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Liu X, Zhang H, Zhang W, Jia Q, Chen X, Chen H. Comparative transcriptome analysis between two different cadmium-accumulating genotypes of soybean (Glycine max) in response to cadmium stress. BMC Genom Data 2024; 25:43. [PMID: 38710997 DOI: 10.1186/s12863-024-01226-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 04/22/2024] [Indexed: 05/08/2024] Open
Abstract
BACKGROUND Cadmium (Cd) is extremely toxic and non-essential for plants. Different soybean varieties differ greatly in their Cd accumulation ability, but little is known about the underlying molecular mechanisms. RESULTS Here, we performed transcriptomic analysis using Illumina pair-end sequencing on root tissues from two soybean varieties (su8, high-Cd-accumulating (HAS) and su7, low Cd-accumulating (LAS)) grown with 0 or 50 μM CdSO4. A total of 18.76 million clean reads from the soybean root samples were obtained after quality assessment and data filtering. After Cd treatment, 739 differentially expressed genes (DEGs; 265 up and 474 down) were found in HAS; however, only 259 DEGs (88 up and 171 down) were found in LAS, and 64 genes were same between the two varieties. Pathway enrichment analysis suggested that after cadmium treatment, the DEGs between LAS and HAS were mainly enriched in glutathione metabolism and plant-pathogen interaction pathways. KEGG analysis showed that phenylalanine metabolism responding to cadmium stress in LAS, while ABC transporters responding to cadmium stress in HAS. Besides we found more differential expressed heavy metal transporters such as ABC transporters and zinc transporters in HAS than LAS, and there were more transcription factors differently expressed in HAS than LAS after cadmium treatment in two soybean varieties, eg. bHLH transcription factor, WRKY transcription factor and ZIP transcription factor. CONCLUSIONS Findings from this study will shed new insights on the underlying molecular mechanisms behind the Cd accumulation in soybean.
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Affiliation(s)
- Xiaoqing Liu
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Hongmei Zhang
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Wei Zhang
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Qianru Jia
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Xin Chen
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
| | - Huatao Chen
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
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Cordeiro IF, Lemes CGDC, Sanchez AB, da Silva AK, de Paula CH, de Matos RC, Ribeiro DF, de Matos JP, Garcia CCM, Beirão M, Becker CG, Pires MRS, Moreira LM. Amphibian tolerance to arsenic: microbiome-mediated insights. Sci Rep 2024; 14:10193. [PMID: 38702361 PMCID: PMC11068734 DOI: 10.1038/s41598-024-60879-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 04/29/2024] [Indexed: 05/06/2024] Open
Abstract
Amphibians are often recognized as bioindicators of healthy ecosystems. The persistence of amphibian populations in heavily contaminated environments provides an excellent opportunity to investigate rapid vertebrate adaptations to harmful contaminants. Using a combination of culture-based challenge assays and a skin permeability assay, we tested whether the skin-associated microbiota may confer adaptive tolerance to tropical amphibians in regions heavily contaminated with arsenic, thus supporting the adaptive microbiome principle and immune interactions of the amphibian mucus. At lower arsenic concentrations (1 and 5 mM As3+), we found a significantly higher number of bacterial isolates tolerant to arsenic from amphibians sampled at an arsenic contaminated region (TES) than from amphibians sampled at an arsenic free region (JN). Strikingly, none of the bacterial isolates from our arsenic free region tolerated high concentrations of arsenic. In our skin permeability experiment, where we tested whether a subset of arsenic-tolerant bacterial isolates could reduce skin permeability to arsenic, we found that isolates known to tolerate high concentrations of arsenic significantly reduced amphibian skin permeability to this metalloid. This pattern did not hold true for bacterial isolates with low arsenic tolerance. Our results describe a pattern of environmental selection of arsenic-tolerant skin bacteria capable of protecting amphibians from intoxication, which helps explain the persistence of amphibian populations in water bodies heavily contaminated with arsenic.
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Affiliation(s)
- Isabella Ferreira Cordeiro
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | | | - Angélica Bianchini Sanchez
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Ana Karla da Silva
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Camila Henriques de Paula
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Rosilene Cristina de Matos
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Dilson Fagundes Ribeiro
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Jéssica Pereira de Matos
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Camila Carrião Machado Garcia
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
- Laboratório de Genômica e Interação Bactérias-Ambiente, Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Marina Beirão
- Departamento de Biodiversidade Evolução e Meio Ambiente, Instituto de Ciências Biológicas, Universidade Federal de Ouro Preto, Belo Horizonte, MG, 31270-901, Brazil
| | - C Guilherme Becker
- Department of Biology, One Health Microbiome Center, Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, 16802, USA
| | - Maria Rita Silvério Pires
- Departamento de Biodiversidade Evolução e Meio Ambiente, Instituto de Ciências Biológicas, Universidade Federal de Ouro Preto, Belo Horizonte, MG, 31270-901, Brazil
| | - Leandro Marcio Moreira
- Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil.
- Laboratório de Genômica e Interação Bactérias-Ambiente, Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil.
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3
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Deng S, Zhang X, Zhu Y, Zhuo R. Recent advances in phyto-combined remediation of heavy metal pollution in soil. Biotechnol Adv 2024; 72:108337. [PMID: 38460740 DOI: 10.1016/j.biotechadv.2024.108337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 11/14/2023] [Accepted: 03/05/2024] [Indexed: 03/11/2024]
Abstract
The global industrialization and modernization have witnessed a rapid progress made in agricultural production, along with the issue of soil heavy metal (HM) pollution, which has posed severe threats to soil quality, crop yield, and human health. Phytoremediation, as an alternative to physical and chemical methods, offers a more cost-effective, eco-friendly, and aesthetically appealing means for in-situ remediation. Despite its advantages, traditional phytoremediation faces challenges, including variable soil physicochemical properties, the bioavailability of HMs, and the slow growth and limited biomass of plants used for remediation. This study presents a critical overview of the predominant plant-based HM remediation strategies. It expounds upon the mechanisms of plant absorption, translocation, accumulation, and detoxification of HMs. Moreover, the advancements and practical applications of phyto-combined remediation strategies, such as the addition of exogenous substances, genetic modification of plants, enhancement by rhizosphere microorganisms, and intensification of agricultural technologies, are synthesized. In addition, this paper also emphasizes the economic and practical feasibility of some strategies, proposing solutions to extant challenges in traditional phytoremediation. It advocates for the development of cost-effective, minimally polluting, and biocompatible exogenous substances, along with the careful selection and application of hyperaccumulating plants. We further delineate specific future research avenues, such as refining genetic engineering techniques to avoid adverse impacts on plant growth and the ecosystem, and tailoring phyto-combined strategies to diverse soil types and HM pollutants. These proposed directions aim to enhance the practical application of phytoremediation and its integration into a broader remediation framework, thereby addressing the urgent need for sustainable soil decontamination and protection of ecological and human health.
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Affiliation(s)
- Shaoxiong Deng
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, PR China
| | - Xuan Zhang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Yonghua Zhu
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, PR China
| | - Rui Zhuo
- Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410082, PR China; Hunan Provincial Certified Enterprise Technology Center, Hunan Xiangjiao Liquor Industry Co., Ltd., Shaoyang 422000, PR China.
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4
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Pahari S, Vaid N, Soolanayakanahally R, Kagale S, Pasha A, Esteban E, Provart N, Stobbs JA, Vu M, Meira D, Karunakaran C, Boda P, Prasannakumar MK, Nagaraja A, Jain AK. Nutri-cereal tissue-specific transcriptome atlas during development: Functional integration of gene expression to identify mineral uptake pathways in little millet (Panicum sumatrense). Plant J 2024. [PMID: 38576267 DOI: 10.1111/tpj.16749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 03/08/2024] [Accepted: 03/14/2024] [Indexed: 04/06/2024]
Abstract
Little millet (Panicum sumatrense Roth ex Roem. & Schult.) is an essential minor millet of southeast Asia and Africa's temperate and subtropical regions. The plant is stress-tolerant, has a short life cycle, and has a mineral-rich nutritional profile associated with unique health benefits. We report the developmental gene expression atlas of little millet (genotype JK-8) from ten tissues representing different stages of its life cycle, starting from seed germination and vegetative growth to panicle maturation. The developmental transcriptome atlas led to the identification of 342 827 transcripts. The BUSCO analysis and comparison with the transcriptomes of related species confirm that this study presents high-quality, in-depth coverage of the little millet transcriptome. In addition, the eFP browser generated here has a user-friendly interface, allowing interactive visualizations of tissue-specific gene expression. Using these data, we identified transcripts, the orthologs of which in Arabidopsis and rice are involved in nutrient acquisition, transport, and response pathways. The comparative analysis of the expression levels of these transcripts holds great potential for enhancing the mineral content in crops, particularly zinc and iron, to address the issue of "hidden hunger" and to attain nutritional security, making it a valuable asset for translational research.
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Affiliation(s)
- Shankar Pahari
- Saskatoon Research and Development Centre, Agriculture and Agri-Food Canada, Saskatoon, Saskatchewan, Canada
| | - Neha Vaid
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Raju Soolanayakanahally
- Saskatoon Research and Development Centre, Agriculture and Agri-Food Canada, Saskatoon, Saskatchewan, Canada
| | - Sateesh Kagale
- Aquatic and Crop Resource Development, National Research Council Canada, Saskatoon, Saskatchewan, Canada
| | - Asher Pasha
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - Eddi Esteban
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | - Nicholas Provart
- Department of Cell and Systems Biology, University of Toronto, Toronto, Ontario, Canada
| | | | - Miranda Vu
- Canadian Light Source Inc, Saskatoon, Saskatchewan, Canada
| | - Debora Meira
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, United States
| | | | - Praveen Boda
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore, India
| | | | - Alur Nagaraja
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore, India
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Thakur M, Verma R, Kumar D, Das PP, Dhalaria R, Kumar A, Kuca K, Azizov S, Kumar D. Revisiting the ethnomedicinal, ethnopharmacological, phytoconstituents and phytoremediation of the plant Solanum viarum Dunal. Naunyn Schmiedebergs Arch Pharmacol 2024:10.1007/s00210-024-03034-6. [PMID: 38498057 DOI: 10.1007/s00210-024-03034-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/01/2024] [Indexed: 03/19/2024]
Abstract
Solanum viarum, a perennial shrub, belongs to the family Solanaceae known for its therapeutic value worldwide. As a beneficial remedial plant, it is used for treating several disorders like dysentery, diabetes, inflammation, and respiratory disorders. Phytochemistry studies of this plant have shown the presence of steroidal glycoside alkaloids, including solasonine, solasodine, and solamargine. It also has flavonoids, saponins, minerals, and other substances. S. viarum extracts and compounds possess a variety of pharmacological effects, including antipyretic, antioxidant, antibacterial, insecticidal, analgesic, and anticancer activity. Most of the heavy metals accumulate in the aerial sections of the plant which is considered a potential phytoremediation, a highly effective method for the treatment of metal-polluted soils. We emphasize the forgoing outline of S. viarum, as well as its ethnomedicinal and ethnopharmacological applications, the chemistry of its secondary metabolites, and heavy metal toxicity. In addition to describing the antitumor activity of compounds and their mechanisms of action isolated from S. viarum, liabilities are also explained and illustrated, including any significant chemical or metabolic stability and toxicity risks. A comprehensive list of information was compiled from Science Direct, PubMed, Google Scholar, and Web of Science using different key phrases (traditional use, ethnomedicinal plants, western Himalaya, Himachal Pradesh, S viarum, and biological activity). According to the findings of this study, we hope that this review will inspire further studies along the drug discovery pathway of the chemicals extracted from the plant of S. viarum. Further, this review shows that ethnopharmacological information from ethnomedicinal plants can be a promising approach to drug discovery for cancer and diabetes.
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Affiliation(s)
- Mehak Thakur
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, 173229, India
| | - Rachna Verma
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, 173229, India.
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003, Hradec Kralove, Czech Republic.
| | - Dinesh Kumar
- School of Bioengineering and Food Technology, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, 173229, India
| | - Priyanku Pradip Das
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Rajni Dhalaria
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, 173229, India
| | - Ajay Kumar
- ICFRE-Himalayan Forest Research Institute, Shimla, Himachal Pradesh, 171013, India
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, 50003, Hradec Kralove, Czech Republic
| | - Shavkatjon Azizov
- Faculty of Life Sciences, Pharmaceutical Technical University, 100084, Tashkent, Uzbekistan
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India.
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Morina F, Mijovilovich A, Mishra A, Brückner D, Vujić B, Bokhari SNH, Špak J, Falkenberg G, Küpper H. Cadmium and Zn hyperaccumulation provide efficient constitutive defense against Turnip yellow mosaic virus infection in Noccaea caerulescens. Plant Sci 2023; 336:111864. [PMID: 37689279 DOI: 10.1016/j.plantsci.2023.111864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/25/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
To understand the role of Zn and Cd in anti-viral defence, Zn/Cd hyperaccumulator Noccaea caerulescens plants grown with deficient (0.3 µM), replete (10 µM) and excess (100 µM) Zn2+ and Cd (10 µM Zn2+ + 1 µM Cd2+) were infected with Turnip yellow mosaic virus (TYMV). Gas exchange and chlorophyll fluorescence kinetics analyses demonstrated direct TYMV effects on photosynthetic light reactions but N. caerulescens was more resistant against TYMV than the previously studied non-hyperaccumulator N. ochroleucum. Virus abundance and photosynthesis inhibition were the lowest in the high Zn and Cd treatments. RNAseq analysis of 10 µM Zn2+ plants revealed TYMV-induced upregulation of Ca transporters, chloroplastic ZTP29 and defence genes, but none of those that are known to be strongly involved in hyperaccumulation. Synchrotron µ-XRF tomography, however, showed that Zn hyperaccumulation remained strongest in vacuoles of epidermal storage cells regardless of infection. This was in contrast to N. ochroleucum, where apoplastic Zn drastically increased in response to TYMV. These results suggest that the antiviral response of N. caerulescens is less induced by the onset of this biotic stress, but it is rather a permanent resistant state of the plant. Real-time qPCR revealed upregulation of ferritin in Zn10 infected plants, suggesting Fe deprivation as a virus defence strategy under suboptimal Zn supply.
