affiliation(s)
- Jingxia Guo
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Miaofen Chen
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Yongxin Huang
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Shengcong Xie
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Cong Hu
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Bo Xu
- College of Resource and Environmental Science, Soil Environmental Health and Regulation, Key Laboratory of Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of 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, People's Republic of China.
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17
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Huang G, Zuverza-Mena N, White JC, Hu H, Xing B, Dhankher OP. Simultaneous exposure of wheat (Triticum aestivum L.) to CuO and S nanoparticles alleviates toxicity by reducing Cu accumulation and modulating antioxidant response. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 839:156285. [PMID: 35636547 DOI: 10.1016/j.scitotenv.2022.156285] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/04/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Widespread use of metal-based nanoparticles (NPs) may result in the increased accumulation of metals in agricultural soil, which could affect crop productivity and contaminate the food-chain. The effect of sulfur nanoparticles (S NPs, 200 mg/L) co-exposure on the toxicity of CuO nanoparticles (CuO NPs, 25 and 50 mg/L) to wheat seedlings was investigated in a hydroponic system. CuO NPs exposure significantly inhibited the growth of wheat seedlings, causing 43.6% and 54.1% decreases in the fresh biomass of plants and 82.8% and 83.1% decrease in the total chlorophyll contents at 25 and 50 mg/L (CuONP25 and CuONP50), respectively, as compared to controls. CuO NPs exposure at both concentrations increased the malondialdehyde (MDA) content in shoot and root tissues by 66.4-67.9% and 47.7-48.8%, respectively. Further, CuO NPs exposure elevated the activities POD, SOD, and CAT by 2.19-2.27, 5.82-6.09, and 1.44-1.95 times in roots, and by 45.2-67.8%, 86.7-154.5%, and 22.5-56.1% in shoot, respectively, in comparison to control. The addition of S NPs alone increased wheat biomass by 11.0% and total chlorophyll contents by 4.4%, compared to controls. Further, simultaneous exposure to S NPs (200 mg/L) and CuO NPs (25 or 50 mg/L) alleviated the CuO NPs toxicity; wheat biomass was 47.8% and 37.7% higher in CuONP25 + SNP and CuONP50 + SNP treatments, respectively, as compared to CuO NPs alone treated plants. Co-exposed plants showed reduced levels of total reactive oxygen species (ROS), O2·- and H2O2. Additionally, S NPs exposure reduced Cu uptake and accumulation in both root and shoot tissue by 32.2-54.4% and 38.3-57.5%, respectively. In summary, S NPs alleviated CuO NPs toxicity to wheat seedlings, most likely by reducing Cu bioavailability and accumulation of Cu in plant tissues, and also altered S nutrition and the modulation of antioxidant response in plants. These results showed that S NPs application has the potential to alleviate CuO NP toxicity and increase wheat productivity affected by metals toxicity.
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Affiliation(s)
- Guoyong Huang
- Stockbridge School of Agriculture, University of Massachusetts Amherst, MA 01003, USA; Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | | | - Jason C White
- Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Hongqing Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts Amherst, MA 01003, USA.
| | - Om Parkash Dhankher
- Stockbridge School of Agriculture, University of Massachusetts Amherst, MA 01003, USA.
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18
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Rahman SU, Nawaz MF, Gul S, Yasin G, Hussain B, Li Y, Cheng H. State-of-the-art OMICS strategies against toxic effects of heavy metals in plants: A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 242:113952. [PMID: 35999767 DOI: 10.1016/j.ecoenv.2022.113952] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
Environmental pollution of heavy metals (HMs), mainly due to anthropogenic activities, has received growing attention in recent decades. HMs, especially the non-essential carcinogenic ones, including chromium (Cr), cadmium (Cd), mercury (Hg), aluminum (Al), lead (Pb), and arsenic (As), have appeared as the most significant air, water, and soil pollutants, which adversely affect the quantity, quality, and security of plant-based food all over the world. Plants exposed to HMs could experience significant decline in growth and yield. To avoid or tolerate the toxic effects of HMs, plants have developed complicated defense mechanisms, including absorption and accumulation of HMs in cell organelles, immobilization by forming complexes with organic chelates, extraction by using numerous transporters, ion channels, signalling cascades, and transcription elements, among others. OMICS strategies have developed significantly to understand the mechanisms of plant transcriptomics, genomics, proteomics, metabolomics, and ionomics to counter HM-mediated stress stimuli. These strategies have been considered to be reliable and feasible for investigating the roles of genomics (genomes), transcriptomic (coding), mRNA transcripts (non-coding), metabolomics (metabolites), and ionomics (metal ions) to enhance stress resistance or tolerance in plants. The recent developments in the mechanistic understandings of the HMs-plant interaction in terms of their absorption, translocation, and toxicity invasions at the molecular and cellular levels, as well as plants' response and adaptation strategies against these stressors, are summarized in the present review. Transcriptomics, genomics, metabolomics, proteomics, and ionomics for plants against HMs toxicities are reviewed, while challenges and future recommendations are also discussed.
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Affiliation(s)
- Shafeeq Ur Rahman
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong 523808, China; MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Muhammad Farrakh Nawaz
- Department of Forestry and Range Management, University of Agricultureó, Faisalabad, Pakistan
| | - Sadaf Gul
- Department of Botany, University of Karachi, Karachi, Pakistan
| | - Ghulam Yasin
- Department of Forestry and Range Management, Bahauddin Zakariya University Multan, Pakistan
| | - Babar Hussain
- Department of Plant Science Karakoram International University (KIU), Gilgit 15100, Gilgit-Baltistan, Pakistan
| | - Yanliang Li
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong 523808, China; Dongguan Key Laboratory of Water Pollution and Ecological Safety Regulation, Dongguan, Guangdong 523808, China.
| | - Hefa Cheng
- MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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19
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Zhu M, Duan X, Zeng Q, Liu Y, Qiu Z. He-Ne laser irradiation ameliorates cadmium toxicity in wheat by modulating cadmium accumulation, nutrient uptake and antioxidant defense system. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 236:113477. [PMID: 35367883 DOI: 10.1016/j.ecoenv.2022.113477] [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: 11/30/2021] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Cadmium (Cd) is one of the most hazardous heavy metals that negatively affect the growth and yield of wheat. He-Ne laser irradiation is known to ameliorate cadmium (Cd) stress in wheat. However, the underlying mechanism of He-Ne laser irradiation on protecting wheat against Cd stress is not well recognized. In present study, Cd-treated wheat showed significant reduction in growth, root morphology and total chlorophyll content, but notably increase of Cd accumulation in both roots and shoots. However, He-Ne laser irradiation dramatically reduced concentrations of malondialdehyde (MDA) and hydrogen peroxide (H2O2), and increased total chlorophyll content and activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) in roots of wheat plants under Cd stress. Further, He-Ne laser irradiation significantly upregulated the transcripts of TaGR (glutathione reductase) and TaGST (glutathione-S-transferase) genes along with the increased activities of GR and GST and glutathione (GSH) concentration in roots of wheat seedlings under Cd stress. In addition, He-Ne laser irradiation enhanced the uptake of mineral elements (N, P, Mg, Fe, Zn and Cu), and significantly decreased Cd uptake and transport mainly through down-regulating the expressions of Cd transport genes (TaHMA2 and TaHMA3) in roots of wheat seedlings under Cd stress. Overall, these findings suggested that He-Ne laser irradiation alleviated the adverse effects of Cd on wheat growth by enhancing antioxidant defense system, improving mineral nutrient status, and decreasing the Cd uptake and transport. This study provides new insights into the roles of He-Ne laser irradiation in the amelioration of Cd stress in wheat and indicates the potential application of this irradiation in crop breeding and growth under Cd stress conditions.
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Affiliation(s)
- Mo Zhu
- College of Life Science, Henan Normal University, Xinxiang 453007, PR China; Henan International Joint Laboratory of Agricultural Microbial Ecology and Technology, Henan Normal University, Xinxiang 453007, PR China
| | - Xiao Duan
- College of Life Science, Henan Normal University, Xinxiang 453007, PR China
| | - Qianqian Zeng
- College of Life Science, Henan Normal University, Xinxiang 453007, PR China
| | - Yan Liu
- College of Life Science, Henan Normal University, Xinxiang 453007, PR China
| | - Zongbo Qiu
- College of Life Science, Henan Normal University, Xinxiang 453007, PR China; Henan International Joint Laboratory of Agricultural Microbial Ecology and Technology, Henan Normal University, Xinxiang 453007, PR China.
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20
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Unraveling Cadmium Toxicity in Trifolium repens L. Seedling: Insight into Regulatory Mechanisms Using Comparative Transcriptomics Combined with Physiological Analyses. Int J Mol Sci 2022; 23:ijms23094612. [PMID: 35563002 PMCID: PMC9105629 DOI: 10.3390/ijms23094612] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/17/2022] [Accepted: 04/19/2022] [Indexed: 01/27/2023] Open
Abstract
Trifolium repens (T. repens) can accumulate significant amounts of heavy metal ions, and has strong adaptability to wide environmental conditions, and relatively large biomass, which is considered a potential plant for phytoremediation. However, the molecular mechanisms of T. repens involved in Cd tolerance have not yet been studied in detail. This study was conducted to examine the integrative responses of T. repens exposed to a high-level CdCl2 by investigating the physiological and transcriptomic analyses. The results suggested that T. repens seedlings had a high degree of tolerance to Cd treatment. The roots accumulated higher Cd concentration than leaves and were mainly distributed in the cell wall. The content of MDA, soluble protein, the relative electrolyte leakage, and three antioxidant enzymes (POD, SOD, and APX) was increased with the Cd treatment time increasing, but the CAT enzymes contents were decreased in roots. Furthermore, the transcriptome analysis demonstrated that the differentially expressed genes (DEGs) mainly enriched in the glutathione (GSH) metabolism pathway and the phenylpropanoid biosynthesis in the roots. Overexpressed genes in the lignin biosynthesis in the roots might improve Cd accumulation in cell walls. Moreover, the DEGs were also enriched in photosynthesis in the leaves, transferase activity, oxidoreductase activity, and ABA signal transduction, which might also play roles in reducing Cd toxicity in the plants. All the above, clearly suggest that T. repens employ several different mechanisms to protect itself against Cd stress, while the cell wall biosynthesis and GSH metabolism could be considered the most important specific mechanisms for Cd retention in the roots of T. repens.
