1
|
Krämer U. Metal Homeostasis in Land Plants: A Perpetual Balancing Act Beyond the Fulfilment of Metalloproteome Cofactor Demands. ANNUAL REVIEW OF PLANT BIOLOGY 2024; 75:27-65. [PMID: 38277698 DOI: 10.1146/annurev-arplant-070623-105324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
One of life's decisive innovations was to harness the catalytic power of metals for cellular chemistry. With life's expansion, global atmospheric and biogeochemical cycles underwent dramatic changes. Although initially harmful, they permitted the evolution of multicellularity and the colonization of land. In land plants as primary producers, metal homeostasis faces heightened demands, in part because soil is a challenging environment for nutrient balancing. To avoid both nutrient metal limitation and metal toxicity, plants must maintain the homeostasis of metals within tighter limits than the homeostasis of other minerals. This review describes the present model of protein metalation and sketches its transfer from unicellular organisms to land plants as complex multicellular organisms. The inseparable connection between metal and redox homeostasis increasingly draws our attention to more general regulatory roles of metals. Mineral co-option, the use of nutrient or other metals for functions other than nutrition, is an emerging concept beyond that of nutritional immunity.
Collapse
Affiliation(s)
- Ute Krämer
- Molecular Genetics and Physiology of Plants, Ruhr University Bochum, Bochum, Germany;
| |
Collapse
|
2
|
Grosjean N, Blaudez D, Chalot M, Flayac J, Gross EM, Le Jean M. Rare earth elements perturb root architecture and ion homeostasis in Arabidopsis thaliana. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133701. [PMID: 38364576 DOI: 10.1016/j.jhazmat.2024.133701] [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: 07/21/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/18/2024]
Abstract
Rare earth elements (REEs) are crucial elements for current high-technology and renewable energy advances. In addition to their increasing usage and their low recyclability leading to their release into the environment, REEs are also used as crop fertilizers. However, little is known regarding the cellular and molecular effects of REEs in plants, which is crucial for better risk assessment, crop safety and phytoremediation. Here, we analysed the ionome and transcriptomic response of Arabidopsis thaliana exposed to a light (lanthanum, La) and a heavy (ytterbium, Yb) REE. At the transcriptome level, we observed the contribution of ROS and auxin redistribution to the modified root architecture following REE exposure. We found indications for the perturbation of Fe homeostasis by REEs in both roots and leaves of Arabidopsis suggesting competition between REEs and Fe. Furthermore, we propose putative ways of entry of REEs inside cells through transporters of microelements. Finally, similar to REE accumulating species, organic acid homeostasis (e.g. malate and citrate) appears critical as a tolerance mechanism in response to REEs. By combining ionomics and transcriptomics, we elucidated essential patterns of REE uptake and toxicity response of Arabidopsis and provide new hypotheses for a better evaluation of the impact of REEs on plant homeostasis.
Collapse
Affiliation(s)
| | - Damien Blaudez
- Université de Lorraine, CNRS, LIEC, F-54000 Nancy, France
| | - Michel Chalot
- Université de Franche-Comté, CNRS, Chrono-Environnement, F-25000 Montbéliard, France; Université de Lorraine, F-54000 Nancy, France
| | - Justine Flayac
- Université de Lorraine, CNRS, LIEC, F-57000 Metz, France
| | | | - Marie Le Jean
- Université de Lorraine, CNRS, LIEC, F-57000 Metz, France.
| |
Collapse
|
3
|
Liang L, Ze M, Yang J, Xu Q, Du C, Hu X, Dong M, Zou L, Qi T. Physiological and transcriptomic response reveals new insight into manganese tolerance of Celosia argentea Linn. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133079. [PMID: 38029593 DOI: 10.1016/j.jhazmat.2023.133079] [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: 09/27/2023] [Revised: 11/19/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
Celosia argentea is a manganese (Mn) hyperaccumulator with high ornamental value and strong stress resistance. It is important to understand the molecular mechanism of tolerance to heavy metals of hyperaccumulators to improve the efficiency of phytoremediation. In this study, the effects of different Mn concentrations (0, 0.8, 3, and 10 mM) on physiological characteristics and molecular changes were determined. Low concentrations of Mn increased the growth of C. argentea, while high concentrations of Mn suppressed its growth, A concentration up to 3 mM did not affect the growth of C. argentea, and the highest transfer factor (TF) was 6.16. Oxidative damage of different Mn level treatments in C. argentea was verified through relative water content, electrolyte leakage, MDA content, H2O2 content and superoxide contents. With an increase in Mn concentration, the contents of chlorophyll a, chlorophyll b, and carotenoids decreased. Our results indicated that low-concentration manganese treatment can reduce the reactive oxygen burst and MDA, soluble sugar and proline, making C. argentea have strong abiotic stress tolerance. The molecular mechanism of C. argentea after 10 mM Mn treatment was analysed through transcriptome analysis, and differentially expressed genes (DEGs) in these pathways were further verified by qRTPCR. Plantpathogen interactions, plant hormone signal transduction, the MAPK signalling pathway and the phenylpropanoid biosynthesis pathway were important in the response to Mn stress, and the heavy metal-associated isoprenylated plant protein, metal transporter Nramp, and zinc transporter play key roles in the strong ability of C. argentea to tolerate heavy metals. These results suggest that C. argentea exhibits strong manganese tolerance and provide new insight into the molecular mechanisms of plant responses to heavy metal stress.
Collapse
Affiliation(s)
- Liyun Liang
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
| | - Mu Ze
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
| | - Jun Yang
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
| | - Qian Xu
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
| | - Cunmei Du
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
| | - Xiaohong Hu
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
| | - Ming Dong
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China
| | - Lijuan Zou
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China.
| | - Tuo Qi
- Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China.
| |
Collapse
|
4
|
Fuenzalida M, Gómez MI, Ferrada E, Díaz C, Escudero V, González-Guerrero M, Jordana X, Roschzttardtz H. Using an embryo specific promoter to modify iron distribution pattern in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 339:111931. [PMID: 38030036 DOI: 10.1016/j.plantsci.2023.111931] [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: 09/25/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023]
Abstract
Iron is an essential micronutrient for life. During the development of the seed, iron accumulates during embryo maturation. In Arabidopsis thaliana, iron mainly accumulates in the vacuoles of only one cell type, the cell layer that surrounds provasculature in hypocotyl and cotyledons. Iron accumulation pattern in Arabidopsis is an exception in plant phylogeny, most part of the dicot embryos accumulate iron in several cell layers including cortex and, in some cases, even in protodermis. It remains unknown how does iron reach the internal cell layers of the embryo, and in particular, the molecular mechanisms responsible of this process. Here, we use transgenic approaches to modify the iron accumulation pattern in an Arabidopsis model. Using the SDH2-3 embryo-specific promoter, we were able to express VIT1 ectopically in both a wild type background and a mutant vit1 background lacking expression of this vacuolar iron transporter. These manipulations modify the iron distribution pattern in Arabidopsis from one cell layer to several cell layers, including protodermis, cortex cells, and the endodermis. Interestingly, total seed iron content was not modified compared with the wild type, suggesting that iron distribution in embryos is not involved in the control of the total iron amount accumulated in seeds. This experimental model can be used to study the processes involved in iron distribution patterning during embryo maturation and its evolution in dicot plants.
Collapse
Affiliation(s)
- Marlene Fuenzalida
- Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - María Isabel Gómez
- Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Evandro Ferrada
- CeMM-Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Cristóbal Díaz
- Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Viviana Escudero
- Centro de Biotecnología y Genómica de Plantas (UPM-INIA/CSIC), Universidad Politécnica de Madrid, Spain
| | - Manuel González-Guerrero
- Centro de Biotecnología y Genómica de Plantas (UPM-INIA/CSIC), Universidad Politécnica de Madrid, Spain; Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Spain
| | - Xavier Jordana
- Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Hannetz Roschzttardtz
- Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile.
| |
Collapse
|
5
|
Song R, Li Z, Su X, Liang M, Li W, Tang X, Li J, Qiao X. The Malus domestica metal tolerance protein MdMTP11.1 was involved in the detoxification of excess manganese in Arabidopsis thaliana. JOURNAL OF PLANT PHYSIOLOGY 2023; 288:154056. [PMID: 37562313 DOI: 10.1016/j.jplph.2023.154056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/14/2023] [Accepted: 07/20/2023] [Indexed: 08/12/2023]
Abstract
Ion homeostasis is maintained in plant cells by specialized transporters. However, functional studies on Mn transporters in apple trees have not been reported. MdMTP11.1, which encodes a putative Mn-MTP transporter in Malus domestica, was expressed highly in leaves and induced by Mn stress. Subcellular localization analysis of the MdMTP11.1-GFP fusion protein indicated that MdMTP11.1 was targeted to the Golgi. Meanwhile, overexpression of MdMTP11.1 in Arabidopsis thaliana conferred increased resistance to plants under toxic Mn levels, as evidenced by increased biomass of whole plant and length of primary root. Analysis of Mn bioaccumulation indicated that overexpression of MdMTP11.1 effectively reduced the content of Mn in every subcellular component and chemical forms when the plants were subjected with Mn stress. The majority of Mn of action were bound to cell wall and combined with un-dissolved phosphate. Besides, contents of malondialdehyde (MDA), proline and hydrogen peroxide (H2O2) were significantly lower, while content of chlorophyll and activities of CAT, SOD, POD and APX were significantly higher in MdMTP11.1-over-expressing plants compared with that in wild type plants under Mn stress. Taken together, these results suggest that MdMTP11.1 is a Mn specific transporter localized to the Golgi can maintain the phenotype, reduce the Mn accumulation and alleviate damage of oxidative stress, conferring the positive role of Mn tolerance.
Collapse
Affiliation(s)
- Ruoxuan Song
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China; The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China
| | - Zhiyuan Li
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China
| | - Xintong Su
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China
| | - Meixia Liang
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China; The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China
| | - Weihuan Li
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China
| | - Xiaoli Tang
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China; The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China
| | - Jianzhao Li
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China; The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China
| | - Xuqiang Qiao
- College of Agriculture, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China; The Engineering Research Institute of Agriculture and Forestry, Ludong University, 186 Hongqizhong Road, Yantai, Shandong Province, 264025, China.
| |
Collapse
|
6
|
Mai HJ, Baby D, Bauer P. Black sheep, dark horses, and colorful dogs: a review on the current state of the Gene Ontology with respect to iron homeostasis in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2023; 14:1204723. [PMID: 37554559 PMCID: PMC10406446 DOI: 10.3389/fpls.2023.1204723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/04/2023] [Indexed: 08/10/2023]
Abstract
Cellular homeostasis of the micronutrient iron is highly regulated in plants and responsive to nutrition, stress, and developmental signals. Genes for iron management encode metal and other transporters, enzymes synthesizing chelators and reducing substances, transcription factors, and several types of regulators. In transcriptome or proteome datasets, such iron homeostasis-related genes are frequently found to be differentially regulated. A common method to detect whether a specific cellular pathway is affected in the transcriptome data set is to perform Gene Ontology (GO) enrichment analysis. Hence, the GO database is a widely used resource for annotating genes and identifying enriched biological pathways in Arabidopsis thaliana. However, iron homeostasis-related GO terms do not consistently reflect gene associations and levels of evidence in iron homeostasis. Some genes in the existing iron homeostasis GO terms lack direct evidence of involvement in iron homeostasis. In other aspects, the existing GO terms for iron homeostasis are incomplete and do not reflect the known biological functions associated with iron homeostasis. This can lead to potential errors in the automatic annotation and interpretation of GO term enrichment analyses. We suggest that applicable evidence codes be used to add missing genes and their respective ortholog/paralog groups to make the iron homeostasis-related GO terms more complete and reliable. There is a high likelihood of finding new iron homeostasis-relevant members in gene groups and families like the ZIP, ZIF, ZIFL, MTP, OPT, MATE, ABCG, PDR, HMA, and HMP. Hence, we compiled comprehensive lists of genes involved in iron homeostasis that can be used for custom enrichment analysis in transcriptomic or proteomic studies, including genes with direct experimental evidence, those regulated by central transcription factors, and missing members of small gene families or ortholog/paralog groups. As we provide gene annotation and literature alongside, the gene lists can serve multiple computational approaches. In summary, these gene lists provide a valuable resource for researchers studying iron homeostasis in A. thaliana, while they also emphasize the importance of improving the accuracy and comprehensiveness of the Gene Ontology.