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Affiliation(s)
- Filis Morina
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics & Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
| | - Ana Mijovilovich
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics & Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
| | - Archana Mishra
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics & Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
| | - Dennis Brückner
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany; University of Hamburg, Department of Physics, Jungiusstr. 9, 20355 Hamburg, Germany; Ruhr-Universität Bochum, Faculty of Chemistry and Biochemistry, Universitätsstr. 150, 44801 Bochum, Germany.
| | - Bojan Vujić
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics & Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
| | - Syed Nadeem Hussain Bokhari
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics & Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
| | - Josef Špak
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics & Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
| | - Gerald Falkenberg
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.
| | - Hendrik Küpper
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics & Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic; University of South Bohemia, Faculty of Science, Department of Experimental Plant Biology, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
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7
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Zhang LD, Song LY, Dai MJ, Liu JY, Li J, Xu CQ, Guo ZJ, Song SW, Liu JW, Zhu XY, Zheng HL. Inventory of cadmium-transporter genes in the root of mangrove plant Avicennia marina under cadmium stress. J Hazard Mater 2023; 459:132321. [PMID: 37597395 DOI: 10.1016/j.jhazmat.2023.132321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/07/2023] [Accepted: 08/15/2023] [Indexed: 08/21/2023]
Abstract
Mangrove Avicennia marina has the importantly potential for cadmium (Cd) pollution remediation in coastal wetlands. Unfortunately, the molecular mechanisms and transporter members for Cd uptake by the roots of A. marina are not well documented. In this study, photosynthetic and phenotypic analysis indicated that A. marina is particularly tolerant to Cd. The content and flux analysis indicated that Cd is mainly retained in the roots, with greater Cd influx in fine roots than that in coarse roots, and higher Cd influx in the root meristem zone as well. Using transcriptomic analysis, a total of 5238 differentially expressed genes were identified between the Cd treatment and control group. Moreover, we found that 54 genes were responsible for inorganic ion transport. Among these genes, AmHMA2, AmIRT1, and AmPCR2 were localized in the plasma membrane and AmZIP1 was localized in both plasma membrane and cytoplasm. All above gene encoding transporters showed significant Cd transport activities using function assay in yeast cells. In addition, the overexpression of AmZIP1 or AmPCR2 in Arabidopsis improved the Cd tolerance of transgenic plants. This is particularly significant as it provides insight into the molecular mechanism for Cd uptake by the roots of mangrove plants and a theoretical basis for coastal wetland phytoremediation.
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Affiliation(s)
- Lu-Dan Zhang
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Ling-Yu Song
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Ming-Jin Dai
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Jin-Yu Liu
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Jing Li
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Chao-Qun Xu
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Ze-Jun Guo
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Shi-Wei Song
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Jing-Wen Liu
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Xue-Yi Zhu
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China
| | - Hai-Lei Zheng
- Key Laboratory for Subtropical Wetland Ecosystem Research of MOE, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian 361005, PR China.
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8
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Sharma AK, Finney L, Vogt S, Vatamaniuk OK, Kim S. Cadmium alters whole animal ionome and promotes the re-distribution of iron in intestinal cells of Caenorhabditis elegans. Front Physiol 2023; 14:1258540. [PMID: 37822680 PMCID: PMC10562743 DOI: 10.3389/fphys.2023.1258540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/12/2023] [Indexed: 10/13/2023] Open
Abstract
The chronic exposure of humans to the toxic metal cadmium (Cd), either occupational or from food and air, causes various diseases, including neurodegenerative conditions, dysfunction of vital organs, and cancer. While the toxicology of Cd and its effect on the homeostasis of biologically relevant elements is increasingly recognized, the spatial distribution of Cd and other elements in Cd toxicity-caused diseases is still poorly understood. Here, we use Caenorhabditis elegans as a non-mammalian multicellular model system to determine the distribution of Cd at the tissue and cellular resolution and its effect on the internal levels and the distribution of biologically relevant elements. Using inductively coupled plasma-mass spectrophotometry (ICP-MS), we show that exposure of worms to Cd not only led to its internal accumulation but also significantly altered the C. elegans ionome. Specifically, Cd treatment was associated with increased levels of toxic elements such as arsenic (As) and rubidium (Rb) and a decreased accumulation of essential elements such as zinc (Zn), copper (Cu), manganese (Mn), calcium (Ca), cobalt (Co) and, depending on the Cd-concentration used in the assay, iron (Fe). We regarded these changes as an ionomic signature of Cd toxicity in C. elegans. We also show that supplementing nematode growth medium with Zn but not Cu, rescues Cd toxicity and that mutant worms lacking Zn transporters CDF-1 or SUR-7, or both are more sensitive to Cd toxicity. Finally, using synchrotron X-Ray fluorescence Microscopy (XRF), we showed that Cd significantly alters the spatial distribution of mineral elements. The effect of Cd on the distribution of Fe was particularly striking: while Fe was evenly distributed in intestinal cells of worms grown without Cd, in the presence of Cd, Fe, and Cd co-localized in punctum-like structures in the intestinal cells. Together, this study advances our understanding of the effect of Cd on the accumulation and distribution of biologically relevant elements. Considering that C. elegans possesses the principal tissues and cell types as humans, our data may have important implications for future therapeutic developments aiming to alleviate Cd-related pathologies in humans.
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Affiliation(s)
- Anuj Kumar Sharma
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Lydia Finney
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL, United States
| | - Stefan Vogt
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL, United States
| | - Olena K. Vatamaniuk
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
| | - Sungjin Kim
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, United States
- Department of Microbiology & Molecular Biology, Chungnam National University, Daejeon, Republic of Korea
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Niu L, Li C, Wang W, Zhang J, Scali M, Li W, Liu H, Tai F, Hu X, Wu X. Cadmium tolerance and hyperaccumulation in plants - A proteomic perspective of phytoremediation. Ecotoxicol Environ Saf 2023; 256:114882. [PMID: 37037105 DOI: 10.1016/j.ecoenv.2023.114882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/27/2023] [Accepted: 04/04/2023] [Indexed: 06/19/2023]
Abstract
Cadmium (Cd) is a major environmental pollutant and poses a risk of transfer into the food chain through contaminated plants. Mechanisms underlying Cd tolerance and hyperaccumulation in plants are not fully understood. Proteomics-based approaches facilitate an in-depth understanding of plant responses to Cd stress at the systemic level by identifying Cd-inducible differentially abundant proteins (DAPs). In this review, we summarize studies related to proteomic changes associated with Cd-tolerance mechanisms in Cd-tolerant crops and Cd-hyperaccumulating plants, especially the similarities and differences across plant species. The enhanced DAPs identified through proteomic studies can be potential targets for developing Cd-hyperaccumulators to remediate Cd-contaminated environments and Cd-tolerant crops with low Cd content in the edible organs. This is of great significance for ensuring the food security of an exponentially growing global population. Finally, we discuss the methodological drawbacks in current proteomic studies and propose that better protocols and advanced techniques should be utilized to further strengthen the reliability and applicability of future Cd-stress-related studies in plants. This review provides insights into the improvement of phytoremediation efficiency and an in-depth study of the molecular mechanisms of Cd enrichment in plants.
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Affiliation(s)
- Liangjie Niu
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China
| | - Chunyang Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China
| | - Wei Wang
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China.
| | - Jinghua Zhang
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China
| | - Monica Scali
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Weiqiang Li
- Jilin Da'an Agro-ecosystem National Observation Research Station, Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Hui Liu
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China
| | - Fuju Tai
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China
| | - Xiuli Hu
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China
| | - Xiaolin Wu
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou, China
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10
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Zhou J, Moore RET, Rehkämper M, Kreissig K, Coles B, Sun Y, Li Z, Luo Y, Christie P, Wu L. Zinc Supply Affects Cadmium Uptake and Translocation in the Hyperaccumulator Sedum Plumbizincicola as Evidenced by Isotope Fractionation. Environ Sci Technol 2023; 57:5891-5902. [PMID: 36988089 DOI: 10.1021/acs.est.2c08220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
This study employs stable isotope analysis to investigate the mechanisms of cadmium (Cd) and zinc (Zn) interaction in the metal hyperaccumulating plant species Sedum plumbizincicola. To this end, the Cd and Zn isotope compositions of root, stem, leaf, and xylem sap samples were determined during metal uptake and translocation at different Cd and Zn concentrations. The enrichment of light isotopes of both elements in plants during uptake was less pronounced at low metal supply levels, likely reflecting the switch from a low-affinity to a high-affinity transport system at lower levels of external metal supply. The lower δ114/110Cd values of xylem sap when treated with a metabolic inhibitor decreasing the active Cd uptake further supports the preference of heavier Cd isotopes during high-affinity transport. The Δ66Znplant-initial solution or Δ66Znplant-final solution values were similar at different Cd concentrations, indicating negligible interaction of Cd in the Zn uptake process. However, decreasing Zn supply levels significantly increased the enrichment of light Cd isotopes in plants (Δ114/110Cd = -0.08‰) in low-Cd treatments but reduced the enrichment of light Cd isotopes in plants (Δ114/110Cd = 0.08‰) under high Cd conditions. A systematic enrichment of heavy Cd and light Zn isotopes was found in root-to-shoot translocation of the metals. The Cd concentrations of the growth solutions thereby had no significant impact on Zn isotope fractionation during root-to-shoot translocation. However, the Δ114/110Cdtranslocation values hint at possible competition between Cd and Zn for transporters during root-to-shoot transfer and this may impact the transport pathway of Cd. The stable isotope data demonstrate that the interactions between the two metals influenced the uptake and transport mechanisms of Cd in S. plumbizincicola but had little effect on those of Zn.
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Affiliation(s)
- Jiawen Zhou
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Rebekah E T Moore
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Mark Rehkämper
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Katharina Kreissig
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Barry Coles
- Department of Earth Science & Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Yufang Sun
- Soil & Environment Analysis Center, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhu Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yongming Luo
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Peter Christie
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Longhua Wu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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11
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Rahman IMM, Khan BM. Physiological responses of wild grass Holcus lanatus L. to potentially toxic elements in soils: a review. Environ Sci Pollut Res Int 2023; 30:54470-54482. [PMID: 36995503 DOI: 10.1007/s11356-023-26472-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 03/11/2023] [Indexed: 06/19/2023]
Abstract
Potentially toxic elements (PTEs) in soils accumulate in plants, obstruct their growth, and pose hazards to the consumer via the food chain. Many kinds of grass, grass-like plants, and other higher plant species have evolved a tolerance to PTEs. Holcus lanatus L., a wild grass, is also tolerant (an excluder) of PTEs, such as arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn). However, the extent of tolerance varies among ecotypes and genotypes. The PTE tolerance mechanism of H. lanatus curtails the typical uptake process and causes a reduced translocation of PTEs from the roots to the shoots, while such a characteristic is useful for contaminated land management. The ecology and response patterns of Holcus lanatus L. to PTEs, along with the associated mechanisms, are reviewed in the current work.
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Affiliation(s)
- Ismail M M Rahman
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima City, Fukushima, 960-1296, Japan.
| | - Bayezid M Khan
- Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima City, Fukushima, 960-1296, Japan
- Institute of Forestry and Environmental Sciences, Faculty of Science, University of Chittagong, Chattogram, 4331, Bangladesh
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12
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Bai S, Han X, Feng D. Shoot-root signal circuit: Phytoremediation of heavy metal contaminated soil. Front Plant Sci 2023; 14:1139744. [PMID: 36890896 PMCID: PMC9987563 DOI: 10.3389/fpls.2023.1139744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
High concentrations of heavy metals in the environment will cause serious harm to ecosystems and human health. It is urgent to develop effective methods to control soil heavy metal pollution. Phytoremediation has advantages and potential for soil heavy metal pollution control. However, the current hyperaccumulators have the disadvantages of poor environmental adaptability, single enrichment species and small biomass. Based on the concept of modularity, synthetic biology makes it possible to design a wide range of organisms. In this paper, a comprehensive strategy of "microbial biosensor detection - phytoremediation - heavy metal recovery" for soil heavy metal pollution control was proposed, and the required steps were modified by using synthetic biology methods. This paper summarizes the new experimental methods that promote the discovery of synthetic biological elements and the construction of circuits, and combs the methods of producing transgenic plants to facilitate the transformation of constructed synthetic biological vectors. Finally, the problems that should be paid more attention to in the remediation of soil heavy metal pollution based on synthetic biology were discussed.