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21
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Huang L, Hansen HCB, Yang X, Xie Z, Li S, Yang M, Liang X, Hu Z. Does sulfur application continue to reduce cadmium accumulation and increase the seed yield of oilseed rape (Brassica napus L.) at the maturity stage? JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2281-2290. [PMID: 34625978 DOI: 10.1002/jsfa.11566] [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: 06/29/2021] [Revised: 09/15/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Oilseed rape requires sulfur (S) fertilization. Cadmium (Cd) differs dramatically in agricultural soils. Rice-oilseed rape rotation distributes widely and contributes the majority of rapeseeds in Asian countries. It was reported that S metabolism was involved in Cd uptake in seedlings of oilseed rape, although the effects of S on Cd accumulation and seed yield at maturity are still unclear. RESULTS We performed a pot experiment including two Cd rates (0.35 and 10.35 mg kg-1 , as low and high Cd soil) and four S levels (0, 30, 60 and 120 mg kg-1 ). The results showed that low S application (30 mg kg-1 ) resulted in two-fold higher seed-Cd concentration irrespective of soil Cd levels. The responsible mechanism might be that Cd translocation into rapeseeds was involved in sulfate transporters, which could be strongly expressed in shoots and roots when supplying sulfate under S-starvation conditions, but depressed under a S-sufficient environment. For high Cd soil, seed yield decreased by 36%, 48% and 72% at 30, 60 and 120 mg S kg-1 compared to non-S treatment, whereas there were no differences for low Cd soil. Antagonistic effects of S and Cd existed for seed yield according to structure equation model analysis. CONCLUSION Oilseed rape can be grown in low-Cd fields as a safe food crop with high levels of sulfur fertilizers (>60 mg S kg-1 ). In high-Cd fields, oilseed rape is recommended as a Cd-remediation crop, and rapeseeds should only be used for industrial purposes and not for food. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Lijuan Huang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
- Sino-Danish Center for Education and Research (SDC), Beijing, China
| | - Hans C B Hansen
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
- Sino-Danish Center for Education and Research (SDC), Beijing, China
| | - Xiaosong Yang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Zijian Xie
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Songyan Li
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
- Sino-Danish Center for Education and Research (SDC), Beijing, China
| | - Mei Yang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaomeng Liang
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Zhengyi Hu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
- Sino-Danish Center for Education and Research (SDC), Beijing, China
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22
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Zhang Z, Wei J, Wang M, Zhang J, Wu B. Induced sulfur metabolism by sulfur dioxide maintains postharvest quality of 'Thompson Seedless' grape through increasing sulfite content. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:1174-1184. [PMID: 34338316 DOI: 10.1002/jsfa.11454] [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: 04/04/2021] [Revised: 07/07/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The commercial preservation of table grapes largely depends on the application of sulfur dioxide (SO2 ). However, little is known about whether SO2 participates in sulfur metabolism to improve the postharvest quality of table grapes. In this study, the contents of sulfur-containing compounds, activities of enzymes, and expression of genes involved in sulfur metabolism in table grapes (Vitis vinifera cv. Thompson Seedless) were evaluated. RESULTS The results indicated that SO2 treatment maintained the postharvest quality of table grapes. The sulfite content in rachises and berries, but not the sulfate content, increased in response to SO2 treatment. SO2 caused high activities of sulfite reductase, O-acetylserine (thiol)-lyase, and γ-glutamylcysteine synthetase, thereby increasing the contents of cysteine, hydrogen sulfide, and glutathione in the rachises and berries. The expression of VvSURTL, VvATPS1, VvATPS2, and VvAPR3 decreased in response to SO2 treatment; however, the transcript levels of VvSiR1 and VvOASTL exhibited the opposite tendency. CONCLUSION These findings indicated that the sulfite converted from SO2 participated in sulfur metabolism and maintained the postharvest quality of table grapes by modulating the contents of metabolites, activities of enzymes, and expression of genes related to sulfur metabolism. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Zheng Zhang
- College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, People's Republic of China
| | - Jia Wei
- Institute of Agro-products Storage and Processing, Xinjiang Academy of Agricultural Science, Urumqi, Xinejiang, People's Republic of China
| | - Man Wang
- College of Food Science and Pharmaceutical Science, Xinjiang Agricultural University, Urumqi, Xinjiaeng, People's Republic of China
| | - Jian Zhang
- Institute of Agro-products Storage and Processing, Xinjiang Academy of Agricultural Science, Urumqi, Xinejiang, People's Republic of China
| | - Bin Wu
- Institute of Agro-products Storage and Processing, Xinjiang Academy of Agricultural Science, Urumqi, Xinejiang, People's Republic of China
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23
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Deng Y, Fu S, Sarkodie EK, Zhang S, Jiang L, Liang Y, Yin H, Bai L, Liu X, Liu H, Jiang H. Ecological responses of bacterial assembly and functions to steep Cd gradient in a typical Cd-contaminated farmland ecosystem. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 229:113067. [PMID: 34890983 DOI: 10.1016/j.ecoenv.2021.113067] [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: 07/26/2021] [Revised: 11/30/2021] [Accepted: 12/05/2021] [Indexed: 06/13/2023]
Abstract
The response of soil bacterial communities from farmland ecosystems to cadmium (Cd) pollution, in which a steep concentration gradient of more than 100 mg/kg has naturally formed, has not previously been fully reported. In this study, a field investigation was conducted in a typical severe Cd-polluted farmland ecosystem, and the bacterial community response to the steep Cd gradient was analyzed. The results showed that Cd concentration sharply decreased from 159.2 mg/kg to 4.18 mg/kg among four sampling sites alongside an irrigation canal over a distance of 150 m. Bacterial diversity and richness were significantly lower in highly polluted sites, and random forest analysis indicated that Cd gradient played a decisive role in reducing alpha diversity. Redundancy analysis (RDA) and co-occurrence network indicated that the synergistic effects of pH, Cd, and phosphorus were the main drivers shaping community structure. The functional results predicted by BugBase suggested that the bacterial community may adapt to the harsh environment by recruiting Cd-resistant microbes and improving oxidative stress tolerance of the whole community. Cd-resistant microorganisms such as Burkholderia, Bradyrhizobium, and Sulfurifustis, which directly or indirectly participate in diminishing oxidative damage of Cd, may play essential roles in maintaining community stability and might be potential bacterial resources for the bioremediation of Cd pollution.
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Affiliation(s)
- Yan Deng
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China.
| | - Shaodong Fu
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Emmannuel Konadu Sarkodie
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Shuangfei Zhang
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Luhua Jiang
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Yili Liang
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Huaqun Yin
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Lianyang Bai
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Hongwei Liu
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China.
| | - Huidan Jiang
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China.
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24
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Shen C, Fu HL, Liao Q, Huang B, Fan X, Liu XY, Xin JL, Huang YY. Transcriptome analysis and physiological indicators reveal the role of sulfur in cadmium accumulation and transportation in water spinach (Ipomoea aquatica Forsk.). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 225:112787. [PMID: 34544020 DOI: 10.1016/j.ecoenv.2021.112787] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/27/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Cadmium (Cd) contamination of croplands has become a threat to crop food safety and human health. In this study, we investigated the effect of sulfur on the growth of water spinach under Cd stress and the amount of Cd accumulation by increasing the soil sulfate content. We found that the biomass of water spinach significantly increased after the application of sulfur while the shoot Cd concentration was considerably reduced (by 31%). The results revealed that sulfur could promote the expression of PME and LAC genes, accompanied by an increase in PME activity and lignin content. Also, the cell wall Cd content of water spinach roots was significantly increased under sulfur treatment. This finding suggests that sulfur could enhance the adsorption capacity of Cd by promoting the generation of cell wall components, thereby inhibiting the transportation of Cd via the apoplastic pathway. In addition, the higher expression of Nramp5 under the Cd1S0 (concentration of Cd and sulfur are 2.58 and 101.31 mg/kg respectively) treatment led to increased Cd uptake. The CAX3 and ABC transporters and GST were expressed at higher levels along with a higher cysteine content and GSH/GSSR value under Cd1S1 (concentration of Cd and sulfur are 2.60 and 198.36 mg/kg respectively) treatment, which contribute to the Cd detoxification and promotion of Cd compartmentalization in root vacuoles, thereby reducing the translocation of Cd to the shoot via the symplastic pathway.
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Affiliation(s)
- Chuang Shen
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Hui-Ling Fu
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Qiong Liao
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Baifei Huang
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Xi Fan
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Xue-Yang Liu
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Jun-Liang Xin
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China.
| | - Ying-Ying Huang
- Research Center for Environmental Pollution Control Technology, School of Safety and Environmental Engineering, Hunan Institute of Technology, Hengyang 421002, China.
