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Ding AM, Xu CT, Xie Q, Zhang MJ, Yan N, Dai CB, Lv J, Cui MM, Wang WF, Sun YH. ERF4 interacts with and antagonizes TCP15 in regulating endoreduplication and cell growth in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:1673-1689. [PMID: 35775119 DOI: 10.1111/jipb.13323] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Endoreduplication is prevalent during plant growth and development, and is often correlated with large cell and organ size. Despite its prevalence, the transcriptional regulatory mechanisms underlying the transition from mitotic cell division to endoreduplication remain elusive. Here, we characterize ETHYLENE-RESPONSIVE ELEMENT BINDING FACTOR 4 (ERF4) as a positive regulator of endoreduplication through its function as a transcriptional repressor. ERF4 was specifically expressed in mature tissues in which the cells were undergoing expansion, but was rarely expressed in young organs. Plants overexpressing ERF4 exhibited much larger cells and organs, while plants that lacked functional ERF4 displayed smaller organs than the wild-type. ERF4 was further shown to regulate cell size by controlling the endopolyploidy level in the nuclei. Moreover, ERF4 physically associates with the class I TEOSINTE BRANCHED 1/CYCLOIDEA/PCF (TCP) protein TCP15, a transcription factor that inhibits endoreduplication by activating the expression of a key cell-cycle gene, CYCLIN A2;3 (CYCA2;3). A molecular and genetic analysis revealed that ERF4 promotes endoreduplication by directly suppressing the expression of CYCA2;3. Together, this study demonstrates that ERF4 and TCP15 function as a module to antagonistically regulate each other's activity in regulating downstream genes, thereby controlling the switch from the mitotic cell cycle to endoreduplication during leaf development. These findings expand our understanding of how the control of the cell cycle is fine-tuned by an ERF4-TCP15 transcriptional complex.
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Affiliation(s)
- An-Ming Ding
- Key Laboratory of Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, China
| | - Chuan-Tao Xu
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
- Luzhou Tobacco Company of Sichuan Province, Luzhou, 646000, China
| | - Qiang Xie
- Luzhou Tobacco Company of Sichuan Province, Luzhou, 646000, China
| | - Ming-Jin Zhang
- Luzhou Tobacco Company of Sichuan Province, Luzhou, 646000, China
| | - Ning Yan
- Key Laboratory of Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, China
| | - Chang-Bo Dai
- Key Laboratory of Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, China
| | - Jing Lv
- Key Laboratory of Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, China
| | - Meng-Meng Cui
- Key Laboratory of Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, China
| | - Wei-Feng Wang
- Key Laboratory of Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, China
| | - Yu-He Sun
- Key Laboratory of Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Qingdao, 266101, China
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2
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Sliwinska E, Loureiro J, Leitch IJ, Šmarda P, Bainard J, Bureš P, Chumová Z, Horová L, Koutecký P, Lučanová M, Trávníček P, Galbraith DW. Application-based guidelines for best practices in plant flow cytometry. Cytometry A 2021; 101:749-781. [PMID: 34585818 DOI: 10.1002/cyto.a.24499] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/10/2021] [Accepted: 08/26/2021] [Indexed: 12/15/2022]
Abstract
Flow cytometry (FCM) is currently the most widely-used method to establish nuclear DNA content in plants. Since simple, 1-3-parameter, flow cytometers, which are sufficient for most plant applications, are commercially available at a reasonable price, the number of laboratories equipped with these instruments, and consequently new FCM users, has greatly increased over the last decade. This paper meets an urgent need for comprehensive recommendations for best practices in FCM for different plant science applications. We discuss advantages and limitations of establishing plant ploidy, genome size, DNA base composition, cell cycle activity, and level of endoreduplication. Applications of such measurements in plant systematics, ecology, molecular biology research, reproduction biology, tissue cultures, plant breeding, and seed sciences are described. Advice is included on how to obtain accurate and reliable results, as well as how to manage troubleshooting that may occur during sample preparation, cytometric measurements, and data handling. Each section is followed by best practice recommendations; tips as to what specific information should be provided in FCM papers are also provided.