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Affiliation(s)
- Shiyan Bai
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
| | - Xiao Han
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
| | - Dan Feng
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
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13
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Gao PP, Liang H, Dong Y, Xue PY, Zhao QL, Yan JS, Ma W, Zhao JJ, Liu WJ. Transcriptomic mechanisms of reduced PM 2.5-Pb retention in the leaves of the low-Pb-accumulation genotype of Chinese cabbage. J Hazard Mater 2023; 444:130385. [PMID: 36403447 DOI: 10.1016/j.jhazmat.2022.130385] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/07/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Atmospheric fine particulate matter (PM2.5) mainly contributes to Pb accumulation in the edible leaves of Chinese cabbage in North China. It was found that a low-Pb-accumulation (LPA) genotype of Chinese cabbage contained less Pb in leaves than high-Pb-accumulation (HPA) genotype exposed to PM2.5-Pb. However, there are no data on the transcriptional regulatory mechanisms of foliar PM2.5-Pb uptake by Chinese cabbage. The present study investigated the retention of PM2.5-Pb in foliar apoplast and symplasm and the underlying molecular mechanisms of reduced Pb in LPA leaves. It appeared more Pb in apoplast and less Pb in symplasm of LPA leaves, whereas the pattern was opposite in HPA. There were 2646 and 3095 differentially expressed genes (DEGs) in LPA and HPA leaves under PM2.5-Pb stress with clearly genotype-specific function, respectively. Furthermore, mRNA levels of XTH16 regulating cell wall thickening, PME2 and PME6 involved in cell wall remodification were significantly expressed in LPA, but not in HPA. Meanwhile, foliar PM2.5-Pb stress downregulated expression of ZIP1, YSL1, and CNGC3 responsible for Pb influx to cell, and upregulated expression of ABCG36 regulated Pb efflux from symplasm in LPA leaves. These results improve our understanding to the mechanisms underlying foliar Pb uptake from PM2.5-Pb at transcriptomic level.
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Affiliation(s)
- Pei-Pei Gao
- State Key Laboratory of North China Crop Improvement and Regulation, College of Resources and Environmental Sciences, Hebei Agricultural University, Hebei, Baoding 071000, China; Key Laboratory for Farmland Eco-environment of Hebei Province, Hebei, Baoding 071000, China
| | - Hao Liang
- Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Hebei Collaborative Innovation Center for Green and Efficient Vegetable Industry, College of Horticulture, Hebei, Baoding 071000, China
| | - Yan Dong
- State Key Laboratory of North China Crop Improvement and Regulation, College of Resources and Environmental Sciences, Hebei Agricultural University, Hebei, Baoding 071000, China; Key Laboratory for Farmland Eco-environment of Hebei Province, Hebei, Baoding 071000, China
| | - Pei-Ying Xue
- State Key Laboratory of North China Crop Improvement and Regulation, College of Resources and Environmental Sciences, Hebei Agricultural University, Hebei, Baoding 071000, China; Key Laboratory for Farmland Eco-environment of Hebei Province, Hebei, Baoding 071000, China
| | - Quan-Li Zhao
- The Teaching and Experimental Station, Hebei Agricultural University, Hebei, Baoding 071000, China
| | - Jing-Sen Yan
- Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Hebei Collaborative Innovation Center for Green and Efficient Vegetable Industry, College of Horticulture, Hebei, Baoding 071000, China
| | - Wei Ma
- Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Hebei Collaborative Innovation Center for Green and Efficient Vegetable Industry, College of Horticulture, Hebei, Baoding 071000, China
| | - Jian-Jun Zhao
- Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei, Hebei Collaborative Innovation Center for Green and Efficient Vegetable Industry, College of Horticulture, Hebei, Baoding 071000, China
| | - Wen-Ju Liu
- State Key Laboratory of North China Crop Improvement and Regulation, College of Resources and Environmental Sciences, Hebei Agricultural University, Hebei, Baoding 071000, China; Key Laboratory for Farmland Eco-environment of Hebei Province, Hebei, Baoding 071000, China.
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14
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Kitamura RSA, Brito JCM, Silva de Assis HC, Gomes MP. Physiological responses and phytoremediation capacity of floating and submerged aquatic macrophytes exposed to ciprofloxacin. Environ Sci Pollut Res Int 2023; 30:622-639. [PMID: 35904744 DOI: 10.1007/s11356-022-22253-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Ciprofloxacin (Cipro) water contamination is a global concern, having reached disturbing concentrations and threatening the aquatic ecosystems. We investigated the physiological responses and Cipro-phytoremediation capacity of one floating (Salvinia molesta D.S. Mitchell) and one submerged (Egeria densa Planch.) species of aquatic macrophytes. The plants were exposed to increased concentrations of Cipro (0, 1, 10, and 100 µg.Cipro.L-1) in artificially contaminated water for 96 and 168 h. Although the antibiotic affected the activities of mitochondrial electron transport chain enzymes, the resulting increases in H2O2 concentrations were not associated with oxidative damage or growth reductions, mainly due to the activation of antioxidant systems for both species. In addition to being tolerant to Cipro, after only 96 h, plants were able to reclaim more than 58% of that from the media. The phytoremediation capacity did not differ between the species, however, while S. molesta bioaccumulate, E. densa appears to metabolize Cipro in their tissues. Both macrophytes are indicated for Cipro-phytoremediation projects.
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Affiliation(s)
- Rafael Shinji Akiyama Kitamura
- Laboratório de Fisiologia de Plantas Sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal Do Paraná, Avenida Coronel Francisco H. Dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, Curitiba , Paraná, 81531-980, Brazil
- Laboratório de Toxicologia Ambiental, Departamento de Farmacologia, Setor de Ciências Biológicas, Universidade Federal Do Paraná, Avenida Coronel Francisco H. Dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, Curitiba , Paraná, 81531-980, Brazil
- Ecology and Conservation Program Post-Graduation, Federal University of Paraná, Avenue Coronel Francisco Heráclito dos Santos, 100, Jardim das Américas, Curitiba , Paraná, 81531-980, Brazil
| | - Júlio César Moreira Brito
- Fundação Ezequiel Dias, Rua Conde Pereira Carneiro, 80, Belo Horizonte, Minas Gerais, 30510-010, Brazil
| | - Helena Cristina Silva de Assis
- Laboratório de Toxicologia Ambiental, Departamento de Farmacologia, Setor de Ciências Biológicas, Universidade Federal Do Paraná, Avenida Coronel Francisco H. Dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, Curitiba , Paraná, 81531-980, Brazil
| | - Marcelo Pedrosa Gomes
- Laboratório de Fisiologia de Plantas Sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal Do Paraná, Avenida Coronel Francisco H. Dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, Curitiba , Paraná, 81531-980, Brazil.
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15
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Sun A, Wang WX. Insights into the kinetic regulation of Zn bioaccumulation at trace levels: Lighting up Saccharomycescerevisiae. Chemosphere 2022; 308:136318. [PMID: 36075365 DOI: 10.1016/j.chemosphere.2022.136318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/24/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
Zn displays a double-edged effect by acting both as a micronutrient and a toxic metal, and quantitative analysis of its kinetic flux under low environmental concentrations is critical to understand its intracellular regulation. In the present study, we employed a Zn sensitive model eukaryote, the yeast Saccharomyces cerevisiae, which responded to intracellular Zn levels by increasing its autofluorescence, to quantify Zn influx, transportation between labile and storage pools, and efflux under different Zn exposure levels (<1 μM). We demonstrated that the yeast regulated Zn uptake from the extracellular source by a gradually decreased accumulation following an initial high accumulation rate. The subsequent reduced accumulation rate resulted in a steady-state Zn accumulation at 0.061 and 0.073 μg Zn/μg P as the threshold values for the control yeast and Zn-depleted yeast, respectively, independently of the extracellular Zn concentration. Compared with the control yeast, the Zn-depleted yeast possessed a higher accumulation rate, but the difference of bioaccumulation was maintained at approximately 0.01 μg Zn/μg P under different concentrations of extracellular Zn. In contrast, transportation between labile Zn and storage Zn pools or Zn efflux to the extracellular environment was not obvious after Zn exposure, indicating that the Zn dose was below a basal requirement. Such stabilized Zn accumulation was only induced by controlling the Zn influx at the bio-interface. With the novel monitoring of the kinetic changes of autofluorescence, our study demonstrated a remarkably tight Zn regulation system in yeast, providing enlightenment for Zn homeostasis in eukaryotes under low Zn exposure in aqueous environments.
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Affiliation(s)
- Anqi Sun
- Division of Life Science, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China; School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China.
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16
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Yang Q, Xie J, Liu H, Fang Z. The addition of exogenous low-molecular-weight organic acids improved phytoremediation by Bidens pilosa L. in Cd-contaminated soil. Environ Sci Pollut Res Int 2022; 29:76766-76781. [PMID: 35670943 DOI: 10.1007/s11356-022-20686-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Enhancing the uptake and enrichment of heavy metals in plants is one of the important means to strengthen phytoremediation. In the present study, citric acid (CA), tartaric acid (TA), and malic acid (MA) were applied to enhance phytoremediation by Bidens pilosa L. in Cd-contaminated soil. The results showed that by the addition of appropriate concentrations of CA, TA, and MA, the values of the bioconcentration factor increased by 77.98%, 78.33%, and 64.49%, respectively, the translocation factor values increased by 16.45%, 12.61%, and 5.73%, respectively, and the values of the phytoextraction rates increased by 169.21%, 71.28%, and 63.11%, respectively. The minimum fluorescence values of leaves decreased by 31.62%, 0.28%, and 17.95%, while the potential efficiency of the PSII values of leaves increased 117.87%, 2.25%, and 13.18%, respectively, when CA, TA, and MA with suitable concentration were added. Redundancy analysis showed that CA and MA in plants were significantly positively correlated with plant growth, photosynthesis, and other indicators, whereas TA showed a negative correlation with most indicators. Moreover, CA addition could significantly increase the abundances of Azotobacter, Pseudomonas, and other growth-promoting bacteria, and the abundance values of Actinophytocola and Ensifer were improved in TA treatments. Therefore, our results demonstrated that low-molecular-weight organic acids could enhance phytoremediation, and exogenous CA could significantly improve the phytoremediation of Cd-contaminated soil by Bidens pilosa L.
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Affiliation(s)
- Qing Yang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Junting Xie
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Huijun Liu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Zhiguo Fang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.
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17
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Liu L, Zhang L, Zhao L, Chen Q, Zhang Q, Cao D, Liu Z. Differential Gene Expression and Metabolic Pathway Analysis of Cladophora rupestris under Pb Stress Conditions. Int J Environ Res Public Health 2022; 19:13910. [PMID: 36360789 PMCID: PMC9656615 DOI: 10.3390/ijerph192113910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to analyze the transcriptome of C. rupestris under Pb2+ stress by using high-throughput sequencing technology, observe the changes of gene expression and metabolic pathway after three and five days under 1.0 and 5.0 mg/L of Pb2+ treatment, and analyze the differentially expressed genes (DEGs) and related functional genes after Pb2+ treatment. Metabolic pathways were revealed through Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Results show that DEGs increased significantly with the increase of Pb2+ concentration and stress time. A total of 32 genes were closely related to Pb2+ stress response. GO analysis identified two major transporter proteins, namely, ATP-binding transport protein-related (ABC transporters) and zinc finger CCHC domain containing protein (Zfp) in C. rupestris. Pthr19248, pthr19211, Zfp pthr23002, Zfp p48znf pthr12681, Zfp 294 pthr12389, and Zfp pthr23067 played important roles against Pb2+ toxicity and its absorption in C. rupestris. KEGG pathway analysis suggested that ABCA1, ATM, and ABCD3 were closely related to Pb2+ absorption. Pb2+ stress was mainly involved in metallothionein (MT), plant hormone signal transduction, ABC transporters, and glutathione (GSH) metabolism.
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Affiliation(s)
- Lei Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Lusheng Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Lingyun Zhao
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Qiuyu Chen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Qian Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Deju Cao
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Zhaowen Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
- School of Materials and Environmental Engineering, Chizhou University, Chizhou 247000, China
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18
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Zhang R, Liu Q, Xu X, Liao M, Lin L, Hu R, Luo X, Wang Z, Wang J, Deng Q, Liang D, Xia H, Lv X, Tang Y, Wang X. An amino acid fertilizer improves the emergent accumulator plant Nasturtium officinale R. Br. phytoremediation capability for cadmium-contaminated paddy soils. Front Plant Sci 2022; 13:1003743. [PMID: 36299780 PMCID: PMC9592069 DOI: 10.3389/fpls.2022.1003743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Cadmium (Cd) contamination of paddy soil affects safe crop production. This study aimed to evaluate the effects of plant biostimulant amino acid fertilizer on the phytoremediation capability of an emergent accumulator plant Nasturtium officinale R. Br. for Cd-contaminated paddy soils. A pot study was carried out to study the effects of different concentrations of amino acid fertilizer on the Cd accumulation of N. officinale grown in Cd-contaminated paddy soil. The amino acid fertilizer increased the biomass of N. officinale. The amino acid fertilizer concentration exhibited a quadratic polynomial regression relationship with the root and shoot biomass. The fertilizer also increased the photosynthetic pigment (chlorophyll and carotenoid) contents, peroxidase (POD; EC 1.11.1.7) activity, and catalase (CAT; EC 1.11.1.6) activity of N. officinale, but decreased the soluble protein content and had no significant effect on the superoxide dismutase (SOD; EC 1.15.1.1) activity. Furthermore, the amino acid fertilizer increased the Cd content and Cd extraction of N. officinale. The shoot Cd extraction increased by 29.06%, 63.05%, 77.22%, and 17.40% at 1500-, 1200-, 900-, and 600-fold dilutions of the amino acid fertilizer, respectively, compared with the control. Moreover, the amino acid fertilizer promoted the Cd transport from the roots to shoots of N. officinale. The amino acid fertilizer concentration also exhibited a quadratic polynomial regression relationship with the root Cd content, shoot Cd content, root Cd extraction, and shoot Cd extraction, respectively. The correlation, grey relational, and path analyses revealed that the root biomass, shoot biomass, chlorophyll content, catalase activity, shoot Cd content, and root Cd extraction were closely associated with the shoot Cd extraction. Therefore, the amino acid fertilizer can promote Cd uptake and improve the phytoremediation capability of N. officinale to remediate Cd-contaminated paddy soils, and 900-fold dilution is the most suitable concentration.