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25
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Aksoy E, Uncu AT, Filiz E, Orman Ş, Çetin D, Akbudak MA. Genes involved in mRNA surveillance are induced in Brachypodium distachyon under cadmium toxicity. Mol Biol Rep 2021; 49:5303-5313. [PMID: 34812999 DOI: 10.1007/s11033-021-06952-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/10/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Cd accumulation in plant cells results in dramatic problems including oxidative stress and inhibition of vital enzymes. It also affects mineral uptakes by disrupting membrane permeability. Interaction among Cd and other plant nutrient elements changes the nutritional contents of crops and reduces their yield. METHODS AND RESULTS In the present study, Cd stress in Brachypodium distachyon led to the upregulation of some heavy metal transport genes (influx or efflux) encoding cation-efflux proteins, heavy metal-associated proteins and NRAMP proteins. The Arabidopsis orthologs of the differentially expressed B. distachyon genes (DEGs) under Cd toxicity were identified, which exhibited Bradi4g26905 was an ortholog of AtALY1-2. Detailed co-expression network and gene ontology analyses found the potential involvement of the mRNA surveillance pathway in Cd tolerance in B. distachyon. These genes were shown to be downregulated by sulfur (S) deficiency. CONCLUSIONS This is the first transcriptomic study investigating the effect of Cd toxicity in B. distachyon, a model plant for genomic studies in Poaceae (Gramineae) species. The results are expected to provide valuable information for more comprehensive research related to heavy metal toxicity in plants.
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Affiliation(s)
- Emre Aksoy
- Department of Biological Sciences, Middle East Technical University, Ankara, Turkey
| | - Ali Tevfik Uncu
- Department of Molecular Biology and Genetics, Necmettin Erbakan University, Konya, Turkey
| | - Ertugrul Filiz
- Department of Agricultural Production, Duzce University, Cilimli Vocational School, Duzce, Turkey
| | - Şule Orman
- Department of Soil Science and Plant Nutrition, Akdeniz University, Antalya, Turkey
| | - Durmuş Çetin
- Department of Agricultural Biotechnology, Akdeniz University, Antalya, Turkey
| | - M Aydın Akbudak
- Department of Agricultural Biotechnology, Akdeniz University, Antalya, Turkey.
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26
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Zakari S, Jiang X, Zhu X, Liu W, Allakonon MGB, Singh AK, Chen C, Zou X, Akponikpè PBI, Dossa GGO, Yang B. Influence of sulfur amendments on heavy metals phytoextraction from agricultural contaminated soils: A meta-analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117820. [PMID: 34329071 DOI: 10.1016/j.envpol.2021.117820] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 07/08/2021] [Accepted: 07/19/2021] [Indexed: 05/28/2023]
Abstract
Heavy metal pollution is becoming recurrent and threatens biota biosafety in many agricultural fields. Diverse solutions explore the application of amendments to enable remediation. Sulfur represents a nonmetallic chemical element that actively affects heavy metals phytoextraction, and promotes and alternatively mitigates soil functions. In this study, we conduct a meta-analysis to synthesize the current knowledge on the influence of sulfur amendments on plants heavy metals uptake from contaminated soil media. Random-effects model was used to summarize effect sizes from 524 data points extracted from 30 peer reviewed studies. The phytoextraction of cadmium, chromium and nickel were 1.6-, 3.3-, and 12.6-fold, respectively, higher when sulfur amendment was applied; while copper uptake was 0.3-fold lower. Irrespective of the sulfur type, heavy metal extraction increased with the raising sulfur stress. Individual organs showed significant differences of heavy metal uptake between sulfur applied and non-sulfur treatments, and combined organs did not. The heavy metals uptake in leaves and roots were higher in sulfur applied than non-sulfur applied treatments, while those in grain, husk, and stalks were lower. The heavy metals phytoextraction (response ratio) followed the order roots > leaves > stalk > grain > husk. Moreover, heavy metals uptake was 2-fold higher in the sulfur applied than the non-sulfur treatments under ideal (5.5-8) and alkaline conditions (8-14), and 0.2-fold lower under acidic pH (1-5.5). Cadmium, manganese and nickel, and chromium were the most extracted under sulfur application by Vicia sp., Sorghum sp. and Brassica sp., respectively; while chromium, manganese, and iron were the most uptake without sulfur amendments by Oryza sp., Zea sp. and Sorghum sp., respectively. Our study highlights that the influence of sulfur on heavy metal phytoextraction depends on the single or combined effects of sulfur stress intensity, sulfur compounds, plant organ, plant type, and soil pH condition.
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Affiliation(s)
- Sissou Zakari
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Laboratory of Hydraulics and Environmental Modeling (HydroModE-Lab), Faculté d'Agronomie, Université de Parakou, 03 BP 351, Parakou, Benin
| | - Xiaojin Jiang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
| | - Xiai Zhu
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
| | - Wenjie Liu
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China.
| | - M Gloriose B Allakonon
- Laboratory of Hydraulics and Environmental Modeling (HydroModE-Lab), Faculté d'Agronomie, Université de Parakou, 03 BP 351, Parakou, Benin
| | - Ashutosh Kumar Singh
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
| | - Chunfeng Chen
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
| | - Xin Zou
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
| | - P B Irénikatché Akponikpè
- Laboratory of Hydraulics and Environmental Modeling (HydroModE-Lab), Faculté d'Agronomie, Université de Parakou, 03 BP 351, Parakou, Benin
| | - Gbadamassi G O Dossa
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
| | - Bin Yang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China; Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Yunnan, 666303, China
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27
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Kiiskila JD, Sarkar D, Datta R. Differential protein abundance of vetiver grass in response to acid mine drainage. PHYSIOLOGIA PLANTARUM 2021; 173:829-842. [PMID: 34109636 DOI: 10.1111/ppl.13477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/27/2021] [Accepted: 06/07/2021] [Indexed: 06/12/2023]
Abstract
Acid mine drainage (AMD) is an acidic and metalliferous discharge that imposes oxidative stress on living things through bioaccumulation and physical exposure. The abandoned Tab-Simco mining site of Southern Illinois generates highly acidic AMD with elevated sulfate (SO4 2- ) and various metals. Vetiver grass (Chrysopogon zizanioides) is effective for the remediation of Tab-Simco AMD at both mesocosm and microcosm levels over extended periods. In this study, we conducted a proteomic investigation of vetiver shoots under short and long-term exposure to AMD. Our objective was to decipher the physiological responses of vetiver to the combined abiotic stresses of AMD (metal and low pH). Differential regulation was observed for longer-term (56 days) exposure to AMD, which resulted in 17 upregulated and nine downregulated proteins, whereas shorter-term (7 days) exposure led to 14 upregulated and 14 downregulated proteins. There were significant changes to photosynthesis, including upregulation of electron transport chain proteins for light-dependent reactions after 56 days, whereas differential regulation of enzymes relating to C4 carbon fixation was observed after 7 days. Significant changes in amino acid and nitrogen metabolism, including upregulation of ethylene and flavonoid biosynthesis, along with plant response to nitrogen starvation, were observed. Short-term changes also included upregulation of glutathione reductase and methionine sulfoxide reductase, whereas longer-term changes included changes in protein misfolding and ER-associated protein degradation for stress management and acclimation.
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Affiliation(s)
- Jeffrey D Kiiskila
- Department of Biological Sciences, Michigan Technological University, Houghton, Michigan, USA
- Department of Natural Sciences, Chadron State College, Chadron, Nebraska, USA
| | - Dibyendu Sarkar
- Department of Civil, Environmental, and Ocean Engineering, Stevens Institute of Technology, Hoboken, New Jersey, USA
| | - Rupali Datta
- Department of Biological Sciences, Michigan Technological University, Houghton, Michigan, USA
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Huang L, Hansen HCB, Yang X, Mu J, Xie Z, Li S, Wu G, Hu Z. Effects of sulfur application on cadmium accumulation in brown rice under wheat-rice rotation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117601. [PMID: 34147781 DOI: 10.1016/j.envpol.2021.117601] [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: 01/26/2021] [Revised: 05/20/2021] [Accepted: 06/13/2021] [Indexed: 06/12/2023]
Abstract
We investigated how sulfur (S) application prior to wheat cultivation under wheat-rice rotation influences the uptake of cadmium (Cd) in rice grown in low- and high-Cd soils. A pot experiment was conducted with four S levels (0, 30, 60, 120 mg S kg-1) and two Cd rates (low and high, 0.35 and 10.35 mg Cd kg-1) supplied to wheat. Part of the wheat straw was returned to the soil before planting rice, which was cultivated for 132 days. To explore the key mechanisms by which S application controlled Cd accumulation in brown rice, (1) soil pore water at the key growth stages was sampled, and dissolved Cd and S species concentrations were determined; (2) rice plant tissues (including iron plaque on the root surface) were sampled at maturity for Cd and S analysis. With increasing S level, Cd accumulation in brown rice peaked at 60 mg S kg-1, irrespective of soil Cd levels. For high-Cd soils, concentrations of Cd in brown rice increased by 57%, 228%, and 100% at 30, 60, and 120 mg S kg-1, respectively, compared with no S treatment. The increase in brown rice Cd by low S levels (0-60 mg kg-1) could be attributed to (1) the S-induced increase in soil pore water sulfate increasing the Cd influx into rice roots and (2) the S-induced increase in leaf S promoting Cd translocation into brown rice. However, brown rice Cd decreased at 120 mg S kg-1 due to (1) low Cd solubility at 120 mg S kg-1 and (2) root and leaf S uptake, which inhibited Cd uptake. Sulfur application to wheat crop increased the risk of Cd accumulation in brown rice. Thus, applying S-containing fertilizers to Cd-contaminated paddy soils is not recommended.