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Affiliation(s)
- Elwira Sliwinska
- Laboratory of Molecular Biology and Cytometry, Department of Agricultural Biotechnology, UTP University of Science and Technology, Bydgoszcz, Poland
| | - João Loureiro
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Ilia J Leitch
- Kew Science Directorate, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
| | - Petr Šmarda
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jillian Bainard
- Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, Saskatchewan, Canada
| | - Petr Bureš
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Zuzana Chumová
- Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic.,Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic
| | - Lucie Horová
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Petr Koutecký
- Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Magdalena Lučanová
- Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic.,Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Pavel Trávníček
- Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic
| | - David W Galbraith
- School of Plant Sciences, BIO5 Institute, Arizona Cancer Center, Department of Biomedical Engineering, University of Arizona, Tucson, Arizona, USA.,Henan University, School of Life Sciences, State Key Laboratory of Crop Stress Adaptation and Improvement, State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, Kaifeng, China
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3
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Čertner M, Lučanová M, Sliwinska E, Kolář F, Loureiro J. Plant material selection, collection, preservation, and storage for nuclear DNA content estimation. Cytometry A 2021; 101:737-748. [PMID: 34254737 DOI: 10.1002/cyto.a.24482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 01/23/2023]
Abstract
In theory, any plant tissue providing intact nuclei in sufficient quantity is suitable for nuclear DNA content estimation using flow cytometry (FCM). While this certainly opens a wide variety of possible applications of FCM, especially when compared to classical karyological techniques restricted to tissues with active cell division, tissue selection and quality may directly affect the precision (and sometimes even reliability) of FCM measurements. It is usually convenient to first consider the goals of the study to either aim for the highest possible accuracy of estimates (e.g., for inferring genome size, detecting homoploid intraspecific genome size variation, aneuploidy, among others), or to decide that histograms of reasonable resolution provide sufficient information (e.g., ploidy level screening within a single model species). Here, a set of best practices guidelines for selecting the optimal plant tissue for FCM analysis, sampling of material, and material preservation and storage are provided. In addition, factors potentially compromising the quality of FCM estimates of nuclear DNA content and data interpretation are discussed.
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Affiliation(s)
- Martin Čertner
- Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic.,Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic
| | - Magdalena Lučanová
- Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic.,Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Elwira Sliwinska
- Laboratory of Molecular Biology and Cytometry, Department of Agricultural Biotechnology, UTP University of Science and Technology, Bydgoszcz, Poland
| | - Filip Kolář
- Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic.,Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic
| | - João Loureiro
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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4
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Evaluation of endopolyploidy patterns in selected Capsicum and Nicotiana species (Solanaceae). Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00704-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Delgado-García E, Piedras P, Gómez-Baena G, García-Magdaleno IM, Pineda M, Gálvez-Valdivieso G. Nucleoside Metabolism Is Induced in Common Bean During Early Seedling Development. FRONTIERS IN PLANT SCIENCE 2021; 12:651015. [PMID: 33841480 PMCID: PMC8027947 DOI: 10.3389/fpls.2021.651015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Nucleoside hydrolases (NSH; nucleosidases) catalyze the cleavage of nucleosides into ribose and free nucleobases. These enzymes have been postulated as key elements controlling the ratio between nucleotide salvage and degradation. Moreover, they play a pivotal role in ureidic legumes by providing the substrate for the synthesis of ureides. Furthermore, nucleotide metabolism has a crucial role during germination and early seedling development, since the developing seedlings require high amount of nucleotide simultaneously to the mobilization of nutrient in cotyledons. In this study, we have cloned two nucleosidases genes from Phaseolus vulgaris, PvNSH1 and PvNSH2, expressed them as recombinant proteins, and characterized their catalytic activities. Both enzymes showed a broad range of substrate affinity; however, PvNSH1 exhibited the highest activity with uridine, followed by xanthosine, whereas PvNSH2 hydrolyses preferentially xanthosine and shows low activity with uridine. The study of the regulation of nucleosidases during germination and early postgerminative development indicated that nucleosidases are induced in cotyledons and embryonic axes just after the radicle emergence, coincident with the induction of nucleases activity and the synthesis of ureides in the embryonic axes, with no remarkable differences in the level of expression of both nucleosidase genes. In addition, nucleosides and nucleobase levels were determined as well in cotyledons and embryonic axes. Our results suggest that PvNSH1 and PvNSH2 play an important role in the mobilization of nutrients during this crucial stage of plant development.
