1
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Zhang B, Sun Q, Chen Z, Shu F, Chen J. Evaluation of zinc tolerance and accumulation in eight cultivars of bermudagrass (Cynodon spp.): implications for zinc phytoremediation. Biometals 2023; 36:1377-1390. [PMID: 37530928 DOI: 10.1007/s10534-023-00524-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 07/24/2023] [Indexed: 08/03/2023]
Abstract
Zinc (Zn) is a vital element for plant growth and development, however, excessive Zn is toxic to plants. Common bermudagrass (Cynodon dactylon (L.) Pers.) and hybrid bermudagrass (C. dactylon (L.) Pers. × C. transvaalensis Burtt-Davy) are widely used turfgrass species with strong tolerance to diverse abiotic stresses, including excessive Zn2+ stress. However, the variation of zinc tolerance and accumulation in different bermudagrass cultivars remain unclear. In this study, we systematically analyzed the growth performance, physiological index and ion concentration in eight commercial cultivars of common and hybrid bermudagrass under different concentration of Zn2+ treatments using pot experiments. The results indicated that four cultivars of common bermudagrass could tolerate 20 mM Zn2+, whereas four cultivars of hybrid bermudagrass could only tolerate 10 mM Zn2+. Among the four common bermudagrass cultivars, cultivar Guanzhong and Common showed stronger Zn tolerance and accumulation abilities than other two cultivars. Further analyses of the expression of selected Zn homeostasis-related genes indicated that bermudagrass cultivars with stronger tolerance to excessive Zn have at least one expression-elevated gene involved in Zn homeostasis. These results not only expanded our understanding of Zn tolerance and accumulation in bermudagrass but also facilitated the application of commercial bermudagrass cultivars in phytoremediation of Zn pollution.
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Affiliation(s)
- Bing Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.
| | - Qixue Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Zhuoting Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Fangzhi Shu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Jingbo Chen
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
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2
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Shahid I, Brunetto G, Ricachenevsky FK. Editorial: Capacity of the zinc mobilizing microbiome for climate-smart & sustainable agriculture. FRONTIERS IN PLANT SCIENCE 2023; 14:1323144. [PMID: 38023844 PMCID: PMC10660267 DOI: 10.3389/fpls.2023.1323144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023]
Affiliation(s)
- Izzah Shahid
- Department of Biotechnology, Faculty of Science & Technology, University of Central Punjab, Lahore, Pakistan
| | - Gustavo Brunetto
- Department of Soil Science and Graduate Program in Soil Science, Federal University of Santa Maria, Santa Maria, Brazil
| | - Felipe Klein Ricachenevsky
- Graduate Program in Cellular and Molecular Biology, Center of Biotechnology, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Graduate Program in Botany, Botany Department, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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3
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Saavedra Núñez G, González-Villanueva E, Ramos P. Floral Development on Vitis vinifera Is Associated with MADS-Box Transcription Factors through the Transcriptional Regulation of VviZIP3. PLANTS (BASEL, SWITZERLAND) 2023; 12:3322. [PMID: 37765487 PMCID: PMC10535425 DOI: 10.3390/plants12183322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/11/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023]
Abstract
Several grapevine (Vitis vinifera L.) cultivars show a tendency to develop parthenocarpic seedless grapes, affecting fruit yield and quality. This reproductive disorder originates in defective ovule fertilization due to a failure in pollen tube growth. Zinc (Zn) is a crucial trace element, playing a vital role in various physiological and metabolic processes. It is particularly essential for the healthy growth of flowers and fruits. Insufficient zinc has been suggested as a potential reason for issues in this development process. This microelement is taken up through a mechanism that involves transporters, including the ZRT-IRT-like protein (ZIP) gene family, associated with the influx of Zn into the cell. In grapevines, 20 genes for ZIP-type transporters have been described. In this study, we analyzed the expression pattern of VviZIP3 during flower development and employ transgenic methods to assess its transcriptional regulation. Furthermore, through computational examination of the promoter region, we identified two CArG boxes, recognized as responsive elements to MADS transcription factors. These factors play a key role in shaping various components of a flower, such as pollen. Our investigation of the VviZIP3 promoter confirms the functionality of these CArG boxes. Overall, our results suggest that the increased expression of VviZIP3 during flowering is likely under the influence of MADS transcription factors.
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Affiliation(s)
- Germán Saavedra Núñez
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460787, Chile; (G.S.N.); (E.G.-V.)
| | | | - Patricio Ramos
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460787, Chile; (G.S.N.); (E.G.-V.)
- Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, Talca 3480112, Chile
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4
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Ma Y, Wen Y, Wang C, Wu Z, Yuan X, Xiong Y, Chen K, He L, Zhang Y, Wang Z, Li L, Yang Z, Sun Y, Chen Z, Ma J. ZIP Genes Are Involved in the Retransfer of Zinc Ions during the Senescence of Zinc-Deficient Rice Leaves. Int J Mol Sci 2023; 24:13989. [PMID: 37762290 PMCID: PMC10531140 DOI: 10.3390/ijms241813989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Rice lacks sufficient amounts of zinc despite its vitality for human health. Leaf senescence enables redistribution of nutrients to other organs, yet Zn retransfer during deficiency is often overlooked. In this hydroponic experiment, we studied the effect of Zn deficiency on rice seedlings, focusing on the fourth leaf under control and deficient conditions. Growth phenotype analysis showed that the growth of rice nodal roots was inhibited in Zn deficiency, and the fourth leaf exhibited accelerated senescence and increased Zn ion transfer. Analyzing differentially expressed genes showed that Zn deficiency regulates more ZIP family genes involved in Zn ion retransfer. OsZIP3 upregulation under Zn-deficient conditions may not be induced by Zn deficiency, whereas OsZIP4 is only induced during Zn deficiency. Gene ontology enrichment analysis showed that Zn-deficient leaves mobilized more biological pathways (BPs) during aging, and the enrichment function differed from that of normal aging leaves. The most apparent "zinc ion transport" BP was stronger than that of normal senescence, possibly due to Zn-deficient leaves mobilizing large amounts of BP related to lipid metabolism during senescence. These results provide a basis for further functional analyses of genes and the study of trace element transfer during rice leaf senescence.
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Affiliation(s)
- Yangming Ma
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yanfang Wen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Cheng Wang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Ziniu Wu
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Xiaojuan Yuan
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Ying Xiong
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Kairui Chen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Limei He
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yue Zhang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhonglin Wang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Leilei Li
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhiyuan Yang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yongjian Sun
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhongkui Chen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Jun Ma
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
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5
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Kozak K, Antosiewicz DM. Tobacco as an efficient metal accumulator. Biometals 2023; 36:351-370. [PMID: 36097238 PMCID: PMC10082116 DOI: 10.1007/s10534-022-00431-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 07/29/2022] [Indexed: 11/26/2022]
Abstract
Tobacco (Nicotiana tabacum L.) is an important industrial crop plant. However, it efficiently accumulates metals, primarily cadmium (Cd) and also zinc (Zn), in its leaves. Therefore, it could be a source of cadmium intake by smokers. On the other hand, as a high leaf metal accumulator, it is widely used for phytoremediation of metal-contaminated soil. Both issues provide an important rationale for investigating the processes regulating metal homeostasis in tobacco. This work summarizes the results of research to date on the understanding of the molecular mechanisms determining the effective uptake of Zn and Cd, their translocation into shoots and accumulation in leaves. It also discusses the current state of research to improve the phytoremediation properties of tobacco through genetic modification and to limit leaf Cd content for the tobacco industry.
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Affiliation(s)
- Katarzyna Kozak
- Department of Plant Metal Homeostasis, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, 1 Miecznikowa Str, 02-096, Warszawa, Poland
| | - Danuta Maria Antosiewicz
- Department of Plant Metal Homeostasis, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, 1 Miecznikowa Str, 02-096, Warszawa, Poland.
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6
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Huertas R, Karpinska B, Ngala S, Mkandawire B, Maling'a J, Wajenkeche E, Kimani PM, Boesch C, Stewart D, Hancock RD, Foyer CH. Biofortification of common bean ( Phaseolus vulgaris L.) with iron and zinc: Achievements and challenges. Food Energy Secur 2023; 12:e406. [PMID: 38440694 PMCID: PMC10909572 DOI: 10.1002/fes3.406] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 06/01/2022] [Accepted: 06/08/2022] [Indexed: 03/06/2024] Open
Abstract
Micronutrient deficiencies (hidden hunger), particularly in iron (Fe) and zinc (Zn), remain one of the most serious public health challenges, affecting more than three billion people globally. A number of strategies are used to ameliorate the problem of micronutrient deficiencies and to improve the nutritional profile of food products. These include (i) dietary diversification, (ii) industrial food fortification and supplements, (iii) agronomic approaches including soil mineral fertilisation, bioinoculants and crop rotations, and (iv) biofortification through the implementation of biotechnology including gene editing and plant breeding. These efforts must consider the dietary patterns and culinary preferences of the consumer and stakeholder acceptance of new biofortified varieties. Deficiencies in Zn and Fe are often linked to the poor nutritional status of agricultural soils, resulting in low amounts and/or poor availability of these nutrients in staple food crops such as common bean. This review describes the genes and processes associated with Fe and Zn accumulation in common bean, a significant food source in Africa that plays an important role in nutritional security. We discuss the conventional plant breeding, transgenic and gene editing approaches that are being deployed to improve Fe and Zn accumulation in beans. We also consider the requirements of successful bean biofortification programmes, highlighting gaps in current knowledge, possible solutions and future perspectives.
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Affiliation(s)
- Raul Huertas
- Environmental and Biochemical SciencesThe James Hutton InstituteDundeeUK
| | - Barbara Karpinska
- School of Biosciences, College of Life and Environmental SciencesUniversity of BirminghamEdgbastonUK
| | - Sophia Ngala
- Department of Plant Science and Crop Protection, College of Agriculture and Veterinary SciencesUniversity of NairobiNairobiKenya
| | - Bertha Mkandawire
- The Food, Agriculture and Natural Resources Policy Analysis Network (FANRPAN)PretoriaSouth Africa
| | - Joyce Maling'a
- Kenya Agriculture and Livestock Research Organization (KALRO)Food Crops Research InstituteKitaleKenya
| | - Elizabeth Wajenkeche
- Kenya Agriculture and Livestock Research Organization (KALRO)Food Crops Research InstituteKitaleKenya
| | - Paul M. Kimani
- Department of Plant Science and Crop Protection, College of Agriculture and Veterinary SciencesUniversity of NairobiNairobiKenya
| | | | - Derek Stewart
- Environmental and Biochemical SciencesThe James Hutton InstituteDundeeUK
- School of Engineering and Physical SciencesHeriot‐Watt UniversityEdinburghUK
| | | | - Christine H. Foyer
- School of Biosciences, College of Life and Environmental SciencesUniversity of BirminghamEdgbastonUK
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7
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Kozak K, Papierniak-Wygladala A, Palusińska M, Barabasz A, Antosiewicz DM. Regulation and Function of Metal Uptake Transporter NtNRAMP3 in Tobacco. FRONTIERS IN PLANT SCIENCE 2022; 13:867967. [PMID: 35712563 PMCID: PMC9195099 DOI: 10.3389/fpls.2022.867967] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/29/2022] [Indexed: 05/06/2023]
Abstract
Natural resistance-associated macrophage protein (NRAMP) genes encode proteins with low substrate specificity, important for maintaining metal cross homeostasis in the cell. The role of these proteins in tobacco, an important crop plant with wide application in the tobacco industry as well as in phytoremediation of metal-contaminated soils, remains unknown. Here, we identified NtNRAMP3, the closest homologue to NRAMP3 proteins from other plant species, and functionally characterized it. A NtNRAMP3-GFP fusion protein was localized to the plasma membrane in tobacco epidermal cells. Expression of NtNRAMP3 in yeast was able to rescue the growth of Fe and Mn uptake defective Δfet3fet4 and Δsmf1 mutant yeast strains, respectively. Furthermore, NtNRAMP3 expression in wild-type Saccharomyces cerevisiae DY1457 yeast strain increased sensitivity to elevated concentrations of iron (Fe), manganese (Mn), copper (Cu), cobalt (Co), nickel (Ni), and cadmium (Cd). Taken together, these results point to a possible role in the uptake of metals. NtNRAMP3 was expressed in the leaves and to a lesser extent in the roots of tobacco plants. Its expression occurred mainly under control conditions and decreased very sharply in deficiency and excess of the tested metals. GUS-based analysis of the site-specific activity of the NtNRAMP3 promoter showed that it was primarily expressed in the xylem of leaf blades. Overall, our data indicate that the main function of NtNRAMP3 is to maintain cross homeostasis of Fe, Mn, Co, Cu, and Ni (also Cd) in leaves under control conditions by controlling xylem unloading.