Collapse
Affiliation(s)
- Hans-Jörg Mai
- Institute of Botany, Heinrich Heine University, Düsseldorf, Germany
| | - Dibin Baby
- Institute of Botany, Heinrich Heine University, Düsseldorf, Germany
| | - Petra Bauer
- Institute of Botany, Heinrich Heine University, Düsseldorf, Germany
- Heinrich Heine University, Center of Excellence on Plant Sciences (CEPLAS), Düsseldorf, Germany
| |
Collapse
|
7
|
Chen X, Zhao Y, Zhong Y, Chen J, Qi X. Deciphering the functional roles of transporter proteins in subcellular metal transportation of plants. PLANTA 2023; 258:17. [PMID: 37314548 DOI: 10.1007/s00425-023-04170-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023]
Abstract
MAIN CONCLUSION The role of transporters in subcellular metal transport is of great significance for plants in coping with heavy metal stress and maintaining their proper growth and development. Heavy metal toxicity is a serious long-term threat to plant growth and agricultural production, becoming a global environmental concern. Excessive heavy metal accumulation not only damages the biochemical and physiological functions of plants but also causes chronic health hazard to human beings through the food chain. To deal with heavy metal stress, plants have evolved a series of elaborate mechanisms, especially a variety of spatially distributed transporters, to strictly regulate heavy metal uptake and distribution. Deciphering the subcellular role of transporter proteins in controlling metal absorption, transport and separation is of great significance for understanding how plants cope with heavy metal stress and improving their adaptability to environmental changes. Hence, we herein introduce the detrimental effects of excessive common essential and non-essential heavy metals on plant growth, and describe the structural and functional characteristics of transporter family members, with a particular emphasis on their roles in maintaining heavy metal homeostasis in various organelles. Besides, we discuss the potential of controlling transporter gene expression by transgenic approaches in response to heavy metal stress. This review will be valuable to researchers and breeders for enhancing plant tolerance to heavy metal contamination.
Collapse
Affiliation(s)
- Xingqi Chen
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China
| | - Yuanchun Zhao
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China
| | - Yuqing Zhong
- Environmental Monitoring Station of Suzhou City, Suzhou, 215004, China
| | - Jiajia Chen
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China
| | - Xin Qi
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China.
| |
Collapse
|
8
|
Giehl RFH, Flis P, Fuchs J, Gao Y, Salt DE, von Wirén N. Cell type-specific mapping of ion distribution in Arabidopsis thaliana roots. Nat Commun 2023; 14:3351. [PMID: 37311779 DOI: 10.1038/s41467-023-38880-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 05/16/2023] [Indexed: 06/15/2023] Open
Abstract
Cell type-specific mapping of element distribution is critical to fully understand how roots partition nutrients and toxic elements with aboveground parts. In this study, we developed a method that combines fluorescence-activated cell sorting (FACS) with inductively coupled plasma mass spectrometry (ICP-MS) to assess the ionome of different cell populations within Arabidopsis thaliana roots. The method reveals that most elements exhibit a radial concentration gradient increasing from the rhizodermis to inner cell layers, and detected previously unknown ionomic changes resulting from perturbed xylem loading processes. With this approach, we also identify a strong accumulation of manganese in trichoblasts of iron-deficient roots. We demonstrate that confining manganese sequestration in trichoblasts but not in endodermal cells efficiently retains manganese in roots, therefore preventing toxicity in shoots. These results indicate the existence of cell type-specific constraints for efficient metal sequestration in roots. Thus, our approach opens an avenue to investigate element compartmentation and transport pathways in plants.
Collapse
Affiliation(s)
- Ricardo F H Giehl
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) OT Gatersleben, 06466, Seeland, Germany.
| | - Paulina Flis
- Future Food Beacon of Excellence & School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK
| | - Jörg Fuchs
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) OT Gatersleben, 06466, Seeland, Germany
| | - Yiqun Gao
- Future Food Beacon of Excellence & School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK
| | - David E Salt
- Future Food Beacon of Excellence & School of Biosciences, University of Nottingham, Nottingham, LE12 5RD, UK
| | - Nicolaus von Wirén
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) OT Gatersleben, 06466, Seeland, Germany.
| |
Collapse
|
9
|
Farthing EC, Henbest KC, Garcia‐Becerra T, Peaston KA, Williams LE. Dissecting the relative contribution of ECA3 and group 8/9 cation diffusion facilitators to manganese homeostasis in Arabidopsis thaliana. PLANT DIRECT 2023; 7:e495. [PMID: 37228331 PMCID: PMC10202827 DOI: 10.1002/pld3.495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 03/14/2023] [Accepted: 03/27/2023] [Indexed: 05/27/2023]
Abstract
Manganese (Mn) is an essential micronutrient for plant growth but becomes toxic when present in excess. A number of Arabidopsis proteins are involved in Mn transport including ECA3, MTPs, and NRAMPs; however, their relative contributions to Mn homeostasis remain to be demonstrated. A major focus here was to clarify the importance of ECA3 in responding to Mn deficiency and toxicity using a range of mutants. We show that ECA3 localizes to the trans-Golgi and plays a major role in response to Mn deficiency with severe effects seen in eca3 nramp1 nramp2 under low Mn supply. ECA3 plays a minor role in Mn-toxicity tolerance, but only when the cis-Golgi-localized MTP11 is non-functional. We also use mutants and overexpressors to determine the relative contributions of MTP members to Mn homeostasis. The trans-Golgi-localized MTP10 plays a role in Mn-toxicity tolerance, but this is only revealed in mutants when MTP8 and MTP11 are non-functional and when overexpressed in mtp11 mutants. MTP8 and MTP10 confer greater Mn-toxicity resistance to the pmr1 yeast mutant than MTP11, and an important role for the first aspartate in the fifth transmembrane domain DxxxD motif is demonstrated. Overall, new insight into the relative influence of key transporters in Mn homeostasis is provided.
Collapse
Affiliation(s)
- Emily C. Farthing
- School of Biological SciencesUniversity of SouthamptonSouthamptonHampshireUK
| | - Kate C. Henbest
- School of Biological SciencesUniversity of SouthamptonSouthamptonHampshireUK
| | | | - Kerry A. Peaston
- School of Biological SciencesUniversity of SouthamptonSouthamptonHampshireUK
| | | |
Collapse
|
10
|
Alejandro S, Meier B, Hoang MTT, Peiter E. Cation diffusion facilitator proteins of Beta vulgaris reveal diversity of metal handling in dicotyledons. PLANT, CELL & ENVIRONMENT 2023; 46:1629-1652. [PMID: 36698321 DOI: 10.1111/pce.14544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 01/17/2023] [Indexed: 06/17/2023]
Abstract
Manganese (Mn), iron (Fe), and zinc (Zn) are essential for diverse processes in plants, but their availability is often limiting or excessive. Cation diffusion facilitator (CDF) proteins have been implicated in the allocation of those metals in plants, whereby most of our mechanistic understanding has been obtained in Arabidopsis. It is unclear to what extent this can be generalized to other dicots. We characterized all CDFs/metal tolerance proteins of sugar beet (Beta vulgaris spp. vulgaris), which is phylogenetically distant from Arabidopsis. Analysis of subcellular localization, substrate selectivities, and transcriptional regulation upon exposure to metal deficiencies and toxicities revealed unexpected deviations from their Arabidopsis counterparts. Localization and selectivity of some members were modulated by alternative splicing. Notably, unlike in Arabidopsis, Mn- and Zn-sequestrating members were not induced in Fe-deficient roots, pointing to differences in the Fe acquisition machinery. This was supported by low Zn and Mn accumulation under Fe deficiency and a strikingly increased Fe accumulation under Mn and Zn excess, coinciding with an induction of BvIRT1. High Zn load caused a massive upregulation of Zn-BvMTPs. The results suggest that the employment of the CDF toolbox is highly diverse amongst dicots, which questions the general applicability of metal homeostasis models derived from Arabidopsis.
Collapse
Affiliation(s)
- Santiago Alejandro
- Plant Nutrition Laboratory, Faculty of Natural Sciences III, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Bastian Meier
- Plant Nutrition Laboratory, Faculty of Natural Sciences III, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Minh Thi Thanh Hoang
- Plant Nutrition Laboratory, Faculty of Natural Sciences III, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Edgar Peiter
- Plant Nutrition Laboratory, Faculty of Natural Sciences III, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| |
Collapse
|
11
|
Ren ZW, Yang M, McKenna BA, Lian XM, Zhao FJ, Kopittke PM, Lombi E, Wang P. Fast X-ray fluorescence microscopy provides high-throughput phenotyping of element distribution in seeds. PLANT PHYSIOLOGY 2023; 191:1520-1534. [PMID: 36423229 PMCID: PMC10022620 DOI: 10.1093/plphys/kiac534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 11/23/2022] [Indexed: 06/16/2023]
Abstract
The concentration, chemical speciation, and spatial distribution of essential and toxic mineral elements in cereal seeds have important implications for human health. To identify genes responsible for element uptake, translocation, and storage, high-throughput phenotyping methods are needed to visualize element distribution and concentration in seeds. Here, we used X-ray fluorescence microscopy (μ-XRF) as a method for rapid and high-throughput phenotyping of seed libraries and developed an ImageJ-based pipeline to analyze the spatial distribution of elements. Using this method, we nondestructively scanned 4,190 ethyl methanesulfonate (EMS)-mutagenized M1 rice (Oryza sativa) seeds and 533 diverse rice accessions in a genome-wide association study (GWAS) panel to simultaneously measure concentrations and spatial distribution of elements in the embryo, endosperm, and aleurone layer. A total of 692 putative mutants and 65 loci associated with the spatial distribution of elements in rice seed were identified. This powerful method provides a basis for investigating the genetics and molecular mechanisms controlling the accumulation and spatial variations of mineral elements in plant seeds.
Collapse
Affiliation(s)
- Zi-Wen Ren
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Meng Yang
- College of Agriculture, Guangxi University, Nanning, Guangxi 530004, China
| | - Brigid A McKenna
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Xing-Ming Lian
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Fang-Jie Zhao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Peng Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
- Center for Agriculture and Health, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| |
Collapse
|
12
|
Krishna TPA, Ceasar SA, Maharajan T. Biofortification of Crops to Fight Anemia: Role of Vacuolar Iron Transporters. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3583-3598. [PMID: 36802625 DOI: 10.1021/acs.jafc.2c07727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Plant-based foods provide all the crucial nutrients for human health. Among these, iron (Fe) is one of the essential micronutrients for plants and humans. A lack of Fe is a major limiting factor affecting crop quality, production, and human health. There are people who suffer from various health problems due to the low intake of Fe in their plant-based foods. Anemia has become a serious public health issue due to Fe deficiency. Enhancing Fe content in the edible part of food crops is a major thrust area for scientists worldwide. Recent progress in nutrient transporters has provided an opportunity to resolve Fe deficiency or nutritional problems in plants and humans. Understanding the structure, function, and regulation of Fe transporters is essential to address Fe deficiency in plants and to improve Fe content in staple food crops. In this review, we summarized the role of Fe transporter family members in the uptake, cellular and intercellular movement, and long-distance transport of Fe in plants. We draw insights into the role of vacuolar membrane transporters in the crop for Fe biofortification. We also provide structural and functional insights into cereal crops' vacuolar iron transporters (VITs). This review will help highlight the importance of VITs for improving the Fe biofortification of crops and alleviating Fe deficiency in humans.
