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Riaz M, Kamran M, Rizwan M, Ali S, Parveen A, Malik Z, Wang X. Cadmium uptake and translocation: selenium and silicon roles in Cd detoxification for the production of low Cd crops: a critical review. CHEMOSPHERE 2021; 273:129690. [PMID: 33524757 DOI: 10.1016/j.chemosphere.2021.129690] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/17/2021] [Accepted: 01/20/2021] [Indexed: 05/10/2023]
Abstract
Cadmium (Cd) is a primary contaminant in agricultural soils of the world. The ability of Cd uptake, transport, detoxification, and accumulation varies among different plant species and genotypes. Cd is translocated from soil to root by different transporters which are used for essential plant nutrient uptake. A number of strategies have been suggested for decreasing Cd toxicity in Cd contaminated soils. Recently, a lot of research have been carried out on minimizing Cd uptake through selenium (Se) and silicon (Si) applications. Both Se and Si have been reported to mitigate Cd toxicity in different crops. Vacuolar sequestration, formation of phytochelatins, and cell wall adsorption have been reported as effective mechanisms for Cd detoxification. The present review discussed past and current knowledge of literature to better understand Cd toxicity and its mitigation by adopting different feasible and practical approaches.
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Affiliation(s)
- Muhammad Riaz
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China
| | - Muhammad Kamran
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University Allama Iqbal Road, 38000, Faisalabad, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan
| | - Aasma Parveen
- Department of Soil Science, Faculty of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Punjab, Pakistan
| | - Zaffar Malik
- Department of Soil Science, Faculty of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, 63100, Punjab, Pakistan
| | - Xiurong Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Root Biology Center, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, Guangdong, PR China.
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Salavati J, Fallah H, Niknejad Y, Barari Tari D. Methyl jasmonate ameliorates lead toxicity in Oryza sativa by modulating chlorophyll metabolism, antioxidative capacity and metal translocation. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:1089-1104. [PMID: 34092952 PMCID: PMC8140021 DOI: 10.1007/s12298-021-00993-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/15/2021] [Accepted: 04/07/2021] [Indexed: 05/21/2023]
Abstract
Lead (Pb) not only negatively alters plant growth and yield but may also have potentially toxic risks to human health. Nevertheless, the interaction between rice (Oryza sativa L.) plants and the molecular cell dynamics induced by lead-methyl jasmonate (MJ) remains unknown. Here, plants were hydroponically exposed to Pb (150 and 300 µM) alone or in combination with 0.5 and 1 µM MJ. The application of MJ modulated the expression of the HMAs, PCS1, PCS2 and ABCC1 genes, thereby immobilizing the Pb in the roots and lessening its translocation to the aerial parts of the rice plant. The supplementation of MJ improved the growth and yield of Pb-stressed rice by adjusting the proline and chlorophyll metabolism, increasing the phytochelatins (PCs) accumulation and diminishing the accumulation of Pb in the shoots. the application of MJ alleviated the oxidative stress of rice plants exposed to Pb toxicity by enhancing the activity of antioxidant enzymes and enzymes of the glyoxalase system (glyoxalase I and II) and decreasing the endogenous levels of malondialdehyde (MDA), hydrogen peroxide (H2O2) and methylglyoxal (MG). Therefore, the results of the present study could provide a molecular insight and cellular interplay scheme for the development of a promising strategy in Pb-contaminated areas to produce healthy food.
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Affiliation(s)
- Javad Salavati
- Department of Agronomy, Islamic Azad University of Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Hormoz Fallah
- Department of Agronomy, Islamic Azad University of Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Yosoof Niknejad
- Department of Agronomy, Islamic Azad University of Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Davood Barari Tari
- Department of Agronomy, Islamic Azad University of Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
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Copper: uptake, toxicity and tolerance in plants and management of Cu-contaminated soil. Biometals 2021; 34:737-759. [PMID: 33909216 DOI: 10.1007/s10534-021-00306-z] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/15/2021] [Indexed: 01/15/2023]
Abstract
Copper (Cu) is an essential mineral nutrient for the proper growth and development of plants; it is involved in myriad morphological, physiological, and biochemical processes. Copper acts as a cofactor in various enzymes and performs essential roles in photosynthesis, respiration and the electron transport chain, and is a structural component of defense genes. Excess Cu, however, imparts negative effects on plant growth and productivity. Many studies have summarized the adverse effects of excess Cu on germination, growth, photosynthesis, and antioxidant response in agricultural crops. Its inhibitory influence on mineral nutrition, chlorophyll biosynthesis, and antioxidant enzyme activity has been verified. The current review focuses on the availability and uptake of Cu by plants. The toxic effects of excess Cu on seed germination, plant growth and development, photosynthesis, and antioxidant response in plants are discussed. Plant tolerance mechanisms against Cu stress, and management of Cu-contaminated soils are presented.
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Chen X, Jiang W, Tong T, Chen G, Zeng F, Jang S, Gao W, Li Z, Mak M, Deng F, Chen ZH. Molecular Interaction and Evolution of Jasmonate Signaling With Transport and Detoxification of Heavy Metals and Metalloids in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:665842. [PMID: 33936156 PMCID: PMC8079949 DOI: 10.3389/fpls.2021.665842] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
An increase in environmental pollution resulting from toxic heavy metals and metalloids [e.g., cadmium (Cd), arsenic (As), and lead (Pb)] causes serious health risks to humans and animals. Mitigation strategies need to be developed to reduce the accumulation of the toxic elements in plant-derived foods. Natural and genetically-engineered plants with hyper-tolerant and hyper-accumulating capacity of toxic minerals are valuable for phytoremediation. However, the molecular mechanisms of detoxification and accumulation in plants have only been demonstrated in very few plant species such as Arabidopsis and rice. Here, we review the physiological and molecular aspects of jasmonic acid and the jasmonate derivatives (JAs) in response to toxic heavy metals and metalloids. Jasmonates have been identified in, limiting the accumulation and enhancing the tolerance to the toxic elements, by coordinating the ion transport system, the activity of antioxidant enzymes, and the chelating capacity in plants. We also propose the potential involvement of Ca2+ signaling in the stress-induced production of jasmonates. Comparative transcriptomics analyses using the public datasets reveal the key gene families involved in the JA-responsive routes. Furthermore, we show that JAs may function as a fundamental phytohormone that protects plants from heavy metals and metalloids as demonstrated by the evolutionary conservation and diversity of these gene families in a large number of species of the major green plant lineages. Using ATP-Binding Cassette G (ABCG) transporter subfamily of six representative green plant species, we propose that JA transporters in Subgroup 4 of ABCGs may also have roles in heavy metal detoxification. Our paper may provide guidance toward the selection and development of suitable plant and crop species that are tolerant to toxic heavy metals and metalloids.
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Affiliation(s)
- Xuan Chen
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Wei Jiang
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Tao Tong
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Guang Chen
- Central Laboratory, Zhejiang Academy of Agricultural Science, Hangzhou, China
| | - Fanrong Zeng
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Sunghoon Jang
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, South Korea
| | - Wei Gao
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, China
| | - Zhen Li
- School of Agriculture, Jinhua Polytechnic, Jinhua, China
| | - Michelle Mak
- School of Science, Western Sydney University, Penrith, NSW, Australia
| | - Fenglin Deng
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, NSW, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
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Vidal C, Larama G, Riveros A, Meneses C, Cornejo P. Main Molecular Pathways Associated with Copper Tolerance Response in Imperata cylindrica by de novo Transcriptome Assembly. PLANTS (BASEL, SWITZERLAND) 2021; 10:357. [PMID: 33668499 PMCID: PMC7918359 DOI: 10.3390/plants10020357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/04/2021] [Accepted: 02/07/2021] [Indexed: 12/20/2022]
Abstract
The metallophyte Imperata cylindrica inhabits copper (Cu) polluted soils in large areas from Central Chile. Here, we subjected clonal vegetative plantlets to 300 mg Cu kg-1 of substrate for 21 days to identify the main molecular pathways involved in the response to Cu stress. Transcriptomic analyses were performed for shoots and roots, with and without Cu supply. RNA-Seq and de novo transcriptome assembly were performed to identify the gene response associated with molecular mechanisms of Cu tolerance in I. cylindrica. De novo transcriptome revealed a total of 200,521 transcripts (1777 bp) comprising ~91% complete ultra-conserved genes in the eukaryote and Plantae database. The differentially expressed genes (DEGs) in roots were 7386, with 3558 of them being up-regulated and the other 3828 down-regulated. The transcriptome response in shoots was significantly less, showing only 13 up-regulated and 23 down-regulated genes. Interestingly, DEGs mainly related with actin and cytoskeleton formation, and to a minor degree, some DEGs associated with metal transporters and superoxide dismutase activity in root tissues were found. These transcriptomic results suggest that cytoskeleton could be acting as a mechanism of Cu-binding in the root, resulting in a high Cu tolerance response in this metallophyte, which deserve to be analyzed ultra-structurally. Our study contributes to reinforcing the potential of I. cylindrica as a candidate plant species to be used as a phytoremediation agent in Cu-contaminated environments.
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Affiliation(s)
- Catalina Vidal
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile;
- Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile
| | - Giovanni Larama
- Centro de Modelación y Computación Científica, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile;
| | - Aníbal Riveros
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile; (A.R.); (C.M.)
- FONDAP Center for Genome Regulation, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile
| | - Claudio Meneses
- Centro de Biotecnología Vegetal, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile; (A.R.); (C.M.)
- FONDAP Center for Genome Regulation, Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 330, Santiago 8370186, Chile
| | - Pablo Cornejo
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Avda. Francisco Salazar, Temuco 4780000, Chile;
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A Smart and Sustainable Future for Viticulture Is Rooted in Soil: How to Face Cu Toxicity. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11030907] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In recent decades, agriculture has faced the fundamental challenge of needing to increase food production and quality in order to meet the requirements of a growing global population. Similarly, viticulture has also been undergoing change. Several countries are reducing their vineyard areas, and several others are increasing them. In addition, viticulture is moving towards higher altitudes and latitudes due to climate change. Furthermore, global warming is also exacerbating the incidence of fungal diseases in vineyards, forcing farmers to apply agrochemicals to preserve production yields and quality. The repeated application of copper (Cu)-based fungicides in conventional and organic farming has caused a stepwise accumulation of Cu in vineyard soils, posing environmental and toxicological threats. High Cu concentrations in soils can have multiple impacts on agricultural systems. In fact, it can (i) alter the chemical-physical properties of soils, thus compromising their fertility; (ii) induce toxicity phenomena in plants, producing detrimental effects on growth and productivity; and (iii) affect the microbial biodiversity of soils, thereby influencing some microbial-driven soil processes. However, several indirect (e.g., management of rhizosphere processes through intercropping and/or fertilization strategies) and direct (e.g., exploitation of vine resistant genotypes) strategies have been proposed to restrain Cu accumulation in soils. Furthermore, the application of precision and smart viticulture paradigms and their related technologies could allow a timely, localized and balanced distribution of agrochemicals to achieve the required goals. The present review highlights the necessity of applying multidisciplinary approaches to meet the requisites of sustainability demanded of modern viticulture.
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Kumar V, Pandita S, Singh Sidhu GP, Sharma A, Khanna K, Kaur P, Bali AS, Setia R. Copper bioavailability, uptake, toxicity and tolerance in plants: A comprehensive review. CHEMOSPHERE 2021; 262:127810. [PMID: 32763578 DOI: 10.1016/j.chemosphere.2020.127810] [Citation(s) in RCA: 156] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/14/2020] [Accepted: 07/21/2020] [Indexed: 05/04/2023]
Abstract
Copper (Cu) is an essential element for humans and plants when present in lesser amount, while in excessive amounts it exerts detrimental effects. There subsists a narrow difference amid the indispensable, positive and detrimental concentration of Cu in living system, which substantially alters with Cu speciation, and form of living organisms. Consequently, it is vital to monitor its bioavailability, speciation, exposure levels and routes in the living organisms. The ingestion of Cu-laced food crops is the key source of this heavy metal toxicity in humans. Hence, it is necessary to appraise the biogeochemical behaviour of Cu in soil-plant system with esteem to their quantity and speciation. On the basis of existing research, this appraisal traces a probable connexion midst: Cu levels, sources, chemistry, speciation and bioavailability in the soil. Besides, the functions of protein transporters in soil-plant Cu transport, and the detrimental effect of Cu on morphological, physiological and nutrient uptake in plants has also been discussed in the current manuscript. Mechanisms related to detoxification strategies like antioxidative response and generation of glutathione and phytochelatins to combat Cu-induced toxicity in plants is discussed as well. We also delimits the Cu accretion in food crops and allied health perils from soils encompassing less or high Cu quantity. Finally, an overview of various techniques involved in the reclamation and restoration of Cu-contaminated soils has been provided.