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Affiliation(s)
- Lijuan Huang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 101408, China; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, Copenhagen, 1871, Denmark; Sino-Danish Centre for Education and Research (SDC), Beijing, 101408, China.
| | - Hans Chr Bruun Hansen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, Copenhagen, 1871, Denmark; Sino-Danish Centre for Education and Research (SDC), Beijing, 101408, China.
| | - Xiaosong Yang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 101408, China.
| | - Jing Mu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 101408, China; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, Copenhagen, 1871, Denmark; Sino-Danish Centre for Education and Research (SDC), Beijing, 101408, China.
| | - Zijian Xie
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 101408, China.
| | - Songyan Li
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 101408, China; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C, Copenhagen, 1871, Denmark; Sino-Danish Centre for Education and Research (SDC), Beijing, 101408, China.
| | - Guangmei Wu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 101408, China; Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Zhengyi Hu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 101408, China; Sino-Danish Centre for Education and Research (SDC), Beijing, 101408, China.
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Luo W, Long Y, Feng Z, Li R, Huang X, Zhong J, Liu D, Zhao H. A γ-glutamylcysteine ligase AcGCL alleviates cadmium-inhibited fructooligosaccharides metabolism by modulating glutathione level in Allium cepa L. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126255. [PMID: 34157465 DOI: 10.1016/j.jhazmat.2021.126255] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/12/2021] [Accepted: 05/26/2021] [Indexed: 06/13/2023]
Abstract
Fructooligosaccharides (FOS) are important carbohydrates in plants. Cadmium (Cd) toxicity limits growth and development in several plant species. Whether FOS metabolism is affected by Cd and the molecular mechanisms of tolerance of the effects of Cd toxicity in plants remain enigmatic. In the present study, FOS metabolism was analyzed under Cd stress in onion (Allium cepa L.). Results showed that Cd stress can inhibit FOS accumulation in onion, followed by the upregulation of a putative onion γ-glutamylcysteine ligase gene AcGCL. Heterologous expression of the AcGCL protein in Escherichia coli revealed that this recombinant enzyme has GCL activity. Furthermore, overexpressing AcGCL significantly increased glutathione (GSH) accumulation in young onion roots under Cd treatment, accompanied by increased phytochelatin (PC) amount, and increased transcript expression of GSH synthetase (GS), and phytochelatin synthase (PCS) genes. Notably, compared with control, overexpressing AcGCL ameliorated Cd phytotoxicity on onion FOS metabolism, which correlated with increased FOS synthesis. Taken together, these results suggest that the function of AcGCL as a γ-glutamylcysteine ligase can alleviate Cd inhibited FOS metabolism by modulating GSH levels in onion.
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Affiliation(s)
- Wei Luo
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China; Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou 510642, China; Guangdong Vegetable Engineering and Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Yuming Long
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Zili Feng
- School of Bioscience and Engineering, Shaanxi University of Technology, Hanzhong 723001, China
| | - Rui Li
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Xiaojia Huang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Jiaxin Zhong
- Centre for Organismal Studies Heidelberg, Department of Plant Molecular Physiology, Heidelberg University, Heidelberg 69120, Germany
| | - Dongyun Liu
- The Technology Center for Protein Sciences, Tsinghua University, Beijing 100084, China
| | - Hongbo Zhao
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou 510642, China; Lingnan Guangdong Laboratory of Modern Agriculture, Guangzhou 510642, China; Guangdong Vegetable Engineering and Technology Research Center, South China Agricultural University, Guangzhou 510642, China.
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Wang K, Yu H, Zhang X, Ye D, Huang H, Wang Y, Zheng Z, Li T. A transcriptomic view of cadmium retention in roots of cadmium-safe rice line (Oryza sativa L.). JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126379. [PMID: 34329031 DOI: 10.1016/j.jhazmat.2021.126379] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
A better understanding of the mechanisms controlling cadmium (Cd) accumulation in rice will benefit the development of strategies to minimize Cd accumulation in grains. A Cd-safe rice line designated D62B accumulated less than 0.2 mg Cd kg-1 in brown rice due to its strong capacity for Cd retention in roots. Here transcriptomic was used to clarify the underlying mechanisms of Cd response in roots of D62B compared with a high Cd-accumulating line (Wujin4B). There were 777, 1058 differentially expressed genes (DEGs) in D62B and Wujin4B, respectively, when exposed to Cd. The functions of DEGs were clearly line-specific. Cell wall biosynthesis responded more intensively to Cd stress in D62B, facilitating Cd restriction. Meanwhile, more glutathione (GSH) and phytochelatins synthesized in D62B with the upregulation of sulphur and GSH metabolism. Besides, membrane proteins played critical roles in Cd response in D62B, whereas 18 terms involved in regulation were enriched in Wujin4B. Exogenous GSH further induced the expression of genes related to GSH metabolism and cell wall biosynthesis, leading to the retention of more Cd. Great responsiveness of cell wall biosynthesis and GSH metabolism could be considered the most important specific mechanisms for Cd retention in the roots of Cd-safe rice line.
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Affiliation(s)
- Keji Wang
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Haiying Yu
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Xizhou Zhang
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Daihua Ye
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Huagang Huang
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Yongdong Wang
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Zicheng Zheng
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China
| | - Tingxuan Li
- College of Resource, Sichuan Agricultural University, 211 Huimin Road, Chengdu, Sichuan 611130, China.
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Li X, Chen D, Li B, Yang Y, Yang Y. Combined transcriptomic, proteomic and biochemical approaches to identify the cadmium hyper-tolerance mechanism of turnip seedling leaves. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:22458-22473. [PMID: 33420687 DOI: 10.1007/s11356-020-11454-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 10/27/2020] [Indexed: 06/12/2023]
Abstract
Cadmium (Cd) pollution is a prominent environment problem, and great interests have been developed towards the molecular mechanism of Cd accumulation in plants. In this study, we conducted combined transcriptomic, proteomic and biochemical approaches to explore the detoxification of a Cd-hyperaccumulating turnip landrace exposed to 5 μM (T5) and 25 μM (T25) Cd treatments. A total of 1090 and 2111 differentially expressed genes (DEGs) and 161 and 303 differentially expressed proteins (DEPs) were identified in turnips under T5 and T25, respectively. However, poor correlations were observed in expression changes between mRNA and protein levels. The enriched KEGG pathways of DEGs with a high proportion (> 80%) of upregulated genes were focused on the flavonoid biosynthesis, sulphur metabolism and glucosinolate biosynthesis pathways, whereas those of DEPs were enriched on the glutathione metabolism pathway. This result suggests that these pathways contribute to Cd detoxification in turnips. Furthermore, induced antioxidant enzymes, heat stock proteins and stimulated protein acetylation modification seemed to play important roles in Cd tolerance in turnips. In addition, several metal transporters were found responsible for the Cd accumulation capacity of turnips. This study may serve as a basis for breeding low-Cd-accumulating vegetables for foodstuff or high-Cd-abstracting plants for phytoremediation.
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Affiliation(s)
- Xiong Li
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
| | - Di Chen
- School of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Boqun Li
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Ya Yang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Yongping Yang
- Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
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Soil Sulfur Sources Differentially Enhance Cadmium Tolerance in Indian Mustard (Brassica juncea L.). SOIL SYSTEMS 2021. [DOI: 10.3390/soilsystems5020029] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The effect of four soil-applied sulfur (100 mg S kg−1 soil (100S) and 200 mg S kg−1 soil (200S)) in different sources (elemental S, ammonium sulfate, gypsum or magnesium sulfate) in protecting mustard (Brassica juncea L. (Czern & Coss.)) from cadmium effects was studied. Based on the observed reduction in growth and photosynthesis in plants subjected to 100 and 200 mg Cd kg−1 soil, B. juncea cv. Giriraj was selected as the most Cd-tolerant among five cultivars (namely, Giriraj, RH-0749, Pusa Agrani, RH-406, and Pusa Tarak). Sulfur applied to soil mitigated the negative impact of Cd on sulfur assimilation, cell viability, and photosynthetic functions, with a lower lipid peroxidation, electrolyte leakage, and contents of reactive oxygen species (ROS: hydrogen peroxide, H2O2, and superoxide anion, O2•−). Generally, added S caused higher activity of antioxidant enzymes (ascorbate peroxidase, catalase and superoxide dismutase), contents of ascorbate (AsA) and reduced glutathione (GSH); increases in the activities of their regenerating enzymes (dehydroascorbate reductase and glutathione reductase); as well as rises in S assimilation, biosynthesis of non-protein thiols (NPTs), and phytochelatins (PCs). Compared to the other S-sources tested, elemental S more prominently protected B. juncea cv. Giriraj against Cd-impacts by minimizing Cd-accumulation and its root-to-shoot translocation; decreasing cellular ROS and membrane damage, and improving Cd-chelation (NPTs and PCs), so strengthening the defense machinery against Cd. The results suggest the use of elemental S for favoring the growth and development of cultivated plants also in Cd-contaminated agricultural soils.
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Liu J, Zhu N, Zhang Y, Ren T, Shao C, Shi R, Li X, Ju M, Ma T, Yu Q. Transcription profiling-guided remodeling of sulfur metabolism in synthetic bacteria for efficiently capturing heavy metals. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123638. [PMID: 32805554 DOI: 10.1016/j.jhazmat.2020.123638] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/30/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Heavy metal contamination is becoming a global problem threatening human health. Heavy metal removal by engineered microbes by cellular adsorption and uptake is a promising strategy for treatment of heavy metal contamination. However, this strategy is confronted with limited heavy metal-capturing elements. In this study, we performed a transcription profiling-guided strategy for construction of heavy metal-capturing synthetic bacteria. Transcription profiling of a heavy metal-tolerating Cupriavidus taiwanensis strain revealed up-regulation of sulfur metabolism-related operons (e.g., iscSAU and moaEDAB) by Pb2+ and Cd2+. A synthetic Escherichia coli strain, EcSSMO, was constructed by design of a synthetic sulfur metabolism operon (SSMO) based on iscSAU/moaEDAB. Biochemical analysis and X-ray photoelectron spectroscopy (XPS) revealed that the synthetic bacteria had remodeled sulfur metabolism and enhanced heavy metal-tolerating capacity, with higher surviving EcSSMO cells than the surviving control cells Ec0 (not containing SSMO) at 50 mg/L of Pb2+ and Cd2+ (>92 % versus <10 %). Moreover, EcSSMO exhibited much higher heavy metal-capturing capacity than Ec0, removing>90 % of Pb2+ and Cd2+ at 5 mg/L of Pb2+ and Cd2+, and >40 % of both heavy metals even at 50 mg/L of Pb2+ and Cd2+. This study reveals emphasizes feasibility of transcription profiling-guided construction of synthetic organisms by large-scale remodeling metabolic network.