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Affiliation(s)
| | | | | | | | - Danuta Maria Antosiewicz
- Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, Warsaw, Poland
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8
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Thiébaut N, Hanikenne M. Zinc deficiency responses: bridging the gap between Arabidopsis and dicotyledonous crops. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1699-1716. [PMID: 34791143 DOI: 10.1093/jxb/erab491] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
Zinc (Zn) deficiency is a widespread phenomenon in agricultural soils worldwide and has a major impact on crop yield and quality, and hence on human nutrition and health. Although dicotyledonous crops represent >30% of human plant-based nutrition, relatively few efforts have been dedicated to the investigation of Zn deficiency response mechanisms in dicotyledonous, in contrast to monocotyledonous crops, such as rice or barley. Here, we describe the Zn requirement and impact of Zn deficiency in several economically important dicotyledonous crops, Phaseolus vulgaris, Glycine max, Brassica oleracea, and Solanum lycopersicum. We briefly review our current knowledge of the Zn deficiency response in Arabidopsis and outline how this knowledge is translated in dicotyledonous crops. We highlight commonalities and differences between dicotyledonous species (and with monocotyledonous species) regarding the function and regulation of Zn transporters and chelators, as well as the Zn-sensing mechanisms and the role of hormones in the Zn deficiency response. Moreover, we show how the Zn homeostatic network intimately interacts with other nutrients, such as iron or phosphate. Finally, we outline how variation in Zn deficiency tolerance and Zn use efficiency among cultivars of dicotyledonous species can be leveraged for the design of Zn biofortification strategies.
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Affiliation(s)
- Noémie Thiébaut
- InBioS - PhytoSystems, Translational Plant Biology, University of Liège, 4000 Liège, Belgium
| | - Marc Hanikenne
- InBioS - PhytoSystems, Translational Plant Biology, University of Liège, 4000 Liège, Belgium
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9
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Clemens S. The cell biology of zinc. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1688-1698. [PMID: 34727160 DOI: 10.1093/jxb/erab481] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
Nearly 10% of all plant proteins belong to the zinc (Zn) proteome. They require Zn either for catalysis or as a structural element. Most of the protein-bound Zn in eukaryotic cells is found in the cytosol. The fundamental differences between transition metal cations in the stability of their complexes with organic ligands, as described by the Irving-Williams series, necessitate buffering of cytosolic Zn (the 'free Zn' pool) in the picomolar range (i.e. ~6 orders of magnitude lower than the total cellular concentration). Various metabolites and peptides, including nicotianamine, glutathione, and phytochelatins, serve as Zn buffers. They are hypothesized to supply Zn to enzymes, transporters, or the recently identified sensor proteins. Zn2+ acquisition is mediated by ZRT/IRT-like proteins. Metal tolerance proteins transport Zn2+ into vacuoles and the endoplasmic reticulum, the major Zn storage sites. Heavy metal ATPase-dependent efflux of Zn2+ is another mechanism to control cytosolic Zn. Spatially controlled Zn2+ influx or release from intracellular stores would result in dynamic modulation of cellular Zn pools, which may directly influence protein-protein interactions or the activities of enzymes involved in signaling cascades. Possible regulatory roles of such changes, as recently elucidated in mammalian cells, are discussed.
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Affiliation(s)
- Stephan Clemens
- Department of Plant Physiology and Faculty of Life Science: Food, Nutrition and Health, University of Bayreuth, Universitätsstrasse 30, D-95447 Bayreuth, Germany
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10
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Li C, Wang L, Wu J, Blamey FPC, Wang N, Chen Y, Ye Y, Wang L, Paterson DJ, Read TL, Wang P, Lombi E, Wang Y, Kopittke PM. Translocation of Foliar Absorbed Zn in Sunflower ( Helianthus annuus) Leaves. FRONTIERS IN PLANT SCIENCE 2022; 13:757048. [PMID: 35310668 PMCID: PMC8924476 DOI: 10.3389/fpls.2022.757048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
Foliar zinc (Zn) fertilization is an important approach for overcoming crop Zn deficiency, yet little is known regarding the subsequent translocation of this foliar-applied Zn. Using synchrotron-based X-ray fluorescence microscopy (XFM) and transcriptome analysis, the present study examined the translocation of foliar absorbed Zn in sunflower (Helianthus annuus) leaves. Although bulk analyses showed that there had been minimal translocation of the absorbed Zn out of the leaf within 7 days, in situ analyses showed that the distribution of Zn in the leaf had changed with time. Specifically, when Zn was applied to the leaf for 0.5 h and then removed, Zn primarily accumulated within the upper and lower epidermal layers (when examined after 3 h), but when examined after 24 h, the Zn had moved to the vascular tissues. Transcriptome analyses identified a range of genes involved in stress response, cell wall reinforcement, and binding that were initially upregulated following foliar Zn application, whereas they were downregulated after 24 h. These observations suggest that foliar Zn application caused rapid stress to the leaf, with the initial Zn accumulation in the epidermis as a detoxification strategy, but once this stress decreased, Zn was then moved to the vascular tissues. Overall, this study has shown that despite foliar Zn application causing rapid stress to the leaf and that most of the Zn stayed within the leaf over 7 days, the distribution of Zn in the leaf had changed, with Zn mostly located in the vascular tissues 24 h after the Zn had been applied. Not only do the data presented herein provide new insight for improving the efficiency of foliar Zn fertilizers, but our approach of combining XFM with a transcriptome methodological system provides a novel approach for the study of element translocation in plants.
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Affiliation(s)
- Cui Li
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | - Linlin Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | - Jingtao Wu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - F. Pax C. Blamey
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Nina Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | - Yanlong Chen
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | - Yin Ye
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | - Lei Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | | | - Thea L. Read
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, Australia
| | - Peng Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, Australia
| | - Yuheng Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi’an, China
| | - Peter M. Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD, Australia
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11
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Spielmann J, Detry N, Thiébaut N, Jadoul A, Schloesser M, Motte P, Périlleux C, Hanikenne M. ZRT-IRT-Like PROTEIN 6 expression perturbs local ion homeostasis in flowers and leads to anther indehiscence and male sterility. PLANT, CELL & ENVIRONMENT 2022; 45:206-219. [PMID: 34628686 DOI: 10.1111/pce.14200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 09/22/2021] [Accepted: 09/25/2021] [Indexed: 06/13/2023]
Abstract
Metallic micronutrients are essential throughout the plant life cycle. Maintaining metal homeostasis in plant tissues requires a highly complex and finely tuned network controlling metal uptake, transport, distribution and storage. Zinc and cadmium hyperaccumulation, such as observed in the model plant Arabidopsis halleri, represents an extreme evolution of this network. Here, non-ectopic overexpression of the A. halleri ZIP6 (AhZIP6) gene, encoding a zinc and cadmium influx transporter, in Arabidopsis thaliana enabled examining the importance of zinc for flower development and reproduction. We show that AhZIP6 expression in flowers leads to male sterility resulting from anther indehiscence in a dose-dependent manner. The sterility phenotype is associated to delayed tapetum degradation and endothecium collapse, as well as increased magnesium and potassium accumulation and higher expression of the MHX gene in stamens. It is rescued by the co-expression of the zinc efflux transporter AhHMA4, linking the sterility phenotype to zinc homeostasis. Altogether, our results confirm that AhZIP6 is able to transport zinc in planta and highlight the importance of fine-tuning zinc homeostasis in reproductive organs. The study illustrates how the characterization of metal hyperaccumulation mechanisms can reveal key nodes and processes in the metal homeostasis network.
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Affiliation(s)
- Julien Spielmann
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Nathalie Detry
- InBioS-PhytoSystems, Laboratory of Plant Physiology, University of Liège, Liège, Belgium
| | - Noémie Thiébaut
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Alice Jadoul
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Marie Schloesser
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Patrick Motte
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Claire Périlleux
- InBioS-PhytoSystems, Laboratory of Plant Physiology, University of Liège, Liège, Belgium
| | - Marc Hanikenne
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
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12
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Hamzah Saleem M, Usman K, Rizwan M, Al Jabri H, Alsafran M. Functions and strategies for enhancing zinc availability in plants for sustainable agriculture. FRONTIERS IN PLANT SCIENCE 2022; 13:1033092. [PMID: 36275511 PMCID: PMC9586378 DOI: 10.3389/fpls.2022.1033092] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/21/2022] [Indexed: 05/13/2023]
Abstract
Zinc (Zn), which is regarded as a crucial micronutrient for plants, and is considered to be a vital micronutrient for plants. Zn has a significant role in the biochemistry and metabolism of plants owing to its significance and toxicity for biological systems at specific Zn concentrations, i.e., insufficient or harmful above the optimal range. It contributes to several cellular and physiological activities of plants and promotes plant growth, development, and yield. Zn is an important structural, enzymatic, and regulatory component of many proteins and enzymes. Consequently, it is essential to understand the interplay and chemistry of Zn in soil, its absorption, transport, and the response of plants to Zn deficiency, as well as to develop sustainable strategies for Zn deficiency in plants. Zn deficiency appears to be a widespread and prevalent issue in crops across the world, resulting in severe production losses that compromise nutritional quality. Considering this, enhancing Zn usage efficiency is the most effective strategy, which entails improving the architecture of the root system, absorption of Zn complexes by organic acids, and Zn uptake and translocation mechanisms in plants. Here, we provide an overview of various biotechnological techniques to improve Zn utilization efficiency and ensure the quality of crop. In light of the current status, an effort has been made to further dissect the absorption, transport, assimilation, function, deficiency, and toxicity symptoms caused by Zn in plants. As a result, we have described the potential information on diverse solutions, such as root structure alteration, the use of biostimulators, and nanomaterials, that may be used efficiently for Zn uptake, thereby assuring sustainable agriculture.
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Affiliation(s)
| | - Kamal Usman
- Agricultural Research Station, Office of VP for Research and Graduate Studies, Qatar University, Doha, Qatar
| | | | - Hareb Al Jabri
- Center for Sustainable Development (CSD), College of Arts and Sciences, Qatar University, Doha, Qatar
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Mohammed Alsafran
- Agricultural Research Station, Office of VP for Research and Graduate Studies, Qatar University, Doha, Qatar
- Central Laboratories Unit (CLU), Office of VP for Research and Graduate Studies, Qatar University, Doha, Qatar
- *Correspondence: Mohammed Alsafran,
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13
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Nag A, Gupta K, Dubey N, Mishra SK, Panigrahi J. Genomic characterization of ZIP genes in pigeonpea ( CcZIP) and their expression analysis among the genotypes with contrasting host response to pod borer. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:2787-2804. [PMID: 35035136 PMCID: PMC8720128 DOI: 10.1007/s12298-021-01111-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 12/05/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
UNLABELLED Zinc (Zn) is a vital micronutrient from the perspective of biofortification and biotic stress endurance in pigeonpea. The ZIP transporters with domain (Pfam: PF02535) regulate uptake and transport of metal ions, including Zn, in consonance with plant metal homeostasis. Genome-wide analysis in pigeonpea identified 19 non-redundant members of ZIP family (CcZIP) that were analyzed for gene structure, conserved motifs and homology besides other structural and biochemical parameters. Intra-specific as well as the inter-specific phylogenetic relationships of these 19 CcZIPs were elucidated by comparison with ZIP proteins of Arabidopsis thaliana, Medicago truncatula, Phaseolus vulgaris and Glycine max. In addition to gene structure, the cis-regulatory elements (CREs) in the promoter region were also identified. It revealed several stress responsive CREs that might be regulatory for differential expression of CcZIP proteins. Expression analysis showed that both CcZIP3 and CcZIP15, having zinc deficiency responsive element, up-regulated in the reproductive leaf tissues and down-regulated in matured green pods of the pod borer resistant genotypes with higher zinc content. Alternately, the expression of CcZIP6 and CcZIP13 was higher in matured green pods than reproductive leaves of the resistant genotypes. These findings on differential expression indicate the possible role of these CcZIPs on the mobilization of Zn from leaves to pods, phloem loading and unloading, and higher accumulation of seed zinc in pod borer resistant genotypes used in this study. Further functional characterization of CcZIP genes could shed light on their role in bio-fortification and genetic improvement to inhibit the pod borer herbivory in pigeonpea. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12298-021-01111-1.