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Affiliation(s)
- Ran Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Qin Liu
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Xiangting Xu
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Ming’an Liao
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Lijin Lin
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Rongping Hu
- Institute of Sichuan Edible Fungi, Chengdu, China
| | - Xian Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Zhihui Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Jin Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Qunxian Deng
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Dong Liang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Hui Xia
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Xiulan Lv
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Yi Tang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
| | - Xun Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, China
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19
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Chen X, Zhang X, Chen H, Xu X. Physiology and proteomics reveal Fulvic acid mitigates Cadmium adverse effects on growth and photosynthetic properties of lettuce. Plant Sci 2022; 323:111418. [PMID: 35985414 DOI: 10.1016/j.plantsci.2022.111418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/27/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Understanding the molecular mechanisms of plants in response to Cd stress is crucial for improving plants adaptation to Cd stress. Fulvic acid (FA) is an active humic substance that is often used as a soil conditioner. However, there are few reports on the role of FA against Cd stress. The aim of this study was to determine the effects of Fulvic acid on alleviation of Cd toxicity in lettuce (Lactuca sativa L) under hydroponic conditions. Our results showed that 20 μmol/L Cd stress significantly reduced photosynthetic pigment metabolism and the expression of photosynthetic apparatus-related proteins, thereby inhibiting photosynthetic electron transport, net photosynthetic rate and negatively affecting photosynthetic carbon assimilation and growth of lettuce. However, proteomic findings suggest that the application of FA can reduce the adverse effects of Cd contamination. Compared to Cd stress alone, FA significantly increased the expression of Light-harvesting proteins, reaction center and electron transport-related proteins. Further results showed that FA at 0.5 g/L reduced the uptake of Cd by the roots, resulting in a 23.5% reduction in total Cd content in lettuce. Moreover, FA enhanced S metabolism and rebuilt redox homeostasis in cells. Overall, these findings provide new insights into the mechanism of cadmium toxicity mitigation in lettuce by FA. Which is recommended as an eco-friendly tool for improving the photosynthesis performance and biomass of lettuce under Cd stress.
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Affiliation(s)
- Xiaojing Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xin Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Hao Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoming Xu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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20
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Dang F, Li Y, Wang Y, Lin J, Du S, Liao X. ZAT10 plays dual roles in cadmium uptake and detoxification in Arabidopsis. Front Plant Sci 2022; 13:994100. [PMID: 36110357 PMCID: PMC9468636 DOI: 10.3389/fpls.2022.994100] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 08/11/2022] [Indexed: 05/30/2023]
Abstract
Cadmium (Cd) is a harmful heavy metal that is risky for plant growth and human health. The zinc-finger transcription factor ZAT10 is highly conserved with ZAT6 and ZAT12, which are involved in Cd tolerance in plants. However, the definite function of ZAT10 in Cd tolerance remains uncertain. Here, we demonstrated that ZAT10 negatively regulated Cd uptake and enhanced Cd detoxification in Arabidopsis. The expression of ZAT10 in plants is induced by Cd treatment. The zat10 mutant plants exhibited a greater sensitivity to Cd stress and accumulated more Cd in both shoot and root. Further investigations revealed that ZAT10 repressed the transcriptional activity of IRT1, which encodes a key metal transporter involved in Cd uptake. Meanwhile, ZAT10 positively regulated four heavy metal detoxification-related genes: NAS1, NAS2, IRT2, and MTP3. We further found that ZAT10 interacts with FIT, but their regulatory relationship is still unclear. In addition, ZAT10 directly bound to its own promoter and repressed its transcription as a negative feedback regulation. Collectively, our findings provided new insights into the dual functions of ZAT10 on Cd uptake and detoxification in plants and pointed to ZAT10 as a potential gene resource for Cd tolerance improvement in plants.
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Affiliation(s)
- Fengfeng Dang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Yajing Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Yanfeng Wang
- Shaanxi Key Laboratory of Chinese Jujube, Yan’an University, Yan’an, China
| | - Jinhui Lin
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shenxiu Du
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Xinyang Liao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
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21
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Skuza L, Szućko-Kociuba I, Filip E, Bożek I. Natural Molecular Mechanisms of Plant Hyperaccumulation and Hypertolerance towards Heavy Metals. Int J Mol Sci 2022; 23:9335. [PMID: 36012598 DOI: 10.3390/ijms23169335] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/11/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022] Open
Abstract
The main mechanism of plant tolerance is the avoidance of metal uptake, whereas the main mechanism of hyperaccumulation is the uptake and neutralization of metals through specific plant processes. These include the formation of symbioses with rhizosphere microorganisms, the secretion of substances into the soil and metal immobilization, cell wall modification, changes in the expression of genes encoding heavy metal transporters, heavy metal ion chelation, and sequestration, and regenerative heat-shock protein production. The aim of this work was to review the natural plant mechanisms that contribute towards increased heavy metal accumulation and tolerance, as well as a review of the hyperaccumulator phytoremediation capacity. Phytoremediation is a strategy for purifying heavy-metal-contaminated soils using higher plants species as hyperaccumulators.
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22
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Jiang J, Wang Z, Kong X, Chen Y, Li J. Exogenous tryptophan application improves cadmium tolerance and inhibits cadmium upward transport in broccoli ( Brassica oleracea var. italica). Front Plant Sci 2022; 13:969675. [PMID: 36035682 PMCID: PMC9403758 DOI: 10.3389/fpls.2022.969675] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) pollution not only reduces crop yields, but also threatens human health and food safety. It is of great significance for agricultural production to improve plant Cd resistance and reduce Cd accumulation. In Arabidopsis, tryptophan (Trp) has been found to play a role in Cd resistance. However, studies on the role of exogenous Trp on Cd tolerance in crops are limited. Here, we report that exogenous Trp application can effectively alleviate biomass decline induced by Cd stress and inhibit Cd transport from roots to shoots in Brassica oleracea var. italica (broccoli). Compared to Cd stress alone, the fresh weight of shoots and roots of B. oleracea seedlings treated with Cd and Trp increased by 25 and 120%, respectively, and the Cd content in shoots decreased by 51.6%. In combination with physiological indices and transcriptome analysis, we preliminarily explored the mechanism of Trp alleviating Cd stress and affecting Cd transport. Trp inhibited Cd-induced indole-3-acetic acid (IAA) conjugation, thereby providing enough free IAA to sustain growth under Cd stress; Trp inhibited the indolic glucosinolate (IGS) biosynthesis induced by Cd. Considering that the synthesis of IGS consumes glutathione (GSH) as a sulfur donor, the inhibition of Trp in IGS synthesis may be conducive to maintaining a high GSH content to be against Cd stress. Consistent with this, we found that GSH content under Cd stress with Trp application was higher than that of Cd alone. In addition to alleviating the damage caused by Cd, Trp can also inhibit the upward transport of Cd from roots to shoots, possibly by repressing the expression of HMA4, which encodes a transporter responsible for the xylem loading and Cd upward transport.
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Affiliation(s)
- Jia Jiang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Ze Wang
- College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Xiangzhou Kong
- College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Yajun Chen
- College of Horticulture, Northeast Agricultural University, Harbin, China
| | - Jing Li
- College of Life Sciences, Northeast Agricultural University, Harbin, China
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23
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Tao J, Lu L. Advances in Genes-Encoding Transporters for Cadmium Uptake, Translocation, and Accumulation in Plants. Toxics 2022; 10:411. [PMID: 35893843 DOI: 10.3390/toxics10080411] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/15/2022] [Accepted: 07/20/2022] [Indexed: 12/12/2022]
Abstract
Cadmium (Cd) is a heavy metal that is highly toxic for plants, animals, and human beings. A better understanding of the mechanisms involved in Cd accumulation in plants is beneficial for developing strategies for either the remediation of Cd-polluted soils using hyperaccumulator plants or preventing excess Cd accumulation in the edible parts of crops and vegetables. As a ubiquitous heavy metal, the transport of Cd in plant cells is suggested to be mediated by transporters for essential elements such as Ca, Zn, K, and Mn. Identification of the genes encoding Cd transporters is important for understanding the mechanisms underlying Cd uptake, translocation, and accumulation in either crop or hyperaccumulator plants. Recent studies have shown that the transporters that mediate the uptake, transport, and accumulation of Cd in plants mainly include members of the natural resistance-associated macrophage protein (Nramp), heavy metal-transporting ATPase (HMA), zinc and iron regulated transporter protein (ZIP), ATP-binding cassette (ABC), and yellow stripe-like (YSL) families. Here, we review the latest advances in the research of these Cd transporters and lay the foundation for a systematic understanding underlying the molecular mechanisms of Cd uptake, transport, and accumulation in plants.
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24
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Zhao X, Lei M, Gu R. Knowledge Mapping of the Phytoremediation of Cadmium-Contaminated Soil: A Bibliometric Analysis from 1994 to 2021. Int J Environ Res Public Health 2022; 19:ijerph19126987. [PMID: 35742236 PMCID: PMC9222242 DOI: 10.3390/ijerph19126987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 11/16/2022]
Abstract
Cadmium pollution of soil threatens the environmental quality and human health. Phytoremediation of cadmium-contaminated soil has attracted global attention in recent decades. This study aimed to conduct a comprehensive and systematic review of the literature on phytoremediation of cadmium-contaminated soil based on bibliometric analysis. A total of 5494 articles published between 1994 and 2021 were retrieved from the Web of Science Core Collection. Our knowledge mapping presented the authors, journals, countries, institutions, and other basic information to understand the development status of phytoremediation of cadmium-contaminated soil. Based on a keyword cluster analysis, the identified major research domains were "biochar", "Thlaspi caerulescens", "endophytic bacteria", "oxidative stress", "EDTA", and "bioconcentration factor". Overall, this study provided a detailed summary of research trends and hotspots. Based on the keyword co-occurrence and burst analysis, the core concepts and basic theories of this field were completed in 2011. However, the pace of theoretical development has been relatively slow. Finally, future research trends/frontiers were proposed, such as biochar addition, rhizosphere bacterial community manipulation, cadmium subcellular distribution, and health risk assessment.
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Affiliation(s)
- Xiaofeng Zhao
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mei Lei
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-010-64889115
| | - Runyao Gu
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China;
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25
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Ge J, Lin J, Wu Z, Xu K, Tao J, Lin H, Tian S, Lu L. Role of SaPCR2 in Zn Uptake in the Root Elongation Zone of the Zn/Cd Hyperaccumulator Sedum alfredii. Life (Basel) 2022; 12:768. [PMID: 35629434 DOI: 10.3390/life12050768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/12/2022] [Accepted: 05/18/2022] [Indexed: 11/17/2022] Open
Abstract
Zn pollution is a potential toxicant for agriculture and the environment. Sedum alfredii is a Zn/Cd hyperaccumulator found in China and has been proven as a useful resource for the phytoremediation of Zn-contaminated sites. However, the molecular mechanism of Zn uptake in S. alfredii is limited. In this study, the function of SaPCR2 on Zn uptake in S. alfredii was identified by gene expression analysis, yeast function assays, Zn accumulation and root morphology analysis in transgenic lines to further elucidate the mechanisms of uptake and translocation of Zn in S. alfredii. The results showed that SaPCR2 was highly expressed in the root elongation zone of the hyperaccumulating ecotype (HE) S. alfredii, and high Zn exposure downregulated the expression of SaPCR2 in the HE S. alfredii root. The heterologous expression of SaPCR2 in yeast suggested that SaPCR2 was responsible for Zn influx. The overexpression of SaPCR2 in the non-hyperaccumulating ecotype (NHE) S. alfredii significantly increased the root uptake of Zn, but did not influence Mn, Cu or Fe. SR-μ-XRF technology showed that more Zn was distributed in the vascular buddle tissues, as well as in the cortex and epidermis in the transgenic lines. Root morphology was also altered after SaPCR2 overexpression, and a severe inhibition was observed. In the transgenic lines, the meristematic and elongation zones of the root were lower compared to the WT, and Zn accumulation in meristem cells was also reduced. These results indicate that SaPCR2 is responsible for Zn uptake, and mainly functions in the root elongation zone. This research on SaPCR2 could provide a theoretical basis for the use of genetic engineering technology in the modification of crops for their safe production and biological enhancement.
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26
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Ereful NC, Jones H, Fradgley N, Boyd L, Cherie HA, Milner MJ. Nutritional and genetic variation in a core set of Ethiopian Tef (Eragrostis tef) varieties. BMC Plant Biol 2022; 22:220. [PMID: 35484480 PMCID: PMC9047342 DOI: 10.1186/s12870-022-03595-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Tef (Eragrostis tef) is a tropical cereal domesticated and grown in the Ethiopian highlands, where it has been a staple food of Ethiopians for many centuries. Food insecurity and nutrient deficiencies are major problems in the country, so breeding for enhanced nutritional traits, such as Zn content, could help to alleviate problems with malnutrition. RESULTS To understand the breeding potential of nutritional traits in tef a core set of 24 varieties were sequenced and their mineral content, levels of phytate and protein, as well as a number of nutritionally valuable phenolic compounds measured in grain. Significant variation in all these traits was found between varieties. Genome wide sequencing of the 24 tef varieties revealed 3,193,582 unique SNPs and 897,272 unique INDELs relative to the tef reference var. Dabbi. Sequence analysis of two key transporter families involved in the uptake and transport of Zn by the plant led to the identification of 32 Zinc Iron Permease (ZIP) transporters and 14 Heavy Metal Associated (HMA) transporters in tef. Further analysis identified numerous variants, of which 14.6% of EtZIP and 12.4% of EtHMA variants were non-synonymous changes. Analysis of a key enzyme in flavanol synthesis, flavonoid 3'-hydroxylase (F3'H), identified a T-G variant in the tef homologue Et_s3159-0.29-1.mrna1 that was associated with the differences observed in kaempferol glycoside and quercetin glycoside levels. CONCLUSION Wide genetic and phenotypic variation was found in 24 Ethiopian tef varieties which would allow for breeding gains in many nutritional traits of importance to human health.