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Affiliation(s)
- Jinpeng Liu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China; National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Nali Zhu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Youjun Zhang
- Tianjin North China Geological Exploration Bureau, 67, Guang-rui-xi-lu Rd., Tianjin, 300170, China; School of Environmental Science and Engineering, Tianjin University, 92, Weijin Rd., Nankai District, 300350, China
| | - Tongtong Ren
- Beijing Institute of Biological Products Company, Beijing, China
| | - Chaofeng Shao
- National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Rongguang Shi
- Agro-environmental Protection Institute Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Xiaohua Li
- Rural Energy & Environment Agency, Ministry of Agriculture and Rural Affairs, Beijing, 100125, China
| | - Meiting Ju
- National & Local Joint Engineering Research Center on Biomass Resource Utilization, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Ting Ma
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Qilin Yu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Department of Microbiology, College of Life Sciences, Nankai University, Tianjin 300071, China.
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Ahmad A, Khan WU, Ali Shah A, Yasin NA, Naz S, Ali A, Tahir A, Iram Batool A. Synergistic effects of nitric oxide and silicon on promoting plant growth, oxidative stress tolerance and reduction of arsenic uptake in Brassica juncea. CHEMOSPHERE 2021; 262:128384. [PMID: 33182105 DOI: 10.1016/j.chemosphere.2020.128384] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/09/2020] [Accepted: 09/16/2020] [Indexed: 05/17/2023]
Abstract
Arsenic (As) polluted food chain has become a serious issue for the growth and development of humans, animals and plants. Nitric oxide (NO) or silicon (Si) may mitigate As toxicity. However, the combined application of NO and Si in mitigating As uptake and phytotoxicity in Brassica juncea is unknown. Hence, the collegial effect of sodium nitroprusside (SNP), a NO donor and Si application on B. juncea growth, gas exchange parameters, antioxidant system and As uptake was examined in a greenhouse experiment. Arsenic toxicity injured cell membrane as signposted by the elevated level of malondialdehyde (MDA) and hydrogen peroxide (H2O2), thus decreasing the growth of stressed plants. Moreover, As stress negatively affected gas exchange parameters and antioxidative system of plants. However, NO or/and Si alleviated As induced oxidative stress through increasing the activity of superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR), glutathione S-transferase (GST), glutathione (GSH), along with thiol and proline synthesis. Furthermore, plants treated with co-application of NO and Si showed improved growth, gas attributes and decreased As uptake under As regimes. The current study highlights that NO and Si synergistically interact to mitigate detrimental effects of As stress through reducing As uptake. Our findings recommend combined NO and Si application in As spiked soils for improvement of plant growth and stress alleviation.
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Affiliation(s)
- Aqeel Ahmad
- Guangdong Key Laboratory for New Technology Research of Vegetables/ Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Waheed Ullah Khan
- College of Earth and Environmental Sciences, University of the Punjab, Lahore, Pakistan
| | - Anis Ali Shah
- Department of Botany, University of Narowal, Pakistan
| | | | - Shagufta Naz
- Department of Biotechnology, Lahore College for Women University, Pakistan
| | - Aamir Ali
- Department of Botany, University of Sargodha, Pakistan
| | - Arifa Tahir
- Department of Biotechnology, Lahore College for Women University, Pakistan
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Zhou C, Ma Q, Li S, Zhu M, Xia Z, Yu W. Toxicological effects of single and joint sulfamethazine and cadmium stress in soil on pakchoi (Brassica chinensis L.). CHEMOSPHERE 2021; 263:128296. [PMID: 33297238 DOI: 10.1016/j.chemosphere.2020.128296] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/05/2020] [Accepted: 09/07/2020] [Indexed: 06/12/2023]
Abstract
The combined pollution of heavy metals and antibiotics in soil has attracted increasing attention due to their negative effects on plant growth. The aims of this study were to evaluate the phytotoxicity of single and combined sulfamethazine (SMT) and cadmium (Cd), selected as target pollutants in soil, on growth and physiological response of pakchoi (Brassica chinensis L.). Results revealed that the soil spiked with 10 mg kg-1 Cd inhibited the pakchoi growth regardless of SMT addition. The combined effect of SMT and Cd stress on uptake of SMT or Cd by pakchoi were concerned with their combined concentration. The combined influence of high concentrations SMT and Cd (1 and 10 mg kg-1) exposure on the Cd content of pakchoi showed antagonistic effects and synergistic effects, respectively. Besides, oxidative substances and enzyme activity of pakchoi tissue were affected by Cd and SMT exposure in the soil, particularly by their joint stress. This mainly expressed as the increase of malondialdehyde (MDA), H2O2 content and antioxidant enzyme activity (superoxide dismutase (SOD), peroxidase (POD), catalase (CAT)), which could be ascribed to the induction of Cd and SMT stress. Additionally, the SMT-Cd combined stress caused more reduction in nutrients (vitamin C and sugar) of pakchoi than the correspondingly single Cd stress. In conclusion, the SMT and Cd in soil lead to their accumulation and oxidative damage in pakchoi, which disturb the antioxidant defense system and ultimately adversely affect growth and quality of pakchoi.
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Affiliation(s)
- Changrui Zhou
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiang Ma
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Shuailin Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Mengmeng Zhu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhuqing Xia
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wantai Yu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
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Liu S, Cui S, Zhang X, Wang Y, Mi G, Gao Q. Synergistic Regulation of Nitrogen and Sulfur on Redox Balance of Maize Leaves and Amino Acids Balance of Grains. FRONTIERS IN PLANT SCIENCE 2020; 11:576718. [PMID: 33343592 PMCID: PMC7746645 DOI: 10.3389/fpls.2020.576718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/23/2020] [Indexed: 06/12/2023]
Abstract
As a primary food crop, maize is widely grown around the world. However, the deficiency of essential amino acids, such as lysine, tryptophan, and methionine, results in poor nutritional quality of maize. In addition, the protein concentration of maize declines with the increase in yield, which further reduces the nutritional quality. Here, the photosynthesis of leaves, grain amino acid composition, and stoichiometry of N and S are explored. The results show that N and S maintained the redox balance by increasing the content of glutathione in maize leaves, thereby enhancing the photosynthetic rate and maize yield. Simultaneously, the synergy of N and S increased the grain protein concentration and promoted amino acid balance by increasing the cysteine concentration in maize grains. The maize yield, grain protein concentration, and concentration of essential amino acids, such as lysine, tryptophan, and methionine, could be simultaneously increased in the N:S ratio range of 11.0 to 12.0. Overall, the synergy of N and S simultaneously improved the maize yield and nutritional quality by regulating the redox balance of maize leaves and the amino acids balance of grains, which provides a new theoretical basis and practical method for sustainable production of maize.
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Affiliation(s)
- Shuoran Liu
- Key Laboratory of Sustainable Utilization of Soil Resources in The Commodity Grain Bases of Jilin Province, College of Resource and Environmental Sciences, Jilin Agricultural University, Changchun, China
| | - Shuai Cui
- Key Laboratory of Sustainable Utilization of Soil Resources in The Commodity Grain Bases of Jilin Province, College of Resource and Environmental Sciences, Jilin Agricultural University, Changchun, China
| | - Xue Zhang
- Key Laboratory of Sustainable Utilization of Soil Resources in The Commodity Grain Bases of Jilin Province, College of Resource and Environmental Sciences, Jilin Agricultural University, Changchun, China
| | - Yin Wang
- Key Laboratory of Sustainable Utilization of Soil Resources in The Commodity Grain Bases of Jilin Province, College of Resource and Environmental Sciences, Jilin Agricultural University, Changchun, China
| | - Guohua Mi
- College of Resources and Environmental Science, China Agricultural University, Beijing, China
| | - Qiang Gao
- Key Laboratory of Sustainable Utilization of Soil Resources in The Commodity Grain Bases of Jilin Province, College of Resource and Environmental Sciences, Jilin Agricultural University, Changchun, China
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Cornu JY, Bussière S, Coriou C, Robert T, Maucourt M, Deborde C, Moing A, Nguyen C. Changes in plant growth, Cd partitioning and xylem sap composition in two sunflower cultivars exposed to low Cd concentrations in hydroponics. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111145. [PMID: 32846296 DOI: 10.1016/j.ecoenv.2020.111145] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 05/22/2023]
Abstract
This study characterizes sunflower response to the levels of Cd encountered in moderately Cd-polluted soils. Two sunflower cultivars differing in their ability to sequestrate Cd in roots were exposed to low concentrations of Cd (0.5 nM or 100 nM) in hydroponics and sampled after 18 days (258 degree-days) when ten leaves were fully expanded. Plant growth, Cd uptake and partitioning among organs were monitored along with the ionomic (ICP-MS) and the metabolic (1H-NMR) composition of the xylem sap. Sunflower tolerance to Cd differed between the two cultivars. The cultivar with the highest ability to sequestrate Cd in roots (Kapllan) was more tolerant to Cd than the one with the lowest ability (ES RICA). The 23% penalization of plant growth observed at 100 nM in cultivar ES RICA was associated with reduced xylem loading fluxes of soluble sugars, perhaps pointing to disruption of carbohydrate metabolism. Retention of Cd in the stem was higher at 100 nM than at 0.5 nM in the Cd-sensitive cultivar ES RICA, which can be seen as a sunflower strategy to restrict the amount of Cd delivered to the leaves under Cd stress. No direct connection was found between the speciation of Cd in the xylem sap and the Cd translocation efficiency, although significant changes in the free ionic fraction of Cd were observed between the two cultivars at 0.5 nM. The relevance of these results in promoting the use of sunflower in phytomanagement of Cd-polluted soils is discussed.