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Affiliation(s)
- Atul Nag
- Department of Biosciences and Bioinformatics, Berhampur University, Bhanja Bihar, Berhampur, Odisha 760007 India
- Department of Biotechnology and Bioinformatics, Sambalpur University, Jyoti vihar, Odisha 768019 India
| | - Kapil Gupta
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan 305817 India
- Department of Biotechnology, Sidhharth University, Kapilvastu, Siddharth Nagar, UP 272202 India
| | - Neeraj Dubey
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan 305817 India
| | - Sujit K. Mishra
- Department of Biotechnology and Bioinformatics, Sambalpur University, Jyoti vihar, Odisha 768019 India
- Department of Zoology, Centurion University of Technology and Management, R. Sitapur, Odisha India
| | - Jogeswar Panigrahi
- Department of Biosciences and Bioinformatics, Berhampur University, Bhanja Bihar, Berhampur, Odisha 760007 India
- Department of Biotechnology and Bioinformatics, Sambalpur University, Jyoti vihar, Odisha 768019 India
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan 305817 India
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14
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Amini S, Arsova B, Gobert S, Carnol M, Bosman B, Motte P, Watt M, Hanikenne M. Transcriptional regulation of ZIP genes is independent of local zinc status in Brachypodium shoots upon zinc deficiency and resupply. PLANT, CELL & ENVIRONMENT 2021; 44:3376-3397. [PMID: 34263935 DOI: 10.1111/pce.14151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 07/05/2021] [Accepted: 07/10/2021] [Indexed: 06/13/2023]
Abstract
The biological processes underlying zinc homeostasis are targets for genetic improvement of crops to counter human malnutrition. Detailed phenotyping, ionomic, RNA-Seq analyses and flux measurements with 67 Zn isotope revealed whole-plant molecular events underlying zinc homeostasis upon varying zinc supply and during zinc resupply to starved Brachypodium distachyon (Brachypodium) plants. Although both zinc deficiency and excess hindered Brachypodium growth, accumulation of biomass and micronutrients into roots and shoots differed depending on zinc supply. The zinc resupply dynamics involved 1,893 zinc-responsive genes. Multiple zinc-regulated transporter and iron-regulated transporter (IRT)-like protein (ZIP) transporter genes and dozens of other genes were rapidly and transiently down-regulated in early stages of zinc resupply, suggesting a transient zinc shock, sensed locally in roots. Notably, genes with identical regulation were observed in shoots without zinc accumulation, pointing to root-to-shoot signals mediating whole-plant responses to zinc resupply. Molecular events uncovered in the grass model Brachypodium are useful for the improvement of staple monocots.
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Affiliation(s)
- Sahand Amini
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Borjana Arsova
- Root Dynamics Group, IBG-2 - Plant Sciences, Institut für Bio- und Geowissenschaften (IBG), Forschungszentrum Jülich, Jülich, Germany
| | - Sylvie Gobert
- Laboratory of Oceanology, MARE Center, FOCUS, University of Liège, Liège, Belgium
- Station de Recherches Sous-Marines et Océanographiques (STARESO), Pointe de la Revellata, Calvi, France
| | - Monique Carnol
- InBioS - PhytoSystems, Laboratory of Plant and Microbial Ecology, Department of Biology, Ecology, Evolution, University of Liège, Liège, Belgium
| | - Bernard Bosman
- InBioS - PhytoSystems, Laboratory of Plant and Microbial Ecology, Department of Biology, Ecology, Evolution, University of Liège, Liège, Belgium
| | - Patrick Motte
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Michelle Watt
- Root Dynamics Group, IBG-2 - Plant Sciences, Institut für Bio- und Geowissenschaften (IBG), Forschungszentrum Jülich, Jülich, Germany
| | - Marc Hanikenne
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
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15
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Zeng H, Wu H, Yan F, Yi K, Zhu Y. Molecular regulation of zinc deficiency responses in plants. JOURNAL OF PLANT PHYSIOLOGY 2021; 261:153419. [PMID: 33915366 DOI: 10.1016/j.jplph.2021.153419] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 05/27/2023]
Abstract
Zinc (Zn) is an essential micronutrient for plants and animals. Because of its low availability in arable soils worldwide, Zn deficiency is becoming a serious agricultural problem resulting in decreases of crop yield and nutritional quality. Plants have evolved multiple responses to adapt to low levels of soil Zn supply, involving biochemical and physiological changes to improve Zn acquisition and utilization, and defend against Zn deficiency stress. In this review, we summarize the physiological and biochemical adaptations of plants to Zn deficiency, the roles of transporters and metal-binding compounds in Zn homeostasis regulation, and the recent progresses in understanding the sophisticated regulatory mechanisms of Zn deficiency responses that have been made by molecular and genetic analyses, as well as diverse 'omics' studies. Zn deficiency responses are tightly controlled by multiple layers of regulation, such as transcriptional regulation that is mediated by transcription factors like F-group bZIP proteins, epigenetic regulation at the level of chromatin, and post-transcriptional regulation mediated by small RNAs and alternative splicing. The insights into the regulatory network underlying Zn deficiency responses and the perspective for further understandings of molecular regulation of Zn deficiency responses have been discussed. The understandings of the regulatory mechanisms will be important for improving Zn deficiency tolerance, Zn use efficiency, and Zn biofortification in plants.
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Affiliation(s)
- Houqing Zeng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Haicheng Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Feng Yan
- Institute of Agronomy and Plant Breeding, Justus Liebig University of Giessen, Giessen, 35392, Germany
| | - Keke Yi
- Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yiyong Zhu
- Agricultural Resource and Environment Experiment Teaching Center, College of Resource and Environment Science, Nanjing Agricultural University, Nanjing, 210095, China.
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16
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Maślińska-Gromadka K, Barabasz A, Palusińska M, Kozak K, Antosiewicz DM. Suppression of NtZIP4A/ B Changes Zn and Cd Root-to-Shoot Translocation in a Zn/Cd Status-Dependent Manner. Int J Mol Sci 2021; 22:5355. [PMID: 34069632 PMCID: PMC8161331 DOI: 10.3390/ijms22105355] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/26/2021] [Accepted: 04/28/2021] [Indexed: 11/16/2022] Open
Abstract
In tobacco, the efficiency of Zn translocation to shoots depends on Zn/Cd status. Previous studies pointed to the specific contribution of root parts in the regulation of this process, as well as the role of NtZIP4A/B (from the ZIP family; Zrt Irt-like Proteins). Here, to verify this hypothesis, NtZIP4A/B RNAi lines were generated. Then, in plants exposed to combinations of Zn and Cd concentrations in the medium, the consequences of NtZIP4A/B suppression for the translocation of both metals were determined. Furthermore, the apical, middle, and basal root parts were examined for accumulation of both metals, for Zn localization (using Zinpyr-1), and for modifications of the expression pattern of ZIP genes. Our results confirmed the role of NtZIP4A/B in the control of Zn/Cd-status-dependent transfer of both metals to shoots. Furthermore, they indicated that the middle and basal root parts contributed to the regulation of this process by acting as a reservoir for excess Zn and Cd. Expression studies identified several candidate ZIP genes that interact with NtZIP4A/B in the root in regulating Zn and Cd translocation to the shoot, primarily NtZIP1-like in the basal root part and NtZIP2 in the middle one.
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Affiliation(s)
| | | | | | | | - Danuta Maria Antosiewicz
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, 1 Miecznikowa Str., 02-096 Warszawa, Poland; (K.M.-G.); (A.B.); (M.P.); (K.K.)
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17
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Jiang Y, Han J, Xue W, Wang J, Wang B, Liu L, Zou J. Overexpression of SmZIP plays important roles in Cd accumulation and translocation, subcellular distribution, and chemical forms in transgenic tobacco under Cd stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 214:112097. [PMID: 33667736 DOI: 10.1016/j.ecoenv.2021.112097] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/17/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
Plant ZIP genes represent an important transporter family and may be involved in cadmium (Cd) accumulation and Cd resistance. In order to explore the function of SmZIP isolated from Salix matsudana, the roles of SmZIP in Cd tolerance, uptake, translocation, and distribution were determined in the present investigation. The transgenic SmZIP tobacco was found to respond to external Cd stress differently from WT tobacco by exhibiting a higher growth rate and more vigorous phenotype. The overexpression of SmZIP in tobacco resulted in the reduction of Cd stress-induced phytotoxic effects. Compared to WT tobacco, the Cd content of the root, stem, and leaf in the transgenic tobacco increased, and the zinc, iron, copper, and manganese contents also increased. The assimilation factor, translocation factor and bioconcentration factor of Cd were improved. The scanning electron microscopy and energy dispersive X-ray analysis results of the root maturation zone exposed to Cd for 24 h showed that Cd was transferred through the root epidermis, cortex, and vascular cylinder and migrated to the aboveground parts via the vascular cylinder, resulting in the transgenic tobacco accumulating more Cd than the WT plants. Based on the transverse section of the leaf main vein and leaf blade, Cd was transported through the vascular tissues to the leaves and accumulated more greatly in the leaf epidermis, but less in the leaf mesophyll cells, following the overexpression of SmZIP to reduce the photosynthetic toxicity. The overexpression of SmZIP resulted in the redistribution of Cd at the subcellular level, a decrease in the percentage of Cd in the cell wall, and an increase of the Cd in the soluble fraction in both the roots and leaves. It also changed the percentage composition of different Cd chemical forms by elevating the proportion of Cd extracted using 2% HAc and 0.6 mol/L HCl, but lowering that of the Cd extracted using 1 mol/L NaCl in both the leaves and roots under 10 and 100 μmol/L Cd stress for 28 d. The results implied that SmZIP played important roles in advancing Cd uptake, accumulation, and translocation, as well as in enhancing Cd resistance by altering the Cd subcellular distribution and chemical forms in the transgenic tobacco. The study will be useful for future phytoremediation applications to clean up Cd-contaminated soil.
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Affiliation(s)
- Yi Jiang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Jiahui Han
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Wenxiu Xue
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Jiayue Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China; Tianjin Wutong Middle School, China
| | - Binghan Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Liangjing Liu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China
| | - Jinhua Zou
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, China.
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18
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Angulo-Bejarano PI, Puente-Rivera J, Cruz-Ortega R. Metal and Metalloid Toxicity in Plants: An Overview on Molecular Aspects. PLANTS (BASEL, SWITZERLAND) 2021; 10:635. [PMID: 33801570 PMCID: PMC8066251 DOI: 10.3390/plants10040635] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 12/17/2022]
Abstract
Worldwide, the effects of metal and metalloid toxicity are increasing, mainly due to anthropogenic causes. Soil contamination ranks among the most important factors, since it affects crop yield, and the metals/metalloids can enter the food chain and undergo biomagnification, having concomitant effects on human health and alterations to the environment. Plants have developed complex mechanisms to overcome these biotic and abiotic stresses during evolution. Metals and metalloids exert several effects on plants generated by elements such as Zn, Cu, Al, Pb, Cd, and As, among others. The main strategies involve hyperaccumulation, tolerance, exclusion, and chelation with organic molecules. Recent studies in the omics era have increased knowledge on the plant genome and transcriptome plasticity to defend against these stimuli. The aim of the present review is to summarize relevant findings on the mechanisms by which plants take up, accumulate, transport, tolerate, and respond to this metal/metalloid stress. We also address some of the potential applications of biotechnology to improve plant tolerance or increase accumulation.
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Affiliation(s)
- Paola I. Angulo-Bejarano
- Laboratorio de Alelopatía, Departamento de Ecología Funcional, Instituto de Ecología, Universidad Nacional Autónoma de México, UNAM, 275, Ciudad Universitaria D.F. Circuito Exterior s/n Anexo al Jardín Botánico Exterior, México City 04510, Mexico; (P.I.A.-B.); (J.P.-R.)
- School of Engineering and Sciences, Centre of Bioengineering, Tecnologico de Monterrey, Queretaro 21620, Mexico
| | - Jonathan Puente-Rivera
- Laboratorio de Alelopatía, Departamento de Ecología Funcional, Instituto de Ecología, Universidad Nacional Autónoma de México, UNAM, 275, Ciudad Universitaria D.F. Circuito Exterior s/n Anexo al Jardín Botánico Exterior, México City 04510, Mexico; (P.I.A.-B.); (J.P.-R.)
| | - Rocío Cruz-Ortega
- Laboratorio de Alelopatía, Departamento de Ecología Funcional, Instituto de Ecología, Universidad Nacional Autónoma de México, UNAM, 275, Ciudad Universitaria D.F. Circuito Exterior s/n Anexo al Jardín Botánico Exterior, México City 04510, Mexico; (P.I.A.-B.); (J.P.-R.)