Collapse
Affiliation(s)
| | - Stanislaus Antony Ceasar
- Division of Plant Molecular Biology and Biotechnology, Department of Biosciences, Rajagiri College of Social Sciences, Kochi 683104, Kerala, India
| | - Theivanayagam Maharajan
- Division of Plant Molecular Biology and Biotechnology, Department of Biosciences, Rajagiri College of Social Sciences, Kochi 683104, Kerala, India
| |
Collapse
|
13
|
Genome-wide identification and expression analysis of metal tolerance protein (MTP) gene family in soybean (Glycine max) under heavy metal stress. Mol Biol Rep 2023; 50:2975-2990. [PMID: 36653731 DOI: 10.1007/s11033-022-08100-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 11/08/2022] [Indexed: 01/19/2023]
Abstract
AIM Plant metal tolerance proteins (MTPs) are plant membrane divalent cation transporters that specifically contribute to heavy metal stress resistance and mineral uptake. However, little is known about this family's molecular behaviors and biological activities in soybean. METHODS AND RESULTS A total of 20 potential MTP candidate genes were identified and studied in the soybean genome for phylogenetic relationships, chromosomal distributions, gene structures, gene ontology, cis-elements, and previous gene expression. Furthermore, the expression of MTPs has been investigated under different heavy metals treatments. All identified soybean MTPs (GmaMTPs) contain a cation efflux domain or a ZT dimer and are further divided into three primary cation diffusion facilitator (CDF) groups: Mn-CDFs, Zn-CDFs, and Fe/Zn-CDFs. The developmental analysis reveals that segmental duplication contributes to the GmaMTP family's expansion. Tissue-specific expression profiling revealed comparative expression profiling in similar groups, although gene expression differed between groups. GmaMTP genes displayed biased responses in either plant leaves or roots when treated with heavy metal. In the leaves and roots, nine and ten GmaMTPs responded to at least one metal ion treatment. Furthermore, in most heavy metal treatments, GmaMTP1.1, GmaMTP1.2, GmaMTP3.1, GmaMTP3.2, GmaMTP4.1, and GmaMTP4.3 exhibited significant expression responses. CONCLUSION Our findings provided insight into the evolution of MTPs in soybean. Overall, our findings shed light on the evolution of the MTP gene family in soybean and pave the path for further functional characterization of this gene family.
Collapse
|
14
|
Yu Y, Wang Y, Yao Z, Wang Z, Xia Z, Lee J. Comprehensive Survey of ChIP-Seq Datasets to Identify Candidate Iron Homeostasis Genes Regulated by Chromatin Modifications. Methods Mol Biol 2023; 2665:95-111. [PMID: 37166596 DOI: 10.1007/978-1-0716-3183-6_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Vital biochemical reactions including photosynthesis to respiration require iron, which should be tightly regulated. Although increasing evidence reveals the importance of epigenetic regulation in gene expression and signaling, the role of histone modifications and chromatin remodeling in plant iron homeostasis is not well understood. In this study, we surveyed publicly available ChIP-seq datasets of Arabidopsis wild-type and mutants defective in key enzymes of histone modification and chromatin remodeling and compared the deposition of epigenetic marks on loci of genes involved in iron regulation. Based on the analysis, we compiled a comprehensive list of iron homeostasis genes with differential enrichment of various histone modifications. This report will provide a resource for future studies to investigate epigenetic regulatory mechanisms of iron homeostasis in plants.
Collapse
Affiliation(s)
- Yang Yu
- Division of Natural and Applied Sciences, Duke Kunshan University, Jiangsu, China
| | - Yuxin Wang
- Division of Natural and Applied Sciences, Duke Kunshan University, Jiangsu, China
| | - Zhujun Yao
- Division of Natural and Applied Sciences, Duke Kunshan University, Jiangsu, China
| | - Ziqin Wang
- Division of Natural and Applied Sciences, Duke Kunshan University, Jiangsu, China
| | - Zijun Xia
- Division of Natural and Applied Sciences, Duke Kunshan University, Jiangsu, China
| | - Joohyun Lee
- Division of Natural and Applied Sciences, Duke Kunshan University, Jiangsu, China.
| |
Collapse
|
15
|
Maharajan T, Chellasamy G, Tp AK, Ceasar SA, Yun K. The role of metal transporters in phytoremediation: A closer look at Arabidopsis. CHEMOSPHERE 2023; 310:136881. [PMID: 36257391 DOI: 10.1016/j.chemosphere.2022.136881] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/26/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Pollution of the environment by heavy metals (HMs) has recently become a global issue, affecting the health of all living organisms. Continuous human activities (industrialization and urbanization) are the major causes of HM release into the environment. Over the years, two methods (physical and chemical) have been widely used to reduce HMs in polluted environment. However, these two methods are inefficient and very expensive to reduce the HMs released into the atmosphere. Alternatively, researchers are trying to remove the HMs by employing hyper-accumulator plants. This method, referred to phytoremediation, is highly efficient, cost-effective, and eco-friendly. Phytoremediation can be divided into five types: phytostabilization, phytodegradation, rhizofiltration, phytoextraction, and phytovolatilization, all of which contribute to HMs removal from the polluted environment. Brassicaceae family members (particularly Arabidopsis thaliana) can accumulate more HMs from the contaminated environment than those of other plants. This comprehensive review focuses on how HMs pollute the environment and discusses the phytoremediation measures required to reduce the impact of HMs on the environment. We discuss the role of metal transporters in phytoremediation with a focus on Arabidopsis. Then draw insights into the role of genome editing tools in enhancing phytoremediation efficiency. This review is expected to initiate further research to improve phytoremediation by biotechnological approaches to conserve the environment from pollution.
Collapse
Affiliation(s)
- Theivanayagam Maharajan
- Department of Biosciences, Rajagiri College of Social Sciences, Kalamassery, Cochin, 683 104, Kerala, India
| | - Gayathri Chellasamy
- Department of Bionanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea
| | - Ajeesh Krishna Tp
- Department of Biosciences, Rajagiri College of Social Sciences, Kalamassery, Cochin, 683 104, Kerala, India
| | - Stanislaus Antony Ceasar
- Department of Biosciences, Rajagiri College of Social Sciences, Kalamassery, Cochin, 683 104, Kerala, India.
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea.
| |
Collapse
|
16
|
Ge H, Shao Q, Chen J, Chen J, Li X, Tan Y, Lan W, Yang L, Wang Y. A metal tolerance protein, MTP10, is required for the calcium and magnesium homeostasis in Arabidopsis. PLANT SIGNALING & BEHAVIOR 2022; 17:2025322. [PMID: 35007463 PMCID: PMC9176222 DOI: 10.1080/15592324.2021.2025322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/30/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
Nutrient antagonism typically refers to the fact that too high a concentration of one nutrient inhibits the absorption of another nutrient. In plants, Ca2+ (Calcium) and Mg2+ (Magnesium) are the two most abundant divalent cations, which are known to have antagonistic interactions. Hence, maintaining their homeostasis is crucial for plant growth and development. In this study, we showed that MTP10 (Metal Tolerance Protein 10) is an important regulator for maintaining homeostasis of Mg and Ca in Arabidopsis. The mtp10 mutant displayed severe growth retardation in the presence of excess Mg2+, to which the addition of Ca2+ was able to rescue the phenotype of mtp10 mutant. Additionally, the deficiency of Ca2+ in the culture medium accelerated the high-Mg sensitivity of the mtp10 mutant. The yeast complementation assay suggested that AtMTP10 had no Ca2+ transport activity. And the ICP-MS data further confirmed the antagonistic relationship between Ca2+ and Mg2+, with the addition of Ca2+ reducing the excessive accumulation of Mg2+ and high-Mg inhibiting the uptake of Ca2+. We conclude that the Arabidopsis MTP10 is essential for the regulation of Mg and Ca homeostasis.
Collapse
Affiliation(s)
- Haiman Ge
- College of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
| | - Qiaolin Shao
- Cas Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, PR China
| | - Jinlin Chen
- College of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
| | - Jiahong Chen
- Cas Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, PR China
| | - Xueqin Li
- Cas Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, PR China
| | - Yu Tan
- Cas Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, PR China
| | - Wenzhi Lan
- College of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
| | - Lei Yang
- College of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
| | - Yuan Wang
- College of Life Sciences, Nanjing University, Nanjing, Jiangsu, China
- Cas Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, PR China
| |
Collapse
|
17
|
Effect of Light Quality on Metabolomic, Ionomic, and Transcriptomic Profiles in Tomato Fruit. Int J Mol Sci 2022; 23:ijms232113288. [DOI: 10.3390/ijms232113288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/26/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
Abstract
Light quality affects plant growth and the functional component accumulation of fruits. However, there is little knowledge of the effects of light quality based on multiomics profiles. This study combined transcriptomic, ionomic, and metabolomic analyses to elucidate the effects of light quality on metabolism and gene expression in tomato fruit. Micro-Tom plants were grown under blue or red light-emitting diode light for 16 h daily after anthesis. White fluorescent light was used as a reference. The metabolite and element concentrations and the expression of genes markedly changed in response to blue and red light. Based on the metabolomic analysis, amino acid metabolism and secondary metabolite biosynthesis were active in blue light treatment. According to transcriptomic analysis, differentially expressed genes in blue and red light treatments were enriched in the pathways of secondary metabolite biosynthesis, carbon fixation, and glycine, serine, and threonine metabolism, supporting the results of the metabolomic analysis. Ionomic analysis indicated that the element levels in fruits were more susceptible to changes in light quality than in leaves. The concentration of some ions containing Fe in fruits increased under red light compared to under blue light. The altered expression level of genes encoding metal ion-binding proteins, metal tolerance proteins, and metal transporters in response to blue and red light in the transcriptomic analysis contributes to changes in the ionomic profiles of tomato fruit.
Collapse
|
18
|
Chorianopoulou SN, Bouranis DL. The Role of Sulfur in Agronomic Biofortification with Essential Micronutrients. PLANTS 2022; 11:plants11151979. [PMID: 35956455 PMCID: PMC9370111 DOI: 10.3390/plants11151979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/22/2022] [Accepted: 07/23/2022] [Indexed: 11/16/2022]
Abstract
Sulfur (S) is an essential macronutrient for plants, being necessary for their growth and metabolism and exhibiting diverse roles throughout their life cycles. Inside the plant body, S is present either in one of its inorganic forms or incorporated in an organic compound. Moreover, organic S compounds may contain S in its reduced or oxidized form. Among others, S plays roles in maintaining the homeostasis of essential micronutrients, e.g., iron (Fe), copper (Cu), zinc (Zn), and manganese (Mn). One of the most well-known connections is homeostasis between S and Fe, mainly in terms of the role of S in uptake, transportation, and distribution of Fe, as well as the functional interactions of S with Fe in the Fe-S clusters. This review reports the available information describing the connections between the homeostasis of S and Fe, Cu, Zn, and Mn in plants. The roles of S- or sulfur-derived organic ligands in metal uptake and translocation within the plant are highlighted. Moreover, the roles of these micronutrients in S homeostasis are also discussed.
Collapse
|
19
|
Wang F, Qiao K, Wang H, Wang H, Chai T. MTP8 from Triticum urartu Is Primarily Responsible for Manganese Tolerance. Int J Mol Sci 2022; 23:ijms23105683. [PMID: 35628492 PMCID: PMC9144917 DOI: 10.3390/ijms23105683] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 12/10/2022] Open
Abstract
Mineral nutrients, such as manganese (Mn) and iron (Fe), play essential roles in many biological processes in plants but their over-enrichment is harmful for the metabolism. Metal tolerance proteins (MTPs) are involved in cellular Mn and Fe homeostasis. However, the transporter responsible for the transport of Mn in wheat is unknown. In our study, TuMTP8, a Mn-CDF transporter from diploid wheat (Triticum urartu), was identified. Expression of TuMTP8 in yeast strains of Δccc1 and Δsmf1 and Arabidopsis conferred tolerance to elevated Mn and Fe, but not to other metals (zinc, cobalt, copper, nickel, or cadmium). Compared with TuVIT1 (vacuole Fe transporter), TuMTP8 shows a significantly higher proportion in Mn transport and a smaller proportion in Fe transport. The transient analysis in tobacco epidermal cells revealed that TuMTP8 localizes to vacuolar membrane. The highest transcript levels of TuMTP8 were in the sheath of the oldest leaf and the awn, suggesting that TuMTP8 sequesters excess Mn into the vacuole in these organs, away from more sensitive tissues. These findings indicate that TuMTP8, a tonoplast-localized Mn/Fe transporter, functions as a primary balancer to regulate Mn distribution in T. urartu under elevated Mn conditions and participates in the intracellular transport and storage of excess Mn as a detoxification mechanism, thereby conferring Mn tolerance.