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Affiliation(s)
- Nelzo C Ereful
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Philippine Genome Centre, University of the Philippines Los Baňos, Laguna, Philippines
| | - Huw Jones
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
| | - Nick Fradgley
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Lesley Boyd
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
| | - Hirut Assaye Cherie
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, P.O.Box 26, Bahir Dar, Ethiopia
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27
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Imperiale D, Lencioni G, Marmiroli M, Zappettini A, White JC, Marmiroli N. Interaction of hyperaccumulating plants with Zn and Cd nanoparticles. Sci Total Environ 2022; 817:152741. [PMID: 34990684 DOI: 10.1016/j.scitotenv.2021.152741] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 12/23/2021] [Accepted: 12/24/2021] [Indexed: 05/27/2023]
Abstract
Metal hyperaccumulating plant species are an interesting example of natural selection and environmental adaptation but they may also be useful to developing new technologies of environmental monitoring and remediation. Noccaea caerulescens and Arabidopsis halleri are both Brassicaceae and are known metal hyperaccumulators. This study evaluated tolerance, uptake and translocation of zinc sulfide quantum dots by N. cearulescens and cadmium sulfide quantum dots by A. halleri in direct comparison with the non-hyperaccumulator, genetically similar T. perfoliatum and A. thaliana. Growth media were supplied with two different concentrations of metal in either salt (ZnSO4 and CdSO4) or nanoscale form (ZnS QDs and CdS QDs). After 30 days of exposure, the concentration of metals in the soil, roots and leaves was determined. Uptake and localization of the metal in both nanoscale and non-nanoscale form inside plant tissues was investigated by Environmental Scanning Electron Microscopy (ESEM) equipped with an X-ray probe. Specifically, the hyperaccumulators in comparison with the non-hyperaccumulators accumulate ionic and nanoscale Zn and Cd in the aerial parts with a BCF ratio of 45.9 for Zn ion, 49.6 for nanoscale Zn, 2.64 for Cd ion and 2.54 for nanoscale Cd. Results obtained with a differential extraction analytical procedure also showed that a significant fraction of nanoscale metals remained inside the plants in a form compatible with the retention of at least a partial initial structure. The molecular consequences of the hyperaccumulation of nanoscale materials are discussed considering data obtained with hyperaccumulation of ionic metal. This is the first report of conventional hyperaccumulating plants demonstrating an ability to hyperaccumulate also engineered nanomaterials (ENMs) and suggests a potential novel strategy for not only understanding plant-nanomaterial interactions but also for potential biomonitoring in the environment to avoid their entering into the food chains.
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Affiliation(s)
- Davide Imperiale
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy; National Interuniversity Consortium for Environmental Sciences (CINSA), Parma, Italy; Interdepartmental Center Siteia Parma, University of Parma, Parma, Italy
| | - Giacomo Lencioni
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Marta Marmiroli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Andrea Zappettini
- IMEM-CNR Istituto dei Materiali per l'Elettronica ed il Magnetismo, Parma, Italy
| | - Jason C White
- The Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Nelson Marmiroli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy; National Interuniversity Consortium for Environmental Sciences (CINSA), Parma, Italy.
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28
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Gong F, Qi T, Hu Y, Jin Y, Liu J, Wang W, He J, Tu B, Zhang T, Jiang B, Wang Y, Zhang L, Zheng Y, Liu D, Huang L, Wu B. Genome-Wide Investigation and Functional Verification of the ZIP Family Transporters in Wild Emmer Wheat. Int J Mol Sci 2022; 23:2866. [PMID: 35270007 PMCID: PMC8911026 DOI: 10.3390/ijms23052866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/18/2022] [Accepted: 02/19/2022] [Indexed: 12/02/2022] Open
Abstract
The zinc/iron-regulated transporter-like protein (ZIP) family has a crucial role in Zn homeostasis of plants. Although the ZIP genes have been systematically studied in many plant species, the significance of this family in wild emmer wheat (Triticum turgidum ssp. dicoccoides) is not yet well understood. In this study, a genome-wide investigation of ZIPs genes based on the wild emmer reference genome was conducted, and 33 TdZIP genes were identified. Protein structure analysis revealed that TdZIP proteins had 1 to 13 transmembrane (TM) domains and most of them were predicted to be located on the plasma membrane. These TdZIPs can be classified into three clades in a phylogenetic tree. They were annotated as being involved in inorganic ion transport and metabolism. Cis-acting analysis showed that several elements were involved in hormone, stresses, grain-filling, and plant development. Expression pattern analysis indicated that TdZIP genes were highly expressed in different tissues. TdZIP genes showed different expression patterns in response to Zn deficiency and that 11 genes were significantly induced in either roots or both roots and shoots of Zn-deficient plants. Yeast complementation analysis showed that TdZIP1A-3, TdZIP6B-1, TdZIP6B-2, TdZIP7A-3, and TdZIP7B-2 have the capacity to transport Zn. Overexpression of TdZIP6B-1 in rice showed increased Zn concentration in roots compared with wild-type plants. The expression levels of TdZIP6B-1 in transgenic rice were upregulated in normal Zn concentration compared to that of no Zn. This work provides a comprehensive understanding of the ZIP gene family in wild emmer wheat and paves the way for future functional analysis and genetic improvement of Zn deficiency tolerance in wheat.
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29
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Husaini AM. High-value pleiotropic genes for developing multiple stress-tolerant biofortified crops for 21st-century challenges. Heredity (Edinb) 2022. [PMID: 35173311 DOI: 10.1038/s41437-022-00500-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 11/08/2022] Open
Abstract
The agriculture-based livelihood systems that are already vulnerable due to multiple challenges face immediate risk of increased crop failures due to weather vagaries. As breeders and biotechnologists, our strategy is to advance and innovate breeding for weather-proofing crops. Plant stress tolerance is a genetically complex trait. Additionally, crops rarely face a single type of stress in isolation, and it is difficult for plants to deal with multiple stresses simultaneously. One of the most helpful approaches to creating stress-resilient crops is genome editing and trans- or cis-genesis. Out of hundreds of stress-responsive genes, many have been used to impart tolerance against a particular stress factor, while a few used in combination for gene pyramiding against multiple stresses. However, a better approach would be to use multi-role pleiotropic genes that enable plants to adapt to numerous environmental stresses simultaneously. Herein we attempt to integrate and present the scattered information published in the past three decades about these pleiotropic genes for crop improvement and remodeling future cropping systems. Research articles validating functional roles of genes in transgenic plants were used to create groups of multi-role pleiotropic genes that could be candidate genes for developing weather-proof crop varieties. These biotech crop varieties will help create 'high-value farms' to meet the goal of a sustainable increase in global food productivity and stabilize food prices by ensuring a fluctuation-free assured food supply. It could also help create a gene repository through artificial gene synthesis for 'resilient high-value food production' for the 21st century.
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30
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Alam MR, Rahman MM, Tam NFY, Yu RMK, MacFarlane GR. The accumulation and distribution of arsenic species and selected metals in the saltmarsh halophyte, spiny rush (Juncus acutus). Mar Pollut Bull 2022; 175:113373. [PMID: 35093784 DOI: 10.1016/j.marpolbul.2022.113373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
This study examined the accumulation of As species, Se, Cu, Zn, Cd and Pb in the halophyte Juncus acutus, collected from three anthropogenically impacted estuaries in NSW, Australia. As concentration ranged from 4 to 22 μg/g at Georges River, 2-16 μg/g at Lake Macquarie and 6 μg/g at Hunter Estuary. Inorganic As was accumulated mainly in roots with low translocation to culm with a greater abundance of AsV. However, AsIII (TF = 0.32) showed greater mobility from the roots to shoots than AsV (TF = 0.04), indicating a higher quantity of AsIII specific transporter assemblages in the plasmalemma of the endodermis or cytoplasmic reduction of AsV to AsIII in culms. Metal(loid)s, including As (90%), were predominantly in root tissues and very limited translocation to culm, indicating the species is a useful phytostabiliser. As and all other metal(loid)s in roots were correlated with sediment loads (p < 0.05, R2 = 0.10-0.52), indicating the species would be an accumulative bioindicator.
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Affiliation(s)
- Md Rushna Alam
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; Department of Aquaculture, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Nora Fung-Yee Tam
- Department of Science, School of Science and Technology, The Open University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Richard Man Kit Yu
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Geoff R MacFarlane
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia.
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31
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Zhou J, Li Z, Zhang X, Yu H, Wu L, Huang F, Luo Y, Christie P. Zinc uptake and replenishment mechanisms during repeated phytoextraction using Sedum plumbizincicola revealed by stable isotope fractionation. Sci Total Environ 2022; 806:151306. [PMID: 34743872 DOI: 10.1016/j.scitotenv.2021.151306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 10/18/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
Improving phytoremediation techniques requires a thorough understanding of the mechanisms of plant uptake and the replenishment of the bioavailable pool of the target element, and this may be effectively explored using stable isotope methods. A repeated phytoextraction experiment over five successive crops of cadmium (Cd) and zinc (Zn) hyperaccumulator Sedum plumbizincicola X.H. Guo et S.B. Zhou ex L.H. Wu (Crassulaceae) was conducted using four agricultural soils differing in soil pH and clay content. The isotopic composition of total Zn and NH4OAc-extractable Zn in soils before phytoextraction and after the fifth crop were determined, together with Zn in shoot samples in the first crop. S. plumbizincicola preferentially took up light Zn isotopes from the NH4OAc-extractable pool (Δ66Znshoot-extract = -0.42 to -0.16‰), indicating the predominance of Zn low-affinity transport. However, after long-term phytoextraction NH4OAc-extractable Zn became isotopically lighter than prior to phytoextraction in three of the soils (Δ66Znextract: P5-P0 = -0.39 to -0.10‰). This was resulted from the equilibrium replenishment of Zn bound to iron (Fe) and manganese (Mn) oxides based on Zn isotopic and chemical speciation analysis. Zinc showed opposite fractionation patterns to Cd in the same plant-soil system with heavy Cd isotope enrichment in S. plumbizincicola (Δ114/110Cdshoot-extract = 0.02-0.17‰) and in the NH4OAc-extractable pool after repeated phytoextraction (Δ114/110Cdextract: P5-P0 = 0.07-0.18‰). This indicates different mechanisms of membrane transport (high-affinity transport of Cd) and supplementation of the bioavailable pool in soil (Cd supplied mainly through complexation with root-derived organic ligands) of the two metals. The combination of chemical speciation and stable Zn isotope ratios in the plant and the bioavailable soil pool reveal that the Zn pool related to Fe and Mn oxides became increasingly bioavailable with increasing crop generations. Capsule: Stable isotope analysis indicates that soil Fe- and Mn-oxide bound Zn replenishment boosted Zn uptake by the hyperaccumulator Sedum plumbizincicola during long-term remediation.
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Affiliation(s)
- Jiawen Zhou
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhu Li
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Xingchao Zhang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Huimin Yu
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Longhua Wu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Fang Huang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China.
| | - Yongming Luo
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Peter Christie
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Thakur M, Praveen S, Divte PR, Mitra R, Kumar M, Gupta CK, Kalidindi U, Bansal R, Roy S, Anand A, Singh B. Metal tolerance in plants: Molecular and physicochemical interface determines the "not so heavy effect" of heavy metals. Chemosphere 2022; 287:131957. [PMID: 34450367 DOI: 10.1016/j.chemosphere.2021.131957] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 05/27/2023]
Abstract
An increase in technological interventions and ruthless urbanization in the name of development has deteriorated our environment over time and caused the buildup of heavy metals (HMs) in the soil and water resources. These heavy metals are gaining increased access into our food chain through the plant and/or animal-based products, to adversely impact human health. The issue of how to restrict the entry of HMs or modulate their response in event of their ingress into the plant system is worrisome. The current knowledge on the interactive-regulatory role and contribution of different physical, biophysical, biochemical, physiological, and molecular factors that determine the heavy metal availability-uptake-partitioning dynamics in the soil-plant-environment needs to be updated. The present review critically analyses the interactive overlaps between different adaptation and tolerance strategies that may be causally related to their cellular localization, conjugation and homeostasis, a relative affinity for the transporters, rhizosphere modifications, activation of efflux pumps and vacuolar sequestration that singly or collectively determine a plant's response to HM stress. Recently postulated role of gaseous pollutants such as SO2 and other secondary metabolites in heavy metal tolerance, which may be regulated at the whole plant and/or tissue/cell is discussed to delineate and work towards a "not so heavy" response of plants to heavy metals present in the contaminated soils.