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Affiliation(s)
- Vinod Kumar
- Department of Botany, Government Degree College, Ramban, Jammu, 182144, India.
| | - Shevita Pandita
- Department of Botany, University of Jammu, Jammu and Kashmir, India
| | - Gagan Preet Singh Sidhu
- Centre for Applied Biology in Environment Sciences, Kurukshetra University, Kurukshetra, 136119, India
| | - Anket Sharma
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China
| | - Kanika Khanna
- Independent Researcher, House No.282, Lane no. 3, Friends Colony, Opposite DAV College, Jalandhar, 144008, Punjab, India
| | - Parminder Kaur
- Independent Researcher, House No. 472, Ward No. 8, Dhariwal, Gurdaspur, 143519, Punjab, India
| | - Aditi Shreeya Bali
- Department of Botany, Dyal Singh College, Karnal, Haryana, 132001, India
| | - Raj Setia
- Punjab Remote Sensing Centre, Ludhiana, India
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Navarro BB, Del Frari BK, Dias PVDC, Lemainski LE, Mario RB, Ponte LR, Goergen A, Tarouco CP, Neves VM, Dressler VL, Fett JP, Brunetto G, Sperotto RA, Nicoloso FT, Ricachenevsky FK. The copper economy response is partially conserved in rice (Oryza sativa L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 158:113-124. [PMID: 33307423 DOI: 10.1016/j.plaphy.2020.11.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
Copper (Cu) is an essential element for plants, especially in photosynthesis, as it is required for plastocyanin function in electron transfer reactions at thylakoid membranes. In Arabidopsis thaliana, Cu deficiency leads to the Cu economy response, in which plants prioritize Cu usage by plastocyanin in detriment of non-essential cupric proteins. In rice (Oryza sativa), however, this response has not been characterized. Rice OsHMA5 is a Cu xylem-loading transporter involved in Cu translocation from roots to shoots, as suggested by the analysis of oshma5 mutant plants. Aiming to understand how rice plants respond to Cu deficiency and how decreased Cu translocation to shoots can affect this response, we characterized the physiological and molecular responses of WT and oshma5 plants under control and Cu deficiency treatments. We found evidence that shoots of oshma5 plants are more prone to Cu deficiency compared to shoots of WT plants, as demonstrated by decreased chlorophyll and Cu concentrations, and electron transport rate. Gene expression analysis revealed that Cu high-affinity transporters OsCOPT1 and OsCOPT5, along with a set of miRNAs and three Cu/Zn superoxide dismutases are responsive to Cu deficiency in both WT and oshma5 plants, suggesting their involvement in the Cu economy response. However, Fe superoxide dismutase was not up-regulated in rice, indicating a difference compared to the A. thaliana Cu economy model. Therefore, we provide evidence for a partially conserved Cu economy response in rice, in comparison to A. thaliana.
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Affiliation(s)
- Bruno Bachiega Navarro
- Programa de Pós-Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Bianca Knebel Del Frari
- Programa de Pós-Graduação em Agronomia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | | | | | | | - Lucas Roani Ponte
- Curso de Agronomia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Andrei Goergen
- Curso de Agronomia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | | | | | | | - Janette Palma Fett
- Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Gustavo Brunetto
- Departamento de Solos, Programa de Pós-Graduação em Ciências do Solo, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Raul Antonio Sperotto
- Programa de Pós-Graduação em Biotecnologia, Universidade do Vale do Taquari - Univates, Lajeado, Brazil
| | - Fernando Teixeira Nicoloso
- Programa de Pós-Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil; Programa de Pós-Graduação em Agronomia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Felipe Klein Ricachenevsky
- Programa de Pós-Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil; Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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He G, Qin L, Tian W, Meng L, He T, Zhao D. Heavy Metal Transporters-Associated Proteins in S. tuberosum: Genome-Wide Identification, Comprehensive Gene Feature, Evolution and Expression Analysis. Genes (Basel) 2020; 11:genes11111269. [PMID: 33126505 PMCID: PMC7694169 DOI: 10.3390/genes11111269] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/20/2020] [Accepted: 10/25/2020] [Indexed: 02/07/2023] Open
Abstract
Plants have evolved a number of defense and adaptation responses to protect themselves against challenging environmental stresses. Genes containing a heavy metal associated (HMA) domain are required for the spatiotemporal transportation of metal ions that bind with various enzymes and co-factors within the cell. To uncover the underlying mechanisms mediated by StHMA genes, we identified 36 gene members in the StHMA family and divided them into six subfamilies by phylogenetic analysis. The StHMAs had high collinearity and were segmentally duplicated. Structurally, most StHMAs had one HMA domain, StHIPPc and StRNA1 subfamilies had two, and 13 StHMAs may be genetically variable. The StHMA gene structures and motifs varied considerably among the various classifications, this suggests the StHMA family is diverse in genetic functions. The promoter analysis showed that the StHMAs had six main cis-acting elements with abiotic stress. An expression pattern analysis revealed that the StHMAs were expressed tissue specifically, and a variety of abiotic stresses may induce the expression of StHMA family genes. The HMA transporter family may be regulated and expressed by a series of complex signal networks under abiotic stress. The results of this study may help to establish a theoretical foundation for further research investigating the functions of HMA genes in Solanum tuberosum to elucidate their regulatory role in the mechanism governing the response of plants to abiotic stress.
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Affiliation(s)
- Guandi He
- The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering and College of Life Sciences, Guizhou University, Guiyang 550025, China; (G.H.); (L.Q.)
| | - Lijun Qin
- The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering and College of Life Sciences, Guizhou University, Guiyang 550025, China; (G.H.); (L.Q.)
| | - Weijun Tian
- Agricultural College, Guizhou University, Guiyang 550025, China; (W.T.); (L.M.)
| | - Lulu Meng
- Agricultural College, Guizhou University, Guiyang 550025, China; (W.T.); (L.M.)
| | - Tengbing He
- Agricultural College, Guizhou University, Guiyang 550025, China; (W.T.); (L.M.)
- Institute of New Rural Development of Guizhou University, Guiyang 550025, China
- Correspondence: (T.H.); (D.Z.)
| | - Degang Zhao
- The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering and College of Life Sciences, Guizhou University, Guiyang 550025, China; (G.H.); (L.Q.)
- Guizhou Academy of Agricultural Science, Guiyang 550025, China
- Correspondence: (T.H.); (D.Z.)
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Wang J, Zhao J, Feng S, Zhang J, Gong S, Qiao K, Zhou A. Comparison of cadmium uptake and transcriptional responses in roots reveal key transcripts from high and low-cadmium tolerance ryegrass cultivars. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 203:110961. [PMID: 32888621 DOI: 10.1016/j.ecoenv.2020.110961] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/22/2020] [Accepted: 06/28/2020] [Indexed: 06/11/2023]
Abstract
Cadmium (Cd), which seriously affects plant growth and crop production, is harmful to humans. Previous studies revealed ryegrass (Lolium multiflorum Lam.) exhibits Cd tolerance, and may be useful as a potential hyperaccumulator because of its wide distribution. In this study, the physiological and transcriptional responses of two ryegrass cultivars [i.e., high (LmHC) and low (LmLC) Cd tolerance] to Cd stress were investigated and compared. The Cd tolerance of LmHC was greater than that of LmLC at various Cd concentrations. The uptake of Evans blue dye revealed that Cd-induced root cell mortality was higher in LmLC than in LmHC after a 12-h Cd treatment. Furthermore, the content and influx rate of Cd in LmLC roots were greater than in LmHC roots under Cd stress conditions. The RNA sequencing and quantitative real-time PCR data indicated that the Cd transport regulatory genes (ABCG37, ABCB4, NRAMP4, and HMA5) were differentially expressed between the LmLC and LmHC roots. This expression-level diversity may contribute to the differences in the Cd accumulation and translocation between LmLC and LmHC. These findings may help clarify the physiological and molecular mechanisms underlying ryegrass responses to Cd toxicity. Additionally, ryegrass may be able to hyperaccumulate toxic heavy metals during the phytoremediation of contaminated soil.
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Affiliation(s)
- Jingang Wang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Junchao Zhao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shuang Feng
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, 150040, PR China; College of Life Science, Northeast Forestry University, Harbin, 150040, PR China
| | - Jinzhu Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Shufang Gong
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Kun Qiao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China.
| | - Aimin Zhou
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China.
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Whitt L, Ricachenevsky FK, Ziegler GZ, Clemens S, Walker E, Maathuis FJM, Kear P, Baxter I. A curated list of genes that affect the plant ionome. PLANT DIRECT 2020; 4:e00272. [PMID: 33103043 PMCID: PMC7576880 DOI: 10.1002/pld3.272] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 05/07/2023]
Abstract
Understanding the mechanisms underlying plants' adaptation to their environment will require knowledge of the genes and alleles underlying elemental composition. Modern genetics is capable of quickly, and cheaply indicating which regions of DNA are associated with particular phenotypes in question, but most genes remain poorly annotated, hindering the identification of candidate genes. To help identify candidate genes underlying elemental accumulations, we have created the known ionome gene (KIG) list: a curated collection of genes experimentally shown to change uptake, accumulation, and distribution of elements. We have also created an automated computational pipeline to generate lists of KIG orthologs in other plant species using the PhytoMine database. The current version of KIG consists of 176 known genes covering 5 species, 23 elements, and their 1588 orthologs in 10 species. Analysis of the known genes demonstrated that most were identified in the model plant Arabidopsis thaliana, and that transporter coding genes and genes altering the accumulation of iron and zinc are overrepresented in the current list.
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Affiliation(s)
- Lauren Whitt
- Donald Danforth Plant Science CenterSaint LouisMOUSA
| | - Felipe Klein Ricachenevsky
- Departamento de Botânica Programa de Pós‐Graduação em Biologia Celular e MolecularUniversidade Federal do Rio Grande do SulPorto AlegreBrazil
| | | | | | | | | | | | - Ivan Baxter
- Donald Danforth Plant Science CenterSaint LouisMOUSA
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Chang JD, Huang S, Yamaji N, Zhang W, Ma JF, Zhao FJ. OsNRAMP1 transporter contributes to cadmium and manganese uptake in rice. PLANT, CELL & ENVIRONMENT 2020; 43:2476-2491. [PMID: 32666540 DOI: 10.1111/pce.13843] [Citation(s) in RCA: 143] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 05/23/2023]
Abstract
Rice is a major dietary source of the toxic metal, cadmium (Cd). Previous studies reported that the rice transporter, OsNRAMP1, (Natural resistance-associated macrophage protein 1) could transport iron (Fe), Cd and arsenic (As) in heterologous yeast assays. However, the in planta function of OsNRAMP1 remains unknown. Here, we showed that OsNRAMP1 was able to transport Cd and manganese (Mn) when expressed in yeast, but did not transport Fe or As. OsNRAMP1 was mainly expressed in roots and leaves and encoded a plasma membrane-localized protein. OsNRAMP1 expression was induced by Cd treatment and Fe deficiency. Immunostaining showed that OsNRAMP1 was localized in all root cells, except the central vasculature, and in leaf mesophyll cells. The knockout of OsNRAMP1 resulted in significant decreases in root uptake of Cd and Mn and their accumulation in rice shoots and grains, and increased sensitivity to Mn deficiency. The knockout of OsNRAMP1 had smaller effects on Cd and Mn uptake than knockout of OsNRAMP5, while knockout of both genes resulted in large decreases in the uptake of the two metals. Taken together, OsNRAMP1 contributes significantly to the uptake of Mn and Cd in rice, and the functions of OsNRAMP1 and OsNRAMP5 are similar but not redundant.