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19
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Hanikenne M, Esteves SM, Fanara S, Rouached H. Coordinated homeostasis of essential mineral nutrients: a focus on iron. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2136-2153. [PMID: 33175167 DOI: 10.1093/jxb/eraa483] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/13/2020] [Indexed: 05/22/2023]
Abstract
In plants, iron (Fe) transport and homeostasis are highly regulated processes. Fe deficiency or excess dramatically limits plant and algal productivity. Interestingly, complex and unexpected interconnections between Fe and various macro- and micronutrient homeostatic networks, supposedly maintaining general ionic equilibrium and balanced nutrition, are currently being uncovered. Although these interactions have profound consequences for our understanding of Fe homeostasis and its regulation, their molecular bases and biological significance remain poorly understood. Here, we review recent knowledge gained on how Fe interacts with micronutrient (e.g. zinc, manganese) and macronutrient (e.g. sulfur, phosphate) homeostasis, and on how these interactions affect Fe uptake and trafficking. Finally, we highlight the importance of developing an improved model of how Fe signaling pathways are integrated into functional networks to control plant growth and development in response to fluctuating environments.
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Affiliation(s)
- Marc Hanikenne
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, 4000 Liège, Belgium
| | - Sara M Esteves
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, 4000 Liège, Belgium
| | - Steven Fanara
- InBioS - PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, 4000 Liège, Belgium
| | - Hatem Rouached
- BPMP, Univ. Montpellier, CNRS, INRA, Montpellier SupAgro, Montpellier, France
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
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20
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Ricachenevsky FK, Punshon T, Salt DE, Fett JP, Guerinot ML. Arabidopsis thaliana zinc accumulation in leaf trichomes is correlated with zinc concentration in leaves. Sci Rep 2021; 11:5278. [PMID: 33674630 PMCID: PMC7935932 DOI: 10.1038/s41598-021-84508-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/17/2021] [Indexed: 11/21/2022] Open
Abstract
Zinc (Zn) is a key micronutrient for plants and animals, and understanding Zn homeostasis in plants can improve both agriculture and human health. While root Zn transporters in plant model species have been characterized in detail, comparatively little is known about shoot processes controlling Zn concentrations and spatial distribution. Previous work showed that Zn hyperaccumulator species such as Arabidopsis halleri accumulate Zn and other metals in leaf trichomes. To date there is no systematic study regarding Zn accumulation in the trichomes of the non-accumulating, genetic model species A. thaliana. Here, we used Synchrotron X-Ray Fluorescence mapping to show that Zn accumulates at the base of trichomes of A. thaliana. Using transgenic and natural accessions of A thaliana that vary in bulk leaf Zn concentration, we demonstrate that higher leaf Zn increases total Zn found at the base of trichome cells. Our data indicates that Zn accumulation in trichomes is a function of the Zn status of the plant, and provides the basis for future studies on a genetically tractable plant species to understand the molecular steps involved in Zn spatial distribution in leaves.
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Affiliation(s)
- Felipe K Ricachenevsky
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande Do Sul, Porto Alegre, Brazil. .,Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, Porto Alegre, RS, 9500, Brazil. .,Department of Biological Sciences, Life Sciences Center, Dartmouth College, 78 College St, Hanover, NH, 03755, USA.
| | - Tracy Punshon
- Department of Biological Sciences, Life Sciences Center, Dartmouth College, 78 College St, Hanover, NH, 03755, USA
| | - David E Salt
- Future Food Beacon of Excellence and the School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK
| | - Janette P Fett
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande Do Sul, Porto Alegre, Brazil.,Departamento de Botânica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, Porto Alegre, RS, 9500, Brazil
| | - Mary Lou Guerinot
- Department of Biological Sciences, Life Sciences Center, Dartmouth College, 78 College St, Hanover, NH, 03755, USA.
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21
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Batova YV, Kaznina NM, Titov AF. Effect of Low Temperature on the Intensity of Oxidative Processes and the Activity of Antioxidant Enzymes in Wheat Plants at Optimal and Excessive Zinc Concentrations in the Root Medium. BIOL BULL+ 2021. [DOI: 10.1134/s1062359021010039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Wang Y, Yang J, Miao R, Kang Y, Qi Z. A novel zinc transporter essential for Arabidopsis zinc and iron-dependent growth. JOURNAL OF PLANT PHYSIOLOGY 2021; 256:153296. [PMID: 33161180 DOI: 10.1016/j.jplph.2020.153296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/03/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
Zinc (Zn), an essential micronutrient, is absorbed by plant roots and redistributed to leaves. This process must be finely regulated in order to avoid toxic Zn2+ overaccumulation, which can arise due to Zn2+ oversupply or Zn2+ hyperaccumulation induced by Fe2+ deficiency. Although several proteins in Arabidopsis thaliana are essential for retaining Zn in the root and partitioning it from roots to leaves, how Zn2+ homeostasis in leaves is maintained is largely unknown. In this study, we identified a novel Golgi-localized protein named ZINC NUTRIENT ESSENTIAL1 (AtZNE1,At3g08650) in Arabidopsis. AtZNE1 contains 14 putative transmembrane domains. AtZNE1 promoter has strong activity in the root and leaf. Its expression complemented the increased sensitivity of a yeast mutant to excess Zn2+. The disruption of AtZNE1 in the T-DNA insertion mutant atzne1 caused growth defect under excess-Zn or Fe deficit conditions, but had no effects on the total Zn and Fe contents. We propose that AtZNE1 plays a vital role in plant adaptation to excess Zn or Fe deficiency.
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Affiliation(s)
- Yaohui Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, PR China; State Key Laboratory of Reproductive Regulatory and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, 010010, PR China
| | - Ju Yang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, PR China; State Key Laboratory of Reproductive Regulatory and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, 010010, PR China
| | - Ruiying Miao
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, PR China; State Key Laboratory of Reproductive Regulatory and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, 010010, PR China
| | - Yan Kang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, PR China; State Key Laboratory of Reproductive Regulatory and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, 010010, PR China.
| | - Zhi Qi
- Key Laboratory of Forage and Endemic Crop Biotechnology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot, 010010, PR China; State Key Laboratory of Reproductive Regulatory and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot, 010010, PR China.
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23
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Gupta PK, Balyan HS, Sharma S, Kumar R. Biofortification and bioavailability of Zn, Fe and Se in wheat: present status and future prospects. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:1-35. [PMID: 33136168 DOI: 10.1007/s00122-020-03709-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/13/2020] [Indexed: 05/02/2023]
Abstract
Knowledge of genetic variation, genetics, physiology/molecular basis and breeding (including biotechnological approaches) for biofortification and bioavailability for Zn, Fe and Se will help in developing nutritionally improved wheat. Biofortification of wheat cultivars for micronutrients is a priority research area for wheat geneticists and breeders. It is known that during breeding of wheat cultivars for productivity and quality, a loss of grain micronutrient contents occurred, leading to decline in nutritional quality of wheat grain. Keeping this in view, major efforts have been made during the last two decades for achieving biofortification and bioavailability of wheat grain for micronutrients including Zn, Fe and Se. The studies conducted so far included evaluation of gene pools for contents of not only grain micronutrients as above, but also for phytic acid (PA) or phytate and phytase, so that, while breeding for the micronutrients, bioavailability is also improved. For this purpose, QTL interval mapping and GWAS were carried out to identify QTLs/genes and associated markers that were subsequently used for marker-assisted selection (MAS) during breeding for biofortification. Studies have also been conducted to understand the physiology and molecular basis of biofortification, which also allowed identification of genes for uptake, transport and storage of micronutrients. Transgenics using transgenes have also been produced. The breeding efforts led to the development of at least a dozen cultivars with improved contents of grain micronutrients, although land area occupied by these biofortified cultivars is still marginal. In this review, the available information on different aspects of biofortification and bioavailability of micronutrients including Zn, Fe and Se in wheat has been reviewed for the benefit of those, who plan to start work or already conducting research in this area.
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Affiliation(s)
- P K Gupta
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, U.P, 250004, India.
| | - H S Balyan
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, U.P, 250004, India
| | - Shailendra Sharma
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, U.P, 250004, India
| | - Rahul Kumar
- Department of Genetics and Plant Breeding, Chaudhary Charan Singh University, Meerut, U.P, 250004, India
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Spielmann J, Ahmadi H, Scheepers M, Weber M, Nitsche S, Carnol M, Bosman B, Kroymann J, Motte P, Clemens S, Hanikenne M. The two copies of the zinc and cadmium ZIP6 transporter of Arabidopsis halleri have distinct effects on cadmium tolerance. PLANT, CELL & ENVIRONMENT 2020; 43:2143-2157. [PMID: 32445418 DOI: 10.1111/pce.13806] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/16/2020] [Accepted: 05/16/2020] [Indexed: 06/11/2023]
Abstract
Plants have the ability to colonize highly diverse environments. The zinc and cadmium hyperaccumulator Arabidopsis halleri has adapted to establish populations on soils covering an extreme range of metal availabilities. The A. halleri ZIP6 gene presents several hallmarks of hyperaccumulation candidate genes: it is constitutively highly expressed in roots and shoots and is associated with a zinc accumulation quantitative trait locus. Here, we show that AhZIP6 is duplicated in the A. halleri genome. The two copies are expressed mainly in the vasculature in both A. halleri and Arabidopsis thaliana, indicative of conserved cis regulation, and acquired partial organ specialization. Yeast complementation assays determined that AhZIP6 is a zinc and cadmium transporter. AhZIP6 silencing in A. halleri or expression in A. thaliana alters cadmium tolerance, but has no impact on zinc and cadmium accumulation. AhZIP6-silenced plants display reduced cadmium uptake upon short-term exposure, adding AhZIP6 to the limited number of Cd transporters supported by in planta evidence. Altogether, our data suggest that AhZIP6 is key to fine-tune metal homeostasis in specific cell types. This study additionally highlights the distinct fates of duplicated genes in A. halleri.
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Affiliation(s)
- Julien Spielmann
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Hassan Ahmadi
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Maxime Scheepers
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Michael Weber
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Sarah Nitsche
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Monique Carnol
- InBioS-PhytoSystems, Laboratory of Plant and Microbial Ecology, University of Liège, Liège, Belgium
| | - Bernard Bosman
- InBioS-PhytoSystems, Laboratory of Plant and Microbial Ecology, University of Liège, Liège, Belgium
| | - Juergen Kroymann
- CNRS, AgroParisTech, Ecologie Systématique et Evolution, Université Paris-Saclay, Orsay, France
| | - Patrick Motte
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Marc Hanikenne
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
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25
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Gindri RG, Navarro BB, da Cruz Dias PV, Tarouco CP, Nicoloso FT, Brunetto G, Berghetti ÁLP, da Silva LOS, Fett JP, Menguer PK, Ricachenevsky FK. Physiological responses of rice ( Oryza sativa L.) oszip7 loss-of-function plants exposed to varying Zn concentrations. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2020; 26:1349-1359. [PMID: 32647453 PMCID: PMC7326754 DOI: 10.1007/s12298-020-00824-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/27/2020] [Accepted: 05/04/2020] [Indexed: 05/07/2023]
Abstract
Rice is a daily staple for half of the world's population. However, rice grains are poor in micronutrients such as Fe and Zn, the two most commonly deficient minerals in the human diet. In plants, Fe and Zn must be absorbed from the soil, distributed and stored, so that their concentrations are maintained at sufficient but non-toxic levels. The understanding of mechanisms of Fe and Zn homeostasis in plants has the potential to benefit agriculture, improving the use of micronutrients by plants, as well as to indicate approaches that aim at biofortification of the grains. ZIP transporters are commonly associated with Zn uptake, but there are few reports about their physiological relevance in planta. Here we describe a Tos17 loss-of-function line for the Zn plasma membrane transporter OsZIP7 (oszip7). We showed that the absence of functional OsZIP7 leads to deregulated Zn partitioning, increasing Zn accumulation in roots but decreasing in shoots and seeds. We also demonstrated that, upon Zn deficiency, oszip7 plants slightly increase their photosynthetic performance, suggesting that these plants might be primed for Zn deficiency which makes them more tolerant. On the other hand, we found that Zn excess is more deleterious to oszip7 plants compared to wild type, which may be linked to secondary effects in concentrations of other elements such as Fe. Our data suggest that OsZIP7 is important for Zn homeostasis under physiological Zn concentrations, and that Fe homeostasis might be affected due to loss of function of OsZIP7.