Collapse
Affiliation(s)
- Fanhong Wang
- College of Life Sciences, Northwest Normal University, Lanzhou 730070, China;
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
| | - Kun Qiao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China;
| | - Huanhuan Wang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
| | - Hong Wang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
- Correspondence: (H.W.); (T.C.); Tel./Fax: +86-10-88256343 (T.C.)
| | - Tuanyao Chai
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
- The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (H.W.); (T.C.); Tel./Fax: +86-10-88256343 (T.C.)
| |
Collapse
|
20
|
Zee DZ, MacRenaris KW, O'Halloran TV. Quantitative imaging approaches to understanding biological processing of metal ions. Curr Opin Chem Biol 2022; 69:102152. [PMID: 35561425 PMCID: PMC9329216 DOI: 10.1016/j.cbpa.2022.102152] [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: 02/14/2022] [Revised: 03/19/2022] [Accepted: 03/28/2022] [Indexed: 11/18/2022]
Abstract
Faster, more sensitive, and higher resolution quantitative instrumentation are aiding a deeper understanding of how inorganic chemistry regulates key biological processes. Researchers can now image and quantify metals with subcellular resolution, leading to a vast array of new discoveries in organismal development, pathology, and disease. Metals have recently been implicated in several diseases such as Parkinson's, Alzheimers, ischemic stroke, and colorectal cancer that would not be possible without these advancements. In this review, instead of focusing on instrumentation we focus on recent applications of label-free elemental imaging and quantification and how these tools can lead to a broader understanding of metals role in systems biology and human pathology.
Collapse
Affiliation(s)
- David Z Zee
- The Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA
| | - Keith W MacRenaris
- The Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA; Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Thomas V O'Halloran
- The Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA; Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA; Department of Chemistry, Michigan State University, East Lansing, MI, USA; Department of Molecular Biosciences, Northwestern University, Evanston, IL, USA; Department of Chemistry, Northwestern University, Evanston, IL, USA; Elemental Health Institute, Michigan State University, East Lansing, MI, USA.
| |
Collapse
|
21
|
Grant-Grant S, Schaffhauser M, Baeza-Gonzalez P, Gao F, Conéjéro G, Vidal EA, Gaymard F, Dubos C, Curie C, Roschzttardtz H. B3 Transcription Factors Determine Iron Distribution and FERRITIN Gene Expression in Embryo but Do Not Control Total Seed Iron Content. FRONTIERS IN PLANT SCIENCE 2022; 13:870078. [PMID: 35599858 PMCID: PMC9120844 DOI: 10.3389/fpls.2022.870078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 03/21/2022] [Indexed: 05/26/2023]
Abstract
Iron is an essential micronutrient for humans and other organisms. Its deficiency is one of the leading causes of anemia worldwide. The world health organization has proposed that an alternative to increasing iron content in food is through crop biofortification. One of the most consumed part of crops is the seed, however, little is known about how iron accumulation in seed occurs and how it is regulated. B3 transcription factors play a critical role in the accumulation of storage compounds such as proteins and lipids. Their role in seed maturation has been well characterized. However, their relevance in accumulation and distribution of micronutrients like iron remains unknown. In Arabidopsis thaliana and other plant models, three master regulators belonging to the B3 transcription factors family have been identified: FUSCA3 (FUS3), LEAFY COTYLEDON2 (LEC2), and ABSCISIC ACID INSENSITIVE 3 (ABI3). In this work, we studied how seed iron homeostasis is affected in B3 transcription factors mutants using histological and molecular approaches. We determined that iron distribution is modified in abi3, lec2, and fus3 embryo mutants. For abi3-6 and fus3-3 mutant embryos, iron was less accumulated in vacuoles of cells surrounding provasculature compared with wild type embryos. lec2-1 embryos showed no difference in the pattern of iron distribution in hypocotyl, but a dramatic decrease of iron was observed in cotyledons. Interestingly, for the three mutant genotypes, total iron content in dry mutant seeds showed no difference compared to wild type. At the molecular level, we showed that genes encoding the iron storage ferritins proteins are misregulated in mutant seeds. Altogether our results support a role of the B3 transcription factors ABI3, LEC2, and FUS3 in maintaining iron homeostasis in Arabidopsis embryos.
Collapse
Affiliation(s)
- Susana Grant-Grant
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Macarena Schaffhauser
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo Baeza-Gonzalez
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Fei Gao
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Geneviève Conéjéro
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Elena A. Vidal
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Santiago, Chile
- Escuela de Biotecnología, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Santiago, Chile
- Agencia Nacional de Investigación y Desarrollo ANID-Millennium Science Initiative Program, Millennium Institute for Integrative Biology (iBio), Santiago, Chile
| | - Frederic Gaymard
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Christian Dubos
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Catherine Curie
- IPSiM, Univ. Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Hannetz Roschzttardtz
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
22
|
Ju C, Zhang Z, Deng J, Miao C, Wang Z, Wallrad L, Javed L, Fu D, Zhang T, Kudla J, Gong Z, Wang C. Ca 2+-dependent successive phosphorylation of vacuolar transporter MTP8 by CBL2/3-CIPK3/9/26 and CPK5 is critical for manganese homeostasis in Arabidopsis. MOLECULAR PLANT 2022; 15:419-437. [PMID: 34848347 DOI: 10.1016/j.molp.2021.11.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 09/07/2021] [Accepted: 11/26/2021] [Indexed: 06/13/2023]
Abstract
Manganese (Mn) is an essential micronutrient for all living organisms. However, excess Mn supply that can occur in acid or waterlogged soils has toxic effects on plant physiology and development. Although a variety of Mn transporter families have been characterized, we have only a rudimentary understanding of how these transporters are regulated to uphold and adjust Mn homeostasis in plants. Here, we demonstrate that two calcineurin-B-like proteins, CBL2/3, and their interacting kinases, CIPK3/9/26, are key regulators of plant Mn homeostasis. Arabidopsis mutants lacking CBL2 and 3 or their interacting protein kinases CIPK3/9/26 exhibit remarkably high Mn tolerance. Intriguingly, CIPK3/9/26 interact with and phosphorylate the tonoplast-localized Mn and iron (Fe) transporter MTP8 primarily at Ser35, which is conserved among MTP8 proteins from various species. Mn transport complementation assays in yeast combined with multiple physiological assays indicate that CBL-CIPK-mediated phosphorylation of MTP8 negatively regulates its transport activity from the cytoplasm to the vacuole. Moreover, we show that sequential phosphorylation of MTP8, initially at Ser31/32 by the calcium-dependent protein kinase CPK5 and subsequently at Ser35 by CIPK26, provides an activation/deactivation fine-tuning mechanism for differential regulation of Mn transport. Collectively, our findings define a two-tiered calcium-controlled mechanism for dynamic regulation of Mn homeostasis under conditions of fluctuating Mn supply.
Collapse
Affiliation(s)
- Chuanfeng Ju
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China
| | - Zhenqian Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China
| | - Jinping Deng
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Cuicui Miao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China
| | - Zhangqing Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China
| | - Lukas Wallrad
- Institut fur Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | - Laiba Javed
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China
| | - Dali Fu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China
| | - Ting Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China
| | - Jörg Kudla
- Institut fur Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität, 48149 Münster, Germany
| | - Zhizhong Gong
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China; College of Life Sciences, Hebei University, Baoding, China
| | - Cun Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, and Institute of Future Agriculture, Northwest Agriculture & Forestry University, Yangling, Shaanxi 712100, China.
| |
Collapse
|
23
|
Jiang X, Yin J, Wang L, Xi K, Zhu X, Li G, Zhu Y, Liu Y. Identification and evolutionary analysis of the metal-tolerance protein family in eight Cucurbitaceae species. THE PLANT GENOME 2022; 15:e20167. [PMID: 34741493 DOI: 10.1002/tpg2.20167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Metal-tolerance proteins (MTPs) are divalent cation transporters and play fundamental roles in plant metal tolerance and ion homeostasis. Despite that, a systematic investigation of MTPs in Cucurbitacea is still lacking. In this study, 142 MTPs were identified from 11 released genomes of 8 Cucurbitaceae species. They were phylogenetically separated into three clusters (Zn-cation diffusion facilitator proteins [CDFs], Fe/Zn-CDFs, and Mn-CDFs) and further subdivided into seven groups (G1, G5, G6, G7, G8, G9, and G12). Characterization analysis revealed that most MTPs were plasma membrane-located hydrophobic proteins. Motif and exon/intron analysis showed that members in the same group contained similar conserved motifs and gene structures. Moreover, 98 pairs of segmental-like duplication events were found. The nonsynonymous/synonymous substitution ratios between each pair were less than 1, implying that Cucurbitaceae MTPs were under purification selection. Expression profiling suggested that several MTP genes, such as CsCLMTP1, CmeMTP3, LsMTP3, and Cl97103MTP3, were constitutively expressed in corresponding Cucurbitaceae species, and their expression levels were not significantly altered by NaCl, drought, or pathogen infection. The expression patterns of cucumber MTP genes under Zn2+ , Cu2+ , Mn2+ , and Cd2+ stress were studied by quantitative real-time polymerase chain reaction and the results showed that these MTPs were induced by at least one metal ion, suggesting their involvement in metal tolerance or transportation. The identification and comprehensive investigation of MTP family members will provide a basis for the analysis of ion transport functions and ion tolerance mechanisms of Cucurbitaceae MTPs.
Collapse
Affiliation(s)
- Xinchen Jiang
- Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland/College of Horticulture and Gardening, Yangtze Univ., Jingzhou, Hubei, 434000, China
| | - Junliang Yin
- Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland/College of Horticulture and Gardening, Yangtze Univ., Jingzhou, Hubei, 434000, China
| | - Lixin Wang
- College of Horticulture, Hebei Agricultural Univ., Baoding, Hebei, 071001, China
| | - Keyong Xi
- Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland/College of Horticulture and Gardening, Yangtze Univ., Jingzhou, Hubei, 434000, China
| | - Xiongmeng Zhu
- Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland/College of Horticulture and Gardening, Yangtze Univ., Jingzhou, Hubei, 434000, China
| | - Gang Li
- Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland/College of Horticulture and Gardening, Yangtze Univ., Jingzhou, Hubei, 434000, China
| | - Yongxing Zhu
- Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland/College of Horticulture and Gardening, Yangtze Univ., Jingzhou, Hubei, 434000, China
| | - Yiqing Liu
- Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland/College of Horticulture and Gardening, Yangtze Univ., Jingzhou, Hubei, 434000, China
| |
Collapse
|
24
|
Höller S, Küpper H, Brückner D, Garrevoet J, Spiers K, Falkenberg G, Andresen E, Peiter E. Overexpression of METAL TOLERANCE PROTEIN8 reveals new aspects of metal transport in Arabidopsis thaliana seeds. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:23-29. [PMID: 34546650 DOI: 10.1111/plb.13342] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
METAL TOLERANCE PROTEIN8 (MTP8) of Arabidopsis thaliana is a member of the CATION DIFFUSION FACILITATOR (CDF) family of proteins that transports primarily manganese (Mn), but also iron (Fe). MTP8 mediates Mn allocation to specific cell types in the developing embryo, and Fe re-allocation as well as Mn tolerance during imbibition. We analysed if an overexpression of MTP8 driven by the CaMV 35S promoter has an effect on Mn tolerance during imbibition and on Mn and Fe storage in seeds, which would render it a biofortification target. Fe, Mn and Zn concentrations in MTP8-overexpressing lines in wild type and vit1-1 backgrounds were analysed by ICP-MS. Distribution of metals in intact seeds was determined by synchrotron µXRF tomography. MTP8 overexpression led to a strongly increased Mn tolerance of seeds during imbibition, supporting its effectiveness in loading excess Mn into the vacuole. In mature seeds, MTP8 overexpression did not cause a consistent increase in Mn and Fe accumulation, and it did not change the allocation pattern of these metals. Zn concentrations were consistently increased in bulk samples. The results demonstrate that Mn and Fe allocation is not determined primarily by the MTP8 expression pattern, suggesting either a cell type-specific provision of metals for vacuolar sequestration by upstream transport processes, or the determination of MTP8 activity by post-translational regulation.