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Affiliation(s)
- Jia-Dong Chang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Sheng Huang
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Wenwen Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Fang-Jie Zhao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
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63
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Phytoremediation of Cadmium: Physiological, Biochemical, and Molecular Mechanisms. BIOLOGY 2020; 9:biology9070177. [PMID: 32708065 PMCID: PMC7407403 DOI: 10.3390/biology9070177] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 12/15/2022]
Abstract
Cadmium (Cd) is one of the most toxic metals in the environment, and has noxious effects on plant growth and production. Cd-accumulating plants showed reduced growth and productivity. Therefore, remediation of this non-essential and toxic pollutant is a prerequisite. Plant-based phytoremediation methodology is considered as one a secure, environmentally friendly, and cost-effective approach for toxic metal remediation. Phytoremediating plants transport and accumulate Cd inside their roots, shoots, leaves, and vacuoles. Phytoremediation of Cd-contaminated sites through hyperaccumulator plants proves a ground-breaking and profitable choice to combat the contaminants. Moreover, the efficiency of Cd phytoremediation and Cd bioavailability can be improved by using plant growth-promoting bacteria (PGPB). Emerging modern molecular technologies have augmented our insight into the metabolic processes involved in Cd tolerance in regular cultivated crops and hyperaccumulator plants. Plants’ development via genetic engineering tools, like enhanced metal uptake, metal transport, Cd accumulation, and the overall Cd tolerance, unlocks new directions for phytoremediation. In this review, we outline the physiological, biochemical, and molecular mechanisms involved in Cd phytoremediation. Further, a focus on the potential of omics and genetic engineering strategies has been documented for the efficient remediation of a Cd-contaminated environment.
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Shi K, Liu X, Zhu Y, Bai Y, Shan D, Zheng X, Wang L, Zhang H, Wang C, Yan T, Zhou F, Hu Z, Sun Y, Guo Y, Kong J. MdWRKY11 improves copper tolerance by directly promoting the expression of the copper transporter gene MdHMA5. HORTICULTURE RESEARCH 2020; 7:105. [PMID: 32637133 PMCID: PMC7327004 DOI: 10.1038/s41438-020-0326-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 04/16/2020] [Accepted: 04/20/2020] [Indexed: 05/30/2023]
Abstract
Overuse of fungicides and fertilizers has resulted in copper (Cu) contamination of soils and toxic levels of Cu in apple fruits. To breed Cu-resistant apple (Malus domestica) cultivars, the underlying molecular mechanisms and key genes involved in Cu resistance must be identified. Here, we show that MdWRKY11 increases Cu tolerance by directly promoting the transcription of MdHMA5. MdHMA5 is a Cu transporter that may function in the storage of excess Cu in root cell walls and stems for Cu tolerance in apple. The transcription factor MdWRKY11 is highly induced by excess Cu. MdWRKY11 overexpression in transgenic apple enhanced Cu tolerance and decreased Cu accumulation. Apple calli transformed with an MdWRKY11-RNAi construct exhibited the opposite phenotype. Both an in vivo chromatin immunoprecipitation assay and an in vitro electrophoretic mobility shift assay indicated that MdWRKY11 binds to the promoter of MdHMA5. Furthermore, MdWRKY11 promoted MdHMA5 expression in transgenic apple plants, as revealed by quantitative PCR. Moreover, inhibition of MdWRKY11 expression by RNA interference led to a significant decrease in MdHMA5 transcription. Thus, MdWRKY11 directly regulates MdHMA5 transcription. Our work resulted in the identification of a novel MdWRKY11-MdHMA5 pathway that mediates Cu resistance in apple.
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Affiliation(s)
- Kun Shi
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Xuan Liu
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Yunpeng Zhu
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Yixue Bai
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Dongqian Shan
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Xiaodong Zheng
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Lin Wang
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Haixia Zhang
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Chanyu Wang
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Tianci Yan
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Fangfang Zhou
- College of Horticulture, China Agricultural University, 100193 Beijing, China
- College of Biological Sciences, China Agricultural University, 100193 Beijing, China
| | - Zehui Hu
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Yanzhao Sun
- College of Horticulture, China Agricultural University, 100193 Beijing, China
| | - Yan Guo
- College of Biological Sciences, China Agricultural University, 100193 Beijing, China
| | - Jin Kong
- College of Horticulture, China Agricultural University, 100193 Beijing, China
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65
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Zhang BQ, Liu XS, Feng SJ, Zhao YN, Wang LL, Rono JK, Li H, Yang ZM. Developing a cadmium resistant rice genotype with OsHIPP29 locus for limiting cadmium accumulation in the paddy crop. CHEMOSPHERE 2020; 247:125958. [PMID: 32069726 DOI: 10.1016/j.chemosphere.2020.125958] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 01/05/2020] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
Widespread contamination of agricultural soil with toxic metals such as cadmium (Cd) is a major threat to crop production and human health. Metallochaperones are a unique class of proteins that play pivotal roles in detoxifying metallic ions inside cells. In this study, we investigated the biological function of an uncharacterized metallochaperone termed OsHIPP29 in rice plants and showed that OsHIPP29 resides in the plasma membrane and nucleus and detoxifies excess Cd and Zn. OsHIPP29 was primarily expressed in shoots during the vegetative stage and in leaf sheath and spikelet at the flowering stage. It can be differentially induced by excess Cd, Zn, Cu, Fe and Mn. To identify the function of OsHIPP29 in mediating rice response to Cd stress, we examined a pair of OsHIPP29 mutants, RNAi lines and transgenic rice overexpressing OsHIPP29 (OX) under Cd stress. Both mutant and RNAi lines are sensitive to Cd in growth as reflected in decreased plant height and dry biomass. In contrast, the OX lines showed better growth under Cd exposure. Consistent with the phenotype, the OX lines accumulated less Cd in both root and shoot tissues, whereas OsHIPP29 knockout led to higher accumulation of Cd. These results point out that expression of OsHIPP29 is able to contribute to Cd detoxification by reducing Cd accumulation in rice plants. Our work highlights the significance of OsHIPP29-mediated reduced Cd in rice plants, with important implications for further developing genotypes that will minimize Cd accumulation in rice and environmental risks to human health.
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Affiliation(s)
- Bai Qing Zhang
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xue Song Liu
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Sheng Jun Feng
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ya Ning Zhao
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lei Lei Wang
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Justice Kipkorir Rono
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - He Li
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhi Min Yang
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, 210095, China.
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66
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De Caroli M, Furini A, DalCorso G, Rojas M, Di Sansebastiano GP. Endomembrane Reorganization Induced by Heavy Metals. PLANTS (BASEL, SWITZERLAND) 2020; 9:E482. [PMID: 32283794 PMCID: PMC7238196 DOI: 10.3390/plants9040482] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/04/2020] [Accepted: 04/07/2020] [Indexed: 12/18/2022]
Abstract
Plant cells maintain plasmatic concentrations of essential heavy metal ions, such as iron, zinc, and copper, within the optimal functional range. To do so, several molecular mechanisms have to be committed to maintain concentrations of non-essential heavy metals and metalloids, such as cadmium, mercury and arsenic below their toxicity threshold levels. Compartmentalization is central to heavy metals homeostasis and secretory compartments, finely interconnected by traffic mechanisms, are determinant. Endomembrane reorganization can have unexpected effects on heavy metals tolerance altering in a complex way membrane permeability, storage, and detoxification ability beyond gene's expression regulation. The full understanding of endomembrane role is propaedeutic to the comprehension of translocation and hyper-accumulation mechanisms and their applicative employment. It is evident that further studies on dynamic localization of these and many more proteins may significantly contribute to the understanding of heavy metals tolerance mechanisms. The aim of this review is to provide an overview about the endomembrane alterations involved in heavy metals compartmentalization and tolerance in plants.
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Affiliation(s)
- Monica De Caroli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (M.D.C.); (M.R.)
| | - Antonella Furini
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (A.F.); (G.D.)
| | - Giovanni DalCorso
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (A.F.); (G.D.)
| | - Makarena Rojas
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (M.D.C.); (M.R.)
| | - Gian-Pietro Di Sansebastiano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, 73100 Lecce, Italy; (M.D.C.); (M.R.)
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67
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Wang P, Yamaji N, Inoue K, Mochida K, Ma JF. Plastic transport systems of rice for mineral elements in response to diverse soil environmental changes. THE NEW PHYTOLOGIST 2020; 226:156-169. [PMID: 31758804 DOI: 10.1111/nph.16335] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
Climate change will increase frequency of drought and flooding, which threaten global crop productivity and food security. Rice (Oryza sativa) is unique in that it is able to grow in both flooded and upland conditions, which have large differences in the concentrations and chemical forms of mineral elements available to plants. To comprehensively understand the mechanisms of rice for coping with different water status, we performed ionomics and transcriptomics analysis of the roots, nodes and leaves of rice grown in flooded and upland conditions. Focusing the analysis on genes encoding proteins involved in transport functions for mineral elements, it was found that, although rice plants maintained similar levels of each element in the shoots for optimal growth, different transporters for mineral elements were utilised for nitrogen, iron, copper and zinc to deal with different soil water conditions. For example, under flooded conditions, rice roots take up nitrogen using transporters for both ammonium (OsAMT1/2) and nitrate (OsNPF2.4, OsNRT1.1A and OsNRT2.3), whereas under upland conditions, nitrogen uptake is mediated by different nitrate transporters (OsNRT1.1B and OsNRT1.5A). This study shows that rice possesses plastic transport systems for mineral elements in response to different water conditions (upland and flooding).
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Affiliation(s)
- Peitong Wang
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan
| | - Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan
| | - Komaki Inoue
- RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, 230-0045, Japan
| | - Keiich Mochida
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan
- RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, 230-0045, Japan
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan
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68
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Ram H, Gandass N, Sharma A, Singh A, Sonah H, Deshmukh R, Pandey AK, Sharma TR. Spatio-temporal distribution of micronutrients in rice grains and its regulation. Crit Rev Biotechnol 2020; 40:490-507. [DOI: 10.1080/07388551.2020.1742647] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hasthi Ram
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Nishu Gandass
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Ankita Sharma
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Anmol Singh
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Humira Sonah
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Rupesh Deshmukh
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Ajay Kumar Pandey
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Tilak Raj Sharma
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
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69
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Huang X, Duan S, Wu Q, Yu M, Shabala S. Reducing Cadmium Accumulation in Plants: Structure-Function Relations and Tissue-Specific Operation of Transporters in the Spotlight. PLANTS (BASEL, SWITZERLAND) 2020; 9:E223. [PMID: 32050442 PMCID: PMC7076666 DOI: 10.3390/plants9020223] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/05/2020] [Accepted: 02/06/2020] [Indexed: 01/11/2023]
Abstract
Cadmium (Cd) is present in many soils and, when entering the food chain, represents a major health threat to humans. Reducing Cd accumulation in plants is complicated by the fact that most known Cd transporters also operate in the transport of essential nutrients such as Zn, Fe, Mn, or Cu. This work summarizes the current knowledge of mechanisms mediating Cd uptake, radial transport, and translocation within the plant. It is concluded that real progress in the field may be only achieved if the transport of Cd and the above beneficial micronutrients is uncoupled, and we discuss the possible ways of achieving this goal. Accordingly, we suggest that the major focus of research in the field should be on the structure-function relations of various transporter isoforms and the functional assessment of their tissue-specific operation. Of specific importance are two tissues. The first one is a xylem parenchyma in plant roots; a major "controller" of Cd loading into the xylem and its transport to the shoot. The second one is a phloem tissue that operates in the last step of a metal transport. Another promising and currently underexplored avenue is to understand the role of non-selective cation channels in Cd uptake and reveal mechanisms of their regulation.
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Affiliation(s)
- Xin Huang
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (X.H.); (S.D.); (Q.W.); (M.Y.)
| | - Songpo Duan
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (X.H.); (S.D.); (Q.W.); (M.Y.)
| | - Qi Wu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (X.H.); (S.D.); (Q.W.); (M.Y.)
| | - Min Yu
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (X.H.); (S.D.); (Q.W.); (M.Y.)
| | - Sergey Shabala
- International Research Center for Environmental Membrane Biology, Foshan University, Foshan 528000, China; (X.H.); (S.D.); (Q.W.); (M.Y.)
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart TAS 7001, Australia
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70
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Tan Y, Sun L, Song Q, Mao D, Zhou J, Jiang Y, Wang J, Fan T, Zhu Q, Huang D, Xiao H, Chen C. Genetic architecture of subspecies divergence in trace mineral accumulation and elemental correlations in the rice grain. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:529-545. [PMID: 31734869 DOI: 10.1007/s00122-019-03485-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 11/11/2019] [Indexed: 05/12/2023]
Abstract
Genome differentiation has shaped the divergence in element concentration between rice subspecies and contributed to the correlation among trace minerals in the rice grain. The balance between trace minerals in rice, a staple food for more than half of the world's population, is crucial for human health. However, the genetic basis underlying the correlation between trace minerals has not been fully elucidated. To address this issue, we first quantified the concentrations of 11 trace minerals in the grains of a diversity panel of 575 rice cultivars. We found that eight elements were accumulated at significantly different levels between the indica and japonica subspecies, and we also observed significant correlation patterns among a number of elements. Further, using a genome-wide association study, we identified a total of 96 significant association loci (SALs). The differentiation of the major-effect SALs along with the different number of high-concentration alleles present in the two subspecies shaped the different element performance in indica and japonica varieties. Only a few SALs located in clusters and the majority of SALs showed subspecies/subgroup differentiation, indicating that the correlations between elements in the diversity panel were mainly caused by genome differentiation instead of shared genetic basis. The genetic architecture unveiled in this study will facilitate improvement in breeding for trace mineral content.