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Affiliation(s)
- J Y Cornu
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France.
| | - S Bussière
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
| | - C Coriou
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
| | - T Robert
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
| | - M Maucourt
- INRAE, Univ. Bordeaux, UMR Fruit Biology and Pathology, F-33140, Villenave D'Ornon, France; PMB-Metabolome, INRAE, 2018. Bordeaux Metabolome Facility, France
| | - C Deborde
- INRAE, Univ. Bordeaux, UMR Fruit Biology and Pathology, F-33140, Villenave D'Ornon, France; PMB-Metabolome, INRAE, 2018. Bordeaux Metabolome Facility, France
| | - A Moing
- INRAE, Univ. Bordeaux, UMR Fruit Biology and Pathology, F-33140, Villenave D'Ornon, France; PMB-Metabolome, INRAE, 2018. Bordeaux Metabolome Facility, France
| | - C Nguyen
- INRAE, Bordeaux Sciences Agro, UMR ISPA, F-33140, Villenave D'Ornon, France
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Shi W, Liu W, Ma C, Zhang Y, Ding S, Yu W, Deng S, Zhou J, Li H, Luo ZB. Dissecting MicroRNA-mRNA Regulatory Networks Underlying Sulfur Assimilation and Cadmium Accumulation in Poplar Leaves. PLANT & CELL PHYSIOLOGY 2020; 61:1614-1630. [PMID: 32678905 DOI: 10.1093/pcp/pcaa084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 06/15/2020] [Indexed: 05/22/2023]
Abstract
The process of cadmium (Cd) accumulation and detoxification under different sulfur levels remains largely unknown in woody plants. To investigate the physiological and transcriptomic regulation mechanisms of poplars in response to different sulfate (S) supply levels and Cd exposure, we exposed Populus deltoides saplings to one of the low, moderate and high S levels together with either 0 or 50 µM Cd. Cd accumulation was decreased in low S-treated poplar leaves, and it tended to be increased in high S-supplied leaves under the Cd exposure condition. Sulfur nutrition was deficient in low S-supplied poplars, and it was improved in high S-treated leaves. Cd exposure resulted in lower sulfur level in the leaves supplied with moderate S, it exacerbated a Cd-induced sulfur decrease in low S-treated leaves and it caused a higher sulfur concentration in high S-supplied leaves. In line with the physiological changes, a number of mRNAs and microRNAs (miRNAs) involved in Cd accumulation and sulfur assimilation were identified and the miRNA-mRNA networks were dissected. In the networks, miR395 and miR399 members were identified as hub miRNAs and their targets were ATP sulfurylase 3 (ATPS3) and phosphate 2 (PHO2), respectively. These results suggest that Cd accumulation and sulfur assimilation are constrained by low and enhanced by high S supply, and Cd toxicity is aggravated by low and relieved by high S in poplar leaves, and that miRNA-mRNA regulatory networks play pivotal roles in sulfur-mediated Cd accumulation and detoxification in Cd-exposed poplars.
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Affiliation(s)
- Wenguang Shi
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Wenzhe Liu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Chaofeng Ma
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yuhong Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- Annoroad Gene Technology Co., Ltd, 6 Kechuang Road, Beijing 100176, China
| | - Shen Ding
- College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wenjian Yu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Shurong Deng
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Jing Zhou
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Hong Li
- Postgraduate School, Chinese Academy of Forestry, Beijing 100091, China
| | - Zhi-Bin Luo
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
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Han X, Zhang Y, Yu M, Zhang J, Xu D, Lu Z, Qiao G, Qiu W, Zhuo R. Transporters and ascorbate-glutathione metabolism for differential cadmium accumulation and tolerance in two contrasting willow genotypes. TREE PHYSIOLOGY 2020; 40:1126-1142. [PMID: 32175583 DOI: 10.1093/treephys/tpaa029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 01/14/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
Salix matsudana Koidz is a low cadmium (Cd)-accumulating willow, whereas its cultivated variety, Salix matsudana var. matsudana f. umbraculifera Rehd., is a high Cd-accumulating and tolerant willow (HCW). The physiological and molecular mechanisms underlying differential Cd accumulation and tolerance in the two Salix species are poorly understood. Here, we confirmed that the differential Cd translocation capacity from roots to the shoots leads to the differential Cd accumulation in their aboveground parts between these two willow genotypes. Cadmium accumulation happens preferentially in the transport pathway, and Cd is mainly located in the vacuolar, cell wall and intercellular space in HCW bark by cadmium location analysis at tissue and subcellular levels. Comparative transcriptome analysis revealed that higher expressions of several metal transporter genes (ATP-binding cassette transporters, K+ transporters/channels, yellow stripe-like proteins, zinc-regulated transporter/iron-regulated transporter-like proteins, etc.) are involved in root uptake and translocation capacity in HCW; meanwhile, ascorbate-glutathione metabolic pathways play essential roles in Cd detoxification and higher tolerance of the Cd-accumulator HCW. These results lay the foundation for further understanding the molecular mechanisms of Cd accumulation in woody plants and provide new insights into molecular-assisted-screening woody plant varieties for phytoremediation.
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Affiliation(s)
- Xiaojiao Han
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
| | - Yunxing Zhang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
- School of Architectural and Artistic Design, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China
| | - Miao Yu
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
| | - Jin Zhang
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Dong Xu
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
| | - Zhuchou Lu
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
| | - Guirong Qiao
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
| | - Wenmin Qiu
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
| | - Renying Zhuo
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, P. R. China
- Key Laboratory of Tree Breeding of Zhejiang Province, The Research Institute of Subtropical of Forestry, Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, P. R. China
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Yun Z, Gao H, Chen X, Chen Z, Zhang Z, Li T, Qu H, Jiang Y. Effects of hydrogen water treatment on antioxidant system of litchi fruit during the pericarp browning. Food Chem 2020; 336:127618. [PMID: 32771896 DOI: 10.1016/j.foodchem.2020.127618] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/03/2020] [Accepted: 07/17/2020] [Indexed: 12/14/2022]
Abstract
Litchi fruit were exposed to 0.7 PPM hydrogen water (HW) before storage at 25 ± 1 ℃. HW treatment delayed the pericarp browning and maintained the total soluble solids (TSS) of litchi fruit. Then, a total of 25 antioxidant system-related characters were determined to evaluate the effects of HW on antioxidant system during pericarp browning. Compared with control pericarp, the pericarp of HW-treated litchi fruit exhibited higher levels of superoxide radical (O2-·) scavenging activity, glutathione (GSH), monodehydroascorbate reductase (MDHAR), polyphenol oxidase (PPO) and total flavonoids during whole storage, higher levels of hydrogen peroxide (H2O2), catalase (CAT), glutathione disulfide (GSSG), ascorbate oxidase (AAO) and total phenols only on day 1, and higher levels of ascorbate peroxidase (APX), total anthocyanin, glutathione reductase (GR) and glutathione peroxidases (GPX) at later stage of storage. Those HW-induced antioxidant system-related characters might directly or indirectly enhanced the antioxidant capacity and delayed the pericarp browning of litchi.
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Affiliation(s)
- Ze Yun
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
| | - Huijun Gao
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China.
| | - Xi Chen
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
| | - Zhongsuzhi Chen
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
| | - Zhengke Zhang
- Hainan University, College of Food Science and Technology, Haikou, China
| | - Taotao Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
| | - Hongxia Qu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
| | - Yueming Jiang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
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Liu M, Liu X, Kang J, Korpelainen H, Li C. Are males and females of Populus cathayana differentially sensitive to Cd stress? JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122411. [PMID: 32114141 DOI: 10.1016/j.jhazmat.2020.122411] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
This study clarifies the mechanisms of Cd uptake, translocation and detoxification in Populus cathayana Rehder females and males, and reveals a novel strategy for dioecious plants to cope with Cd contamination. Females exhibited a high degree of Cd uptake and root-to-shoot translocation, while males showed extensive Cd accumulation in roots, elevated antioxidative capacity, and effective cellular and bark Cd sequestration. Our study also found that Cd is largely located in epidermal and cortical tissues of male roots and leaves, while in females, more Cd was present in vascular tissues of roots and leaves, as well as in leaf mesophyll. In addition, the distributions of sulphur (S) and phosphorus (P) were very similar as that of Cd in males, but the associations were weak in females. Scanning electron microscopy and energy spectroscopy analyses suggested that the amounts of tissue Cd were positively correlated with P and S amounts in males, but not in females (a weak correlation between S and Cd). Transcriptional data suggested that Cd stress promoted the upregulation of genes related to Cd uptake and translocation in females, and that of genes related to cell wall biosynthesis, metal tolerance and secondary metabolism in males. Our results indicated that coordinated physiological, microstructural and transcriptional responses to Cd stress endowed superior Cd tolerance in males compared with females, and provided new insights into mechanisms underlying sexually differential responses to Cd stress.