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Affiliation(s)
- Rafael Gonçalves Gindri
- Programa de Pós Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Bruno Bachiega Navarro
- Programa de Pós Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Pedro Vinicius da Cruz Dias
- Curso de Agronomia, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima 1000, Prédio 16, Sala 3254, Santa Maria, Rio Grande Do Sul CEP 97105-900 Brazil
| | | | - Fernando Teixeira Nicoloso
- Programa de Pós Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
- Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Gustavo Brunetto
- Programa de Pós Graduação em Ciência do Solo, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Álvaro Luís Pasquetti Berghetti
- Centro de Ciências Rurais, Programa de Pós graduação em Engenharia Florestal, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | | | - Janette Palma Fett
- Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Felipe Klein Ricachenevsky
- Programa de Pós Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
- Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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26
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Palusińska M, Barabasz A, Kozak K, Papierniak A, Maślińska K, Antosiewicz DM. Zn/Cd status-dependent accumulation of Zn and Cd in root parts in tobacco is accompanied by specific expression of ZIP genes. BMC PLANT BIOLOGY 2020; 20:37. [PMID: 31969116 PMCID: PMC6977228 DOI: 10.1186/s12870-020-2255-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 01/16/2020] [Indexed: 05/30/2023]
Abstract
BACKGROUND Root-to-shoot translocation of zinc (Zn) and cadmium (Cd) depends on the concentrations of both metals in the medium. A previous study on tobacco (Nicotiana tabacum) pointed to the contribution of NtZIP1, NtZIP2, NtZIP4 and NtIRT1-like in the regulation of this phenomenon. To learn more, Zn and Cd accumulation, root/shoot distribution and the expression of ZIP genes were investigated in the apical, middle and basal root parts. RESULTS We show that Zn/Cd status-dependent root-shoot distribution of both metals was related to distinct metal accumulation in root parts. At low Zn and Cd in the medium, the apical part contained the highest metal level; at higher concentrations, the middle and basal parts were the major sink for excess metal. The above were accompanied by root part-specific expression pattern modifications of ZIPs (NtZIP1-like, NtZIP2, NtZIP4A/B, NtZIP5A/B, NtZIP5-like, NtZIP8, NtZIP11, NtIRT1, and NtIRT1-like) that fell into four categories with respect to the root part. Furthermore, for lower Zn/Cd concentrations changes were noted for NtZIP5A/B and NtZIP5-like only, but at higher Zn and Cd levels for NtZIP1-like, NtZIP5-like, NtZIP8, NtZIP11, NtIRT1, and NtIRT1-like. NtZIP1, here renamed to NtZIP5B, was cloned and characterized. We found that it was a zinc deficiency-inducible transporter involved in zinc and cadmium uptake from the soil solution primarily by the middle root part. CONCLUSIONS We conclude that regulation of the longitudinal distribution of Zn and Cd is highly specific, and that the apical, middle and basal root parts play distinct roles in Zn/Cd status-dependent control of metal translocation efficiency to shoots, including the stimulation of Zn translocation to shoots in the presence of Cd. These results provide new insight into the root part-specific unique role of NtZIP5B and other ZIP genes in the longitudinal distribution of zinc and cadmium and their contribution to the regulation of root-to-shoot translocation.
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Affiliation(s)
- Małgorzata Palusińska
- University of Warsaw, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, Miecznikowa Street 1, 02-096 Warszawa, Poland
| | - Anna Barabasz
- University of Warsaw, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, Miecznikowa Street 1, 02-096 Warszawa, Poland
| | - Katarzyna Kozak
- University of Warsaw, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, Miecznikowa Street 1, 02-096 Warszawa, Poland
| | - Anna Papierniak
- University of Warsaw, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, Miecznikowa Street 1, 02-096 Warszawa, Poland
| | - Karolina Maślińska
- University of Warsaw, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, Miecznikowa Street 1, 02-096 Warszawa, Poland
| | - Danuta Maria Antosiewicz
- University of Warsaw, Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, Miecznikowa Street 1, 02-096 Warszawa, Poland
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27
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Pita-Barbosa A, Ricachenevsky FK, Wilson M, Dottorini T, Salt DE. Transcriptional plasticity buffers genetic variation in zinc homeostasis. Sci Rep 2019; 9:19482. [PMID: 31862901 PMCID: PMC6925235 DOI: 10.1038/s41598-019-55736-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/02/2019] [Indexed: 11/08/2022] Open
Abstract
In roots of Arabidopsis thaliana, Zn can be either loaded into the xylem for translocation to the shoot or stored in vacuoles. Vacuolar storage is achieved through the action of the Zn/Cd transporter HMA3 (Heavy Metal Atpase 3). The Col-0 accession has an HMA3 loss-of-function allele resulting in high shoot Cd, when compared to accession CSHL-5 which has a functional allele and low shoot Cd. Interestingly, both Col-0 and CSHL-5 have similar shoot Zn concentrations. We hypothesize that plants sense changes in cytosolic Zn that are due to variation in HMA3 function, and respond by altering expression of genes related to Zn uptake, transport and compartmentalisation, in order to maintain Zn homeostasis. The expression level of genes known to be involved in Zn homeostasis were quantified in both wild-type Col-0 and Col-0::HMA3CSHL-5 plants transformed with the functional CSHL-5 allele of HMA3. We observed significant positive correlations between expression of HMA3 and of genes known to be involved in Zn homeostasis, including ZIP3, ZIP4, MTP1, and bZIP19. The results support our hypothesis that alteration in the level of function of HMA3 is counterbalanced by the fine regulation of the Zn homeostasis gene network in roots of A. thaliana.
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Affiliation(s)
- Alice Pita-Barbosa
- Center for Coastal, Limnology and Marine Studies, Federal University of Rio Grande do Sul, Litoral Norte Campus, Imbé, RS, 95625-000, Brazil
- Future Food Beacon of Excellence and the School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK
| | - Felipe K Ricachenevsky
- Biology Department, Center of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | - Michael Wilson
- Future Food Beacon of Excellence and the School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK
| | - Tania Dottorini
- School of Veterinary Medicine and Science, University of Nottingham, Nottingham, LE12 5RD, UK
| | - David E Salt
- Future Food Beacon of Excellence and the School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK.
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28
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Zeng H, Zhang X, Ding M, Zhang X, Zhu Y. Transcriptome profiles of soybean leaves and roots in response to zinc deficiency. PHYSIOLOGIA PLANTARUM 2019; 167:330-351. [PMID: 30536844 DOI: 10.1111/ppl.12894] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 11/25/2018] [Accepted: 12/03/2018] [Indexed: 05/27/2023]
Abstract
Zinc (Zn) deficiency is a widespread agricultural problem in arable soils of the whole world. However, the molecular mechanisms underlying Zn-deficiency response are largely unknown. Here, we analyzed the transcriptomic profilings of soybean leaves and roots in response to Zn deficiency through Illumina's high-throughput RNA sequencing in order to understand the molecular basis of Zn-deficiency response in the plants. A total of 614 and 1011 gene loci were found to be differentially expressed in leaves and roots, respectively, and 88 loci were commonly found in both leaves and roots. Twelve differentially expressed genes (DEGs) were randomly selected for validation by quantitative reverse transcription polymerase chain reaction, and their fold changes were similar to those of RNA-seq. Gene ontology enrichment analysis showed that ion transport, nicotianamine (NA) biosynthetic process and queuosine biosynthetic process were enriched in the upregulated genes, while oxidation-reduction process and defense response were enriched in the downregulated genes. Among the DEGs, 20 DEGs are potentially involved in Zn homeostasis, including seven ZRT, IRT-related protein (ZIP) transporter genes, three NA synthase genes, and seven metallothionein genes; 40 DEGs are possibly involved in diverse hormonal signals such as auxin, cytokinin, ethylene and gibberellin; nine DEGs are putatively involved in calcium signaling; 85 DEGs are putative transcription factor genes. Nine DEGs were found to contain zinc-deficiency-response element in their promoter regions. These results could provide comprehensive insights into the soybean response to Zn deficiency and will be helpful for further elucidation of the molecular mechanisms of Zn-deficiency response and Zn-deficiency tolerance in plants.
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Affiliation(s)
- Houqing Zeng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Xin Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ming Ding
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiajun Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Yiyong Zhu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
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29
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Gao S, Xiao Y, Xu F, Gao X, Cao S, Zhang F, Wang G, Sanders D, Chu C. Cytokinin-dependent regulatory module underlies the maintenance of zinc nutrition in rice. THE NEW PHYTOLOGIST 2019; 224:202-215. [PMID: 31131881 DOI: 10.1111/nph.15962] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 05/21/2019] [Indexed: 05/06/2023]
Abstract
Zinc (Zn) deficiency is a critical problem in human nutrition. Rice is the main source of calories for nearly half the world's population but has the shortcoming, from a nutritional perspective, of being low in Zn and other essential nutrients. Here we performed analyses with cytokinin-related mutants and transgenic lines to provide unequivocal evidence that cytokinins have a key role in controlling Zn status in plants. Transporters responsible for Zn uptake and chelators for the internal transport of Zn were strictly controlled by cytokinins. Moreover, cytokinin metabolism was regulated in a highly dynamic way in response to Zn status, which allows rice to adapt to heterogeneous Zn availability. Subsequently, fine-tuning of cytokinin metabolism by root-specific expression of a cytokinin degradation enzyme was able to improve both Zn nutrient and yield traits. Importantly, X-ray fluorescence imaging revealed that the increased Zn was broadly distributed from the aleurone layer to the inner endosperm. These findings show that metabolic control of cytokinin could provide the key to breeding Zn-enriched rice.
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Affiliation(s)
- Shaopei Gao
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Yunhua Xiao
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Fan Xu
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Xiaokai Gao
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Shouyun Cao
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Fengxia Zhang
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Guodong Wang
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
| | - Dale Sanders
- Department of Metabolic Biology, John Innes Centre, Norwich, NR4 7UH, UK
| | - Chengcai Chu
- State Key Laboratory of Plant Genomics and CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, the Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China
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30
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Zlobin IE, Kartashov AV, Nosov AV, Fomenkov AA, Kuznetsov VV. The labile zinc pool in plant cells. FUNCTIONAL PLANT BIOLOGY : FPB 2019; 46:796-805. [PMID: 31072451 DOI: 10.1071/fp19064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
Zinc is the most abundant and important transition metal in plants; however, the dynamic aspects of zinc homeostasis in plant cells are poorly understood. In this study we explored the pool of labile exchangeable zinc complexes in plant cells, and the potential influence of changes in intracellular zinc availability on cellular physiology. Work was performed on cultivated cell extracts of Arabidopsis thaliana (L.) Heynh. and Thellungiella salsuginea (Pall.) O.E. Schulz grown under control (3.48 µM Zn2+), 10-fold Zn excess or Zn starvation conditions. The free and labile Zn contents in the extracts were then determined by fluorimetric titration. We observed for the first time that plant cells contain micromolar concentrations of labile zinc complexes that account for a low percentage of the total zinc content. Labile zinc is mainly protein bound. Zn starvation inhibits cell proliferation and leads to the disappearance of the labile zinc pool, whereas Zn excess drastically increases the labile zinc pool. Free Zn2+ is buffered at picomolar concentrations in the intracellular milieu, and the increase in free Zn2+ concentrations to low nanomolar values clearly modulates enzyme activity by direct reversible binding. Such increases in free Zn2+ can be achieved by the substantial influx of additional zinc or by the oxidation of zinc-binding thiols. The observed features of the labile zinc pool in plant cells suggest it has a role in intracellular zinc trafficking and zinc signalling.