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Affiliation(s)
- Yongjun Tan
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Liang Sun
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
| | - Qingnan Song
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Donghai Mao
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
| | - Jieqiang Zhou
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
| | - Youru Jiang
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
| | - Jiurong Wang
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
| | - Tony Fan
- University of Toronto, Toronto, M5S2E5, Canada
| | - Qihong Zhu
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
| | - Daoyou Huang
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China
| | - Han Xiao
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Caiyan Chen
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Innovation Academy for Seed Design, Chinese Academy of Sciences, Changsha, 410125, Hunan, China.
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71
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Yamaji N, Ma JF. Bioimaging of multiple elements by high-resolution LA-ICP-MS reveals altered distribution of mineral elements in the nodes of rice mutants. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 99:1254-1263. [PMID: 31108003 DOI: 10.1111/tpj.14410] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/30/2019] [Accepted: 05/14/2019] [Indexed: 05/07/2023]
Abstract
Inter-vascular transfer in rice (Oryza sativa) nodes is required for delivering mineral elements to developing tissues, which is mediated by various transporters in the nodes. However, the effect of these transporters on distribution of mineral elements in the nodes at a cellular level is still unknown. Here, we established a protocol for bioimaging of multiple elements at a cellular level in rice node by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), and compared the mineral distribution profile between wild-type (WT) rice and mutants. Both relative comparison of mineral distribution normalized by endogenous 13 C and quantitative analysis using spiked standards combined with soft ablation gave valid results. Overall, macro-nutrients such as K and Mg were accumulated more in the phloem region, while micro-nutrients such as Fe and Zn were highly accumulated at the inter-vascular tissues of the node. In mutants of nodal Zn transporter OsHMA2, Zn localization pattern in the node tissues did not differ from that of WT; however, Zn accumulation in the inter-vascular tissues was lower in uppermost node I but higher in the third upper node III compared with the WT. In contrast, Si deposition in the mutants of three nodal Si transporters Lsi2, Lsi3 and Lsi6 showed different patterns, which are consistent with the localization of these transporters. This improved LA-ICP-MS analysis combined with functional characterization of transporters will provide further insight into mineral element distribution mechanisms in rice and other plant species.
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Affiliation(s)
- Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan
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Belykh ES, Maystrenko TA, Velegzhaninov IO. Recent Trends in Enhancing the Resistance of Cultivated Plants to Heavy Metal Stress by Transgenesis and Transcriptional Programming. Mol Biotechnol 2019; 61:725-741. [DOI: 10.1007/s12033-019-00202-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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73
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Wu Y, Li X, Chen D, Han X, Li B, Yang Y, Yang Y. Comparative expression analysis of heavy metal ATPase subfamily genes between Cd-tolerant and Cd-sensitive turnip landraces. PLANT DIVERSITY 2019; 41:275-283. [PMID: 31528787 PMCID: PMC6742492 DOI: 10.1016/j.pld.2019.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/30/2019] [Accepted: 02/25/2019] [Indexed: 05/25/2023]
Abstract
The heavy metal ATPase (HMA) subfamily is mainly involved in heavy metal (HM) tolerance and transport in plants, but an understanding of the definite roles and mechanisms of most HMA members are still limited. In the present study, we identified 14 candidate HMA genes named BrrHMA1-BrrHMA8 from the turnip genome and analyzed the phylogeny, gene structure, chromosome distribution, and conserved domains and motifs of HMAs in turnip (Brassica rapa var. rapa). According to our phylogenetic tree, the BrrHMAs are divided into a Zn/Cd/Co/Pb subclass and Cu/Ag subclass. The BrrHMA members show similar structural characteristics within subclasses. To explore the roles of BrrHMAs in turnip, we compared the gene sequences and expression patterns of the BrrHMA genes between a Cd-tolerant landrace and a Cd-sensitive landrace. Most BrrHMA genes showed similar spatial expression patterns in both Cd-tolerant and Cd-sensitive turnip landraces; some BrrHMA genes, however, were differentially expressed in specific tissue in Cd-tolerant and Cd-sensitive turnip. Specifically, BrrHMA genes in the Zn/Cd/Co/Pb subclass shared the same coding sequence but were differentially expressed in Cd-tolerant and Cd-sensitive turnip landraces under Cd stress. Our findings suggest that the stable expression and up-regulated expression of BrrHMA Zn/Cd/Co/Pb subclass genes under Cd stress may contribute to the higher Cd tolerance of turnip landraces.
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Affiliation(s)
- Yuansheng Wu
- China Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Xiong Li
- China Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Di Chen
- China Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Xi Han
- College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Boqun Li
- China Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yonghong Yang
- College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Yongping Yang
- China Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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74
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Zhou M, Zheng S, Liu R, Lu L, Zhang C, Zhang L, Yant L, Wu Y. The genome-wide impact of cadmium on microRNA and mRNA expression in contrasting Cd responsive wheat genotypes. BMC Genomics 2019; 20:615. [PMID: 31357934 PMCID: PMC6664702 DOI: 10.1186/s12864-019-5939-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 06/26/2019] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Heavy metal ATPases (HMAs) are responsible for Cd translocation and play a primary role in Cd detoxification in various plant species. However, the characteristics of HMAs and the regulatory mechanisms between HMAs and microRNAs in wheat (Triticum aestivum L) remain unknown. RESULTS By comparative microRNA and transcriptome analysis, a total three known and 19 novel differentially expressed microRNAs (DEMs) and 1561 differentially expressed genes (DEGs) were found in L17 after Cd treatment. In H17, by contrast, 12 known and 57 novel DEMs, and only 297 Cd-induced DEGs were found. Functional enrichments of DEMs and DEGs indicate how genotype-specific biological processes responded to Cd stress. Processes found to be involved in microRNAs-associated Cd response include: ubiquitin mediated proteolysis, tyrosine metabolism, and carbon fixation pathways and thiamine metabolism. For the mRNA response, categories including terpenoid backbone biosynthesis and phenylalanine metabolism, and photosynthesis - antenna proteins and ABC transporters were enriched. Moreover, we identified 32 TaHMA genes in wheat. Phylogenetic trees, chromosomal locations, conserved motifs and expression levels in different tissues and roots under Cd stress are presented. Finally, we infer a microRNA-TaHMAs expression network, indicating that miRNAs can regulate TaHMAs. CONCLUSION Our findings suggest that microRNAs play important role in wheat under Cd stress through regulation of targets such as TaHMA2;1. Identification of these targets will be useful for screening and breeding low-Cd accumulation wheat lines.
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Affiliation(s)
- Min Zhou
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 Sichuan China
- University of Chinese Academy of Sciences, Beijing, 100049 China
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2RD UK
| | - Shigang Zheng
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 Sichuan China
| | - Rong Liu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 Sichuan China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Lu Lu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 Sichuan China
| | - Chihong Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 Sichuan China
| | - Lei Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 Sichuan China
| | - Levi Yant
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2RD UK
| | - Yu Wu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 Sichuan China
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75
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Wan H, Du J, He J, Lyu D, Li H. Copper accumulation, subcellular partitioning and physiological and molecular responses in relation to different copper tolerance in apple rootstocks. TREE PHYSIOLOGY 2019; 39:1215-1234. [PMID: 30977826 DOI: 10.1093/treephys/tpz042] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 04/01/2019] [Indexed: 05/15/2023]
Abstract
To unravel the physiological and molecular regulation mechanisms underlying the variation in copper (Cu)accumulation, translocation and tolerance among five apple rootstocks, seedlings were exposed to either basal or excess Cu. Excess Cu suppressed plant biomass and root architecture, which was less pronounced in Malus prunifolia Borkh., indicating its relatively higher Cu tolerance. Among the five apple rootstocks, M. prunifolia exhibited the highest Cu concentration and bio-concentration factor in roots but the lowest translocation factor, indicating its greater ability to immobilize Cu and restrict translocation to the aerial parts. Higher Cu concentration in cell wall fraction but lower Cu proportion in membrane-containing and organelle-rich fractions were found in M. prunifolia. Compared with the other four apple rootstocks under excess Cu conditions, M. prunifolia had a lower increment of hydrogen peroxide in roots and leaves and malondialdehyde in roots, but higher concentrations of carbohydrates and enhanced antioxidants. Transcript levels of genes involved in Cu uptake, transport and detoxification revealed species-specific differences that are probably related to alterations in Cu tolerance. M. prunifolia had relatively higher gene transcript levels including copper transporters 2 (COPT2), COPT6 and zinc/iron-regulated transporter-related protein 2 (ZIP2), which probably took part in Cu uptake, and C-type ATP-binding cassette transporter 2 (ABCC2), copper chaperone for Cu/Zn superoxide dismutase (CCS), Cu/Zn superoxide dismutase 1 (CSD1) and metallothionein 2 (MT2) probably implicated in Cu detoxification, and relatively lower mRNA levels of yellow stripe-like transporter 3 (YSL3) and heavy metal ATPase 5 (HMA5) involved in transport of Cu to aerial parts. These results suggest that M. prunifolia is more tolerant to excess Cu than the other four apple rootstocks under the current experimental conditions, which is probably attributed to more Cu retention in roots, subcellular partitioning, well-coordinated antioxidant defense mechanisms and transcriptional expression of genes involved in Cu uptake, translocation and detoxification.
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Affiliation(s)
- Huixue Wan
- College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning, People's Republic of China
- Key Lab of Fruit Quality Development and Regulation of Liaoning Province, Shenyang, Liaoning, People's Republic of China
| | - Jiayi Du
- College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning, People's Republic of China
- Key Lab of Fruit Quality Development and Regulation of Liaoning Province, Shenyang, Liaoning, People's Republic of China
| | - Jiali He
- College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning, People's Republic of China
- Key Lab of Fruit Quality Development and Regulation of Liaoning Province, Shenyang, Liaoning, People's Republic of China
| | - Deguo Lyu
- College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning, People's Republic of China
- Key Lab of Fruit Quality Development and Regulation of Liaoning Province, Shenyang, Liaoning, People's Republic of China
| | - Huifeng Li
- Institute of Pomology, Shandong Academy of Agricultural Sciences, Tai'an, People's Republic of China
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76
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Cong W, Miao Y, Xu L, Zhang Y, Yuan C, Wang J, Zhuang T, Lin X, Jiang L, Wang N, Ma J, Sanguinet KA, Liu B, Rustgi S, Ou X. Transgenerational memory of gene expression changes induced by heavy metal stress in rice (Oryza sativa L.). BMC PLANT BIOLOGY 2019; 19:282. [PMID: 31248374 PMCID: PMC6598230 DOI: 10.1186/s12870-019-1887-7] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 06/13/2019] [Indexed: 05/22/2023]
Abstract
BACKGROUND Heavy metal toxicity has become a major threat to sustainable crop production worldwide. Thus, considerable interest has been placed on deciphering the mechanisms that allow plants to combat heavy metal stress. Strategies to deal with heavy metals are largely focused on detoxification, transport and/or sequestration. The P1B subfamily of the Heavy Metal-transporting P-type ATPases (HMAs) was shown to play a crucial role in the uptake and translocation of heavy metals in plants. Here, we report the locus-specific expression changes in the rice HMA genes together with several low-copy cellular genes and transposable elements upon the heavy metal treatment and monitored the transgenerational inheritance of the altered expression states. We reveal that plants cope with heavy metal stress by making heritable changes in gene expression and further determined gene-specific responses to heavy metal stress. RESULTS We found most HMA genes were upregulated in response to heavy metal stress, and furthermore found evidence of transgenerational memory via changes in gene regulation even after the removal of heavy metals. To explore whether DNA methylation was also altered in response to the heavy metal stress, we selected a Tos17 retrotransposon for bisulfite sequencing and studied its methylation state across three generations. We found the DNA methylation state of Tos17 was altered in response to the heavy metal stress and showed transgenerational inheritance. CONCLUSIONS Collectively, the present study elucidates heritable changes in gene expression and DNA methylation in rice upon exposure to heavy metal stress and discusses implications of this knowledge in breeding for heavy metal tolerant crops.