Collapse
Affiliation(s)
- S Höller
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - H Küpper
- Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics & Biochemistry, Czech Academy of Sciences, České Budějovice, Czech Republic
- Department of Experimental Plant Biology, University of South Bohemia, České Budějovice, Czech Republic
| | - D Brückner
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
- Department of Physics, University of Hamburg, Hamburg, Germany
- Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - J Garrevoet
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - K Spiers
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - G Falkenberg
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
| | - E Andresen
- Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics & Biochemistry, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - E Peiter
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| |
Collapse
|
25
|
Ge H, Wang Y, Chen J, Zhang B, Chen R, Lan W, Luan S, Yang L. An Arabidopsis vasculature distributed metal tolerance protein facilitates xylem magnesium diffusion to shoots under high-magnesium environments. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:166-182. [PMID: 34761874 DOI: 10.1111/jipb.13187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
Magnesium (Mg2+ ) is an essential metal for plant growth; however, its over-accumulation in cells can be cytotoxic. The metal tolerance protein family (MTP) belongs to an ubiquitous family of cation diffusion facilitator (CDF) proteins that export divalent metal cations for metal homeostasis and tolerance in all organisms. We describe here the identification of MTP10 to be critical for xylem Mg homeostasis in Arabidopsis under high Mg2+ conditions. The Arabidopsis plant contains 12 MTP genes, and only knockout of MTP10 decreased the tolerance of high-Mg stress. The functional complementation assays in a Mg2+ -uptake-deficient bacterial strain MM281 confirmed that MTP10 conducted Mg2+ transport. MTP10 is localized to the plasma membrane of parenchyma cells around the xylem. Reciprocal grafting analysis further demonstrated that MTP10 functions in the shoot to determine the shoot growth phenotypes under high Mg2+ conditions. Moreover, compared to the wild type, the mtp10 mutant accumulated more Mg2+ in xylem sap under high-Mg stress. This study reveals that MTP10 facilitates Mg2+ diffusion from the xylem to shoots and thus determines Mg homeostasis in shoot vascular tissues during high-Mg stress.
Collapse
Affiliation(s)
- Haiman Ge
- Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, College of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Yuan Wang
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai, 201602, China
| | - Jinlin Chen
- Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, College of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Bin Zhang
- Chinese Education Ministry's Key Laboratory of Western Resources and Modern Biotechnology, Key Laboratory of Biotechnology Shaanxi Province, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Rui Chen
- Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, College of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Wenzhi Lan
- Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, College of Life Sciences, Nanjing University, Nanjing, 210093, China
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, California, 94702, USA
| | - Lei Yang
- Nanjing University-Nanjing Forestry University Joint Institute for Plant Molecular Biology, College of Life Sciences, Nanjing University, Nanjing, 210093, China
| |
Collapse
|
26
|
He J, Rössner N, Hoang MTT, Alejandro S, Peiter E. Transport, functions, and interaction of calcium and manganese in plant organellar compartments. PLANT PHYSIOLOGY 2021; 187:1940-1972. [PMID: 35235665 PMCID: PMC8890496 DOI: 10.1093/plphys/kiab122] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 03/02/2021] [Indexed: 05/05/2023]
Abstract
Calcium (Ca2+) and manganese (Mn2+) are essential elements for plants and have similar ionic radii and binding coordination. They are assigned specific functions within organelles, but share many transport mechanisms to cross organellar membranes. Despite their points of interaction, those elements are usually investigated and reviewed separately. This review takes them out of this isolation. It highlights our current mechanistic understanding and points to open questions of their functions, their transport, and their interplay in the endoplasmic reticulum (ER), vesicular compartments (Golgi apparatus, trans-Golgi network, pre-vacuolar compartment), vacuoles, chloroplasts, mitochondria, and peroxisomes. Complex processes demanding these cations, such as Mn2+-dependent glycosylation or systemic Ca2+ signaling, are covered in some detail if they have not been reviewed recently or if recent findings add to current models. The function of Ca2+ as signaling agent released from organelles into the cytosol and within the organelles themselves is a recurrent theme of this review, again keeping the interference by Mn2+ in mind. The involvement of organellar channels [e.g. glutamate receptor-likes (GLR), cyclic nucleotide-gated channels (CNGC), mitochondrial conductivity units (MCU), and two-pore channel1 (TPC1)], transporters (e.g. natural resistance-associated macrophage proteins (NRAMP), Ca2+ exchangers (CAX), metal tolerance proteins (MTP), and bivalent cation transporters (BICAT)], and pumps [autoinhibited Ca2+-ATPases (ACA) and ER Ca2+-ATPases (ECA)] in the import and export of organellar Ca2+ and Mn2+ is scrutinized, whereby current controversial issues are pointed out. Mechanisms in animals and yeast are taken into account where they may provide a blueprint for processes in plants, in particular, with respect to tunable molecular mechanisms of Ca2+ versus Mn2+ selectivity.
Collapse
Affiliation(s)
- Jie He
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Nico Rössner
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Minh T T Hoang
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Santiago Alejandro
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
| | - Edgar Peiter
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, D-06099 Halle (Saale), Germany
- Author for communication:
| |
Collapse
|
27
|
El- Sappah AH, Elrys AS, Desoky ESM, Zhao X, Bingwen W, El-Sappah HH, Zhu Y, Zhou W, Zhao X, Li J. Comprehensive genome wide identification and expression analysis of MTP gene family in tomato ( Solanum lycopersicum) under multiple heavy metal stress. Saudi J Biol Sci 2021; 28:6946-6956. [PMID: 34866994 PMCID: PMC8626246 DOI: 10.1016/j.sjbs.2021.07.073] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 06/22/2021] [Accepted: 07/26/2021] [Indexed: 11/24/2022] Open
Abstract
Plant metal tolerance proteins (MTPs) play major roles in enhancing resistance to heavy metal tolerance and homeostasis. However, the role of MTPs genes in tomato, which is one of the most popular crops, is still largely limited. Hence, we investigated genome-wide study of tomato MTPs, including phylogenetic, duplication, gene structure, gene ontology and previous transcriptomic data analysis. Moreover, the MTPs expression behaviour under various heavy metals stress has rarely been investigated. In the current study, eleven MTP candidate genes were genome-wide identified and classified into three major groups; Mn-cation diffusion facilitators (CDFs), Fe/Zn-CDFs, and Zn-CDFs based on the phylogeny. Structural analysis of SlMTPs showed high gene similarity within the same group with cation_efflux or ZT_dimerdomains. Evolutionary analysis revealed that segmental duplication contributed to the expansion of the SlMTP family. Gene ontology further showed the vital roles of MTPs in metal-related processes. Tissue-specific expression profiling exhibited similar expression patterns in the same group, whereas gene expression varied among groups. The MTPs expression was evaluated after tomato treatments by five divalent heavy metals (Cd2+, Co2+, Mn2+, Zn2+, and Fe2+). SlMTP genes displayed differential responses in either plant leaves or roots under heavy metals treatments. Nine and ten SlMTPs responded to at least one metal ion treatment in leaves and roots, respectively. In addition SlMTP1, SlMTP3, SlMTP4, SlMTP8, SlMTP10 and SlMTP11 exhibited the highest expression responses in most of heavy metals treatments. Overall, our findings presented a standpoint on the evolution of MTPs and their evolution in tomato and paved the way for additional functional characterization under heavy metal toxicity.
Collapse
Affiliation(s)
- Ahmed H. El- Sappah
- School of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin 644000, Sichuan, China
- Genetics Department, Faculty of Agriculture, Zagazig University, 44511 Zagazig, Egypt
| | - Ahmed S. Elrys
- Soil Science Department, Faculty of Agriculture, Zagazig University, 44511 Zagazig, Egypt
| | - El-Sayed M. Desoky
- Botany Department, Faculty of Agriculture, Zagazig University, 44511 Zagazig, Egypt
| | - Xia Zhao
- School of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin 644000, Sichuan, China
| | - Wang Bingwen
- School of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin 644000, Sichuan, China
| | | | - Yumin Zhu
- School of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin 644000, Sichuan, China
| | - Wanhai Zhou
- School of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin 644000, Sichuan, China
| | - Xianming Zhao
- School of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin 644000, Sichuan, China
| | - Jia Li
- School of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin 644000, Sichuan, China
| |
Collapse
|
28
|
El-Sappah AH, Elbaiomy RG, Elrys AS, Wang Y, Zhu Y, Huang Q, Yan K, Xianming Z, Abbas M, El-Tarabily KA, Li J. Genome-Wide Identification and Expression Analysis of Metal Tolerance Protein Gene Family in Medicago truncatula Under a Broad Range of Heavy Metal Stress. Front Genet 2021; 12:713224. [PMID: 34603378 PMCID: PMC8482800 DOI: 10.3389/fgene.2021.713224] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 06/30/2021] [Indexed: 01/02/2023] Open
Abstract
Metal tolerance proteins (MTPs) encompass plant membrane divalent cation transporters to specifically participate in heavy metal stress resistance and mineral acquisition. However, the molecular behaviors and biological functions of this family in Medicago truncatula are scarcely known. A total of 12 potential MTP candidate genes in the M. truncatula genome were successfully identified and analyzed for a phylogenetic relationship, chromosomal distributions, gene structures, docking analysis, gene ontology, and previous gene expression. M. truncatula MTPs (MtMTPs) were further classified into three major cation diffusion facilitator (CDFs) groups: Mn-CDFs, Zn-CDFs, and Fe/Zn-CDFs. The structural analysis of MtMTPs displayed high gene similarity within the same group where all of them have cation_efflux domain or ZT_dimer. Cis-acting element analysis suggested that various abiotic stresses and phytohormones could induce the most MtMTP gene transcripts. Among all MTPs, PF16916 is the specific domain, whereas GLY, ILE, LEU, MET, ALA, SER, THR, VAL, ASN, and PHE amino acids were predicted to be the binding residues in the ligand-binding site of all these proteins. RNA-seq and gene ontology analysis revealed the significant role of MTP genes in the growth and development of M. truncatula. MtMTP genes displayed differential responses in plant leaves, stems, and roots under five divalent heavy metals (Cd2+, Co2+, Mn2+, Zn2+, and Fe2+). Ten, seven, and nine MtMTPs responded to at least one metal ion treatment in the leaves, stems, and roots, respectively. Additionally, MtMTP1.1, MtMTP1.2, and MtMTP4 exhibited the highest expression responses in most heavy metal treatments. Our results presented a standpoint on the evolution of MTPs in M. truncatula. Overall, our study provides a novel insight into the evolution of the MTP gene family in M. truncatula and paves the way for additional functional characterization of this gene family.
Collapse
Affiliation(s)
- Ahmed H El-Sappah
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China.,Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | | | - Ahmed S Elrys
- Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Yu Wang
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Yumin Zhu
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Qiulan Huang
- College of Tea Science, Yibin University, Yibin, China
| | - Kuan Yan
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Zhao Xianming
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Manzar Abbas
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| | - Khaled A El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates.,Harry Butler Institute, Murdoch University, Murdoch, WA, Australia
| | - Jia Li
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
| |
Collapse
|
29
|
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: 6] [Impact Index Per Article: 2.0] [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.
Collapse
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
| |
Collapse
|
30
|
Genome-Wide Identification, Structure Characterization, Expression Pattern Profiling, and Substrate Specificity of the Metal Tolerance Protein Family in Canavalia rosea (Sw.) DC. PLANTS 2021; 10:plants10071340. [PMID: 34209283 PMCID: PMC8309081 DOI: 10.3390/plants10071340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 11/16/2022]
Abstract
Plant metal tolerance proteins (MTPs) play key roles in heavy metal absorption and homeostasis in plants. By using genome-wide and phylogenetic approaches, the origin and diversification of MTPs from Canavalia rosea (Sw.) DC. was explored. Canavalia rosea (bay bean) is an extremophile halophyte with strong adaptability to seawater and drought and thereby shows specific metal tolerance with a potential phytoremediation ability. However, MTP genes in leguminous plants remain poorly understood. In our study, a total of 12 MTP genes were identified in C. rosea. Multiple sequence alignments showed that all CrMTP proteins possessed the conserved transmembrane domains (TM1 to TM6) and could be classified into three subfamilies: Zn-CDFs (five members), Fe/Zn-CDFs (five members), and Mn-CDFs (two members). Promoter cis-acting element analyses revealed that a distinct number and composition of heavy metal regulated elements and other stress-responsive elements existed in different promoter regions of CrMTPs. Analysis of transcriptome data revealed organ-specific expression of CrMTP genes and the involvement of this family in heavy metal stress responses and adaptation of C. rosea to extreme coral reef environments. Furthermore, the metal-specific activity of several functionally unknown CrMTPs was investigated in yeast. These results will contribute to uncovering the potential functions and molecular mechanisms of heavy metal absorption, translocation, and accumulation in C. rosea plants.