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Affiliation(s)
- Miao Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Xingxing Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jieyu Kang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Helena Korpelainen
- Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, P.O. Box 27, FI-00014, Finland
| | - Chunyang Li
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
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Zinc Oxide Nanoparticles Application Alleviates Arsenic (As) Toxicity in Soybean Plants by Restricting the Uptake of as and Modulating Key Biochemical Attributes, Antioxidant Enzymes, Ascorbate-Glutathione Cycle and Glyoxalase System. PLANTS 2020; 9:plants9070825. [PMID: 32630094 PMCID: PMC7411960 DOI: 10.3390/plants9070825] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/19/2020] [Accepted: 06/20/2020] [Indexed: 01/24/2023]
Abstract
Accumulation of arsenic (As) in soils is increasing consistently day-by-day, which has resulted in increased toxicity of this element in various crop plants. Arsenic interferes with several plant metabolic processes at molecular, biochemical and physiological levels, which result in reduced plant productivity. Hence, the introduction of novel ameliorating agents to combat this situation is the need of the hour. The present study was designed to examine the effect of zinc oxide nanoparticles (ZnO-NPs) in As-stressed soybean plants. Various plant growth factors and enzymes were studied at varying concentrations of As and ZnO-NPs. Our results showed that with the application of ZnO-NPs, As concentration declined in both root and shoot of soybean plants. The lengths of shoot and root, net photosynthetic rate, transpiration, stomatal conductance, photochemical yield and other factors declined with an increase in external As level. However, the application of ZnO-NPs to the As-stressed soybean plants resulted in a considerable increase in these factors. Moreover, the enzymes involved in the ascorbate-glutathione cycle including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR) showed a significant increase in their activity with the application of ZnO-NPs to the As-stressed plants. Hence, our study confirms the significance of ZnO-NPs in alleviating the toxicity of As in soybean plants.
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Kaya C, Ashraf M, Alyemeni MN, Ahmad P. The role of nitrate reductase in brassinosteroid-induced endogenous nitric oxide generation to improve cadmium stress tolerance of pepper plants by upregulating the ascorbate-glutathione cycle. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 196:110483. [PMID: 32247238 DOI: 10.1016/j.ecoenv.2020.110483] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/29/2020] [Accepted: 03/13/2020] [Indexed: 05/03/2023]
Abstract
A study was performed to assess if nitrate reductase (NR) participated in brassinosteroid (BR)-induced cadmium (Cd) stress tolerance primarily by accelerating the ascorbate-glutathione (AsA-GSH) cycle. Prior to initiating Cd stress (CdS), the pepper plants were sprayed with 0.5 μM 24-epibrassinolide (EBR) every other day for 10 days. Thereafter the seedlings were subjected to control or CdS (0.1 mM CdCl2) for four weeks. Cadmium stress decreased the plant growth related attributes, water relations as well as the activities of monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR), but enhanced proline content, leaf Cd2+ content, oxidative stress-related traits, activities of ascorbate peroxidase (APX) and glutathione reductase (GR), and the activities of antioxidant defence system-related enzymes as well as NR activity and endogenous nitric oxide content. EBR reduced leaf Cd2+ content and oxidative stress-related parameters, enhanced plant growth, regulated water relations, and led to further increases in proline content, AsA-GSH cycle-related enzymes' activities, antioxidant defence system-related enzymes as well as NR activity and endogenous nitric oxide content. The EBR and the inhibitor of NR (tungstate) reversed the positive effects of EBR by reducing NO content, showing that NR could be a potential contributor of EBR-induced generation of NO which plays an effective role in tolerance to CdS in pepper plants by accelerating the AsA-GSH cycle and antioxidant enzymes.
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Affiliation(s)
- Cengiz Kaya
- Soil Science and Plant Nutrition Department, Agriculture Faculty, Harran University, Sanliurfa, Turkey
| | | | - Mohammed Nasser Alyemeni
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Parvaiz Ahmad
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia; Department of Botany, S.P. College Srinagar, Jammu and Kashmir, India.
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Li H, Pu P, Li X, Gong Y, An D, Zhang L, Lv J. Sulfur application reduces cadmium uptake in edible parts of pakchoi (Brassica chinensis L.) by cadmium chelation and vacuolar sequestration. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 194:110402. [PMID: 32151867 DOI: 10.1016/j.ecoenv.2020.110402] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/26/2020] [Accepted: 02/26/2020] [Indexed: 05/24/2023]
Abstract
Sulfur (S) application in pakchoi (Brassica chinensis L.) cultivation is vital for reducing cadmium (Cd) accumulation in the plants. However, the mechanism of S application on Cd uptake and translocation in pakchoi is unclear. In this study, a hydroponic experiment was performed to investigate the effects of S application on Cd accumulation in pakchoi at one Cd concentration (50 μM, in comparison to the control condition, 0 μM) and three S levels (0, 2, 4 mM). The results showed that excessive S application (4 mM) reduced Cd accumulation and alleviated pakchoi growth inhibition caused by Cd stress in shoots and roots. With increased S application, the proportion of Cd in the vacuolar fraction and the proportion of NaCl-extractable Cd increased in roots. Additionally, S application increased the content of glutathione (GSH) and phytochelatins (PCs). The reduced Cd uptake and accumulation in pakchoi shoots could have been due to increased Cd chelation and vacuolar sequestration in roots. In addition, sufficient S application (2 mM) increased the expression of γ-glutamylcysteine synthetase (GSH1) and nicotinamide synthase (NAS) in roots, and excessive S application upregulated the expression of ATP sulfurylase (ATPS) and phytochelatin synthase (PCs). This study provides evidence for the mechanism of mitigating Cd toxicity in pakchoi and will be helpful for developing strategies to reduce Cd accumulation in the edible parts of pakchoi through S fertilizer application.
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Affiliation(s)
- Hailan Li
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Peng Pu
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiaorui Li
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanzhen Gong
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, China
| | - Disheng An
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Lixin Zhang
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Jinyin Lv
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.
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Wang L, Li R, Yan X, Liang X, Sun Y, Xu Y. Pivotal role for root cell wall polysaccharides in cultivar-dependent cadmium accumulation in Brassica chinensis L. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 194:110369. [PMID: 32135380 DOI: 10.1016/j.ecoenv.2020.110369] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/17/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
Polysaccharides are the main components of plant cell walls in which they make an important contribution to cadmium (Cd) fixation. However, knowledge regarding the role of root cell wall polysaccharides in Cd accumulation in low-Cd cultivars is limited. Here, we compared the differences in root cell wall polysaccharides between two cultivars of Brassica chinensis L. (pakchoi) with different Cd accumulation abilities. A hydroponic experiment was conducted using low- (Huajun 2) and high-Cd (Hanlv) pakchoi cultivars. We investigated Cd subcellular distribution and Cd accumulation in cell wall polysaccharides and examined polysaccharide modifications in root cell walls by Fourier transform infrared spectroscopy. A Cd adsorption kinetics experiment was conducted to examine the connection between Cd-induced polysaccharide modifications and Cd fixation by cell walls. Amounts of Cd were significantly higher and more Cd was bound to cell walls in the roots of Huajun 2 than in those of Hanlv. These results indicated that the greater Cd retention capacity of the root cell wall in Huajun 2 accounted for the low Cd accumulation in the shoot. Up to 79.4% and 32.1% of cell-wall-bound Cd was found in the pectin and hemicellulose 1, respectively, and higher amounts of Cd were found in these cell wall components of Huajun 2 than in those of Hanlv. Exposure to Cd significantly increased amounts of pectin and hemicellulose 1 in both pakchoi cultivars, but the pectin levels were significantly higher in Huajun 2 than in Hanlv. Huajun 2 had higher pectin methylesterase (PME) activity and a lower degree of pectin methyl-esterification (DM) than Hanlv, although Cd treatments resulted in increased PME activity and decreased DM in both cultivars. The higher Cd treatment (44.5 μM) resulted in enhanced Cd-binding capacity in root cell walls of the two cultivars with higher Cd adsorption levels in the root cell wall of Huajun 2. These results indicate that differences in the amount of cell wall polysaccharide and DM play key roles in establishing the genotypic differences underlying Cd accumulation in pakchoi. These findings conduce to a better understanding of the physiological mechanisms underlying low Cd accumulation in pakchoi and the breeding of new, low-Cd pakchoi cultivars.
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Affiliation(s)
- Lin Wang
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Ran Li
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Xiuxiu Yan
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Xuefeng Liang
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Yuebing Sun
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
| | - Yingming Xu
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
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Shi G, Lu H, Liu H, Lou L, Zhang P, Song G, Zhou H, Ma H. Sulfate application decreases translocation of arsenic and cadmium within wheat (Triticum aestivum L.) plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 713:136665. [PMID: 31955111 DOI: 10.1016/j.scitotenv.2020.136665] [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: 11/25/2019] [Revised: 12/31/2019] [Accepted: 01/11/2020] [Indexed: 06/10/2023]
Abstract
Arsenic (As) and cadmium (Cd) typically exhibit divergent fates in soil, which complicates efforts to decrease As and Cd accumulation in the edible parts of crops. Here, we performed pot experiments to examine the effect of sulfate application on As and Cd accumulation in the grain of wheat grown in contaminated soil. Compared to the control (no sodium sulfate addition), application of 120 mg kg-1 sodium sulfate decreased the rhizosphere soil pH from 7.27 to 7.10 and increased the soil extractable Cd concentration; however, it did not significantly influence the soil extractable As concentration. However, sodium sulfate addition decreased As and Cd concentrations in wheat grain, in association with decreased As and Cd translocation from root and straw to grain, rather than from soil to root. Furthermore, sodium sulfate addition significantly decreased membrane lipid peroxidation and enhanced photosynthesis, while increasing the uptake of nitrogen, phosphorus, and sulfur. These effects increased the growth and grain weight of plants grown in As and Cd co-contaminated soil. Our findings provide insight into the mechanisms by which sulfate modulates As and Cd uptake and translocation in wheat; moreover, our findings will enable formulation of strategies to decrease As and Cd concentrations in the grain of wheat grown in As and Cd co-contaminated soil.