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Affiliation(s)
- Weixuan Cong
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Yiling Miao
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Lei Xu
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Yunhong Zhang
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Chunlei Yuan
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Junmeng Wang
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Tingting Zhuang
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Xiuyun Lin
- Jilin Academy of Agricultural Sciences, Changchun, 130033 China
| | - Lili Jiang
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Ningning Wang
- Jilin Agriculture University, Changchun, 130000 China
| | - Jian Ma
- Jilin Agriculture University, Changchun, 130000 China
| | - Karen A. Sanguinet
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164 USA
| | - Bao Liu
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
| | - Sachin Rustgi
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164 USA
- Department of Plant and Environmental Sciences, Clemson University, Pee Dee Research and Education Center, Florence, SC 29506 USA
| | - Xiufang Ou
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun, 130024 China
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Souza Junior JCD, Nogueirol RC, Monteiro FA. Nitrate and ammonium proportion plays a key role in copper phytoextraction, improving the antioxidant defense in Tanzania guinea grass. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 171:823-832. [PMID: 30660976 DOI: 10.1016/j.ecoenv.2019.01.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 01/02/2019] [Accepted: 01/06/2019] [Indexed: 05/22/2023]
Abstract
Various nitrate and ammonium proportions (NO3-/NH4+) in the growth media can increase metal phytoextraction compared to supplying solely NO3-. However, there are no studies showing these effects in plants under copper (Cu) contamination as well as their consequences in plant stress tolerance. The objective was to evaluate the effect of NO3-/NH4+ proportions in Cu phytoextraction by Panicum maximum cv. Tanzania and its consequence in the oxidative stress, photosynthesis, and antioxidant system under Cu stress. The experiment was carried out in a randomized complete block design, by using a 3 × 4 factorial with six replications. Three NO3-/NH4+ proportions (100/0, 70/30, and 50/50) were combined with four Cu rates (0.3, 250, 500, and 1000 µmol L-1) in the nutrient solution. It was found that the largest Cu accumulation in the shoots occurred at the first harvest of the plants supplied with 70/30 NO3-/NH4+ and Cu 1000 µmol L-1. Such plants also displayed high concentrations of proline in the shoots as well as high superoxide dismutase activity in the roots. Malondialdehyde concentration was high in the plant parts at the Cu rate of 1000 µmol L-1. Hence, transpiration rates, stomatal conductance, quantum efficiency of photosystem II, electron transport rate, and net photosynthesis were all low at the Cu rate of 1000 µmol L-1. Catalase, guaiacol peroxidase, ascorbate peroxidase, and glutathione reductase activities in the roots were high when plants were exposed to Cu 1000 µmol L-1. In conclusion, the combination of NO3- with NH4+ increases copper phytoextraction that causes oxidative stress, but also favors the antioxidant system of Tanzania guinea grass in attempt to tolerate such stress.
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Affiliation(s)
- João Cardoso de Souza Junior
- University of São Paulo, "Luiz de Queiroz" College of Agriculture, Soil Science Department, Pádua Dias 11, ZIP Code 13418-900 Piracicaba, São Paulo, Brazil.
| | - Roberta Corrêa Nogueirol
- University of São Paulo, "Luiz de Queiroz" College of Agriculture, Crop Science Department, Pádua Dias 11, ZIP Code 13418-900 Piracicaba, São Paulo, Brazil.
| | - Francisco Antonio Monteiro
- University of São Paulo, "Luiz de Queiroz" College of Agriculture, Soil Science Department, Pádua Dias 11, ZIP Code 13418-900 Piracicaba, São Paulo, Brazil.
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78
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Chou M, Sun Y, Yang J, Wang Y, Li Y, Yuan G, Zhang D, Wang J, Wei G. Comprehensive analysis of phenotype, microstructure and global transcriptional profiling to unravel the effect of excess copper on the symbiosis between nitrogen-fixing bacteria and Medicago lupulina. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 656:1346-1357. [PMID: 30625663 DOI: 10.1016/j.scitotenv.2018.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/01/2018] [Accepted: 12/01/2018] [Indexed: 06/09/2023]
Abstract
Legume-rhizobial symbiosis plays an important role in agriculture and ecological restoration. However, knowledge of the molecular mechanisms, especially the microstructure and global transcriptional profiling, of the symbiosis process under heavy metal contamination is limited. In this study, a heavy metal-tolerant legume, Medicago lupulina, was treated with different concentrations of copper (Cu). The results showed that the early infection process was inhibited and the nodule ultrastructure was changed under 200 mg kg-1 Cu stress. Most infection threads (ITs) were prevented from entering the nodule cells, and few rhizobia were released into the host cells, in which thickening of the plant cell wall and IT wall was observed, demonstrating that rhizobial invasion was inhibited under Cu stress. RNA-seq analysis indicated that a strong shift in gene expression occurred (3257 differentially expressed genes, DEGs). The most pronounced effect was the upregulation of a set of 71 of 73 DEGs for nodule-specific cysteine-rich peptides, which have been shown to control the terminal differentiation of rhizobia in the nodules and to have antimicrobial activity. Various genes for metal transport, chelation binding and antioxidant defence were regulated. In particular, the DEGs for Cu trafficking and detoxification were induced during nodule formation. The DEGs for ethylene (ET) biosynthesis and signalling were also differentially expressed during nodulation, suggesting that the inhibition of nodulation by Cu occurred partially through ET signalling. Furthermore, the genes related to the cell wall were mostly upregulated and most likely involved in cell wall thickening. These findings provide an integrated understanding of the effects of Cu on legume nodule symbiosis at the molecular and phenotypic levels.
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Affiliation(s)
- Minxia Chou
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Yali Sun
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Jieyu Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Yujie Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Yajuan Li
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Guijie Yuan
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Dehui Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Jiamei Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Life Sciences, Northwest A&F University, Yangling 712100, China.
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79
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Wang W, Yamaji N, Ma JF. Molecular Mechanism of Cadmium Accumulation in Rice. CURRENT TOPICS IN ENVIRONMENTAL HEALTH AND PREVENTIVE MEDICINE 2019. [DOI: 10.1007/978-981-13-3630-0_9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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80
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Cevher-Keskin B, Yıldızhan Y, Yüksel B, Dalyan E, Memon AR. Characterization of differentially expressed genes to Cu stress in Brassica nigra by Arabidopsis genome arrays. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:299-311. [PMID: 30397750 DOI: 10.1007/s11356-018-3577-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 10/23/2018] [Indexed: 06/08/2023]
Abstract
Phytoremediation is an efficient and promising cleanup technology to extract or inactivate heavy metals and several organic and inorganic pollutants from soil and water. In this study, different Brassica nigra L. ecotypes, including Diyarbakır, collected from mining areas were exposed to different concentrations of copper and harvested after 72 h of Cu stress for the assessment of phytoremediation capacity. The Diyarbakır ecotype was called as "metallophyte" because of surviving at 500 μM Cu. To better understand Cu stress mechanism, ArabidopsisATH1 genome array was used to compare the gene expression in root and shoot tissues of B. nigra under 25 μM Cu. The response to Cu was much stronger in roots (88 genes showing increased or decreased mRNA levels) than in leaf tissues (24 responding genes). These genes were classified into the metal transport and accumulation-related genes, signal transduction and metabolism-related genes, and transport facilitation genes. Glutathione pathway-related genes (γ-ECS, PC, etc.) mRNAs were identified as differentially expressed in root and shoot tissues. QRT-PCR validation experiments showed that γ-ECS and PC expression was upregulated in the shoot and leaf tissues of the 100 μM Cu-subjected B. nigra-tolerant ecotype. This is the first study showing global expression profiles in response to Cu stress in B. nigra by Arabidopsis genome array. This work presented herein provides a well-illustrated insight into the global gene expression to Cu stress response in plants, and identified genes from microarray data will serve as molecular tools for the phytoremediation applications in the future.
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Affiliation(s)
- Birsen Cevher-Keskin
- The Scientific and Technological Research Council of Turkey (TUBITAK); Marmara Research Center; Genetic Engineering and Biotechnology Institute; Plant Molecular Biology and Genetics Laboratory, 21, 41470, Gebze, Kocaeli, Turkey.
| | - Yasemin Yıldızhan
- The Scientific and Technological Research Council of Turkey (TUBITAK); Marmara Research Center; Genetic Engineering and Biotechnology Institute; Plant Molecular Biology and Genetics Laboratory, 21, 41470, Gebze, Kocaeli, Turkey
| | - Bayram Yüksel
- The Scientific and Technological Research Council of Turkey (TUBITAK); Marmara Research Center; Genetic Engineering and Biotechnology Institute; Plant Molecular Biology and Genetics Laboratory, 21, 41470, Gebze, Kocaeli, Turkey
| | - Eda Dalyan
- Faculty of Science, Department of Botany, Istanbul University, Istanbul, Turkey
| | - Abdul Razaque Memon
- Faculty of Science and Arts, Department of Molecular Biology and Genetics, Uşak University, 1 Eylül Campus, Uşak, Turkey
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81
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Franić M, Galić V. As, Cd, Cr, Cu, Hg: Physiological Implications and Toxicity in Plants. PLANT METALLOMICS AND FUNCTIONAL OMICS 2019:209-251. [DOI: 10.1007/978-3-030-19103-0_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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82
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The Yellow Stripe-Like (YSL) Gene Functions in Internal Copper Transport in Peanut. Genes (Basel) 2018; 9:genes9120635. [PMID: 30558234 PMCID: PMC6316571 DOI: 10.3390/genes9120635] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/20/2018] [Accepted: 12/03/2018] [Indexed: 12/16/2022] Open
Abstract
Copper (Cu) is involved in fundamental biological processes for plant growth and development. However, Cu excess is harmful to plants. Thus, Cu in plant tissues must be tightly regulated. In this study, we found that the peanut Yellow Stripe-Like family gene AhYSL3.1 is involved in Cu transport. Among five AhYSL genes, AhYSL3.1 and AhYSL3.2 were upregulated by Cu deficiency in peanut roots and expressed mainly in young leaves. A yeast complementation assay suggested that the plasma membrane-localized AhYSL3.1 was a Cu-nicotianamine complex transporter. High expression of AhYSL3.1 in tobacco and rice plants with excess Cu resulted in a low concentration of Cu in young leaves. These transgenic plants were resistant to excess Cu. The above results suggest that AhYSL3.1 is responsible for the internal transport of Cu in peanut.
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83
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Zhang C, Lu W, Yang Y, Shen Z, Ma JF, Zheng L. OsYSL16 is Required for Preferential Cu Distribution to Floral Organs in Rice. PLANT & CELL PHYSIOLOGY 2018; 59:2039-2051. [PMID: 29939322 DOI: 10.1093/pcp/pcy124] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/21/2018] [Indexed: 05/21/2023]
Abstract
Deficiency of copper (Cu) causes low fertility in many plant species, but the molecular mechanisms underlying distribution of Cu to the floral organs are poorly understood. Here, we found that a member of yellow-stripe like (YSL) family, YSL16 encoding the Cu-nicotianamine (Cu-NA) transporter, was highly expressed in the rachilla, with less expression in the palea and lemma of rice (Oryza sativa). β-Glucuronidase (GUS) staining of transgenic rice carrying the OsYSL16 promoter-GUS showed that OsYSL16 was mainly expressed in vascular bundles of the rachilla as well as the palea and lemma. Knockout of OsYSL16 resulted in decreased Cu distribution to the stamens, but increased distribution to the palea and lemma. A short-term (24 h) 65Cu labeling experiment confirmed increased Cu concentration of palea and lemma in the mutant. Furthermore, we found that redistribution of Cu from the palea and lemma was impaired in the osysl16 mutant after exposure to Cu-free solution. The osysl16 mutant showed low pollen germination, but this was rescued by addition of Cu in the medium. Our results indicate that OsYSL16 expressed in the vascular bundles of the rachilla is important for preferential distribution of Cu to the stamens, while OsYSL16 in vascular bundles of the palea and lemma is involved in Cu redistribution under Cu-limited conditions in rice.