Collapse
|
31
|
Wang FH, Qiao K, Shen YH, Wang H, Chai TY. Characterization of the gene family encoding metal tolerance proteins in Triticum urartu: Phylogenetic, transcriptional, and functional analyses. Metallomics 2021; 13:6308381. [PMID: 34160615 DOI: 10.1093/mtomcs/mfab038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 06/11/2021] [Accepted: 06/13/2021] [Indexed: 12/22/2022]
Abstract
Homeostasis of microelements in organisms is vital for normal metabolism. In plants, the cation diffusion facilitator (CDF) protein family, also known as metal tolerance proteins (MTPs), play critical roles in maintaining trace metal homeostasis. However, little is known about these proteins in wheat. In this study, we characterized the MTP family of Triticum urartu, the donor of 'A' genome of Triticum aestivum, and analysed their phylogenetic relationships, sequence signatures, spatial expression patterns in the diploid wheat, and their transport activity when heterologously expressed. Nine MTPs were identified in the T. urartu genome database, and were classified and designated based on their sequence similarity to Arabidopsis thaliana (Arabidopsis) and Oryza sativa MTPs. Phylogenetic and sequence analyses indicated that the triticum urartu metal tolerance protein (TuMTP)s comprise three Zn-CDFs, two Fe/Zn-CDFs, and four Mn-CDFs; and can be further classified into six subgroups. Among the TuMTPs, there are no MTP2-5 and MTP9-10 counterparts but two MTP1/8/11 orthologs in relation to AtMTPs. It was also shown that members of the same cluster share similar sequence characteristic, i.e. number of introns, predicted transmembrane domains, and motifs. When expressed in yeast, TuMTP1 and TuMTP1.1 conferred tolerance to Zn and Co but not to other metal ions; while TuMTP8, TuMTP8.1, TuMTP11, and TuMTP11.1 conferred tolerance to Mn. When expressed in Arabidopsis, TuMTP1 localized to the tonoplast and significantly enhanced Zn and Co tolerance. TuMTPs showed diverse tissue-specific expression patterns. Taken together, the closely clustered TuMTPs share structural features and metal specificity but play diverse roles in the homeostasis of microelements in plant cells.
Collapse
Affiliation(s)
- Fan-Hong Wang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kun Qiao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Yong-Hua Shen
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hong Wang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tuan-Yao Chai
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- The Innovative Academy of Seed Design, Chinese Academy of Science, Beijing, 100049, China
| |
Collapse
|
32
|
Li Y, Li J, Yu Y, Dai X, Gong C, Gu D, Xu E, Liu Y, Zou Y, Zhang P, Chen X, Zhang W. The tonoplast-localized transporter OsNRAMP2 is involved in iron homeostasis and affects seed germination in rice. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:4839-4852. [PMID: 33864461 DOI: 10.1093/jxb/erab159] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 04/10/2021] [Indexed: 06/12/2023]
Abstract
Vacuolar storage of iron (Fe) is important for Fe homeostasis in plants. When sufficient, excess Fe could be stored in vacuoles for remobilization in the case of Fe deficiency. Although the mechanism of Fe remobilization from vacuoles is critical for crop development under low Fe stress, the transporters that mediate vacuolar Fe translocation into the cytosol in rice remains unknown. Here, we showed that under high Fe2+ concentrations, the Δccc1 yeast mutant transformed with the rice natural resistance-associated macrophage protein 2 gene (OsNRAMP2) became more sensitive to Fe toxicity. In rice protoplasts and transgenic plants expressing Pro35S:OsNRAMP2-GFP, OsNRAMP2 was localized to the tonoplast. Vacuolar Fe content in osnramp2 knockdown lines was higher than in the wild type, while the growth of osnramp2 knockdown plants was significantly influenced by Fe deficiency. Furthermore, the germination of osnramp2 knockdown plants was arrested. Conversely, the vacuolar Fe content of Pro35S:OsNRAMP2-GFP lines was significantly lower than in the wild type, and overexpression of OsNRAMP2 increased shoot biomass under Fe deficiency. Taken together, we propose that OsNRAMP2 transports Fe from the vacuole to the cytosol and plays a pivotal role in seed germination.
Collapse
Affiliation(s)
- Yun Li
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Jingjun Li
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Yihong Yu
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Xia Dai
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Changyi Gong
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Dongfang Gu
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Ending Xu
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Yiheng Liu
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Yu Zou
- Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui, China
| | - Peijiang Zhang
- Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei, Anhui, China
| | - Xi Chen
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| | - Wei Zhang
- Department of Biochemistry & Molecular Biology, College of Life Science, Nanjing Agriculture University, Nanjing, Jiangsu, China
| |
Collapse
|
33
|
Zhang Z, Fu D, Sun Z, Ju C, Miao C, Wang Z, Xie D, Ma L, Gong Z, Wang C. Tonoplast-associated calcium signaling regulates manganese homeostasis in Arabidopsis. MOLECULAR PLANT 2021; 14:805-819. [PMID: 33676025 DOI: 10.1016/j.molp.2021.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/22/2021] [Accepted: 02/27/2021] [Indexed: 06/12/2023]
Abstract
Manganese (Mn) is an essential micronutrient in plants. However, excessive Mn absorption in acidic and waterlogged soils can lead to Mn toxicity. Despite their essential roles in Mn homeostasis, transcriptional and post-transcriptional modifications of Mn transporters remain poorly understood. Here, we demonstrated that high-Mn stress induces an obvious Ca2+ signature in Arabidopsis. We identified four calcium-dependent protein kinases, CPK4/5/6/11, that interact with the tonoplast-localized Mn and iron (Fe) transporter MTP8 in vitro and in vivo. The cpk4/5/6/11 quadruple mutant displayed a dramatic high-Mn-sensitive phenotype similar to that of the mtp8 mutant. CPKs phosphorylated the N-terminal domain of MTP8 primarily at the Ser31 and Ser32 residues. Transport assays combined with multiple physiological experiments on phospho-dead variant MTP8S31/32A and phospho-mimetic variant MTP8S31/32D plants under different Mn and Fe conditions suggested that Ser31 and Ser32 are crucial for MTP8 function. In addition, genetic analysis showed that CPKs functioned upstream of MTP8. In summary, we identified a tonoplast-associated calcium signaling cascade that orchestrates Mn homeostasis and links Mn toxicity, Ca2+ signaling, and Mn transporters. These findings provide new insight into Mn homeostasis mechanisms and Ca2+ signaling pathways in plants, providing potential targets for engineering heavy metal toxicity-tolerant plants.
Collapse
Affiliation(s)
- Zhenqian Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Dali Fu
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Zhihui Sun
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Chuanfeng Ju
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Cuicui Miao
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Zhangqing Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Dixiang Xie
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Liang Ma
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Zhizhong Gong
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China; College of Life Sciences, Hebei University, Baoding, China
| | - Cun Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China.
| |
Collapse
|
34
|
Bashir K, Ahmad Z, Kobayashi T, Seki M, Nishizawa NK. Roles of subcellular metal homeostasis in crop improvement. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2083-2098. [PMID: 33502492 DOI: 10.1093/jxb/erab018] [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: 09/16/2020] [Accepted: 01/25/2021] [Indexed: 06/12/2023]
Abstract
Improvement of crop production in response to rapidly changing environmental conditions is a serious challenge facing plant breeders and biotechnologists. Iron (Fe), zinc (Zn), manganese (Mn), and copper (Cu) are essential micronutrients for plant growth and reproduction. These minerals are critical to several cellular processes including metabolism, photosynthesis, and cellular respiration. Regulating the uptake and distribution of these minerals could significantly improve plant growth and development, ultimately leading to increased crop production. Plant growth is limited by mineral deficiency, but on the other hand, excess Fe, Mn, Cu, and Zn can be toxic to plants; therefore, their uptake and distribution must be strictly regulated. Moreover, the distribution of these metals among subcellular organelles is extremely important for maintaining optimal cellular metabolism. Understanding the mechanisms controlling subcellular metal distribution and availability would enable development of crop plants that are better adapted to challenging and rapidly changing environmental conditions. Here, we describe advances in understanding of subcellular metal homeostasis, with a particular emphasis on cellular Fe homeostasis in Arabidopsis and rice, and discuss strategies for regulating cellular metabolism to improve plant production.
Collapse
Affiliation(s)
- Khurram Bashir
- Department of Biology, Syed Babar Ali School of Science and Engineering, Lahore, Pakistan
- Plant Genomics Network Research Team, Center for Sustainable Resource Science, Suehiro, Tsurumi Ku, Yokohama, Kanagawa, Japan
| | - Zarnab Ahmad
- Plant Genomics Network Research Team, Center for Sustainable Resource Science, Suehiro, Tsurumi Ku, Yokohama, Kanagawa, Japan
| | - Takanori Kobayashi
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Motoaki Seki
- Plant Genomics Network Research Team, Center for Sustainable Resource Science, Suehiro, Tsurumi Ku, Yokohama, Kanagawa, Japan
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Japan
- Plant Epigenome Regulation Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama, Japan
| | - Naoko K Nishizawa
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo, Japan
| |
Collapse
|
35
|
Ruang-Areerate P, Travis AJ, Pinson SRM, Tarpley L, Eizenga GC, Guerinot ML, Salt DE, Douglas A, Price AH, Norton GJ. Genome-wide association mapping for grain manganese in rice (Oryza sativa L.) using a multi-experiment approach. Heredity (Edinb) 2020; 126:505-520. [PMID: 33235293 DOI: 10.1038/s41437-020-00390-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 11/06/2020] [Accepted: 11/06/2020] [Indexed: 11/09/2022] Open
Abstract
Manganese (Mn) is an essential trace element for plants and commonly contributes to human health; however, the understanding of the genes controlling natural variation in Mn in crop plants is limited. Here, the integration of two of genome-wide association study approaches was used to increase the identification of valuable quantitative trait loci (QTL) and candidate genes responsible for the concentration of grain Mn across 389 diverse rice cultivars grown in Arkansas and Texas, USA, in multiple years. Single-trait analysis was initially performed using three different SNP datasets. As a result, significant loci could be detected using the high-density SNP dataset. Based on the 5.2 M SNP dataset, major QTLs were located on chromosomes 3 and 7 for Mn containing six candidate genes. In addition, the phenotypic data of grain Mn concentration were combined from three flooded-field experiments from the two sites and 3 years using multi-experiment analysis based on the 5.2 M SNP dataset. Two previous QTLs on chromosome 3 were identified across experiments, whereas new Mn QTLs were identified that were not found in individual experiments, on chromosomes 3, 4, 9 and 11. OsMTP8.1 was identified in both approaches and is a good candidate gene that could be controlling grain Mn concentration. This work demonstrates the utilisation of multi-experiment analysis to identify constitutive QTLs and candidate genes associated with the grain Mn concentration. Hence, the approach should be advantageous to facilitate genomic breeding programmes in rice and other crops considering QTLs and genes associated with complex traits in natural populations.
Collapse
Affiliation(s)
- Panthita Ruang-Areerate
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK. .,National Omics Center, National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| | - Anthony J Travis
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK
| | - Shannon R M Pinson
- USDA-ARS Dale Bumpers National Rice Research Center, Stuttgart, AR, 72160, USA
| | - Lee Tarpley
- Texas A&M System AgriLife Research Center, Beaumont, TX, 77713, USA
| | - Georgia C Eizenga
- USDA-ARS Dale Bumpers National Rice Research Center, Stuttgart, AR, 72160, USA
| | - Mary Lou Guerinot
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA
| | - David E Salt
- Future Food Beacon of Excellence and the School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Alex Douglas
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK
| | - Adam H Price
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK
| | - Gareth J Norton
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK
| |
Collapse
|
36
|
Sun Y, Li JQ, Yan JY, Yuan JJ, Li GX, Wu YR, Xu JM, Huang RF, Harberd NP, Ding ZJ, Zheng SJ. Ethylene promotes seed iron storage during Arabidopsis seed maturation via ERF95 transcription factor. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1193-1212. [PMID: 32619040 DOI: 10.1111/jipb.12986] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
Because Iron (Fe) is an essential element, Fe storage in plant seeds is necessary for seedling establishment following germination. However, the mechanisms controlling seed Fe storage during seed development remain largely unknown. Here we reveal that an ERF95 transcription factor regulates Arabidopsis seed Fe accumulation. We show that expression of ERF95 increases during seed maturation, and that lack of ERF95 reduces seed Fe accumulation, consequently increasing sensitivity to Fe deficiency during seedling establishment. Conversely, overexpression of ERF95 has the opposite effects. We show that lack of ERF95 decreases abundance of FER1 messenger RNA in developing seed, which encodes Fe-sequestering ferritin. Accordingly, a fer1-1 loss-of-function mutation confers reduced seed Fe accumulation, and suppresses ERF95-promoted seed Fe accumulation. In addition, ERF95 binds to specific FER1 promoter GCC-boxes and transactivates FER1 expression. We show that ERF95 expression in maturing seed is dependent on EIN3, the master transcriptional regulator of ethylene signaling. While lack of EIN3 reduces seed Fe content, overexpression of ERF95 rescues Fe accumulation in the seed of ein3 loss-of-function mutant. Finally, we show that ethylene production increases during seed maturation. We conclude that ethylene promotes seed Fe accumulation during seed maturation via an EIN3-ERF95-FER1-dependent signaling pathway.