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Affiliation(s)
- Gaoling Shi
- Provincial Key Laboratory of Agrobiology, and Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China; Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China; College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Haiying Lu
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Huan Liu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Laiqing Lou
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Pingping Zhang
- Provincial Key Laboratory of Agrobiology, and Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China
| | - Guicheng Song
- Provincial Key Laboratory of Agrobiology, and Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China
| | - Huimin Zhou
- Provincial Key Laboratory of Agrobiology, and Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China
| | - Hongxiang Ma
- Provincial Key Laboratory of Agrobiology, and Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, PR China.
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Li Y, Guo P, Liu Y, Su H, Zhang Y, Deng J, Wu Y. Effects of sulfur on the toxicity of cadmium to Folsomia candida in red earth and paddy soil in southern Fujian. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121683. [PMID: 31771886 DOI: 10.1016/j.jhazmat.2019.121683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 11/11/2019] [Accepted: 11/11/2019] [Indexed: 05/23/2023]
Abstract
Sulfur has been shown to mitigate the toxic effects of metals on soil organisms. Here we report the effects of sulfur on cadmium toxicity to the collembolan Folsomia candida in soil, including its effects on glutathione (GSH) level, catalase (CAT) activity and metallothionein (MT) content. Following sulfur treatment, catalase, glutathione and metallothionein activities were all significantly increased in cadmium-contaminated soil, and as the cadmium concentration increased, the activities decreased. In addition, because of the reducing effects of pH and organic matter on cadmium bioavailability, the bioavailable cadmium varied among soils of different pH values and organic matter contents, causing the catalase activity, glutathione content and metallothionein levels of F. candida to vary among soils. Our study suggests that sulfur can affect the toxicity of certain concentrations of cadmium and that soil properties are very important to consider. This study provides insight into the effects of sulfur application on soil animals.
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Affiliation(s)
- Yanqi Li
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen 361021, China
| | - Peiyong Guo
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen 361021, China.
| | - Yongjun Liu
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen 361021, China
| | - Haitao Su
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen 361021, China
| | - Yuxuan Zhang
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen 361021, China
| | - Jun Deng
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen 361021, China
| | - Yanmei Wu
- Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen 361021, China
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Yang G, Zhong H, Liu X, Liu C, Li S, Hou L, Liu Y, Wang Y, Ren W, Duan C. Arsenic Distribution, Accumulation and Tolerance Mechanisms of Typha angustifolia in Different Phenological Growth Stages. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 104:358-365. [PMID: 31975014 DOI: 10.1007/s00128-020-02796-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
Variations of phytoaccumulation and tolerance in different growth stages of plant are important factors for effective removal of pollutants in phytoremediation. The present work investigated arsenic (As) accumulation, As-tolerance and the physiological tolerance mechanisms of Typha angustifolia under different As-level during the seedling, fast-growing and breeding stages. The results showed that As mainly distributed in the underground part and total As accumulation increased with growth stages. Maximum growth rates under lower As occurred in seedling stage, whereas occurred in breeding stage under higher As. T. angustifolia exhibited the highest tolerance ability under 150 mg kg-1 As and tolerance index (TI) varied from seedling to breeding stages. During seedling stage, TI was affected by plant height (Hshoot) and net photosynthesis, which control biomass production. During fast-growing stage, Hshoot and root glutathione (GSH) co-regulated plant As-tolerance. During breeding stage, physiological metabolic processes, especially GSH-mediated processes, played a critical role in improving plant As-tolerance.
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Affiliation(s)
- Guiying Yang
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, China
- School of Ecology and Environment, Southwest Forestry University, Kunming, China
| | - Huan Zhong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China
| | - Xue Liu
- School of Ecology and Environment, Southwest Forestry University, Kunming, China
| | - Chang'e Liu
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Research Centre of Plateau Lake Ecological Restoration and Watershed Management, Yunnan University, Kunming, China
| | - Shiyu Li
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, China
- Yunnan International Joint Research Centre of Plateau Lake Ecological Restoration and Watershed Management, Yunnan University, Kunming, China
| | - Lei Hou
- School of Ecology and Environment, Southwest Forestry University, Kunming, China
| | - Yungen Liu
- School of Ecology and Environment, Southwest Forestry University, Kunming, China
| | - Yan Wang
- School of Ecology and Environment, Southwest Forestry University, Kunming, China
| | - Wei Ren
- School of Ecology and Environment, Southwest Forestry University, Kunming, China
| | - Changqun Duan
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming, China.
- Yunnan International Joint Research Centre of Plateau Lake Ecological Restoration and Watershed Management, Yunnan University, Kunming, China.
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Jiang M, Jiang J, Li S, Li M, Tan Y, Song S, Shu Q, Huang J. Glutamate alleviates cadmium toxicity in rice via suppressing cadmium uptake and translocation. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121319. [PMID: 31607581 DOI: 10.1016/j.jhazmat.2019.121319] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/17/2019] [Accepted: 09/24/2019] [Indexed: 05/14/2023]
Abstract
Cadmium (Cd), a naturally occurring heavy metal, is toxic to animals and plants. Minimization of Cd in rice grain is important to human health since rice is the main source of Cd intake for human populations feeding on it as staple food. Glutamate (Glu) is reportedly involved in plant abiotic stress responses, whereas the underlying molecular mechanism remains poorly understood. In this study, we showed that supplement of Glu, but not glutamine, significantly alleviated Cd toxicity in hydroponically grown rice plants. Cd accumulation was reduced by 44.1% and 65.6% in root and shoot of rice plants respectively, after Glu supplementation (3 mM). Glu supplement restored chlorophyll biosynthesis and significantly ameliorated Cd-induced oxidative stress with reduced levels of H2O2, 1O2, MDA, and increased activities of major anti-oxidant enzymes, catalase, peroxidase and glutathione S-transferase. Levels of stress-associated free amino acids proline, arginine and γ-aminobutyric acid were also reduced after Glu supplement. We further demonstrated that Glu supplement suppressed the Cd-induced expression of metal transporter genes OsNramp1, OsNramp5, OsIRT1, OsIRT2, OsHMA2 and OsHMA3 in roots of Cd-treated plants. Taken together, our results suggest that Glu supplement could alleviate Cd toxicity in rice by suppressing Cd uptake and translocation.
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Affiliation(s)
- Meng Jiang
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China; Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China; Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jie Jiang
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shan Li
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China; Analysis Center of Agrobiology and Environmental Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Mei Li
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China; Analysis Center of Agrobiology and Environmental Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yuanyuan Tan
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shiyong Song
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Qingyao Shu
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China; Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China.
| | - Jianzhong Huang
- National Key Laboratory of Rice Biology, Institute of Crop Sciences, Zhejiang University, Hangzhou, 310058, China; Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou, 310058, China.
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Cui W, Yao P, Pan J, Dai C, Cao H, Chen Z, Zhang S, Xu S, Shen W. Transcriptome analysis reveals insight into molecular hydrogen-induced cadmium tolerance in alfalfa: the prominent role of sulfur and (homo)glutathione metabolism. BMC PLANT BIOLOGY 2020; 20:58. [PMID: 32019510 PMCID: PMC7001311 DOI: 10.1186/s12870-020-2272-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 01/29/2020] [Indexed: 05/14/2023]
Abstract
BACKGROUND Hydrogen gas (H2) is hypothesised to play a role in plants that are coping with stresses by regulating signal transduction and gene expression. Although the beneficial role of H2 in plant tolerance to cadmium (Cd) has been investigated previously, the corresponding mechanism has not been elucidated. In this report, the transcriptomes of alfalfa seedling roots under Cd and/or hydrogen-rich water (HRW) treatment were first analysed. Then, the sulfur metabolism pathways were focused on and further investigated by pharmacological and genetic approaches. RESULTS A total of 1968 differentially expressed genes (DEGs) in alfalfa seedling roots under Cd and/or HRW treatment were identified by RNA-Seq. The DEGs were classified into many clusters, including glutathione (GSH) metabolism, oxidative stress, and ATP-binding cassette (ABC) transporters. The results validated by RT-qPCR showed that the levels of relevant genes involved in sulfur metabolism were enhanced by HRW under Cd treatment, especially the genes involved in (homo)glutathione metabolism. Additional experiments carried out with a glutathione synthesis inhibitor and Arabidopsis thaliana cad2-1 mutant plants suggested the prominent role of glutathione in HRW-induced Cd tolerance. These results were in accordance with the effects of HRW on the contents of (homo)glutathione and (homo)phytochelatins and in alleviating oxidative stress under Cd stress. In addition, the HRW-induced alleviation of Cd toxicity might also be caused by a decrease in available Cd in seedling roots, achieved through ABC transporter-mediated secretion. CONCLUSIONS Taken together, the results of our study indicate that H2 regulated the expression of genes relevant to sulfur and glutathione metabolism and enhanced glutathione metabolism which resulted in Cd tolerance by activating antioxidation and Cd chelation. These results may help to elucidate the mechanism governing H2-induced Cd tolerance in alfalfa.
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Affiliation(s)
- Weiti Cui
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
| | - Ping Yao
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jincheng Pan
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
| | - Chen Dai
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
| | - Hong Cao
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
| | - Zhiyu Chen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
| | - Shiting Zhang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
| | - Sheng Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014 China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 China
- Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240 China
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