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Affiliation(s)
- Meenakshi Thakur
- College of Horticulture and Forestry (Dr. Y.S. Parmar University of Horticulture and Forestry), Neri, Hamirpur, 177 001, Himachal Pradesh, India
| | - Shamima Praveen
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Pandurang R Divte
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Raktim Mitra
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Mahesh Kumar
- ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413 115, India
| | - Chandan Kumar Gupta
- Division of Plant Physiology and Biochemistry, ICAR-Indian Institute of Sugarcane Research, Lucknow, 226 002, India
| | - Usha Kalidindi
- Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Ruchi Bansal
- Division of Germplasm Evaluation, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012, India
| | - Suman Roy
- ICAR-Central Research Institute for Jute and Allied Fibres, Barrackpore, Kolkata, 700 120, India
| | - Anjali Anand
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
| | - Bhupinder Singh
- Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
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Seregin IV, Kozhevnikova AD. Low-molecular-weight ligands in plants: role in metal homeostasis and hyperaccumulation. Photosynth Res 2021; 150:51-96. [PMID: 32653983 DOI: 10.1007/s11120-020-00768-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Mineral nutrition is one of the key factors determining plant productivity. In plants, metal homeostasis is achieved through the functioning of a complex system governing metal uptake, translocation, distribution, and sequestration, leading to the maintenance of a regulated delivery of micronutrients to metal-requiring processes as well as detoxification of excess or non-essential metals. Low-molecular-weight ligands, such as nicotianamine, histidine, phytochelatins, phytosiderophores, and organic acids, play an important role in metal transport and detoxification in plants. Nicotianamine and histidine are also involved in metal hyperaccumulation, which determines the ability of some plant species to accumulate a large amount of metals in their shoots. In this review we extensively summarize and discuss the current knowledge of the main pathways for the biosynthesis of these ligands, their involvement in metal uptake, radial and long-distance transport, as well as metal influx, isolation and sequestration in plant tissues and cell compartments. It is analyzed how diverse endogenous ligand levels in plants can determine their different tolerance to metal toxic effects. This review focuses on recent advances in understanding the physiological role of these compounds in metal homeostasis, which is an essential task of modern ionomics and plant physiology. It is of key importance in studying the influence of metal deficiency or excess on various physiological processes, which is a prerequisite to the improvement of micronutrient uptake efficiency and crop productivity and to the development of a variety of applications in phytoremediation, phytomining, biofortification, and nutritional crop safety.
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Affiliation(s)
- I V Seregin
- K.A. Timiryazev Institute of Plant Physiology RAS, IPPRAS, Botanicheskaya st., 35, Moscow, Russian Federation, 127276.
| | - A D Kozhevnikova
- K.A. Timiryazev Institute of Plant Physiology RAS, IPPRAS, Botanicheskaya st., 35, Moscow, Russian Federation, 127276
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Anisimov VS, Anisimova LN, Sanzharov AI. Zinc Plant Uptake as Result of Edaphic Factors Acting. Plants (Basel) 2021; 10:plants10112496. [PMID: 34834859 PMCID: PMC8623681 DOI: 10.3390/plants10112496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
The influence of soil characteristics on the lability and bioavailability of zinc at both background and phytotoxic concentrations in Albic Retisol soil (Loamic, Ochric) was studied using various methods. Ranges of insufficient, non-phytotoxic, and phytotoxic zinc concentrations in soil solutions were established in an experiment with an aqueous barley culture. It was experimentally revealed that for a wide range of non-toxic concentrations of Zn in the soil corresponding to the indicative type of plant response, there was constancy of the concentration ratio (CR) and concentration factor (CF) migration parameters. As a result, a new method for assessing the buffer capacity of soils with respect to Zn (PBCZn) is proposed. The transformation processes of the chemical forms and root uptake of native (natural) zinc contained in the Albic Retisol (Loamic, Ochric) through the aqueous culture of barley were studied using a cyclic lysimetric installation and radioactive 65Zn tracer. The distribution patterns of Zn(65Zn) between different forms (chemical fractions) in the soil were established using the sequential fractionation scheme of BCR. The coefficients of distribution and concentration factors of natural Zn and 65Zn, as well as accumulation and removal of the metal by plants were estimated. The values of the enrichment factor of natural (stable) Zn contained in sequentially extracted chemical fractions with the 65Zn radioisotope were determined and the amount of the pool of labile zinc compounds in the studied soil was calculated.
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Li S, Liu Z, Guo L, Li H, Nie X, Chai S, Zheng W. Genome-Wide Identification of Wheat ZIP Gene Family and Functional Characterization of the TaZIP13-B in Plants. Front Plant Sci 2021; 12:748146. [PMID: 34804090 PMCID: PMC8595109 DOI: 10.3389/fpls.2021.748146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
The ZIP (Zn-regulated, iron-regulated transporter-like protein) transporter plays an important role in regulating the uptake, transport, and accumulation of microelements in plants. Although some studies have identified ZIP genes in wheat, the significance of this family is not well understood, particularly its involvement under Fe and Zn stresses. In this study, we comprehensively characterized the wheat ZIP family at the genomic level and performed functional verification of three TaZIP genes by yeast complementary analysis and of TaZIP13-B by transgenic Arabidopsis. Totally, 58 TaZIP genes were identified based on the genome-wide search against the latest wheat reference (IWGSC_V1.1). They were then classified into three groups, based on phylogenetic analysis, and the members within the same group shared the similar exon-intron structures and conserved motif compositions. Expression pattern analysis revealed that the most of TaZIP genes were highly expressed in the roots, and nine TaZIP genes displayed high expression at grain filling stage. When exposed to ZnSO4 and FeCl3 solutions, the TaZIP genes showed differential expression patterns. Additionally, six ZIP genes responded to zinc-iron deficiency. A total of 57 miRNA-TaZIP interactions were constructed based on the target relationship, and three miRNAs were downregulated when exposed to the ZnSO4 and FeCl3 stresses. Yeast complementation analysis proved that TaZIP14-B, TaZIP13-B, and TaIRT2-A could transport Zn and Fe. Finally, overexpression of TaZIP13-B in Arabidopsis showed that the transgenic plants displayed better tolerance to Fe/Zn stresses and could enrich more metallic elements in their seeds than wild-type Arabidopsis. This study systematically analyzed the genomic organization, gene structure, expression profiles, regulatory network, and the biological function of the ZIP family in wheat, providing better understanding of the regulatory roles of TaZIPs and contributing to improve nutrient quality in wheat crops.
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Fasani E, DalCorso G, Zorzi G, Agrimonti C, Fragni R, Visioli G, Furini A. Overexpression of ZNT1 and NRAMP4 from the Ni Hyperaccumulator Noccaea caerulescens Population Monte Prinzera in Arabidopsis thaliana Perturbs Fe, Mn, and Ni Accumulation. Int J Mol Sci 2021; 22:ijms222111896. [PMID: 34769323 PMCID: PMC8584810 DOI: 10.3390/ijms222111896] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/28/2021] [Accepted: 10/31/2021] [Indexed: 12/29/2022] Open
Abstract
Metalliferous soils are characterized by a high content of metal compounds that can hamper plant growth. The pseudometallophyte Noccaea caerulescens is able to grow on metalliferous substrates by implementing both tolerance and accumulation of usually toxic metal ions. Expression of particular transmembrane transporter proteins (e.g., members of the ZIP and NRAMP families) leads to metal tolerance and accumulation, and its comparison between hyperaccumulator N. caerulescens with non-accumulator relatives Arabidopsis thaliana and Thlaspi arvense has deepened our knowledge on mechanisms adopted by plants to survive in metalliferous soils. In this work, two transporters, ZNT1 and NRAMP4, expressed in a serpentinic population of N. caerulescens identified on the Monte Prinzera (Italy) are considered, and their expression has been induced in yeast and in A. thaliana. In the latter, single transgenic lines were crossed to test the effect of the combined over-expression of the two transporters. An enhanced iron and manganese translocation towards the shoot was induced by overexpression of NcZNT1. The combined overexpression of NcZNT1 and NcNRAMP4 did perturb the metal accumulation in plants.
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Affiliation(s)
- Elisa Fasani
- Department of Biotechnology, University of Verona, Str. Le Grazie 15, 37134 Verona, Italy; (E.F.); (G.D.); (G.Z.)
| | - Giovanni DalCorso
- Department of Biotechnology, University of Verona, Str. Le Grazie 15, 37134 Verona, Italy; (E.F.); (G.D.); (G.Z.)
| | - Gianluca Zorzi
- Department of Biotechnology, University of Verona, Str. Le Grazie 15, 37134 Verona, Italy; (E.F.); (G.D.); (G.Z.)
| | - Caterina Agrimonti
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/a, 43124 Parma, Italy;
| | - Rosaria Fragni
- SSICA, Experimental Station for the Food Preserving Industry, Viale F. Tanara 31/A, 43121 Parma, Italy;
| | - Giovanna Visioli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/a, 43124 Parma, Italy;
- Correspondence: (G.V.); (A.F.); Tel.: +39-0521905692 (G.V.); +39-0458027950 (A.F.)
| | - Antonella Furini
- Department of Biotechnology, University of Verona, Str. Le Grazie 15, 37134 Verona, Italy; (E.F.); (G.D.); (G.Z.)
- Correspondence: (G.V.); (A.F.); Tel.: +39-0521905692 (G.V.); +39-0458027950 (A.F.)
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Yin Z, Zhang Y, Hu N, Shi Y, Li T, Zhao Z. Differential responses of 23 maize cultivar seedlings to an arbuscular mycorrhizal fungus when grown in a metal-polluted soil. Sci Total Environ 2021; 789:148015. [PMID: 34051499 DOI: 10.1016/j.scitotenv.2021.148015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 05/09/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
Modern breeding efforts have been accelerating crop improvement and yielding numerous cultivars with distinct genetic traits; however, interactions between different cultivars and their root-associated arbuscular mycorrhizal fungi (AMF) are not clear. Herein, we selected the 22 most common commercial maize (Zea mays) varieties in China and an inbred line (B73) to study the differential responses of these 23 cultivars to mycorrhizal inoculation when grown in an arable soil polluted by multiple metals (Pb, Zn, and Cd). We found that the different cultivars exhibited significant variations in plant metal accumulation, ranging from strong metal exclusion (ZYY9) to strong metal accumulation (B73). Mycorrhizal colonization substantially altered metal uptake and repartitioning, while bioaugmenting the inherent characteristics of metal accumulation; for example, the AMF enhanced leaf accumulation of the metal-accumulator B73, and markedly reduced the root uptake of the metal-excluder ZYY9. However, such AMF-induced alterations were also substantially dependent on plant organs (roots and shoots) and metal species. We found that the extent of the AMF-induced leaf alterations was substantially greater than that of the root alterations. Similarly, the number of instances where the AMF significantly altered the Zn and Cd accumulation was far higher than the number of instances where Pb accumulation was significantly altered by AMF. In addition, the presence of AMF appeared to trigger the maize antioxidant systems, which may have alleviated the toxicity of excessive Cd, increased the leaf chlorophyll content, augmented the net photosynthetic rate, and promoted the growth of 17.39% of the maize cultivars. Our results suggest that a future crop breeding challenge is to produce cultivars for safe production or phytoremediation, thereby optimizing the combinations of crop cultivars and their root-associated AMF in slightly to moderately metal-polluted arable soils.
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Affiliation(s)
- Zepeng Yin
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming 650091, PR China
| | - Yan Zhang
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming 650091, PR China
| | - Na Hu
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming 650091, PR China
| | - Yichen Shi
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming 650091, PR China
| | - Tao Li
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming 650091, PR China.
| | - Zhiwei Zhao
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming 650091, PR China.
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Rai GK, Bhat BA, Mushtaq M, Tariq L, Rai PK, Basu U, Dar AA, Islam ST, Dar TUH, Bhat JA. Insights into decontamination of soils by phytoremediation: A detailed account on heavy metal toxicity and mitigation strategies. Physiol Plant 2021; 173:287-304. [PMID: 33864701 DOI: 10.1111/ppl.13433] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/19/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
In the current era of rapid industrialization, the foremost challenge is the management of industrial wastes. Activities such as mining and industrialization spill over a large quantity of toxic waste that pollutes soil, water, and air. This poses a major environmental and health challenge. The toxic heavy metals present in the soil and water are entering the food chain, which in turn causes severe health hazards. Environmental clean-up and reclamation of heavy metal contaminated soil and water are very important, and it necessitates efforts of environmentalists, industrialists, scientists, and policymakers. Phytoremediation is a plant-based approach to remediate heavy metal/organic pollutant contaminated soil and water in an eco-friendly, cost-effective, and permanent way. This review covers the effect of heavy metal toxicity on plant growth and physiological process, the concept of heavy metal accumulation, detoxification, and the mechanisms of tolerance in plants. Based on plants' ability to uptake heavy metals and metabolize them within tissues, phytoremediation techniques have been classified into six types: phytoextraction, phytoimmobilization, phytovolatilization, phytodegradation, rhizofiltration, and rhizodegradation. The development of research in this area led to the identification of metal hyper-accumulators, which could be utilized for reclamation of contaminated soil through phytomining. Concurrently, breeding and biotechnological approaches can enhance the remediation efficiency. Phytoremediation technology, combined with other reclamation technologies/practices, can provide clean soil and water to the ecosystem.
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Affiliation(s)
- Gyanendra K Rai
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Basharat A Bhat
- Department of Bioresources, University of Kashmir, Jammu and Kashmir, India
| | - Muntazir Mushtaq
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Lubna Tariq
- Department of Biotechnology, BGSB University, Jammu and Kashmir, India
| | - Pradeep K Rai
- Advance Center for Horticulture, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Umer Basu
- Division of Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Aejaz A Dar
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Sheikh T Islam
- Department of Bioresources, University of Kashmir, Jammu and Kashmir, India
| | - Tanvir U H Dar
- Department of Biotechnology, BGSB University, Jammu and Kashmir, India
| | - Javaid A Bhat
- Ministry of Agriculture (MOA) Key Laboratory of Biology and Genetic Improvement of Soybean (General), State Key Laboratory for Crop Genetics and Germplasm Enhancement, Soybean Research Institute, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, China
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Zhang Y, Chao J, Li X, Zhang C, Khan R, Du S, Xu N, Song L, Liu H, Shi Y. Comparative transcriptome combined with biochemical and physiological analyses provide new insights toward cadmium accumulation with two contrasting Nicotiana species. Physiol Plant 2021; 173:369-383. [PMID: 33880749 DOI: 10.1111/ppl.13431] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/06/2021] [Accepted: 04/14/2021] [Indexed: 06/12/2023]
Abstract
Cadmium (Cd) is known as one of the most hazardous elements in the environment and a persistent soil constraint toxic to all flora and fauna. In this study, we conducted physiological, biochemical, and transcriptomic analyses of Nicotiana rustica (N. rustica) and Nicotiana tabacum (N. tabacum) treated with CdCl2 to know the underlying molecular mechanisms of Cd accumulation. As a result, N. rustica had more dry weight than N. tabacum. Additionally, N. rustica accumulated higher Cd concentration (69.65 times), Cd2+ influx (1.32-fold), glutathione S-transferases (GST) enzyme activity (2.54 times), GSH/GSSG (oxidized form of GSH) ratio, increase of superoxide dismutase and CAT and a lower H2 O2 and superoxide (O2 •- ) accumulation in their roots than N. tabacum. Cd mainly distributed in the cytoplasm of both species and N. rustica had a significant proportion in the cell wall. Furthermore, the transcriptomic analysis revealed 173 and 710 differentially expressed genes (DEGs) between control and Cd-stressed plants in the leaves and roots of N. rustica, while 576 and 1543 DEGs were found in the leaves and roots of N. tabacum, respectively. In N. rustica, phenylpropanoid biosynthesis and phenylalanine metabolism were the most enriched pathways, while GSH metabolism, ATP-binding cassette transporters and phenylpropanoid biosynthesis were the most enriched in N. tabacum. Finally, we found that DEGs related to metal influx, sequestration, remobilization, and chelation were responsible for Cd accumulation. These results indicated that N. rustica accumulated higher Cd content than N. tabacum, suggesting that each species utilized different response mechanism under the same Cd stress conditions. The DEGs identified in this study might lead to the identification of genes or pathways related to Cd regulation. This study identifies important regulators related to Cd accumulation.