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Affiliation(s)
- Elena Delgado-García
- Departamento de Botánica, Ecología y Fisiología Vegetal. Grupo de Fisiología Molecular y Biotecnología de Plantas. Campus de Excelencia Internacional en Agroalimentación, Campus de Rabanales, Edif. Severo Ochoa, Universidad de Córdoba, Córdoba, Spain
| | - Pedro Piedras
- Departamento de Botánica, Ecología y Fisiología Vegetal. Grupo de Fisiología Molecular y Biotecnología de Plantas. Campus de Excelencia Internacional en Agroalimentación, Campus de Rabanales, Edif. Severo Ochoa, Universidad de Córdoba, Córdoba, Spain
| | - Guadalupe Gómez-Baena
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional en Agroalimentación, Campus de Rabanales, Edif. Severo Ochoa, Universidad de Córdoba, Córdoba, Spain
| | - Isabel M. García-Magdaleno
- Servicio Central de Apoyo a la Investigación (SCAI), Unidad de Espectrometría de Masas y Cromatografía, Campus de Rabanales, Universidad de Córdoba, Córdoba, Spain
| | - Manuel Pineda
- Departamento de Botánica, Ecología y Fisiología Vegetal. Grupo de Fisiología Molecular y Biotecnología de Plantas. Campus de Excelencia Internacional en Agroalimentación, Campus de Rabanales, Edif. Severo Ochoa, Universidad de Córdoba, Córdoba, Spain
| | - Gregorio Gálvez-Valdivieso
- Departamento de Botánica, Ecología y Fisiología Vegetal. Grupo de Fisiología Molecular y Biotecnología de Plantas. Campus de Excelencia Internacional en Agroalimentación, Campus de Rabanales, Edif. Severo Ochoa, Universidad de Córdoba, Córdoba, Spain
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6
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Steinbrecher T, Leubner-Metzger G. Tissue and cellular mechanics of seeds. Curr Opin Genet Dev 2018; 51:1-10. [PMID: 29571069 DOI: 10.1016/j.gde.2018.03.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/27/2018] [Accepted: 03/01/2018] [Indexed: 01/17/2023]
Abstract
Distinct plant seed/fruit structures evolved to support reproduction and dispersal in distinct environments. Appropriate biomechanical properties and interactions of the various seed compartments are indispensable to plant survival. Most seeds are dispersed in a dry state generated during seed development/maturation for which novel aspects of endosperm-embryo interaction were discovered. The various layers covering the embryo of a mature seed define the patterns of water uptake during germination. Their biomechanical weakening together with embryo cell expansion is mediated by cell wall remodelling to facilitate radicle protrusion. Recent work with different species has revealed mechanisms underpinning specific embryo growth zones. Abiotic and biotic factors were shown to release different types of seed and fruit coat-mediated constraints to water uptake and germination.
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Affiliation(s)
- Tina Steinbrecher
- School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK(1).
| | - Gerhard Leubner-Metzger
- School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK(1).