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Affiliation(s)
- Ilya E Zlobin
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia; and Corresponding author.
| | - Alexander V Kartashov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Alexander V Nosov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Artem A Fomenkov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Vladimir V Kuznetsov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
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31
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Dmitriev AA, Krasnov GS, Rozhmina TA, Zyablitsin AV, Snezhkina AV, Fedorova MS, Pushkova EN, Kezimana P, Novakovskiy RO, Povkhova LV, Smirnova MI, Muravenko OV, Bolsheva NL, Kudryavtseva AV, Melnikova NV. Flax (Linum usitatissimum L.) response to non-optimal soil acidity and zinc deficiency. BMC PLANT BIOLOGY 2019; 19:54. [PMID: 30813909 PMCID: PMC6393972 DOI: 10.1186/s12870-019-1641-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
BACKGROUND Flax (Linum usitatissimum L.) is grown for fiber and seed production. Unfavorable environments, such as nutrient deficiency and non-optimal soil acidity, decrease the quantity and quality of yield. Cultivation of tolerant to stress varieties can significantly reduce the crop losses. Understanding the mechanisms of flax response to the stresses and identification of resistance gene candidates will help in breeding of improved cultivars. In the present work, the response of flax plants to increased pH level and zinc (Zn) deficiency was studied. RESULTS We performed high-throughput transcriptome sequencing of two flax cultivars with diverse tolerance to increased pH level and Zn deficiency: Norlin (tolerant) and Mogilevsky (sensitive). Sixteen cDNA libraries were created from flax plants grown under control conditions, increased pH level, Zn deficiency, and both stresses simultaneously, and about 35 million reads were obtained for each experiment type. Unfavorable pH resulted in significantly stronger gene expression alterations compared to Zn deficiency. Ion homeostasis, oxidoreductase activity, cell wall, and response to stress Gene Ontology terms were the most affected by unfavorable pH and Zn deficiency both in tolerant and sensitive flax cultivars. Upregulation of genes encoding metal transporters was identified under increased pH level, Zn deficiency, and both stresses simultaneously. Under Zn deficiency, only in tolerant cultivar Norlin, we revealed the induction of several photosynthesis-related genes and, in this way, this tolerant genotype could overcome unfavorable effects of reduced Zn content. CONCLUSIONS We identified genes with expression alterations in flax under non-optimal soil acidity and Zn deficiency based on high-throughput sequencing data. These genes are involved in diverse processes, including ion transport, cell wall biogenesis, and photosynthesis, and could play an important role in flax response to the studied stresses. Moreover, genes with distinct expression changes between examined tolerant and sensitive genotypes could determine the mechanisms of flax tolerance to non-optimal soil acidity and Zn deficiency.
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Affiliation(s)
- Alexey A. Dmitriev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - George S. Krasnov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Tatiana A. Rozhmina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
- All-Russian Research Institute for Flax, Torzhok, Russia
| | | | | | - Maria S. Fedorova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Elena N. Pushkova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Parfait Kezimana
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Roman O. Novakovskiy
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Liubov V. Povkhova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | | | - Olga V. Muravenko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Nadezhda L. Bolsheva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Anna V. Kudryavtseva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Nataliya V. Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
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32
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Qiao K, Wang F, Liang S, Wang H, Hu Z, Chai T. Improved Cd, Zn and Mn tolerance and reduced Cd accumulation in grains with wheat-based cell number regulator TaCNR2. Sci Rep 2019; 9:870. [PMID: 30696904 PMCID: PMC6351596 DOI: 10.1038/s41598-018-37352-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 11/07/2018] [Indexed: 02/01/2023] Open
Abstract
Soil microelement deficiency and heavy metal contamination affects plant growth and development, but improving trace element uptake and reducing heavy metal accumulation by genetic breeding can help alleviate this. Cell number regulator 2 (TaCNR2) from common wheat (Triticum aestivum) are similar to plant cadmium resistance proteins, involved with regulating heavy metal translocation. Our aim was to understand the effect of TaCNR2 on heavy metal tolerance and translocation. In this study, real-time quantitative PCR indicated TaCNR2 expression in the wheat seedlings increased under Cd, Zn and Mn treatment. Overexpression of TaCNR2 in Arabidopsis and rice enhanced its stress tolerance to Cd, Zn and Mn, and overexpression in rice improved Cd, Zn and Mn translocation from roots to shoots. The grain husks in overexpressed rice had higher Cd, Zn and Mn concentrations, but the brown rice accumulated less Cd but higher Mn than wild rice. The results showed that TaCNR2 can transport heavy metal ions. Thus, this study provides a novel gene resource for increasing nutrition uptake and reducing toxic metal accumulation in crops.
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Affiliation(s)
- Kun Qiao
- College of Life Science, University of Chinese Academy of Sciences, Beijing, China.,Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Science and Oceanography, Shenzhen University, Shenzhen, China
| | - Fanhong Wang
- College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Shuang Liang
- College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Hong Wang
- College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Guangdong Engineering Research Center for Marine Algal Biotechnology, College of Life Science and Oceanography, Shenzhen University, Shenzhen, China.
| | - Tuanyao Chai
- College of Life Science, University of Chinese Academy of Sciences, Beijing, China. .,Southeast Asia Biodiversity Research Institute, Chinese Academy of Science, Yezin, Nay Pyi Taw, 05282, Myanmar. .,The Innovative Academy of Seed Design (INASEED), Chinese Academy of Sciences, Beijing, China.
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Gorbatov SA, Kozlov MA, Zlobin IE, Kartashov AV, Zavarzin IV, Volkova YA. Highly selective BODIPY-based fluorescent probe for Zn2+ imaging in plant roots. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.11.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jakubek M, Kejík Z, Antonyová V, Kaplánek R, Sýkora D, Hromádka R, Vyhlídalová K, Martásek P, Král V. Benzoisothiazole-1,1-dioxide-based synthetic receptor for zinc ion recognition in aqueous medium and its interaction with nucleic acids. Supramol Chem 2018. [DOI: 10.1080/10610278.2018.1523409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Milan Jakubek
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
- BIOCEV, First Faculty of Medicine, Charles University, Czech Republic
| | - Zdeněk Kejík
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague Ke Karlovu, Prague Czech Republic
| | | | - Robert Kaplánek
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
- BIOCEV, First Faculty of Medicine, Charles University, Czech Republic
| | - David Sýkora
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
| | - Róbert Hromádka
- BIOCEV, First Faculty of Medicine, Charles University, Czech Republic
- C2P s.r.o. Jungmannova 101, 503 51 Chlumec nad Cidlinou, Czech Republic
| | - Kateřina Vyhlídalová
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
| | - Pavel Martásek
- BIOCEV, First Faculty of Medicine, Charles University, Czech Republic
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague Ke Karlovu, Prague Czech Republic
| | - Vladimír Král
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republic
- BIOCEV, First Faculty of Medicine, Charles University, Czech Republic
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da Rosa Couto R, Comin JJ, Souza M, Ricachenevsky FK, Lana MA, Gatiboni LC, Ceretta CA, Brunetto G. Should Heavy Metals Be Monitored in Foods Derived From Soils Fertilized With Animal Waste? FRONTIERS IN PLANT SCIENCE 2018; 9:732. [PMID: 29922312 PMCID: PMC5996043 DOI: 10.3389/fpls.2018.00732] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 05/15/2018] [Indexed: 05/15/2023]
Affiliation(s)
| | - Jucinei J. Comin
- Agroecossistemas, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Monique Souza
- Agroecossistemas, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Felipe K. Ricachenevsky
- Departamento de Biologia, Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
- Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Marcos A. Lana
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
- SUSLAND, Leibniz Centre for Agricultural Landscape Research, Müncheberg, Germany
| | - Luciano C. Gatiboni
- Ciência do Solo, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Lages, Brazil
| | - Carlos A. Ceretta
- Ciência do Solo, Departamento de Solos, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Gustavo Brunetto
- Ciência do Solo, Departamento de Solos, Universidade Federal de Santa Maria, Santa Maria, Brazil
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Neeraja CN, Kulkarni KS, Madhu Babu P, Sanjeeva Rao D, Surekha K, Ravindra Babu V. Transporter genes identified in landraces associated with high zinc in polished rice through panicle transcriptome for biofortification. PLoS One 2018; 13:e0192362. [PMID: 29394277 PMCID: PMC5796704 DOI: 10.1371/journal.pone.0192362] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 01/21/2018] [Indexed: 11/27/2022] Open
Abstract
Polished rice is poor source of micronutrients, however wide genotypic variability exists for zinc uptake and remobilization and zinc content in brown and polished grains in rice. Two landraces (Chittimutyalu and Kala Jeera Joha) and one popular improved variety (BPT 5204) were grown under zinc sufficient soil and their analyses showed high zinc in straw of improved variety, but high zinc in polished rice in landraces suggesting better translocation ability of zinc into the grain in landraces. Transcriptome analyses of the panicle tissue showed 41182 novel transcripts across three samples. Out of 1011 differentially expressed exclusive transcripts by two landraces, 311 were up regulated and 534 were down regulated. Phosphate transporter-exporter (PHO), proton-coupled peptide transporters (POT) and vacuolar iron transporter (VIT) showed enhanced and significant differential expression in landraces. Out of 24 genes subjected to quantitative real time analyses for confirmation, eight genes showed significant differential expression in landraces. Through mapping, six rice microsatellite markers spanning the genomic regions of six differentially expressed genes were validated for their association with zinc in brown and polished rice using recombinant inbred lines (RIL) of BPT 5204/Chittimutyalu. Thus, this study reports repertoire of genes associated with high zinc in polished rice and a proof concept for deployment of transcriptome information for validation in mapping population and its use in marker assisted selection for biofortification of rice with zinc.
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Affiliation(s)
- C. N. Neeraja
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - Kalyani S. Kulkarni
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - P. Madhu Babu
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - D. Sanjeeva Rao
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - K. Surekha
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - V Ravindra Babu
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
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Fikirdeşici Ergen Ş, Üçüncü Tunca E. Nanotoxicity modelling and removal efficiencies of ZnONP. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:16-26. [PMID: 28436678 DOI: 10.1080/15226514.2017.1319324] [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] [Indexed: 06/07/2023]
Abstract
In this paper the aim is to investigate the toxic effect of zinc oxide nanoparticles (ZnONPs) and is to analyze the removal of ZnONP in aqueous medium by the consortium consisted of Daphnia magna and Lemna minor. Three separate test groups are formed: L. minor ([Formula: see text]), D. magna ([Formula: see text]), and L. minor + D. magna ([Formula: see text]) and all these test groups are exposed to three different nanoparticle concentrations ([Formula: see text]). Time-dependent, concentration-dependent, and group-dependent removal efficiencies are statistically compared by non-parametric Mann-Whitney U test and statistically significant differences are observed. The optimum removal values are observed at the highest concentration [Formula: see text] for [Formula: see text], [Formula: see text] for [Formula: see text]and [Formula: see text] for [Formula: see text] and realized at [Formula: see text] for all test groups [Formula: see text]. There is no statistically significant differences in removal at low concentrations [Formula: see text] in terms of groups but [Formula: see text] test groups are more efficient than [Formula: see text] test groups in removal of ZnONP, at [Formula: see text] concentration. Regression analysis is also performed for all prediction models. Different models are tested and it is seen that cubic models show the highest predicted values (R2). In toxicity models, R2 values are obtained at (0.892, 0.997) interval. A simple solution-phase method is used to synthesize ZnO nanoparticles. Dynamic Light Scattering and X-Ray Diffraction (XRD) are used to detect the particle size of synthesized ZnO nanoparticles.
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Affiliation(s)
| | - Esra Üçüncü Tunca
- b Faculty of Marine Sciences, Ordu University , Fatsa , Ordu , Turkey
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Ricachenevsky FK, de Araújo Junior AT, Fett JP, Sperotto RA. You Shall Not Pass: Root Vacuoles as a Symplastic Checkpoint for Metal Translocation to Shoots and Possible Application to Grain Nutritional Quality. FRONTIERS IN PLANT SCIENCE 2018; 9:412. [PMID: 29666628 PMCID: PMC5891630 DOI: 10.3389/fpls.2018.00412] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 03/14/2018] [Indexed: 05/10/2023]
Abstract
Plant nutrient uptake is performed mostly by roots, which have to acquire nutrients while avoiding excessive amounts of essential and toxic elements. Apoplastic barriers such as the casparian strip and suberin deposition block free diffusion from the rhizosphere into the xylem, making selective plasma membrane transporters able to control elemental influx into the root symplast, efflux into the xylem and therefore shoot translocation. Additionally, transporters localized to the tonoplast of root cells have been demonstrated to regulate the shoot ionome, and may be important for seed elemental translocation. Here we review the role of vacuolar transporters in the detoxification of elements such as zinc (Zn), manganese (Mn), cadmium (Cd), cobalt (Co) and nickel (Ni) that are co-transported with iron (Fe) during the Fe deficiency response in Arabidopsis thaliana, and the possible conservation of this mechanism in rice (Oryza sativa). We also discuss the evidence that vacuolar transporters are linked to natural variation in shoot ionome in Arabidopsis and rice, indicating that vacuolar storage might be amenable to genetic engineering without strong phenotypical changes. Finally, we discuss the possible use of root's vacuolar transporters to increase the nutritional quality of crop grains.