Collapse
Affiliation(s)
- Ying Sun
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jia Qi Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jing Ying Yan
- Agricultural Experimental Station, Zhejiang University, Hangzhou, 310058, China
| | - Jun Jie Yuan
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Gui Xin Li
- College of Agronomy and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Yun Rong Wu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ji Ming Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Rong Feng Huang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Nicholas P Harberd
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
- Department of Plant Science, University of Oxford, Oxford, OX1 3RB, United Kingdom
| | - Zhong Jie Ding
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shao Jian Zheng
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| |
Collapse
|
37
|
Feng X, Zhang H, Yu P. X-ray fluorescence application in food, feed, and agricultural science: a critical review. Crit Rev Food Sci Nutr 2020; 61:2340-2350. [PMID: 32543214 DOI: 10.1080/10408398.2020.1776677] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recently X-ray fluorescence techniques have been widely used in food and agricultural science areas. Minimal sample preparation, nondestructive analysis, high spatial resolution, and multiple elements measurements within a single sample are among its advantages. In this review, literature of X-ray fluorescence are extensively researched and summarized from food and agricultural science areas focusing on food safety inspection, food nutrition, plant science, soil science, and Ca-related problems in horticultural crops. In addition, the advantages and disadvantages of X-ray fluorescence comparing with traditional analytical techniques of elements are also discussed. The more advanced technology such as developments of detector, scanning system, beamline capability among others would significantly increase future application of X-ray fluorescence techniques. Combination use of XRF with other tools such as chemometrics or data analytics would greatly improve its prediction performance. These further improvements offer exciting perspectives for the application of X-ray fluorescence in the food and agricultural science areas.
Collapse
Affiliation(s)
- Xin Feng
- School of Life Science and Engineering, Foshan University, Foshan, China.,Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Canada
| | - Huihua Zhang
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Peiqiang Yu
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Canada
| |
Collapse
|
38
|
Kopittke PM, Lombi E, van der Ent A, Wang P, Laird JS, Moore KL, Persson DP, Husted S. Methods to Visualize Elements in Plants. PLANT PHYSIOLOGY 2020; 182:1869-1882. [PMID: 31974126 PMCID: PMC7140966 DOI: 10.1104/pp.19.01306] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 01/16/2020] [Indexed: 05/18/2023]
Abstract
Understanding the distribution of elements in plants is important for researchers across a broad range of fields, including plant molecular biology, agronomy, plant physiology, plant nutrition, and ionomics. However, it is often challenging to evaluate the applicability of the wide range of techniques available, with each having its own strengths and limitations. Here, we compare scanning/transmission electron microscopy-based energy-dispersive x-ray spectroscopy, x-ray fluorescence microscopy, particle-induced x-ray emission, laser ablation inductively coupled plasma-mass spectrometry, nanoscale secondary ion mass spectroscopy, autoradiography, and confocal microscopy with fluorophores. For these various techniques, we compare their accessibility, their ability to analyze hydrated tissues (without sample preparation) and suitability for in vivo analyses, as well as examining their most important analytical merits, such as resolution, sensitivity, depth of analysis, and the range of elements that can be analyzed. We hope that this information will assist other researchers to select, access, and evaluate the approach that is most useful in their particular research program or application.
Collapse
Affiliation(s)
- Peter M Kopittke
- University of Queensland, School of Agriculture and Food Sciences, St. Lucia, Queensland 4072, Australia
| | - Enzo Lombi
- University of South Australia, Future Industries Institute, Mawson Lakes, South Australia 5095, Australia
| | - Antony van der Ent
- University of Queensland, Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, St. Lucia, Queensland 4072, Australia
| | - Peng Wang
- Nanjing Agricultural University, College of Resources and Environmental Sciences, Nanjing 210095, China
| | - Jamie S Laird
- University of Melbourne, School of Physics, Parkville, Victoria 3010, Australia
| | - Katie L Moore
- University of Manchester, School of Materials, Photon Science Institute, Manchester M13 9PL, United Kingdom
| | - Daniel P Persson
- University of Copenhagen, Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, 1871 Frederiksberg, Denmark
| | - Søren Husted
- University of Copenhagen, Department of Plant and Environmental Sciences and Copenhagen Plant Science Centre, 1871 Frederiksberg, Denmark
| |
Collapse
|
39
|
Alejandro S, Höller S, Meier B, Peiter E. Manganese in Plants: From Acquisition to Subcellular Allocation. FRONTIERS IN PLANT SCIENCE 2020; 11:300. [PMID: 32273877 PMCID: PMC7113377 DOI: 10.3389/fpls.2020.00300] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/02/2020] [Indexed: 05/02/2023]
Abstract
Manganese (Mn) is an important micronutrient for plant growth and development and sustains metabolic roles within different plant cell compartments. The metal is an essential cofactor for the oxygen-evolving complex (OEC) of the photosynthetic machinery, catalyzing the water-splitting reaction in photosystem II (PSII). Despite the importance of Mn for photosynthesis and other processes, the physiological relevance of Mn uptake and compartmentation in plants has been underrated. The subcellular Mn homeostasis to maintain compartmented Mn-dependent metabolic processes like glycosylation, ROS scavenging, and photosynthesis is mediated by a multitude of transport proteins from diverse gene families. However, Mn homeostasis may be disturbed under suboptimal or excessive Mn availability. Mn deficiency is a serious, widespread plant nutritional disorder in dry, well-aerated and calcareous soils, as well as in soils containing high amounts of organic matter, where bio-availability of Mn can decrease far below the level that is required for normal plant growth. By contrast, Mn toxicity occurs on poorly drained and acidic soils in which high amounts of Mn are rendered available. Consequently, plants have evolved mechanisms to tightly regulate Mn uptake, trafficking, and storage. This review provides a comprehensive overview, with a focus on recent advances, on the multiple functions of transporters involved in Mn homeostasis, as well as their regulatory mechanisms in the plant's response to different conditions of Mn availability.
Collapse
Affiliation(s)
- Santiago Alejandro
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Salle), Germany
| | | | | | - Edgar Peiter
- Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Salle), Germany
| |
Collapse
|
40
|
Ibuot A, Dean AP, Pittman JK. Multi-genomic analysis of the cation diffusion facilitator transporters from algae. Metallomics 2020; 12:617-630. [PMID: 32195517 DOI: 10.1039/d0mt00009d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Metal transport processes are relatively poorly understood in algae in comparison to higher plants and other eukaryotes. A screen of genomes from 33 taxonomically diverse algal species was conducted to identify members of the Cation Diffusion Facilitator (CDF) family of metal ion transporter. All algal genomes contained at least one CDF gene with four species having >10 CDF genes (median of 5 genes per genome), further confirming that this is a ubiquitous gene family. Phylogenetic analysis suggested a CDF gene organisation of five groups, which includes Zn-CDF, Fe/Zn-CDF and Mn-CDF groups, consistent with previous phylogenetic analyses, and two functionally undefined groups. One of these undefined groups was algal specific although excluded chlorophyte and rhodophyte sequences. The majority of sequences (22 out of 26 sequences) from this group had a putative ion binding site motif within transmembrane domain 2 and 5 that was distinct from other CDF proteins, such that alanine or serine replaced the conserved histidine residue. The phylogenetic grouping was supported by sequence cluster analysis. Yeast heterologous expression of CDF proteins from Chlamydomonas reinhardtii indicated Zn2+ and Co2+ transport function by CrMTP1, and Mn2+ transport function by CrMTP2, CrMTP3 and CrMTP4, which validated the phylogenetic prediction. However, the Mn-CDF protein CrMTP3 was also able to provide zinc and cobalt tolerance to the Zn- and Co-sensitive zrc1 cot1 yeast strain. There is wide diversity of CDF transporters within the algae lineage, and some of these genes may be attractive targets for future applications of metal content engineering in plants or microorganisms.
Collapse
Affiliation(s)
- Aniefon Ibuot
- Department of Science Technology, Akwa Ibom State Polytechnic, P.M.B. 1200 Ikot Ekpene, Ikot Osurua, Akwa Ibom State, Nigeria
| | | | | |
Collapse
|
41
|
Gao Y, Yang F, Liu J, Xie W, Zhang L, Chen Z, Peng Z, Ou Y, Yao Y. Genome-Wide Identification of Metal Tolerance Protein Genes in Populus trichocarpa and Their Roles in Response to Various Heavy Metal Stresses. Int J Mol Sci 2020; 21:ijms21051680. [PMID: 32121430 PMCID: PMC7084629 DOI: 10.3390/ijms21051680] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 02/26/2020] [Accepted: 02/27/2020] [Indexed: 01/22/2023] Open
Abstract
Metal tolerance proteins (MTPs) are plant divalent cation transporters that play important roles in plant metal tolerance and homeostasis. Poplar is an ideal candidate for the phytoremediation of heavy metals because of its numerous beneficial attributes. However, the definitive phylogeny and heavy metal transport mechanisms of the MTP family in poplar remain unknown. Here, 22 MTP genes in P. trichocarpa were identified and classified into three major clusters and seven groups according to phylogenetic relationships. An evolutionary analysis suggested that PtrMTP genes had undergone gene expansion through tandem or segmental duplication events. Moreover, all PtrMTPs were predicted to localize in the vacuole and/or cell membrane, and contained typical structural features of the MTP family, cation efflux domain. The temporal and spatial expression pattern analysis results indicated the involvement of PtrMTP genes in poplar developmental control. Under heavy metal stress, most of PtrMTP genes were induced by at least two metal ions in roots, stems or leaves. In addition, PtrMTP8.1, PtrMTP9 and PtrMTP10.4 displayed the ability of Mn transport in yeast cells, and PtrMTP6 could transport Co, Fe and Mn. These findings will provide an important foundation to elucidate the biological functions of PtrMTP genes, and especially their role in regulating heavy metal tolerance in poplar.
Collapse
|
42
|
Profile of Mary Lou Guerinot. Proc Natl Acad Sci U S A 2020; 117:1246-1248. [DOI: 10.1073/pnas.1921933117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
43
|
Handing off iron to the next generation: how does it get into seeds and what for? Biochem J 2020; 477:259-274. [DOI: 10.1042/bcj20190188] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/18/2019] [Accepted: 12/23/2019] [Indexed: 01/24/2023]
Abstract
To ensure the success of the new generation in annual species, the mother plant transfers a large proportion of the nutrients it has accumulated during its vegetative life to the next generation through its seeds. Iron (Fe) is required in large amounts to provide the energy and redox power to sustain seedling growth. However, free Fe is highly toxic as it leads to the generation of reactive oxygen species. Fe must, therefore, be tightly bound to chelating molecules to allow seed survival for long periods of time without oxidative damage. Nevertheless, when conditions are favorable, the seed's Fe stores have to be readily remobilized to achieve the transition toward active photosynthesis before the seedling becomes able to take up Fe from the environment. This is likely critical for the vigor of the young plant. Seeds constitute an important dietary source of Fe, which is essential for human health. Understanding the mechanisms of Fe storage in seeds is a key to improve their Fe content and availability in order to fight Fe deficiency. Seed longevity, germination efficiency and seedling vigor are also important traits that may be affected by the chemical form under which Fe is stored. In this review, we summarize the current knowledge on seed Fe loading during development, long-term storage and remobilization upon germination. We highlight how this knowledge may help seed Fe biofortification and discuss how Fe storage may affect the seed quality and germination efficiency.
Collapse
|
44
|
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.