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Affiliation(s)
- Yan Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
- Graduate School of Chinese Academy of Agricultural Science, Beijing, China
| | - Jiangtao Chao
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
- Graduate School of Chinese Academy of Agricultural Science, Beijing, China
| | - Xiuchun Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
- Graduate School of Chinese Academy of Agricultural Science, Beijing, China
| | - Chong Zhang
- Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Rayyan Khan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
| | - Shasha Du
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
| | - Na Xu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
| | - Lin Song
- Shandong Provincial Key Laboratory of Biochemical Engineering, College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Qingdao, China
| | - Haiwei Liu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
| | - Yi Shi
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao, China
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Chen YG, He XLS, Huang JH, Luo R, Ge HZ, Wołowicz A, Wawrzkiewicz M, Gładysz-Płaska A, Li B, Yu QX, Kołodyńska D, Lv GY, Chen SH. Impacts of heavy metals and medicinal crops on ecological systems, environmental pollution, cultivation, and production processes in China. Ecotoxicol Environ Saf 2021; 219:112336. [PMID: 34044310 DOI: 10.1016/j.ecoenv.2021.112336] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/20/2021] [Accepted: 05/10/2021] [Indexed: 06/12/2023]
Abstract
Heavy metals are widely distributed in the environment due to the natural processes and anthropogenic human activities. Their migration into no contaminated areas contributing towards pollution of the ecosystems e.g. soils, plants, water and air. It is recognized that heavy metals due to their toxicity, long persistence in nature can accumulate in the trophic chain and cause organism dysfunction. Although the popularity of herbal medicine is rapidly increasing all over the world heavy metal toxicity has a great impact and importance on herbal plants and consequently affects the quality of herbal raw materials, herbal extracts, the safety and marketability of drugs. Effective control of heavy metal content in herbal plants using in pharmaceutical and food industries has become indispensable. Therefore, this review describes various important factors such as ecological and environmental pollution, cultivation and harvest of herbal plants and manufacturing processes which effects on the quality of herbal plants and then on Chinese herbal medicines which influence human health. This review also proposes possible management strategies to recover environmental sustainability and medication safety. About 276 published studies (1988-2021) are reviewed in this paper.
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Affiliation(s)
- Yi-Gong Chen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Chaowang Road 18, Hangzhou, Zhejiang Province, China
| | - Xing-Li-Shang He
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Chaowang Road 18, Hangzhou, Zhejiang Province, China
| | - Jia-Hui Huang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Chaowang Road 18, Hangzhou, Zhejiang Province, China
| | - Rong Luo
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Chaowang Road 18, Hangzhou, Zhejiang Province, China
| | - Hong-Zhang Ge
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Chaowang Road 18, Hangzhou, Zhejiang Province, China
| | - Anna Wołowicz
- Department of Inorganic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie Sklodowska Sq. 2, 20-031 Lublin, Poland
| | - Monika Wawrzkiewicz
- Department of Inorganic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie Sklodowska Sq. 2, 20-031 Lublin, Poland
| | - Agnieszka Gładysz-Płaska
- Department of Inorganic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie Sklodowska Sq. 2, 20-031 Lublin, Poland
| | - Bo Li
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Chaowang Road 18, Hangzhou, Zhejiang Province, China
| | - Qiao-Xian Yu
- Zhejiang Senyu Co., Ltd, No. 8 Wanmao Road, Choujiang Street, Yiwu City, Zhejiang Province, China
| | - Dorota Kołodyńska
- Department of Inorganic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie Sklodowska Sq. 2, 20-031 Lublin, Poland.
| | - Gui-Yuan Lv
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, Zhejiang Province, China.
| | - Su-Hong Chen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Chaowang Road 18, Hangzhou, Zhejiang Province, China.
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Alam MR, Tran TKA, Stein TJ, Rahman MM, Griffin AS, Yu RMK, MacFarlane GR. Accumulation and distribution of metal(loid)s in the halophytic saltmarsh shrub, Austral seablite, Suaeda australis in New South Wales, Australia. Mar Pollut Bull 2021; 169:112475. [PMID: 34022559 DOI: 10.1016/j.marpolbul.2021.112475] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/03/2021] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
We examined the patterns of uptake and partitioning of metal(loid)s in Suaeda australis from three highly urbanised estuaries (Sydney Olympic Park, Hunter Wetlands and Lake Macquarie) in NSW, Australia. Of these, Sydney Olympic Park was found to be the most contaminated estuary in terms of combined sediment metal(loid) load, followed by Hunter Wetlands and lowest in Lake Macquarie (via PERMANOVA). Uptake in roots was greater for the essential metals Cu and Zn along with the non-essential metal Cd and the metalloid Se (root BCFs >1) and lower for Pb and As (root BCFs <1). Substantial barriers for translocation from roots to stems were identified for all metal(loid)s (stem TFs; 0.07-0.68). Conversely, unrestricted flow from stems to leaves was observed for all metal(loid)s at unity or higher (leaf TFs ≥ 1). Strong linear relationships between sediment and root for Zn and Pb were observed, indicating roots as a useful bioindicator.
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Affiliation(s)
- Md Rushna Alam
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; Department of Aquaculture, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh
| | - Thi Kim Anh Tran
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; School of Agriculture and Resources, Vinh University, Viet Nam
| | - Taylor J Stein
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Andrea S Griffin
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; School of Psychology, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Richard Man Kit Yu
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Geoff R MacFarlane
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia.
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Tibbett M, Green I, Rate A, De Oliveira VH, Whitaker J. The transfer of trace metals in the soil-plant-arthropod system. Sci Total Environ 2021; 779:146260. [PMID: 33744587 DOI: 10.1016/j.scitotenv.2021.146260] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/26/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Essential and non-essential trace metals are capable of causing toxicity to organisms above a threshold concentration. Extensive research has assessed the behaviour of trace metals in biological and ecological systems, but has typically focused on single organisms within a trophic level and not on multi-trophic transfer through terrestrial food chains. This reinforces the notion of metal toxicity as a closed system, failing to consider one trophic level as a pollution source to another; therefore, obscuring the full extent of ecosystem effects. Given the relatively few studies on trophic transfer of metals, this review has taken a compartment-based approach, where transfer of metals through trophic pathways is considered as a series of linked compartments (soil-plant-arthropod herbivore-arthropod predator). In particular, we consider the mechanisms by which trace metals are taken up by organisms, the forms and transformations that can occur within the organism and the consequences for trace metal availability to the next trophic level. The review focuses on four of the most prevalent metal cations in soil which are labile in terrestrial food chains: Cd, Cu, Zn and Ni. Current knowledge of the processes and mechanisms by which these metals are transformed and moved within and between trophic levels in the soil-plant-arthropod system are evaluated. We demonstrate that the key factors controlling the transfer of trace metals through the soil-plant-arthropod system are the form and location in which the metal occurs in the lower trophic level and the physiological mechanisms of each organism in regulating uptake, transformation, detoxification and transfer. The magnitude of transfer varies considerably depending on the trace metal concerned, as does its toxicity, and we conclude that biomagnification is not a general property of plant-arthropod and arthropod-arthropod systems. To deliver a more holistic assessment of ecosystem toxicity, integrated studies across ecosystem compartments are needed to identify critical pathways that can result in secondary toxicity across terrestrial food-chains.
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Affiliation(s)
- Mark Tibbett
- Department of Sustainable Land Management & Soil Research Centre, School of Agriculture Policy and Development, University of Reading, Whiteknights, RG6 6AR, UK.
| | - Iain Green
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, Dorset BH12 5BB, UK
| | - Andrew Rate
- School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia
| | - Vinícius H De Oliveira
- Department of Plant Biology, Institute of Biology, University of Campinas, Campinas, Sao Paulo 13083-970, Brazil
| | - Jeanette Whitaker
- UK Centre for Ecology & Hydrology, Lancaster Environment Centre, Library Avenue, Lancaster LA1 4AP, UK
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Alam MR, Islam R, Anh Tran TK, Van DL, Rahman MM, Griffin AS, Yu RMK, MacFarlane GR. Global patterns of accumulation and partitioning of metals in halophytic saltmarsh taxa: A phylogenetic comparative approach. J Hazard Mater 2021; 414:125515. [PMID: 33662792 DOI: 10.1016/j.jhazmat.2021.125515] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 02/10/2021] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
The current study represents the first attempt to analyse quantitatively, within a phylogenetic framework, uptake and partitioning patterns of copper (Cu), zinc (Zn), cadmium (Cd) and lead (Pb) in extant saltmarsh taxa globally, and to assess associations of these patterns with various plant traits indicative of their halophytic adaptations. Despite saltmarsh being diverse taxonomically, most saltmarsh taxa accumulate metals to roots at, or above, unity (> 1). Further, there is significant translocation from roots to shoot for Cu, Zn and Cd (≤ 1), however, Pb is less mobile (TF = 0.65). Patterns of accumulation were similar among families, except greater Cd accumulation to roots in members of Juncaceae. Patterns of uptake to roots and translocation to leaves were broadly similar among plant type, plant form, habitat and photosynthetic mode. Zinc is lower in the leaves of salt-secreting species for some closely related taxa, suggesting some species co-excrete sodium (Na+) and Zn2+ through glands in leaf tissue. Salinity tolerance has no relationship to metal uptake and translocation. Translocation of Zn is greater at lower Zn sediment exposures, reflecting its active uptake and essentiality, but such bias does not affect outcomes of analyses when included as a covariate.
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Affiliation(s)
- Md Rushna Alam
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; Department of Aquaculture, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh
| | - Rafiquel Islam
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia 7003, Bangladesh
| | - Thi Kim Anh Tran
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; School of Agriculture and Resources, Vinh University, Viet Nam
| | - Diep Le Van
- School of Biochemical Technology-Environment, Vinh University, Viet Nam
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Andrea S Griffin
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; School of Psychology, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Richard Man Kit Yu
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Geoff R MacFarlane
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia.
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Woraharn S, Meeinkuirt W, Phusantisampan T, Avakul P. Potential of ornamental monocot plants for rhizofiltration of cadmium and zinc in hydroponic systems. Environ Sci Pollut Res Int 2021; 28:35157-35170. [PMID: 33666846 DOI: 10.1007/s11270-021-05156-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 02/22/2021] [Indexed: 05/27/2023]
Abstract
Cadmium (Cd) and zinc (Zn) accumulation and uptake ability have been investigated in three ornamental monocot plants (Heliconia psittacorum x H. spathocircinata, Echinodorus cordifolius, and Pontederia cordata) grown in hydroponic systems. All study plants in the highest heavy metal treatments were found to be excluders for Cd and Zn with translocation factor values < 1 and bioconcentration factor (BCF) values > 100. The highest Cd and Zn accumulations were found in roots of E. cordifolius (4766.6 mg Zn kg-1 and 6141.6 mg Cd kg-1), followed by H. psittacorum x H. spathocircinata (4313.5 mg Zn kg-1) and P. cordata (3673.3 mg Cd kg-1), respectively, whereas shoots had lower performances. However, P. cordata had the lowest dry biomass production compared to the other two plant species in this study. As a result of dilution effects, heavy metal accumulation for all study plants was lower in the combined heavy metal treatments than in solely Cd and Zn only treatments. At the end of experiments, the highest uptakes of Cd and Zn were found in H. psittacorum x H. spathocircinata (62.1% Zn2+ from 10 mg Zn L-1 solution) and E. cordifolius (27.3% Cd2+ from 2 mg Cd L-1 solution). Low percentage metal uptakes were found in P. cordata; therefore, E. cordifolius and H. psittacorum x H. spathocircinata are clearly better suited for removing Cd and/or Zn from contaminated waters and hydroponic systems.
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Affiliation(s)
- Sasimar Woraharn
- Mahidol University, Nakhonsawan Campus, Nakhonsawan, 60130, Thailand
| | - Weeradej Meeinkuirt
- Mahidol University, Nakhonsawan Campus, Nakhonsawan, 60130, Thailand.