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Affiliation(s)
- Chang Zhang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Wenhui Lu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yang Yang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, Japan
| | - Luqing Zheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
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84
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Deng F, Yamaji N, Ma JF, Lee S, Jeon J, Martinoia E, Lee Y, Song W. Engineering rice with lower grain arsenic. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:1691-1699. [PMID: 29479780 PMCID: PMC6131421 DOI: 10.1111/pbi.12905] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 12/19/2017] [Accepted: 02/14/2018] [Indexed: 05/09/2023]
Abstract
Arsenic (As) is a poisonous element that causes severe skin lesions and cancer in humans. Rice (Oryza sativa L.) is a major dietary source of As in humans who consume this cereal as a staple food. We hypothesized that increasing As vacuolar sequestration would inhibit its translocation into the grain and reduce the amount of As entering the food chain. We developed transgenic rice plants expressing two different vacuolar As sequestration genes, ScYCF1 and OsABCC1, under the control of the RCc3 promoter in the root cortical and internode phloem cells, along with a bacterial γ-glutamylcysteine synthetase driven by the maize UBI promoter. The transgenic rice plants exhibited reduced root-to-shoot and internode-to-grain As translocation, resulting in a 70% reduction in As accumulation in the brown rice without jeopardizing agronomic traits. This technology could be used to reduce As intake, particularly in populations of South East Asia suffering from As toxicity and thereby improve human health.
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Affiliation(s)
- Fenglin Deng
- Department of Integrative Bioscience and BiotechnologyPohang University of Science and TechnologyPohangKorea
| | - Naoki Yamaji
- Institute of Plant Science and ResourcesOkayama UniversityKurashikiJapan
| | - Jian Feng Ma
- Institute of Plant Science and ResourcesOkayama UniversityKurashikiJapan
| | - Sang‐Kyu Lee
- Graduate School of Biotechnology & Crop Biotech InstituteKyung Hee UniversityYonginKorea
| | - Jong‐Seong Jeon
- Graduate School of Biotechnology & Crop Biotech InstituteKyung Hee UniversityYonginKorea
| | | | - Youngsook Lee
- Department of Integrative Bioscience and BiotechnologyPohang University of Science and TechnologyPohangKorea
| | - Won‐Yong Song
- Department of Integrative Bioscience and BiotechnologyPohang University of Science and TechnologyPohangKorea
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85
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Zhang Y, Chen K, Zhao FJ, Sun C, Jin C, Shi Y, Sun Y, Li Y, Yang M, Jing X, Luo J, Lian X. OsATX1 Interacts with Heavy Metal P1B-Type ATPases and Affects Copper Transport and Distribution. PLANT PHYSIOLOGY 2018; 178:329-344. [PMID: 30002257 PMCID: PMC6130040 DOI: 10.1104/pp.18.00425] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 07/01/2018] [Indexed: 05/03/2023]
Abstract
Copper (Cu) is an essential micronutrient for plant growth. However, the molecular mechanisms underlying Cu trafficking and distribution to different organs in rice (Oryza sativa) are poorly understood. Here, we report the function and role of Antioxidant Protein1 (OsATX1), a Cu chaperone in rice. Knocking out OsATX1 resulted in increased Cu concentrations in roots, whereas OsATX1 overexpression reduced root Cu concentrations but increased Cu accumulation in the shoots. At the reproductive stage, the concentrations of Cu in developing tissues, including panicles, upper nodes and internodes, younger leaf blades, and leaf sheaths of the main tiller, were increased significantly in OsATX1-overexpressing plants and decreased in osatx1 mutants compared with the wild type. The osatx1 mutants also showed a higher Cu concentration in older leaves. Yeast two-hybrid and bimolecular fluorescence complementation assays showed that OsATX1 interacts with the rice heavy metal P1B-ATPases HMA4, HMA5, HMA6, and HMA9. These results suggest that OsATX1 may function to deliver Cu to heavy metal P1B-ATPases for Cu trafficking and distribution in order to maintain Cu homeostasis in different rice tissues. In addition, heterologous expression of OsATX1 in the yeast (Saccharomyces cerevisiae) cadmium-sensitive mutant Δycf1 increased the tolerance to Cu and cadmium by decreasing their respective concentrations in the transformed yeast cells. Taken together, our results indicate that OsATX1 plays an important role in facilitating root-to-shoot Cu translocation and the redistribution of Cu from old leaves to developing tissues and seeds in rice.
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Affiliation(s)
- Yuanyuan Zhang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Kai Chen
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Fang-Jie Zhao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Cuiju Sun
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Cheng Jin
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Yuheng Shi
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Yangyang Sun
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Yuan Li
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Meng Yang
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Xinyu Jing
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Jie Luo
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
| | - Xingming Lian
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China
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86
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Xu ZM, Tan XQ, Mei XQ, Li QS, Zhou C, Wang LL, Ye HJ, Yang P. Low-Cd tomato cultivars (Solanum lycopersicum L.) screened in non-saline soils also accumulated low Cd, Zn, and Cu in heavy metal-polluted saline soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:27439-27450. [PMID: 30039491 DOI: 10.1007/s11356-018-2776-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
Many reclaimed tidal flat soils feature high salinity and heavy metal (HM) accumulation. Consumption of vegetables cultivated in this type of cropland may cause health risks. Low-Cd tomato cultivars (Solanum lycopersicum L.) were identified in non-saline soil in our previous studies (Tan et al. 2014). However, further research should determine whether these low-Cd cultivars will maintain in the repeatability and stability in saline soil and whether they have low accumulation abilities for accompanying metals (such as Zn and Cu). A soil-pot trial was implemented to measure Cd, Zn, and Cu concentrations in low- and high-Cd cultivars of both common and cherry-type tomatoes grown on HM-polluted reclaimed tidal flat saline soil. Then, cultivar differences in dissolution of Cd, Zn, and Cu in soil and their uptake and redistribution in plants were analyzed. Results showed that the cherry type accumulated more Cd, Zn, and Cu than the common type. Low-Cd cultivars of both types in saline soil accumulated low concentrations of Cd, Zn, and Cu in fruits. Low HM accumulation in fruits is partly attributed to a low root/shoot (R/S) biomass ratio. Low amounts of soil HMs were dissolved because of the low level of rhizosphere organic compounds, which possibly decreased HM uptake by the roots. Low-Cd cultivars of both tomato types had a higher ability to retain HMs in the roots than their high-Cd cultivars. These findings may provide a scientific guidance for the safe cultivation of HM-polluted saline soils.
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Affiliation(s)
- Zhi-Min Xu
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Xiao-Qi Tan
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Xiu-Qin Mei
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Qu-Sheng Li
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China.
| | - Chu Zhou
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Li-Li Wang
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Han-Jie Ye
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Ping Yang
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
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87
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Chen W, Si GY, Zhao G, Abdullah M, Guo N, Li DH, Sun X, Cai YP, Lin Y, Gao JS. Genomic Comparison of the P-ATPase Gene Family in Four Cotton Species and Their Expression Patterns in Gossypium hirsutum. Molecules 2018; 23:molecules23051092. [PMID: 29734726 PMCID: PMC6102550 DOI: 10.3390/molecules23051092] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/03/2018] [Accepted: 05/04/2018] [Indexed: 11/21/2022] Open
Abstract
Plant P-type H+-ATPase (P-ATPase) is a membrane protein existing in the plasma membrane that plays an important role in the transmembrane transport of plant cells. To understand the variety and quantity of P-ATPase proteins in different cotton species, we combined four databases from two diploid cotton species (Gossypium raimondii and G. arboreum) and two tetraploid cotton species (G. hirsutum and G. barbadense) to screen the P-ATPase gene family and resolved the evolutionary relationships between the former cotton species. We identified 53, 51, 99 and 98 P-ATPase genes from G. arboretum, G. raimondii, G. barbadense and G. hirsutum, respectively. The structural and phylogenetic analyses revealed that the gene structure was consistent between P-ATPase genes, with a close evolutionary relationship. The expression analysis of P-ATPase genes showed that many P-ATPase genes were highly expressed in various tissues and at different fiber developmental stages in G. hirsutum, suggesting that they have potential functions during growth and fiber development in cotton.
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Affiliation(s)
- Wen Chen
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Guo-Yang Si
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Gang Zhao
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Muhammad Abdullah
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Ning Guo
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Da-Hui Li
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Xu Sun
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Yong-Ping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Yi Lin
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
| | - Jun-Shan Gao
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
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88
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Feng J, Jia W, Lv S, Bao H, Miao F, Zhang X, Wang J, Li J, Li D, Zhu C, Li S, Li Y. Comparative transcriptome combined with morpho-physiological analyses revealed key factors for differential cadmium accumulation in two contrasting sweet sorghum genotypes. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:558-571. [PMID: 28703450 PMCID: PMC5787832 DOI: 10.1111/pbi.12795] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 05/22/2017] [Accepted: 07/10/2017] [Indexed: 05/19/2023]
Abstract
Cadmium (Cd) is a widespread soil contaminant threatening human health. As an ideal energy plant, sweet sorghum (Sorghum bicolor (L.) Moench) has great potential in phytoremediation of Cd-polluted soils, although the molecular mechanisms are largely unknown. In this study, key factors responsible for differential Cd accumulation between two contrasting sweet sorghum genotypes (high-Cd accumulation one H18, and low-Cd accumulation one L69) were investigated. H18 exhibited a much higher ability of Cd uptake and translocation than L69. Furthermore, Cd uptake through symplasmic pathway and Cd concentrations in xylem sap were both higher in H18 than those in L69. Root anatomy observation found the endodermal apoplasmic barriers were much stronger in L69, which may restrict the Cd loading into xylem. The molecular mechanisms underlying these morpho-physiological traits were further dissected by comparative transcriptome analysis. Many genes involved in cell wall modification and heavy metal transport were found to be Cd-responsive DEGs and/or DEGs between these two genotypes. KEGG pathway analysis found phenylpropanoid biosynthesis pathway was over-represented, indicating this pathway may play important roles in differential Cd accumulation between two genotypes. Based on these results, a schematic representation of main processes involved in differential Cd uptake and translocation in H18 and L69 is proposed, which suggests that higher Cd accumulation in H18 depends on a multilevel coordination of efficient Cd uptake and transport, including efficient root uptake and xylem loading, less root cell wall binding, and weaker endodermal apoplasmic barriers.
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Affiliation(s)
- Juanjuan Feng
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Weitao Jia
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Sulian Lv
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Hexigeduleng Bao
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
- College of Life SciencesChina Jiliang UniversityHangzhouChina
| | - Fangfang Miao
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Xuan Zhang
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Jinhui Wang
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Jihong Li
- Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijingChina
- Beijing Engineering Research Center for BiofuelsTsinghua UniversityBeijingChina
| | - Dongsheng Li
- Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijingChina
- Beijing Engineering Research Center for BiofuelsTsinghua UniversityBeijingChina
| | - Cheng Zhu
- College of Life SciencesChina Jiliang UniversityHangzhouChina
| | - Shizhong Li
- Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijingChina
- Beijing Engineering Research Center for BiofuelsTsinghua UniversityBeijingChina
| | - Yinxin Li
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
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89
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Meng L, Wang B, Zhao X, Ponce K, Qian Q, Ye G. Association Mapping of Ferrous, Zinc, and Aluminum Tolerance at the Seedling Stage in Indica Rice using MAGIC Populations. FRONTIERS IN PLANT SCIENCE 2017; 8:1822. [PMID: 29123537 PMCID: PMC5662918 DOI: 10.3389/fpls.2017.01822] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 10/09/2017] [Indexed: 05/23/2023]
Abstract
Excessive amounts of metal are toxic and severely affect plant growth and development. Understanding the genetic control of metal tolerance is crucial to improve rice resistance to Fe, Zn, and Al toxicity. The multi-parent advanced generation inter-cross (MAGIC) populations were genotyped using a 55 K rice SNP array and screened at the seedling stage for Fe, Zn, and Al toxicity using a hydroponics system. Association analysis was conducted by implementing a mixed linear model (MLM) for each of the five MAGIC populations double cross DC1 (founders were SAGC-08, HHZ5-SAL9-Y3-Y1, BP1976B-2-3-7-TB-1-1, PR33282-B-8-1-1-1-1-1), double cross DC2 (founders of double cross were FFZ1, CT 16658-5-2-2SR-2-3-6MP, IR 68, IR 02A127), eight parents population 8way (founders were SAGC-08, HHZ5-SAL9-Y3-Y1, BP1976B-2-3-7-TB-1-1, PR33282-B-8-1-1-1-1-1, FFZ1, CT 16658-5-2-2SR-2-3-6MP, IR 68, IR 02A127), DC12 (DC1+DC2) and rice multi-parent recombinant inbred line population RMPRIL (DC1+DC2+8way). A total of 21, 30, and 21 QTL were identified for Fe, Zn, and Al toxicity tolerance, respectively. For multi tolerance (MT) as Fe, Zn, and Al tolerance-related traits, three genomic regions, MT1.1 (chr.1: 35.4-36.3 Mb), MT1.2 (chr.1: 35.4-36.3 Mb), and MT3.2 (chr.3: 35.4-36.2 Mb) harbored QTL. The chromosomal regions MT2.1 (chr.2: 2.4-2.8 Mb), MT2.2 (chr.2: 24.5-25.8 Mb), MT4 (chr.4: 1.2 Mb Mb), MT8.1 (chr.8: 0.7-0.9 Mb), and MT8.2 (chr.8: 2.2-2.4 Mb) harbored QTL for Fe and Zn tolerance, while MT2.3 (chr.2: 30.5-31.6 Mb), MT3.1 (chr.3: 12.5-12.8 Mb), and MT6 (chr.6: 2.0-3.0 Mb) possessed QTL for Al and Zn tolerance. The chromosomal region MT9.1 (chr.9: 14.2-14.7 Mb) possessed QTL for Fe and Al tolerance. A total of 11 QTL were detected across different MAGIC populations and 12 clustered regions were detected under different metal conditions, suggesting that these genomic regions might constitute valuable regions for further marker-assisted selection (MAS) in breeding programs.