Collapse
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.
| |
Collapse
|
45
|
Belykh ES, Maystrenko TA, Velegzhaninov IO. Recent Trends in Enhancing the Resistance of Cultivated Plants to Heavy Metal Stress by Transgenesis and Transcriptional Programming. Mol Biotechnol 2019; 61:725-741. [DOI: 10.1007/s12033-019-00202-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
46
|
Schmidt W. The Yin and Yang of Iron in Plants and Beyond: 19th International Symposium on Iron Nutrition and Interactions in Plants (ISINIP) in Taiwan. PLANT & CELL PHYSIOLOGY 2019; 60:1401-1404. [PMID: 31076754 DOI: 10.1093/pcp/pcz066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 04/05/2019] [Indexed: 06/09/2023]
Abstract
The19th edition of the International Symposium on Iron Nutrition and Interactions in Plants, a biannual meeting initiated in 1981, took place in Taiwan for the first time. The five-day event was held at the Academia Sinica campus in the Southeast of Taiwan's capital city Taipei, and hosted around 200 scientists from around the world. The meeting covered a diverse array of topics centered around iron nutrition, including but not limited to soil processes, biofortification, transport, signaling and molecular processes regulating the cellular homeostasis of iron. Here, I review the research foci highlighted during the meeting by oral and poster presentations.
Collapse
Affiliation(s)
- Wolfgang Schmidt
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| |
Collapse
|
47
|
Khan I, Gratz R, Denezhkin P, Schott-Verdugo SN, Angrand K, Genders L, Basgaran RM, Fink-Straube C, Brumbarova T, Gohlke H, Bauer P, Ivanov R. Calcium-Promoted Interaction between the C2-Domain Protein EHB1 and Metal Transporter IRT1 Inhibits Arabidopsis Iron Acquisition. PLANT PHYSIOLOGY 2019; 180:1564-1581. [PMID: 31040174 PMCID: PMC6752929 DOI: 10.1104/pp.19.00163] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/12/2019] [Indexed: 05/19/2023]
Abstract
Iron is a key transition element in the biosphere and is crucial for living organisms, although its cellular excess can be deleterious. Maintaining the balance of optimal iron availability in the model plant Arabidopsis (Arabidopsis thaliana) requires the precise operation of iron import through the principal iron transporter IRON-REGULATED TRANSPORTER1 (IRT1). Targeted inhibition of IRT1 can prevent oxidative stress, thus promoting plant survival. Here, we report the identification of an IRT1 inhibitor, namely the C2 domain-containing peripheral membrane protein ENHANCED BENDING1 (EHB1). EHB1 interacts with the cytoplasmically exposed variable region of IRT1, and we demonstrate that this interaction is greatly promoted by the presence of calcium. We found that EHB1 binds lipids characteristic of the plasma membrane, and the interaction between EHB1 and plant membranes is calcium-dependent. Molecular simulations showed that EHB1 membrane binding is a two-step process that precedes the interaction between EHB1 and IRT1. Genetic and physiological analyses indicated that EHB1 acts as a negative regulator of iron acquisition. The presence of EHB1 prevented the IRT1-mediated complementation of iron-deficient fet3fet4 yeast (Saccharomyces cerevisiae). Our data suggest that EHB1 acts as a direct inhibitor of IRT1-mediated iron import into the cell. These findings represent a major step in understanding plant iron acquisition, a process that underlies the primary production of bioavailable iron for land ecosystems.
Collapse
Affiliation(s)
- Imran Khan
- Institute of Botany, Heinrich-Heine University, D-40225 Düsseldorf, Germany
| | - Regina Gratz
- Institute of Botany, Heinrich-Heine University, D-40225 Düsseldorf, Germany
- Former address: Department of Biosciences-Plant Biology, Saarland University, D-66123 Saarbrücken, Germany
| | - Polina Denezhkin
- Former address: Department of Biosciences-Plant Biology, Saarland University, D-66123 Saarbrücken, Germany
| | - Stephan N Schott-Verdugo
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine University, D-40225 Düsseldorf, Germany
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, CL-3460000 Talca, Chile
| | - Kalina Angrand
- Former address: Department of Biosciences-Plant Biology, Saarland University, D-66123 Saarbrücken, Germany
| | - Lara Genders
- Institute of Botany, Heinrich-Heine University, D-40225 Düsseldorf, Germany
| | | | | | - Tzvetina Brumbarova
- Institute of Botany, Heinrich-Heine University, D-40225 Düsseldorf, Germany
- Former address: Department of Biosciences-Plant Biology, Saarland University, D-66123 Saarbrücken, Germany
| | - Holger Gohlke
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine University, D-40225 Düsseldorf, Germany
- John von Neumann Institute for Computing, Jülich Supercomputing Centre & Institute of Complex Systems, ICS-6: Structural Biochemistry, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - Petra Bauer
- Institute of Botany, Heinrich-Heine University, D-40225 Düsseldorf, Germany
- Former address: Department of Biosciences-Plant Biology, Saarland University, D-66123 Saarbrücken, Germany
- Cluster of Excellence on Plant Sciences, Heinrich-Heine University, D-40225 Düsseldorf, Germany
| | - Rumen Ivanov
- Institute of Botany, Heinrich-Heine University, D-40225 Düsseldorf, Germany
- Former address: Department of Biosciences-Plant Biology, Saarland University, D-66123 Saarbrücken, Germany
| |
Collapse
|
48
|
Vigani G, Solti ÏDM, Thomine SB, Philippar K. Essential and Detrimental - an Update on Intracellular Iron Trafficking and Homeostasis. PLANT & CELL PHYSIOLOGY 2019; 60:1420-1439. [PMID: 31093670 DOI: 10.1093/pcp/pcz091] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 05/06/2019] [Indexed: 05/22/2023]
Abstract
Chloroplasts, mitochondria and vacuoles represent characteristic organelles of the plant cell, with a predominant function in cellular metabolism. Chloroplasts are the site of photosynthesis and therefore basic and essential for photoautotrophic growth of plants. Mitochondria produce energy during respiration and vacuoles act as internal waste and storage compartments. Moreover, chloroplasts and mitochondria are sites for the biosynthesis of various compounds of primary and secondary metabolism. For photosynthesis and energy generation, the internal membranes of chloroplasts and mitochondria are equipped with electron transport chains. To perform proper electron transfer and several biosynthetic functions, both organelles contain transition metals and here iron is by far the most abundant. Although iron is thus essential for plant growth and development, it becomes toxic when present in excess and/or in its free, ionic form. The harmful effect of the latter is caused by the generation of oxidative stress. As a consequence, iron transport and homeostasis have to be tightly controlled during plant growth and development. In addition to the corresponding transport and homeostasis proteins, the vacuole plays an important role as an intracellular iron storage and release compartment at certain developmental stages. In this review, we will summarize current knowledge on iron transport and homeostasis in chloroplasts, mitochondria and vacuoles. In addition, we aim to integrate the physiological impact of intracellular iron homeostasis on cellular and developmental processes.
Collapse
Affiliation(s)
- Gianpiero Vigani
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, via Quarello 15/A, Turin I, Italy
| | - Ï Dï M Solti
- Department of Plant Physiology and Molecular Plant Biology, E�tv�s Lor�nd University, Budapest H, Hungary
| | - Sï Bastien Thomine
- Institut de Biologie Int�grative de la Cellule, CNRS, Avenue de la Terrasse, Gif-sur-Yvette, France
| | - Katrin Philippar
- Plant Biology, Center for Human- and Molecular Biology (ZHMB), Saarland University, Campus A2.4, Saarbr�cken D, Germany
| |
Collapse
|
49
|
Liu J, Gao Y, Tang Y, Wang D, Chen X, Yao Y, Guo Y. Genome-Wide Identification, Comprehensive Gene Feature, Evolution, and Expression Analysis of Plant Metal Tolerance Proteins in Tobacco Under Heavy Metal Toxicity. Front Genet 2019; 10:345. [PMID: 31105736 PMCID: PMC6491887 DOI: 10.3389/fgene.2019.00345] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 03/29/2019] [Indexed: 11/13/2022] Open
Abstract
Plant metal tolerance proteins (MTPs) comprise a family of membrane divalent cation transporters that play essential roles in plant mineral nutrition maintenance and heavy metal stresses resistance. However, the evolutionary relationships and biological functions of MTP family in tobacco remain unclear. In the present study, 26, 13, and 12 MTPs in three main Nicotiana species (N. tabacum, N. sylvestris, and N. tomentosiformis) were identified and designated, respectively. The phylogenetic relationships, gene structures, chromosome distributions, conserved motifs, and domains of NtMTPs were systematic analyzed. According to the phylogenetic features, 26 NtMTPs were classified into three major substrate-specific groups that were Zn-cation diffusion facilitators (CDFs), Zn/Fe-CDFs, and Mn-CDFs, and seven primary groups (1, 5, 6, 7, 8, 9, and 12). All of the NtMTPs contained a modified signature sequence and the cation_efflux domain, whereas some of them also harbored the ZT_dimer. Evolutionary analysis showed that NtMTP family of N. tabacum originated from its parental genome of N. sylvestris and N. tomentosiformis, and further underwent gene loss and expanded via one segmental duplication event. Moreover, the prediction of cis-acting elements (CREs) and the microRNA target sites of NtMTP genes suggested the diverse and complex regulatory mechanisms that control NtMTPs gene expression. Expression profile analysis derived from transcriptome data and quantitative real-time reverse transcription-PCR (qRT-PCR) analysis showed that the tissue expression patterns of NtMTPs in the same group were similar but varied among groups. Besides, under heavy metal toxicity, NtMTP genes exhibited various responses in either tobacco leaves or roots. 19 and 15 NtMTPs were found to response to at least one metal ion treatment in leaves and roots, respectively. In addition, NtMTP8.1, NtMTP8.4, and NtMTP11.1 exhibited Mn transport abilities in yeast cells. These results provided a perspective on the evolution of MTP genes in tobacco and were helpful for further functional characterization of NtMTP genes.
Collapse
Affiliation(s)
- Jikai Liu
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - Yongfeng Gao
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Yunlai Tang
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - Dan Wang
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - XiaoMing Chen
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China.,State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang, China
| | - Yinan Yao
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Yaoling Guo
- School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang, China
| |
Collapse
|
50
|
Migocka M, Maciaszczyk-Dziubinska E, Małas K, Posyniak E, Garbiec A. Metal tolerance protein MTP6 affects mitochondrial iron and manganese homeostasis in cucumber. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:285-300. [PMID: 30304441 PMCID: PMC6305187 DOI: 10.1093/jxb/ery342] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 09/24/2018] [Indexed: 05/24/2023]
Abstract
Members of the cation diffusion facilitator (CDF) family have been identified in all kingdoms of life. They have been divided into three subgroups, namely Zn-CDF, Fe/Zn-CDF, and Mn-CDF, based on their putative specificity to transported metal ions. The plant metal tolerance protein 6 (MTP6) proteins fall into the Fe/Zn-CDF subgroup; however, their function in iron/zinc transport has not yet been confirmed. Here, we characterized the MTP6 protein from cucumber, Cucumis sativus. When expressed in yeast and in protoplasts isolated from Arabidopsis cells, CsMTP6 localized in mitochondria and contributed to the efflux of Fe and Mn from these organelles. Immunolocalization of CsMTP6 in cucumber membranes confirmed this association with mitochondria. Root expression and protein levels of CsMTP6 were significantly up-regulated in conditions of Fe deficiency and excess, but were not affected by Mn availability. These results indicate that MTP6 proteins contribute to the distribution of Fe and Mn between the cytosol and mitochondria of plant cells, and are regulated by Fe to maintain mitochondrial and cytosolic iron homeostasis under varying conditions of Fe availability.
Collapse
Affiliation(s)
- Magdalena Migocka
- University of Wroclaw, Institute of Experimental Biology, Department of Plant Molecular Physiology, Kanonia, Wroclaw, Poland
| | - Ewa Maciaszczyk-Dziubinska
- University of Wroclaw, Institute of Experimental Biology, Department of Genetics and Cell Physiology, Kanonia, Wroclaw, Poland
| | - Karolina Małas
- University of Wroclaw, Institute of Experimental Biology, Department of Plant Molecular Physiology, Kanonia, Wroclaw, Poland
| | - Ewelina Posyniak
- University of Wroclaw, Institute of Experimental Biology, Department of Animal Developmental Biology, Sienkiewicza, Wroclaw, Poland
| | - Arnold Garbiec
- University of Wroclaw, Institute of Experimental Biology, Department of Animal Developmental Biology, Sienkiewicza, Wroclaw, Poland
| |
Collapse
|