- Water and Soil Environmental Research Unit, Nakhonsawan Campus, Mahidol University, Nakhonsawan, 60130, Thailand.
| | - Theerawut Phusantisampan
- Department of Biotechnology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok, 10800, Thailand
| | - Piyathap Avakul
- Mahidol University, Nakhonsawan Campus, Nakhonsawan, 60130, Thailand
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Yan X, Huang Y, Song H, Chen F, Geng Q, Hu M, Zhang C, Wu X, Fan T, Cao S. A MYB4-MAN3-Mannose-MNB1 signaling cascade regulates cadmium tolerance in Arabidopsis. PLoS Genet 2021; 17:e1009636. [PMID: 34181654 DOI: 10.1371/journal.pgen.1009636] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 07/09/2021] [Accepted: 06/02/2021] [Indexed: 11/25/2022] Open
Abstract
Our previous studies showed that MAN3-mediated mannose plays an important role in plant responses to cadmium (Cd) stress. However, the underlying mechanisms and signaling pathways involved are poorly understood. In this study, we showed that an Arabidopsis MYB4-MAN3-Mannose-MNB1 signaling cascade is involved in the regulation of plant Cd tolerance. Loss-of-function of MNB1 (mannose-binding-lectin 1) led to decreased Cd accumulation and tolerance, whereas overexpression of MNB1 significantly enhanced Cd accumulation and tolerance. Consistently, expression of the genes involved in the GSH-dependent phytochelatin (PC) synthesis pathway (such as GSH1, GSH2, PCS1, and PCS2) was significantly reduced in the mnb1 mutants but markedly increased in the MNB1-OE lines in the absence or presence of Cd stress, which was positively correlated with Cd-activated PC synthesis. Moreover, we found that mannose is able to bind to the GNA-related domain of MNB1, and that mannose binding to the GNA-related domain of MNB1 is required for MAN3-mediated Cd tolerance in Arabidopsis. Further analysis showed that MYB4 directly binds to the promoter of MAN3 to positively regulate the transcript of MAN3 and thus Cd tolerance via the GSH-dependent PC synthesis pathway. Consistent with these findings, overexpression of MAN3 rescued the Cd-sensitive phenotype of the myb4 mutant but not the mnb1 mutant, whereas overexpression of MNB1 rescued the Cd-sensitive phenotype of the myb4 mutant. Taken together, our results provide compelling evidence that a MYB4-MAN3-Mannose-MNB1 signaling cascade regulates cadmium tolerance in Arabidopsis through the GSH-dependent PC synthesis pathway. Cadmium (Cd) pollution in soils is recognized as an environmental problem worldwide, and phytoremediation is one of the important approaches for cleaning Cd-contaminated soils. However, the molecular mechanisms involved in Cd tolerance remains unclear. Here we demonstrated that overexpression of MNB1, which encodes a mannose-binding lectin, manifestly increased Cd tolerance, whereas loss-of-function of MNB1 led to enhanced Cd sensitivity. Further analysis showed that mannose binding to the GNA-related domain of MNB1 is required for MAN3-mediated Cd tolerance. Moreover, under Cd stress, MYB4 directly binds the promoter of MAN3 to positively regulate the expression of MAN3, and thus Cd tolerance via the glutathione (GSH)-dependent phytochelatin (PC) synthesis pathway. Our results demonstrated that a MYB4-MAN3-Mannose-MNB1 signaling cascade regulates Cd tolerance through the GSH-dependent PC synthesis pathway in Arabidopsis.
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Abstract
Metal uptake, transport and storage in plants depend on specialized ligands with closely related functions. Individual studies differing by species, nutrient availability, tissue type, etc. are not comprehensive enough to understand plant metal homeostasis in its entirety. A thorough review is required that distinguishes the role of ligands directly involved in chelation from the myriad of plant responses to general stress. Distinguishing between the functions of metal chelating compounds is the primary focus of this review; reactive oxygen species mediation and other aspects of metal homeostasis are also discussed. High molecular weight ligands (polysaccharides, phytochelatin, metallothionein), low molecular weight ligands (nicotianamine, histidine, secondary metabolites) and select studies which demonstrate the complex nature of plant metal homeostasis are explored.
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Affiliation(s)
- James T Carrillo
- University of Hawaii at Manoa, Department of Molecular Biology and Bioengineering, 1955 East-West Road, Agricultural Sciences 218, Honolulu, HI, 96822, USA.
| | - Dulal Borthakur
- University of Hawaii at Manoa, Department of Molecular Biology and Bioengineering, 1955 East-West Road, Agricultural Sciences 218, Honolulu, HI, 96822, USA.
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Pan C, Lu H, Yang C, Wang L, Chen J, Yan C. Comparative transcriptome analysis reveals different functions of Kandelia obovata superoxide dismutases in regulation of cadmium translocation. Sci Total Environ 2021; 771:144922. [PMID: 33736147 DOI: 10.1016/j.scitotenv.2020.144922] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Kandelia obovata is a dominant mangrove species in southeastern of China. This species has a high tolerance to heavy metal stress that is mainly ascribed to the thickening of the secondary exodermis and high activity of superoxide dismutase (SOD) enzymes in the roots. The thickened exodermis inhibits entry of heavy metals into the roots, and oxidative stress due to Cd can be reduced efficiently by SOD activity. Although there are several proposed mechanisms by which genes encoding SODs in K. obovata (KoSODs) could induce lignification that contributes to thickening of the root exodermis, the exact functions of FeSOD2 (KoFSD2) and Cu/ZnSOD3 (KoCSD3) remain unclear. In this study we investigated the role of a thickened exodermis in K. obovata root tissues in response to Cd treatment, and determined functions of KoFSD2 and KoCSD3 by performing comparative transcriptome analysis on tobacco lines that overexpress these two enzymes. we found that a thickened exodermis can reduce Cd uptake, and that exposure to high concentrations Cd can promote secondary thickening processes in K. obovata roots exodermis. Transgenic Nicotiana benthamiana overexpressing of KoFSD2 or KoCSD3 exhibit different responses to Cd stress. KoCSD3 can promote thickening of the secondary cell wall of root vascular tissues to impede Cd entry. Meanwhile, KoFSD2 and KoCSD3 can also regulate translocation of copper and iron in response to Cd accumulation. Taken together, our results expand our understanding of the physiological roles of SODs in K. obovata against Cd stress.
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Affiliation(s)
- Chenglang Pan
- Institute of Oceanography, Minjiang University, Fuzhou, Fujian, PR China.
| | - Haoliang Lu
- Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Chuanyu Yang
- Texas A&M university-Kingsville citrus center, Weslaco, USA
| | - Lu Wang
- Institute of Oceanography, Minjiang University, Fuzhou, Fujian, PR China
| | - Jianming Chen
- Institute of Oceanography, Minjiang University, Fuzhou, Fujian, PR China.
| | - Chongling Yan
- Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China.
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Ważny R, Rozpądek P, Domka A, Jędrzejczyk RJ, Nosek M, Hubalewska-Mazgaj M, Lichtscheidl I, Kidd P, Turnau K. The effect of endophytic fungi on growth and nickel accumulation in Noccaea hyperaccumulators. Sci Total Environ 2021; 768:144666. [PMID: 33736318 DOI: 10.1016/j.scitotenv.2020.144666] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 12/02/2020] [Accepted: 12/16/2020] [Indexed: 05/05/2023]
Abstract
The role of endophytic fungi isolated from different populations of European Ni hyperaccumulators was investigated in regard to the microorganisms' ability to enhance the hyperaccumulation of Ni in Noccaea caerulescens. Effects of particular species of endophytic fungi on adaptation of N. caerulescens to excess Ni were tested by co-cultivation with single strains of the fungi. Seven of these had a positive effect on plant biomass production, whereas two of the tested species inhibited plant growth; biomass production of inoculated plants was significantly different compared to non-inoculated control. Inoculation with six fungal strains: Embellisia thlaspis, Pyrenochaeta cava, Phomopsis columnaris, Plectosphaerella cucumerina, Cladosporium cladosporioides and Alternaria sp. stimulated the plant to uptake and accumulate more Ni in both roots and shoots, compared to non-inoculated control. P. columnaris was isolated from all plant species sampled. Strains isolated from Noccaea caerulescens and Noccaea goesingensis increased Ni root and shoot accumulation of their native hosts (compared to non-inoculated control). Inoculation of different populations of Noccaea with P. columnaris of foreign origin did not cause its host to accumulate more Ni, with the exception of the Ni-unadapted ecotype of N. goesingensis. Inoculation with P. columnaris from N. caerulescens significantly improved Ni uptake, but the effect of the fungus was not as prominent as in the case of N. caerulescens. By comparing the transcriptomes of N. caerulescens and N. goesingensis from Flatz inoculated with P. columnaris, we showed that enhanced uptake and accumulation of Ni in the plants is accompanied by an upregulation of several genes mainly involved in plant stress protection and metal uptake and compartmentation.
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Affiliation(s)
- Rafał Ważny
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland.
| | - Piotr Rozpądek
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland
| | - Agnieszka Domka
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland
| | - Roman J Jędrzejczyk
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland
| | - Michał Nosek
- Institute of Biology, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland
| | | | - Irene Lichtscheidl
- Core Facility of Cell Imaging and Ultrastructure Research, University of Vienna, Austria
| | - Petra Kidd
- Instituto de Investigaciones Agrobiológicas de Galicia, Consejo Superior de Investigaciones Científicas (CSIC), Av. de Vigo, 15705 Santiago de Compostela, Spain
| | - Katarzyna Turnau
- Institute of Environmental Sciences, Jagiellonian University in Kraków, Gronostajowa 7, 30-387 Kraków, Poland
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Jiang Y, Han J, Xue W, Wang J, Wang B, Liu L, Zou J. Overexpression of SmZIP plays important roles in Cd accumulation and translocation, subcellular distribution, and chemical forms in transgenic tobacco under Cd stress. Ecotoxicol Environ Saf 2021; 214:112097. [PMID: 33667736 DOI: 10.1016/j.ecoenv.2021.112097] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/17/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
Plant ZIP genes represent an important transporter family and may be involved in cadmium (Cd) accumulation and Cd resistance. In order to explore the function of SmZIP isolated from Salix matsudana, the roles of SmZIP in Cd tolerance, uptake, translocation, and distribution were determined in the present investigation. The transgenic SmZIP tobacco was found to respond to external Cd stress differently from WT tobacco by exhibiting a higher growth rate and more vigorous phenotype. The overexpression of SmZIP in tobacco resulted in the reduction of Cd stress-induced phytotoxic effects. Compared to WT tobacco, the Cd content of the root, stem, and leaf in the transgenic tobacco increased, and the zinc, iron, copper, and manganese contents also increased. The assimilation factor, translocation factor and bioconcentration factor of Cd were improved. The scanning electron microscopy and energy dispersive X-ray analysis results of the root maturation zone exposed to Cd for 24 h showed that Cd was transferred through the root epidermis, cortex, and vascular cylinder and migrated to the aboveground parts via the vascular cylinder, resulting in the transgenic tobacco accumulating more Cd than the WT plants. Based on the transverse section of the leaf main vein and leaf blade, Cd was transported through the vascular tissues to the leaves and accumulated more greatly in the leaf epidermis, but less in the leaf mesophyll cells, following the overexpression of SmZIP to reduce the photosynthetic toxicity. The overexpression of SmZIP resulted in the redistribution of Cd at the subcellular level, a decrease in the percentage of Cd in the cell wall, and an increase of the Cd in the soluble fraction in both the roots and leaves. It also changed the percentage composition of different Cd chemical forms by elevating the proportion of Cd extracted using 2% HAc and 0.6 mol/L HCl, but lowering that of the Cd extracted using 1 mol/L NaCl in both the leaves and roots under 10 and 100 μmol/L Cd stress for 28 d. The results implied that SmZIP played important roles in advancing Cd uptake, accumulation, and translocation, as well as in enhancing Cd resistance by altering the Cd subcellular distribution and chemical forms in the transgenic tobacco. The study will be useful for future phytoremediation applications to clean up Cd-contaminated soil.
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Affiliation(s)
- Yi Jiang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Jiahui Han
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Wenxiu Xue
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Jiayue Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China; Tianjin Wutong Middle School, China
| | - Binghan Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Liangjing Liu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Jinhua Zou
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China.
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do Nascimento CWA, Hesterberg D, Tappero R. Imaging Zn and Ni distributions in leaves of different ages of the hyperaccumulator Noccaea caerulescens by synchrotron-based X-ray fluorescence. J Hazard Mater 2021; 408:124813. [PMID: 33385722 DOI: 10.1016/j.jhazmat.2020.124813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
Mapping of leaves of hyperaccumulators can provide insights into the mechanisms these species utilize to accumulate high metal concentrations. We used synchrotron-based X-ray fluorescence (SXRF) to perform Zn and Ni imaging in leaves of different ages of Noccaea caerulescens. A mature leaf of the related non-hyperaccumulator Thlaspi arvense was also imaged. The concentrations of Zn, Ni, Co, and Cr in N. caerulescens grown on an ultramafic soil were 9-, 10-, 12-, and 3-fold higher than T. arvense. N. caerulescens showed an exceptional ability to accumulate Zn from the soil, posing a bioconcentration factor of 6.7. T. arvense had Zn and Ni distributed uniformly in the leaf blade with doubling fluorescence counts in the tip and margins, suggesting a strategy to excrete metals and avoid toxicity. On the other hand, N. caerulescens displayed distinctly different Zn and Ni accumulation patterns, regardless of the age or metal concentration in the leaves. Zinc was mainly distributed in the cells surrounding the central and secondary veins. Nickel accumulated in the margins and tips of the leaf blade. Given the time required to image large leaves in synchrotron facilities, small leaves can be used to represent the leaf distribution of Zn and Ni in N. caerulescens.
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Affiliation(s)
| | - Dean Hesterberg
- North Carolina State University, Crop and Soil Sciences Department, Raleigh, NC 27695, USA
| | - Ryan Tappero
- Brookhaven National Laboratory, NSLS-II, Upton, NY 11973, USA
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