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Affiliation(s)
- Lijun Meng
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
- Rice Breeding Platform, International Rice Research Institute, Metro Manila, Philippines
| | - Baoxiang Wang
- Lianyungang Institute of Agricultural Sciences in Jiangsu Xuhuai Region, Jiangsu Academy of Agricultural Sciences, Lianyungang, China
| | - Xiangqian Zhao
- Rice Breeding Platform, International Rice Research Institute, Metro Manila, Philippines
- Institute of Crop Science and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Zhejiang, China
| | - Kimberly Ponce
- Rice Breeding Platform, International Rice Research Institute, Metro Manila, Philippines
| | - Qian Qian
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Guoyou Ye
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
- Rice Breeding Platform, International Rice Research Institute, Metro Manila, Philippines
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90
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Yamaji N, Ma JF. Node-controlled allocation of mineral elements in Poaceae. CURRENT OPINION IN PLANT BIOLOGY 2017; 39:18-24. [PMID: 28558362 DOI: 10.1016/j.pbi.2017.05.002] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 05/01/2017] [Accepted: 05/07/2017] [Indexed: 05/21/2023]
Abstract
Mineral elements taken up by the roots will be delivered to different organs and tissues depending on their requirements. In Poaceae, this selective distribution is mainly mediated in the nodes, which have highly developed and fully organized vascular systems. Inter-vascular transfer of mineral elements from enlarged vascular bundles to diffuse vascular bundles is required for their preferential distribution to developing tissues and reproductive organs. A number of transporters involved in this inter-vascular transfer processes have been identified mainly in rice. They are localized at the different cell layers and form an efficient machinery within the node. Furthermore, some these transporters show rapid response to the environmental changes of mineral elements at the protein level. In addition to the node-based transporters, distinct nodal structures including enlarged xylem area, folded plasma membrane of xylem transfer cells and presence of an apoplastic barrier are also required for the efficient inter-vascular transfer. Manipulation of node-based transporters will provide a novel breeding target to improve nutrient use efficiency, productivity, nutritional value and safety in cereal crops.
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Affiliation(s)
- Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki 710-0046, Japan
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki 710-0046, Japan.
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91
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A heavy metal P-type ATPase OsHMA4 prevents copper accumulation in rice grain. Nat Commun 2016; 7:12138. [PMID: 27387148 PMCID: PMC4941113 DOI: 10.1038/ncomms12138] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 06/03/2016] [Indexed: 01/10/2023] Open
Abstract
Rice is a major source of calories and mineral nutrients for over half the world's human population. However, little is known in rice about the genetic basis of variation in accumulation of copper (Cu), an essential but potentially toxic nutrient. Here we identify OsHMA4 as the likely causal gene of a quantitative trait locus controlling Cu accumulation in rice grain. We provide evidence that OsHMA4 functions to sequester Cu into root vacuoles, limiting Cu accumulation in the grain. The difference in grain Cu accumulation is most likely attributed to a single amino acid substitution that leads to different OsHMA4 transport activity. The allele associated with low grain Cu was found in 67 of the 1,367 rice accessions investigated. Identification of natural allelic variation in OsHMA4 may facilitate the development of rice varieties with grain Cu concentrations tuned to both the concentration of Cu in the soil and dietary needs. Copper (Cu) is an essential mineral nutrient but high concentrations in rice grain can cause toxicity. Here the authors provide evidence that natural variation in rice grain Cu concentration is caused by altered sequestration of Cu into root vacuoles due to a single amino acid substitution in the OsHMA4 transporter.
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92
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Printz B, Lutts S, Hausman JF, Sergeant K. Copper Trafficking in Plants and Its Implication on Cell Wall Dynamics. FRONTIERS IN PLANT SCIENCE 2016; 7:601. [PMID: 27200069 PMCID: PMC4859090 DOI: 10.3389/fpls.2016.00601] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 04/18/2016] [Indexed: 05/20/2023]
Abstract
In plants, copper (Cu) acts as essential cofactor of numerous proteins. While the definitive number of these so-called cuproproteins is unknown, they perform central functions in plant cells. As micronutrient, a minimal amount of Cu is needed to ensure cellular functions. However, Cu excess may exert in contrast detrimental effects on plant primary production and even survival. Therefore it is essential for a plant to have a strictly controlled Cu homeostasis, an equilibrium that is both tissue and developmentally influenced. In the current review an overview is presented on the different stages of Cu transport from the soil into the plant and throughout the different plant tissues. Special emphasis is on the Cu-dependent responses mediated by the SPL7 transcription factor, and the crosstalk between this transcriptional regulation and microRNA-mediated suppression of translation of seemingly non-essential cuproproteins. Since Cu is an essential player in electron transport, we also review the recent insights into the molecular mechanisms controlling chloroplastic and mitochondrial Cu transport and homeostasis. We finally highlight the involvement of numerous Cu-proteins and Cu-dependent activities in the properties of one of the major Cu-accumulation sites in plants: the cell wall.
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Affiliation(s)
- Bruno Printz
- Environmental Research and Innovation Department, Luxembourg Institute of Science and TechnologyEsch-sur-Alzette, Luxembourg
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute Agronomy, Université catholique de LouvainLouvain-la-Neuve, Belgium
| | - Stanley Lutts
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute Agronomy, Université catholique de LouvainLouvain-la-Neuve, Belgium
| | - Jean-Francois Hausman
- Environmental Research and Innovation Department, Luxembourg Institute of Science and TechnologyEsch-sur-Alzette, Luxembourg
| | - Kjell Sergeant
- Environmental Research and Innovation Department, Luxembourg Institute of Science and TechnologyEsch-sur-Alzette, Luxembourg
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93
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Printz B, Guerriero G, Sergeant K, Audinot JN, Guignard C, Renaut J, Lutts S, Hausman JF. Combining -Omics to Unravel the Impact of Copper Nutrition on Alfalfa (Medicago sativa) Stem Metabolism. PLANT & CELL PHYSIOLOGY 2016; 57:407-22. [PMID: 26865661 PMCID: PMC4771972 DOI: 10.1093/pcp/pcw001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 12/31/2015] [Indexed: 05/21/2023]
Abstract
Copper can be found in the environment at concentrations ranging from a shortage up to the threshold of toxicity for plants, with optimal growth conditions situated in between. The plant stem plays a central role in transferring and distributing minerals, water and other solutes throughout the plant. In this study, alfalfa is exposed to different levels of copper availability, from deficiency to slight excess, and the impact on the metabolism of the stem is assessed by a non-targeted proteomics study and by the expression analysis of key genes controlling plant stem development. Under copper deficiency, the plant stem accumulates specific copper chaperones, the expression of genes involved in stem development is decreased and the concentrations of zinc and molybdenum are increased in comparison with the optimum copper level. At the optimal copper level, the expression of cell wall-related genes increases and proteins playing a role in cell wall deposition and in methionine metabolism accumulate, whereas copper excess imposes a reduction in the concentration of iron in the stem and a reduced abundance of ferritins. Secondary ion mass spectrometry (SIMS) analysis suggests a role for the apoplasm as a copper storage site in the case of copper toxicity.
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Affiliation(s)
- Bruno Printz
- Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN) Department, Esch/Alzette, Luxembourg Université Catholique de Louvain, Earth and Life Institute Agronomy (ELI-A), Groupe de Recherche en Physiologie Végétale (GRPV), Louvain-la-Neuve, Belgium
| | - Gea Guerriero
- Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN) Department, Esch/Alzette, Luxembourg
| | - Kjell Sergeant
- Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN) Department, Esch/Alzette, Luxembourg
| | - Jean-Nicolas Audinot
- Luxembourg Institute of Science and Technology (LIST), Materials Research and Technology (MRT) Department, Esch/Alzette, Luxembourg
| | - Cédric Guignard
- Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN) Department, Esch/Alzette, Luxembourg
| | - Jenny Renaut
- Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN) Department, Esch/Alzette, Luxembourg
| | - Stanley Lutts
- Université Catholique de Louvain, Earth and Life Institute Agronomy (ELI-A), Groupe de Recherche en Physiologie Végétale (GRPV), Louvain-la-Neuve, Belgium
| | - Jean-Francois Hausman
- Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN) Department, Esch/Alzette, Luxembourg
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94
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Li D, Xu X, Hu X, Liu Q, Wang Z, Zhang H, Wang H, Wei M, Wang H, Liu H, Li C. Genome-Wide Analysis and Heavy Metal-Induced Expression Profiling of the HMA Gene Family in Populus trichocarpa. FRONTIERS IN PLANT SCIENCE 2015; 6:1149. [PMID: 26779188 DOI: 10.1007/s11104-018-3637-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 12/03/2015] [Indexed: 05/25/2023]
Abstract
The heavy metal ATPase (HMA) family plays an important role in transition metal transport in plants. However, this gene family has not been extensively studied in Populus trichocarpa. We identified 17 HMA genes in P. trichocarpa (PtHMAs), of which PtHMA1-PtHMA4 belonged to the zinc (Zn)/cobalt (Co)/cadmium (Cd)/lead (Pb) subgroup, and PtHMA5-PtHMA8 were members of the copper (Cu)/silver (Ag) subgroup. Most of the genes were localized to chromosomes I and III. Gene structure, gene chromosomal location, and synteny analyses of PtHMAs indicated that tandem and segmental duplications likely contributed to the expansion and evolution of the PtHMAs. Most of the HMA genes contained abiotic stress-related cis-elements. Tissue-specific expression of PtHMA genes showed that PtHMA1 and PtHMA4 had relatively high expression levels in the leaves, whereas Cu/Ag subgroup (PtHMA5.1- PtHMA8) genes were upregulated in the roots. High concentrations of Cu, Ag, Zn, Cd, Co, Pb, and Mn differentially regulated the expression of PtHMAs in various tissues. The preliminary results of the present study generated basic information on the HMA family of Populus that may serve as foundation for future functional studies.