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Affiliation(s)
- Felipe K. Ricachenevsky
- Departamento de Biologia, Programa de Pós-Graduação em Agrobiologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- *Correspondence: Felipe K. Ricachenevsky,
| | - Artur T. de Araújo Junior
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Janette P. Fett
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Raul A. Sperotto
- Centro de Ciências Biológicas e da Saúde, Programa de Pós-Graduação em Biotecnologia, Universidade do Vale do Taquari – UNIVATES, Lajeado, Brazil
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Imam HT, Blindauer CA. Differential reactivity of closely related zinc(II)-binding metallothioneins from the plant Arabidopsis thaliana. J Biol Inorg Chem 2018; 23:137-154. [PMID: 29218630 PMCID: PMC5756572 DOI: 10.1007/s00775-017-1516-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 11/12/2017] [Indexed: 12/04/2022]
Abstract
The dynamics of metal binding to and transfer from metalloproteins involved in metal homeostasis are important for understanding cellular distribution of metal ions. The dicotyledonous plant Arabidopsis thaliana has two type 4 seed-specific metallothionein homologues, MT4a and MT4b, with likely roles in zinc(II) homeostasis. These two metallothioneins are 84% identical, with full conservation of all metal-binding cysteine and histidine residues. Yet, differences in their spatial and temporal expression patterns suggested divergence in their biological roles. To investigate whether biological functions are reflected in molecular properties, we compare aspects of zinc(II)-binding dynamics of full-length MT4a and MT4b, namely the pH dependence of zinc(II) binding and protein folding, and zinc(II) transfer to the chelator EDTA. UV-Vis and NMR spectroscopies as well as native electrospray ionisation mass spectrometry consistently showed that transfer from Zn6MT4a is considerably faster than from Zn6MT4b, with pseudo-first-order rate constants for the fastest observed step of k obs = 2.8 × 10-4 s-1 (MT4b) and k obs = 7.5 × 10-4 s-1 (MT4a) (5 µM protein, 500 µM EDTA, 25 mM Tris buffer, pH 7.33, 298 K). 2D heteronuclear NMR experiments allowed locating the most labile zinc(II) ions in domain II for both proteins. 3D homology models suggest that reactivity of this domain is governed by the local environment around the mononuclear Cys2His2 site that is unique to type 4 MTs. Non-conservative amino acid substitutions in this region affect local electrostatics as well as whole-domain dynamics, with both effects rendering zinc(II) ions bound to MT4a more reactive in metal transfer reactions. Therefore, domain II of MT4a is well suited to rapidly release its bound zinc(II) ions, in broad agreement with a previously suggested role of MT4a in zinc(II) transport and delivery to other proteins.
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Affiliation(s)
- Hasan T Imam
- Department of Chemistry, The University of Warwick, Coventry, CV4 7AL, UK
- School of Chemistry, University of St. Andrews, St. Andrews, KY16 9ST, UK
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Ricachenevsky FK, Punshon T, Lee S, Oliveira BHN, Trenz TS, Maraschin FDS, Hindt MN, Danku J, Salt DE, Fett JP, Guerinot ML. Elemental Profiling of Rice FOX Lines Leads to Characterization of a New Zn Plasma Membrane Transporter, OsZIP7. FRONTIERS IN PLANT SCIENCE 2018; 9:865. [PMID: 30018622 PMCID: PMC6037872 DOI: 10.3389/fpls.2018.00865] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 06/04/2018] [Indexed: 05/07/2023]
Abstract
Iron (Fe) and zinc (Zn) are essential micronutrients required for proper development in both humans and plants. Rice (Oryza sativa L.) grains are the staple food for nearly half of the world's population, but a poor source of metals such as Fe and Zn. Populations that rely on milled cereals are especially prone to Fe and Zn deficiencies, the most prevalent nutritional deficiencies in humans. Biofortification is a cost-effective solution for improvement of the nutritional quality of crops. However, a better understanding of the mechanisms underlying grain accumulation of mineral nutrients is required before this approach can achieve its full potential. Characterization of gene function is more time-consuming in crops than in model species such as Arabidopsis thaliana. Aiming to more quickly characterize rice genes related to metal homeostasis, we applied the concept of high throughput elemental profiling (ionomics) to Arabidopsis lines heterologously expressing rice cDNAs driven by the 35S promoter, named FOX (Full Length Over-eXpressor) lines. We screened lines expressing candidate genes that could be used in the development of biofortified grain. Among the most promising candidates, we identified two lines ovexpressing the metal cation transporter OsZIP7. OsZIP7 expression in Arabidopsis resulted in a 25% increase in shoot Zn concentrations compared to non-transformed plants. We further characterized OsZIP7 and showed that it is localized to the plasma membrane and is able to complement Zn transport defective (but not Fe defective) yeast mutants. Interestingly, we showed that OsZIP7 does not transport Cd, which is commonly transported by ZIP proteins. Importantly, OsZIP7-expressing lines have increased Zn concentrations in their seeds. Our results indicate that OsZIP7 is a good candidate for developing Zn biofortified rice. Moreover, we showed the use of heterologous expression of genes from crops in A. thaliana as a fast method for characterization of crop genes related to the ionome and potentially useful in biofortification strategies.
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Affiliation(s)
- Felipe K. Ricachenevsky
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
- Department of Biological Sciences, Dartmouth College, Hanover, NH, United States
- *Correspondence: Felipe K. Ricachenevsky,
| | - Tracy Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, NH, United States
| | - Sichul Lee
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, South Korea
| | - Ben Hur N. Oliveira
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Thomaz S. Trenz
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Maria N. Hindt
- Department of Biological Sciences, Dartmouth College, Hanover, NH, United States
| | - John Danku
- School of Biosciences, University of Nottingham, Loughborough, United Kingdom
| | - David E. Salt
- School of Biosciences, University of Nottingham, Loughborough, United Kingdom
| | - Janette P. Fett
- Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Mary Lou Guerinot
- Department of Biological Sciences, Dartmouth College, Hanover, NH, United States
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Barabasz A, Palusińska M, Papierniak A, Kendziorek M, Kozak K, Williams LE, Antosiewicz DM. Functional Analysis of NtZIP4B and Zn Status-Dependent Expression Pattern of Tobacco ZIP Genes. FRONTIERS IN PLANT SCIENCE 2018; 9:1984. [PMID: 30687374 PMCID: PMC6335357 DOI: 10.3389/fpls.2018.01984] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/20/2018] [Indexed: 05/06/2023]
Abstract
Tobacco is frequently considered as a plant useful for phytoremediation of metal-contaminated soil, despite the mechanisms for regulation of uptake and accumulation being largely unknown. Here we cloned and characterized a new tobacco Zn and Cd transporter NtZIP4B from the ZIP family (ZRT-IRT-Like proteins). It complemented the Zn-uptake defective yeast mutant zrt1zrt2, and rendered the wild type DY1457 yeast more sensitive to Cd. Bioinformatic analysis and transient expression of the NtZIP4B-GFP fusion protein in tobacco leaves indicated its localization to the plasma membrane. Real-time q-PCR based analysis showed that it is expressed in all vegetative organs with the highest level in leaves. The Zn status determined transcript abundance; NtZIP4B was upregulated by Zn-deficiency and downregulated by Zn excess. At the tissue level, in roots NtZIP4B is expressed in the vasculature of the middle part of the roots and in surrounding tissues including the root epidermis; in leaves primarily in the vasculature. Bioinformatic analysis identified two copies of ZIP4 in tobacco, NtZIP4A and NtZIP4B with 97.57% homology at the amino acid level, with the same expression pattern for both, indicating a high degree of functional redundancy. Moreover, the present study provides new insights into the coordinated function of NtZIP1, NtZIP2, NtZIP4, NtZIP5, NtZIP8, NtIRT1, and NtIRT1-like in response to low-to-high Zn status. Leaves were the major site of NtZIP4, NtZIP5, and NtZIP8 expression, and roots for NtZIP1, NtZIP2, NtIRT1, and NtIRT1-like. Contrasting expression level in the apical and basal root parts indicates distinct roles in root-specific processes likely contributing to the regulation of Zn root-to-shoot translocation. In summary, new insight into the role of ZIP genes in Zn homeostasis pointing to their overlapping and complementary functions, offers opportunities for strategies to modify Zn and Cd root/shoot partition in tobacco.
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Affiliation(s)
- Anna Barabasz
- Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, Warsaw, Poland
- *Correspondence: Anna Barabasz, Danuta Maria Antosiewicz,
| | - Małgorzata Palusińska
- Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, Warsaw, Poland
| | - Anna Papierniak
- Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, Warsaw, Poland
| | - Maria Kendziorek
- Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, Warsaw, Poland
| | - Katarzyna Kozak
- Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, Warsaw, Poland
| | | | - Danuta Maria Antosiewicz
- Faculty of Biology, Institute of Experimental Plant Biology and Biotechnology, University of Warsaw, Warsaw, Poland
- *Correspondence: Anna Barabasz, Danuta Maria Antosiewicz,
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Papierniak A, Kozak K, Kendziorek M, Barabasz A, Palusińska M, Tiuryn J, Paterczyk B, Williams LE, Antosiewicz DM. Contribution of NtZIP1-Like to the Regulation of Zn Homeostasis. FRONTIERS IN PLANT SCIENCE 2018; 9:185. [PMID: 29503658 PMCID: PMC5820362 DOI: 10.3389/fpls.2018.00185] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 01/31/2018] [Indexed: 05/20/2023]
Abstract
Tobacco has frequently been suggested as a candidate plant species for use in phytoremediation of metal contaminated soil but knowledge on the regulation of its metal-homeostasis is still in the infancy. To identify new tobacco metal transport genes that are involved in Zn homeostasis a bioinformatics study using the tobacco genome information together with expression analysis was performed. Ten new tobacco metal transport genes from the ZIP, NRAMP, MTP, and MRP/ABCC families were identified with expression levels in leaves that were modified by exposure to Zn excess. Following exposure to high Zn there was upregulation of NtZIP11-like, NtNRAMP3, three isoforms of NtMTP2, three MRP/ABCC genes (NtMRP5-like, NtMRP10-like, and NtMRP14 like) and downregulation of NtZIP1-like and NtZIP4. This suggests their involvement in several processes governing the response to Zn-related stress and in the efficiency of Zn accumulation (uptake, sequestration, and redistribution). Further detailed analysis of NtZIP1-like provided evidence that it is localized at the plasma membrane and is involved in Zn but not Fe and Cd transport. NtZIP1-like is expressed in the roots and shoots, and is regulated developmentally and in a tissue-specific manner. It is highly upregulated by Zn deficiency in the leaves and the root basal region but not in the root apical zone (region of maturation and absorption containing root hairs). Thus NtZIP1-like is unlikely to be responsible for Zn uptake by the root apical region but rather in the uptake by root cells within the already mature basal zone. It is downregulated by Zn excess suggesting it is involved in a mechanism to protect the root and leaf cells from accumulating excess Zn.
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Affiliation(s)
- Anna Papierniak
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Katarzyna Kozak
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Maria Kendziorek
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Anna Barabasz
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Małgorzata Palusińska
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Jerzy Tiuryn
- Faculty of Mathematics, Informatics, and Mechanics, University of Warsaw, Warsaw, Poland
| | - Bohdan Paterczyk
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | | | - Danuta M. Antosiewicz
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
- *Correspondence: Danuta M. Antosiewicz,
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Garcia-Oliveira AL, Chander S, Ortiz R, Menkir A, Gedil M. Genetic Basis and Breeding Perspectives of Grain Iron and Zinc Enrichment in Cereals. FRONTIERS IN PLANT SCIENCE 2018; 9:937. [PMID: 30013590 PMCID: PMC6036604 DOI: 10.3389/fpls.2018.00937] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 06/11/2018] [Indexed: 05/18/2023]
Abstract
Micronutrient deficiency, also known as "hidden hunger," is an increasingly serious global challenge to humankind. Among the mineral elements, Fe (Iron) and Zn (Zinc) have earned recognition as micronutrients of outstanding and diverse biological relevance, as well as of clinical importance to global public health. The inherently low Fe and Zn content and poor bioavailability in cereal grains seems to be at the root of these mineral nutrient deficiencies, especially in the developing world where cereal-based diets are the most important sources of calories. The emerging physiological and molecular understanding of the uptake of Fe and Zn and their translocation in cereal grains regrettably also indicates accumulation of other toxic metals, with chemically similar properties, together with these mineral elements. This review article emphasizes breeding to develop bioavailable Fe- and Zn-efficient cereal cultivars to overcome malnutrition while minimizing the risks of toxic metals. We attempt to critically examine the genetic diversity regarding these nutritionally important traits as well as the progress in terms of quantitative genetics. We sought to integrate findings from the rhizosphere with Fe and Zn accumulation in grain, and to discuss the promoters as well as the anti-nutritional factors affecting Fe and Zn bioavailability in humans while restricting the content of toxic metals.