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Affiliation(s)
- Dandan Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Xuemei Xu
- Library of Northeast Forestry University Harbin, China
| | - Xiaoqing Hu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Quangang Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Zhanchao Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Haizhen Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Han Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Ming Wei
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Hanzeng Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Haimei Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
| | - Chenghao Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University Harbin, China
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95
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Deciphering Mineral Homeostasis in Barley Seed Transfer Cells at Transcriptional Level. PLoS One 2015; 10:e0141398. [PMID: 26536247 PMCID: PMC4633283 DOI: 10.1371/journal.pone.0141398] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 10/06/2015] [Indexed: 12/13/2022] Open
Abstract
In addition to the micronutrient inadequacy of staple crops for optimal human nutrition, a global downtrend in crop-quality has emerged from intensive breeding for yield. This trend will be aggravated by elevated levels of the greenhouse gas carbon dioxide. Therefore, crop biofortification is inevitable to ensure a sustainable supply of minerals to the large part of human population who is dietary dependent on staple crops. This requires a thorough understanding of plant-mineral interactions due to the complexity of mineral homeostasis. Employing RNA sequencing, we here communicate transfer cell specific effects of excess iron and zinc during grain filling in our model crop plant barley. Responding to alterations in mineral contents, we found a long range of different genes and transcripts. Among them, it is worth to highlight the auxin and ethylene signaling factors Arfs, Abcbs, Cand1, Hps4, Hac1, Ecr1, and Ctr1, diurnal fluctuation components Sdg2, Imb1, Lip1, and PhyC, retroelements, sulfur homeostasis components Amp1, Hmt3, Eil3, and Vip1, mineral trafficking components Med16, Cnnm4, Aha2, Clpc1, and Pcbps, and vacuole organization factors Ymr155W, RabG3F, Vps4, and Cbl3. Our analysis introduces new interactors and signifies a broad spectrum of regulatory levels from chromatin remodeling to intracellular protein sorting mechanisms active in the plant mineral homeostasis. The results highlight the importance of storage proteins in metal ion toxicity-resistance and chelation. Interestingly, the protein sorting and recycling factors Exoc7, Cdc1, Sec23A, and Rab11A contributed to the response as well as the polar distributors of metal-transporters ensuring the directional flow of minerals. Alternative isoform switching was found important for plant adaptation and occurred among transcripts coding for identical proteins as well as transcripts coding for protein isoforms. We also identified differences in the alternative-isoform preference between the treatments, indicating metal-affinity shifts among isoforms of metal transporters. Most important, we found the zinc treatment to impair both photosynthesis and respiration. A wide range of transcriptional changes including stress-related genes and negative feedback loops emphasize the importance to withhold mineral contents below certain cellular levels which otherwise might lead to agronomical impeding side-effects. By illustrating new mechanisms, genes, and transcripts, this report provides a solid platform towards understanding the complex network of plant mineral homeostasis.
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96
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Migocka M. Copper-transporting ATPases: The evolutionarily conserved machineries for balancing copper in living systems. IUBMB Life 2015; 67:737-45. [PMID: 26422816 DOI: 10.1002/iub.1437] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Accepted: 09/14/2015] [Indexed: 12/29/2022]
Abstract
Copper ATPases (Cu-ATPases) are ubiquitous transmembrane proteins using energy from ATP to transport copper across different biological membranes of prokaryotic and eukaryotic cells. As they belong to the P-ATPase family, Cu-ATPases contain a characteristic catalytic domain with an evolutionarily conserved aspartate residue phosphorylated by ATP to form a phosphoenzyme intermediate, as well as transmembrane helices containing a cation-binding cysteine-proline-cysteine/histidine/serine (CPx) motif for catalytic activation and cation translocation. In addition, most Cu-ATPases possess the N-terminal Cu-binding CxxC motif required for regulation of enzyme activity. In cells, the Cu-ATPases receive copper from soluble chaperones and maintain intracellular copper homeostasis by efflux of copper from the cell or transport of the metal into the intracellular compartments. In addition, copper pumps play an essential role in cuproprotein biosynthesis by the uptake of copper into the cell or delivery of the metal into the chloroplasts and thylakoid lumen or into the lumen of the secretory pathway, where the metal ion is incorporated into copper-dependent enzymes. In the recent years, significant progress has been made toward understanding the function and regulation of Cu-transporting ATPases in archaea, bacteria, yeast, humans, and plants, providing new insights into the specific physiological roles of these essential proteins in various organisms and revealing some conservative regulatory mechanisms of Cu-ATPase activity. In this review, the structural, biochemical, and functional properties of Cu-ATPases from phylogenetically different organisms are summarized and discussed, with particular attention given to the recent insights into the molecular biology of copper pumps in plants.
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Affiliation(s)
- Magdalena Migocka
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wroclaw, Wroclaw, Poland
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97
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Orchestration of three transporters and distinct vascular structures in node for intervascular transfer of silicon in rice. Proc Natl Acad Sci U S A 2015; 112:11401-6. [PMID: 26283388 DOI: 10.1073/pnas.1508987112] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Requirement of mineral elements in different plant tissues is not often consistent with their transpiration rate; therefore, plants have developed systems for preferential distribution of mineral elements to the developing tissues with low transpiration. Here we took silicon (Si) as an example and revealed an efficient system for preferential distribution of Si in the node of rice (Oryza sativa). Rice is able to accumulate more than 10% Si of the dry weight in the husk, which is required for protecting the grains from water loss and pathogen infection. However, it has been unknown for a long time how this hyperaccumulation is achieved. We found that three transporters (Lsi2, Lsi3, and Lsi6) located at the node are involved in the intervascular transfer, which is required for the preferential distribution of Si. Lsi2 was polarly localized to the bundle sheath cell layer around the enlarged vascular bundles, which is next to the xylem transfer cell layer where Lsi6 is localized. Lsi3 was located in the parenchyma tissues between enlarged vascular bundles and diffuse vascular bundles. Similar to Lsi6, knockout of Lsi2 and Lsi3 also resulted in decreased distribution of Si to the panicles but increased Si to the flag leaf. Furthermore, we constructed a mathematical model for Si distribution and revealed that in addition to cooperation of three transporters, an apoplastic barrier localized at the bundle sheath cells and development of the enlarged vascular bundles in node are also required for the hyperaccumulation of Si in rice husk.
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98
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Migocka M, Posyniak E, Maciaszczyk-Dziubinska E, Papierniak A, Kosieradzaka A. Functional and Biochemical Characterization of Cucumber Genes Encoding Two Copper ATPases CsHMA5.1 and CsHMA5.2. J Biol Chem 2015; 290:15717-15729. [PMID: 25963145 PMCID: PMC4505482 DOI: 10.1074/jbc.m114.618355] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 04/29/2015] [Indexed: 11/06/2022] Open
Abstract
Plant copper P1B-type ATPases appear to be crucial for maintaining copper homeostasis within plant cells, but until now they have been studied mostly in model plant systems. Here, we present the molecular and biochemical characterization of two cucumber copper ATPases, CsHMA5.1 and CsHMA5.2, indicating a different function for HMA5-like proteins in different plants. When expressed in yeast, CsHMA5.1 and CsHMA5.2 localize to the vacuolar membrane and are activated by monovalent copper or silver ions and cysteine, showing different affinities to Cu(+) (Km ∼1 or 0.5 μM, respectively) and similar affinity to Ag(+) (Km ∼2.5 μM). Both proteins restore the growth of yeast mutants sensitive to copper excess and silver through intracellular copper sequestration, indicating that they contribute to copper and silver detoxification. Immunoblotting with specific antibodies revealed the presence of CsHMA5.1 and CsHMA5.2 in the tonoplast of cucumber cells. Interestingly, the root-specific CsHMA5.1 was not affected by copper stress, whereas the widely expressed CsHMA5.2 was up-regulated or down-regulated in roots upon copper excess or deficiency, respectively. The copper-induced increase in tonoplast CsHMA5.2 is consistent with the increased activity of ATP-dependent copper transport into tonoplast vesicles isolated from roots of plants grown under copper excess. These data identify CsHMA5.1 and CsHMA5.2 as high affinity Cu(+) transporters and suggest that CsHMA5.2 is responsible for the increased sequestration of copper in vacuoles of cucumber root cells under copper excess.
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Affiliation(s)
- Magdalena Migocka
- Institute of Experimental Biology, Department of Plant Molecular Physiology, Kanonia 6/8, 50-328 Wroclaw, Poland.
| | - Ewelina Posyniak
- Institute of Experimental Biology, Department of Plant Molecular Physiology, Kanonia 6/8, 50-328 Wroclaw, Poland
| | - Ewa Maciaszczyk-Dziubinska
- Institute of Experimental Biology, Department of Genetics and Cell Physiology, Kanonia 6/8, 50-328 Wroclaw, Poland
| | - Anna Papierniak
- Institute of Experimental Biology, Department of Plant Molecular Physiology, Kanonia 6/8, 50-328 Wroclaw, Poland
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99
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Migocka M, Papierniak A, Maciaszczyk-Dziubinska E, Posyniak E, Kosieradzka A. Molecular and biochemical properties of two P1B2-ATPases, CsHMA3 and CsHMA4, from cucumber. PLANT, CELL & ENVIRONMENT 2015; 38:1127-41. [PMID: 25210955 DOI: 10.1111/pce.12447] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/27/2014] [Accepted: 08/29/2014] [Indexed: 05/18/2023]
Abstract
P1B-ATPases (heavy metal ATPases, HMAs) constitute a multigenic subfamily of P-ATPases involved in the transport of monovalent and divalent heavy metals in plant cells. Here, we present the organization of genes encoding the HMA family in the cucumber genome and report the function and biochemical properties of two cucumber proteins homologous to the HMA2-4-like plant HMAs. Eight genes encoding putative P1B -ATPases were identified in the cucumber genome. Among them, CsHMA3 was predominantly expressed in roots and up-regulated by Pb, Zn and Cd excess, whereas the CsHMA4 transcript was most abundant in roots and flowers of cucumber plants, and elevated under Pb and Zn excess. Expression of CsHMA3 in Saccharomyces cerevisiae enhanced yeast tolerance to Cd and Pb, whereas CsHMA4 conferred increased resistance of yeast cells to Cd and Zn. Immunostaining with specific antibodies raised against cucumber proteins revealed tonoplast localization of CsHMA3 and plasma membrane localization of CsHMA4 in cucumber root cells. Kinetic studies of CsHMA3 and CsHMA4 in yeast membranes indicated differing heavy metal cation affinities of these two proteins. Altogether, the results suggest an important role of CsHMA3 and CsHMA4 in Cd and Pb detoxification and Zn homeostasis in cucumber cells.
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Affiliation(s)
- Magdalena Migocka
- Department of Plant Molecular Physiology, Institute of Experimental Biology, University of Wroclaw Kanonia 6/8, Wroclaw, 50-328, Poland
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100
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Jin T, Chen J, Zhu L, Zhao Y, Guo J, Huang Y. Comparative mapping combined with homology-based cloning of the rice genome reveals candidate genes for grain zinc and iron concentration in maize. BMC Genet 2015; 16:17. [PMID: 25888360 PMCID: PMC4377022 DOI: 10.1186/s12863-015-0176-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 01/29/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Grain zinc and iron concentration is a complex trait that is controlled by quantitative trait loci (QTL) and is important for maintaining body health. Despite the substantial effort that has been put into identifying QTL for grain zinc and iron concentration, the integration of independent QTL is useful for understanding the genetic foundation of traits. The number of QTL for grain zinc and iron concentration is relatively low in a single species. Therefore, combined analysis of different genomes may help overcome this challenge. RESULTS As a continuation of our work on maize, meta-analysis of QTL for grain zinc and iron concentration in rice was performed to identify meta-QTL (MQTL). Based on MQTL in rice and maize, comparative mapping combined with homology-based cloning was performed to identify candidate genes for grain zinc and iron concentration in maize. In total, 22 MQTL in rice, 4 syntenic MQTL-related regions, and 3 MQTL-containing candidate genes in maize (ortho-mMQTL) were detected. Two maize orthologs of rice, GRMZM2G366919 and GRMZM2G178190, were characterized as natural resistance-associated macrophage protein (NRAMP) genes and considered to be candidate genes. Phylogenetic analysis of NRAMP genes among maize, rice, and Arabidopsis thaliana further demonstrated that they are likely responsible for the natural variation of maize grain zinc and iron concentration. CONCLUSIONS Syntenic MQTL-related regions and ortho-mMQTL are prime areas for future investigation as well as for marker-assisted selection breeding programs. Furthermore, the combined method using the rice genome that was used in this study can shed light on other species and help direct future quantitative trait research. In conclusion, these results help elucidate the molecular mechanism that underlies grain zinc and iron concentration in maize.
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Affiliation(s)
- Tiantian Jin
- Hebei Branch of Chinese National Maize Improvement Center, Agricultural University of Hebei, Baoding, People's Republic of China.
| | - Jingtang Chen
- Hebei Branch of Chinese National Maize Improvement Center, Agricultural University of Hebei, Baoding, People's Republic of China.
| | - Liying Zhu
- Hebei Branch of Chinese National Maize Improvement Center, Agricultural University of Hebei, Baoding, People's Republic of China.
| | - Yongfeng Zhao
- Hebei Branch of Chinese National Maize Improvement Center, Agricultural University of Hebei, Baoding, People's Republic of China.
| | - Jinjie Guo
- Hebei Branch of Chinese National Maize Improvement Center, Agricultural University of Hebei, Baoding, People's Republic of China.
| | - Yaqun Huang
- Hebei Branch of Chinese National Maize Improvement Center, Agricultural University of Hebei, Baoding, People's Republic of China.
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