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Affiliation(s)
- Ana Luisa Garcia-Oliveira
- International Institute of Tropical Agriculture, Ibadan, Nigeria
- *Correspondence: Ana Luisa Garcia-Oliveira
| | - Subhash Chander
- Department of Genetics & Plant Breeding, Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
| | - Rodomiro Ortiz
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden
- Rodomiro Ortiz
| | - Abebe Menkir
- International Institute of Tropical Agriculture, Ibadan, Nigeria
| | - Melaku Gedil
- International Institute of Tropical Agriculture, Ibadan, Nigeria
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44
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Menguer PK, Sperotto RA, Ricachenevsky FK. A walk on the wild side: Oryza species as source for rice abiotic stress tolerance. Genet Mol Biol 2017; 40:238-252. [PMID: 28323300 PMCID: PMC5452139 DOI: 10.1590/1678-4685-gmb-2016-0093] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 09/27/2016] [Indexed: 02/07/2023] Open
Abstract
Oryza sativa, the common cultivated rice, is one of the most important crops for human consumption, but production is increasingly threatened by abiotic stresses. Although many efforts have resulted in breeding rice cultivars that are relatively tolerant to their local environments, climate changes and population increase are expected to soon call for new, fast generation of stress tolerant rice germplasm, and current within-species rice diversity might not be enough to overcome such needs. The Oryza genus contains other 23 wild species, with only Oryza glaberrima being also domesticated. Rice domestication was performed with a narrow genetic diversity, and the other Oryza species are a virtually untapped genetic resource for rice stress tolerance improvement. Here we review the origin of domesticated Oryza sativa from wild progenitors, the ecological and genomic diversity of the Oryza genus, and the stress tolerance variation observed for wild Oryza species, including the genetic basis underlying the tolerance mechanisms found. The summary provided here is important to indicate how we should move forward to unlock the full potential of these germplasms for rice improvement.
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Affiliation(s)
- Paloma Koprovski Menguer
- Departamento de Botânica, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Raul Antonio Sperotto
- Setor de Genética e Biologia Molecular do Museu de Ciências Naturais (MCN), Centro de Ciências Biológicas e da Saúde (CCBS), Programa de Pós-Graduação em Biotecnologia (PPGBiotec), Centro Universitário UNIVATES, Lajeado, RS, Brazil
| | - Felipe Klein Ricachenevsky
- Programa de Pós-Graduação em Agrobiologia, Departamento de Biologia, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
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45
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Kühnlenz T, Hofmann C, Uraguchi S, Schmidt H, Schempp S, Weber M, Lahner B, Salt DE, Clemens S. Phytochelatin Synthesis Promotes Leaf Zn Accumulation of Arabidopsis thaliana Plants Grown in Soil with Adequate Zn Supply and is Essential for Survival on Zn-Contaminated Soil. PLANT & CELL PHYSIOLOGY 2016; 57:2342-2352. [PMID: 27694524 DOI: 10.1093/pcp/pcw148] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 08/10/2016] [Indexed: 06/06/2023]
Abstract
Phytochelatin (PC) synthesis is essential for the detoxification of non-essential metals such as cadmium (Cd). In vitro experiments with Arabidopsis thaliana seedlings had indicated a contribution to zinc (Zn) tolerance as well. We addressed the physiological role of PC synthesis in Zn homeostasis of plants under more natural conditions. Growth responses, PC accumulation and leaf ionomes of wild-type and AtPCS1 mutant plants cultivated in different soils representing adequate Zn supply, Zn deficiency and Zn excess were analyzed. Growth on Zn-contaminated soil triggers PC synthesis and is strongly impaired in PC-deficient mutants. In fact, the contribution of AtPCS1 to tolerating Zn excess is comparable with that of the major Zn tolerance factor MTP1. For plants supplied with a normal level of Zn, a significant reduction in leaf Zn accumulation of AtPCS1 mutants was detected. In contrast, AtPCS1 mutants grown under Zn-limited conditions showed wild-type levels of Zn accumulation, suggesting the operation of distinct Zn translocation pathways. Contrasting phenotypes of the tested AtPCS1 mutant alleles upon growth in Zn- or Cd-contaminated soil indicated differential activation of PC synthesis by these metals. Experiments with truncated versions identified a part of the AtPCS1 protein required for the activation by Zn but not by Cd.
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Affiliation(s)
- Tanja Kühnlenz
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440 Bayreuth, Germany
| | - Christian Hofmann
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440 Bayreuth, Germany
| | - Shimpei Uraguchi
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440 Bayreuth, Germany
- Present address: Department of Public Health, School of Pharmacy, Kitasato University, Tokyo, Japan
| | - Holger Schmidt
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440 Bayreuth, Germany
| | - Stefanie Schempp
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440 Bayreuth, Germany
| | - Michael Weber
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440 Bayreuth, Germany
| | - Brett Lahner
- Purdue University, Horticulture and Landscape Architecture, West Lafayette, IN, USA
| | - David E Salt
- Purdue University, Horticulture and Landscape Architecture, West Lafayette, IN, USA
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, UK
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440 Bayreuth, Germany stephan.clemens@uni-bayreuth
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46
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Meyer ST, Castro SR, Fernandes MM, Soares AC, de Souza Freitas GA, Ribeiro E. Heavy-metal-contaminated industrial soil: Uptake assessment in native plant species from Brazilian Cerrado. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2016; 18:832-838. [PMID: 26852633 DOI: 10.1080/15226514.2016.1146224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Plants of the Cerrado have shown some potential for restoration and/or phytoremediation projects due to their ability to grow in and tolerate acidic soils rich in metals. The aim of this study is to evaluate the tolerance and accumulation of metals (Cd, Cu, Pb, and Zn) in five native tree species of the Brazilian Cerrado (Copaifera langsdorffii, Eugenia dysenterica, Inga laurina, Cedrela fissilis, Handroanthus impetiginosus) subjected to three experiments with contaminated soils obtained from a zinc processing industry (S1, S2, S3) and control soil (S0). The experimental design was completely randomized (factorial 5 × 4 × 3) and conducted in a greenhouse environment during a 90-day experimentation time. The plant species behavior was assessed by visual symptoms of toxicity, tolerance index (TI), translocation factor (TF), and bioaccumulation factor (BF). C. fissilis has performed as a Zn accumulator by the higher BFs obtained in the experiments, equal to 3.72, 0.88, and 0.41 for S1, S2, and S3 respectively. This species had some ability of uptake control as a defense mechanism in high stress conditions with the best behavior for phytoremediation and high tolerance to contamination. With economical and technical benefits, this study may support a preliminary analysis necessary for using native tree species in environmental projects.
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Affiliation(s)
- Sylvia Therese Meyer
- a SENAI Institute of Technology in Environment/Center for Innovation and Technology SENAI, Campus CETEC Horto Florestal, Belo Horizonte / MG , Brazil
| | - Samuel Rodrigues Castro
- a SENAI Institute of Technology in Environment/Center for Innovation and Technology SENAI, Campus CETEC Horto Florestal, Belo Horizonte / MG , Brazil
| | - Marcus Manoel Fernandes
- a SENAI Institute of Technology in Environment/Center for Innovation and Technology SENAI, Campus CETEC Horto Florestal, Belo Horizonte / MG , Brazil
| | - Aylton Carlos Soares
- a SENAI Institute of Technology in Environment/Center for Innovation and Technology SENAI, Campus CETEC Horto Florestal, Belo Horizonte / MG , Brazil
| | | | - Edvan Ribeiro
- b Environmental Department, Votorantim Metals , Três Marias / MG , Brazil
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Martos S, Gallego B, Cabot C, Llugany M, Barceló J, Poschenrieder C. Zinc triggers signaling mechanisms and defense responses promoting resistance to Alternaria brassicicola in Arabidopsis thaliana. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 249:13-24. [PMID: 27297986 DOI: 10.1016/j.plantsci.2016.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/02/2016] [Accepted: 05/03/2016] [Indexed: 05/24/2023]
Abstract
According to the elemental defense hypothesis the accumulation of trace elements by plants may substitute for organic defenses, while the joint effects hypothesis proposes that trace elements and organic defenses can have additive or synergistic effects against pathogens or herbivores. To evaluate these hypotheses the response of the pathosystem Alternaria brassicicola-Arabidopsis thaliana to control (2μM) and surplus (12μM) Zn was evaluated using the camalexin deficient mutant pad3-1 and mtp1-1, a mutant with impaired Zn vacuolar storage, along with the corresponding wildtypes. In vitro, a 50% inhibition of fungal growth was achieved by 440μM Zn. A. thaliana leaves could accumulate equivalent concentrations without harm. In fact, surplus Zn enhanced the resistance of A. thaliana to fungal attack in Columbia (Col-0), Wassilewskija (WS), and mtp1-1. However, surplus Zn was unable to protect pad3-1 demonstrating that Zn cannot substitute for camalexin, the main organic defense in A. thaliana. High, non phytotoxic leaf Zn concentrations enhanced the resistance to A. brassicicola of A. thaliana genotypes able to produce camalexin. This was mainly due to Zn-induced enhancement of the JA/ETH signaling pathway leading to enhanced PAD3 expression. These results support the joint effects hypothesis and highlight the importance of adequate Zn supply for reinforced pathogen resistance.
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Affiliation(s)
- Soledad Martos
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Berta Gallego
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Catalina Cabot
- Biology Department, Universitat de les Illes Balears, Carretera Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain.
| | - Mercè Llugany
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Juan Barceló
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Charlotte Poschenrieder
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
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48
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Morina F, Jovanović L, Prokić L, Veljović-Jovanović S, Smith JAC. Physiological basis of differential zinc and copper tolerance of Verbascum populations from metal-contaminated and uncontaminated areas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:10005-20. [PMID: 26865485 DOI: 10.1007/s11356-016-6177-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 01/25/2016] [Indexed: 05/20/2023]
Abstract
Metal contamination represents a strong selective pressure favoring tolerant genotypes and leading to differentiation between plant populations. We investigated the adaptive capacity of early-colonizer species of Verbascum recently exposed to Zn- and Cu-contaminated soils (10-20 years). Two Verbascum thapsus L. populations from uncontaminated sites (NMET1, NMET2), one V. thapsus from a zinc-contaminated site (MET1), and a Verbascum lychnitis population from an open-cast copper mine (MET2) were exposed to elevated Zn or Cu in hydroponic culture under glasshouse conditions. MET populations showed considerably higher tolerance to both Zn and Cu than NMET populations as assessed by measurements of growth and net photosynthesis, yet they accumulated higher tissue Zn concentrations in the shoot. Abscisic acid (ABA) concentration increased with Zn and Cu treatment in the NMET populations, which was correlated to stomatal closure, decrease of net photosynthesis, and nutritional imbalance, indicative of interference with xylem loading and divalent-cation homeostasis. At the cellular level, the sensitivity of NMET2 to Zn and Cu was reflected in significant metal-induced ROS accumulation and ion leakage from roots as well as strong induction of peroxidase activity (POD, EC 1.11.1.7), while Zn had no significant effect on ABA concentration and POD activity in MET1. Interestingly, MET2 had constitutively higher root ABA concentration and POD activity. We propose that ABA distribution between shoots and roots could represent an adaptive mechanism for maintaining low ABA levels and unaffected stomatal conductance. The results show that metal tolerance can occur in Verbascum populations after relatively short time of exposure to metal-contaminated soil, indicating their potential use for phytostabilization.
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Affiliation(s)
- Filis Morina
- Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11030, Belgrade, Serbia.
| | | | - Ljiljana Prokić
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade, Serbia
| | - Sonja Veljović-Jovanović
- Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11030, Belgrade, Serbia
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49
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Ricachenevsky FK, Sperotto RA. Into the Wild: Oryza Species as Sources for Enhanced Nutrient Accumulation and Metal Tolerance in Rice. FRONTIERS IN PLANT SCIENCE 2016; 7:974. [PMID: 27446193 PMCID: PMC4925693 DOI: 10.3389/fpls.2016.00974] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 06/20/2016] [Indexed: 05/07/2023]
Affiliation(s)
- Felipe K. Ricachenevsky
- Departamento de Biologia, Programa de Pós-Graduação em Agrobiologia, Universidade Federal de Santa MariaSanta Maria, Brazil
- *Correspondence: Felipe K. Ricachenevsky
| | - Raul A. Sperotto
- Setor de Genética e Biologia Molecular do Museu de Ciências Naturais, Programa de Pós-Graduação em Biotecnologia, Centro de Ciências Biológicas e da Saúde, Centro Universitário UNIVATESLajeado, Brazil
- Raul A. Sperotto
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