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Meitha K, Konnerup D, Colmer TD, Considine JA, Foyer CH, Considine MJ. Spatio-temporal relief from hypoxia and production of reactive oxygen species during bud burst in grapevine (Vitis vinifera). ANNALS OF BOTANY 2015; 116:703-11. [PMID: 26337519 PMCID: PMC4578006 DOI: 10.1093/aob/mcv123] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 07/01/2015] [Indexed: 05/03/2023]
Abstract
BACKGROUND AND AIMS Plants regulate cellular oxygen partial pressures (pO2), together with reduction/oxidation (redox) state in order to manage rapid developmental transitions such as bud burst after a period of quiescence. However, our understanding of pO2 regulation in complex meristematic organs such as buds is incomplete and, in particular, lacks spatial resolution. METHODS The gradients in pO2 from the outer scales to the primary meristem complex were measured in grapevine (Vitis vinifera) buds, together with respiratory CO2 production rates and the accumulation of superoxide and hydrogen peroxide, from ecodormancy through the first 72 h preceding bud burst, triggered by the transition from low to ambient temperatures. KEY RESULTS Steep internal pO2 gradients were measured in dormant buds with values as low as 2·5 kPa found in the core of the bud prior to bud burst. Respiratory CO2 production rates increased soon after the transition from low to ambient temperatures and the bud tissues gradually became oxygenated in a patterned process. Within 3 h of the transition to ambient temperatures, superoxide accumulation was observed in the cambial meristem, co-localizing with lignified cellulose associated with pro-vascular tissues. Thereafter, superoxide accumulated in other areas subtending the apical meristem complex, in the absence of significant hydrogen peroxide accumulation, except in the cambial meristem. By 72 h, the internal pO2 gradient showed a biphasic profile, where the minimum pO2 was external to the core of the bud complex. CONCLUSIONS Spatial and temporal control of the tissue oxygen environment occurs within quiescent buds, and the transition from quiescence to bud burst is accompanied by a regulated relaxation of the hypoxic state and accumulation of reactive oxygen species within the developing cambium and vascular tissues of the heterotrophic grapevine buds.
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Affiliation(s)
- Karlia Meitha
- School of Plant Biology, and The Institute of Agriculture, The University of Western Australia, Crawley, WA, 6009 Australia
| | - Dennis Konnerup
- School of Plant Biology, and The Institute of Agriculture, The University of Western Australia, Crawley, WA, 6009 Australia, Freshwater Biological Laboratory, Department of Biology, University of Copenhagen, Universitetsparken 4, 2100 Copenhagen, Denmark
| | - Timothy D Colmer
- School of Plant Biology, and The Institute of Agriculture, The University of Western Australia, Crawley, WA, 6009 Australia
| | - John A Considine
- School of Plant Biology, and The Institute of Agriculture, The University of Western Australia, Crawley, WA, 6009 Australia
| | - Christine H Foyer
- School of Plant Biology, and The Institute of Agriculture, The University of Western Australia, Crawley, WA, 6009 Australia, Centre for Plant Sciences, University of Leeds, Leeds, Yorkshire LS29JT, UK and
| | - Michael J Considine
- School of Plant Biology, and The Institute of Agriculture, The University of Western Australia, Crawley, WA, 6009 Australia, Centre for Plant Sciences, University of Leeds, Leeds, Yorkshire LS29JT, UK and Department of Agriculture and Food Western Australia, South Perth, WA, 6151 Australia
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8
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Cabello-Díaz JM, Gálvez-Valdivieso G, Caballo C, Lambert R, Quiles FA, Pineda M, Piedras P. Identification and characterization of a gene encoding for a nucleotidase from Phaseolus vulgaris. JOURNAL OF PLANT PHYSIOLOGY 2015; 185:44-51. [PMID: 26276404 DOI: 10.1016/j.jplph.2015.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 07/07/2015] [Accepted: 07/07/2015] [Indexed: 06/04/2023]
Abstract
Nucleotidases are phosphatases that catalyze the removal of phosphate from nucleotides, compounds with an important role in plant metabolism. A phosphatase enzyme, with high affinity for nucleotides monophosphate previously identified and purified in embryonic axes from French bean, has been analyzed by MALDI TOF/TOF and two internal peptides have been obtained. The information of these peptide sequences has been used to search in the genome database and only a candidate gene that encodes for the phosphatase was identified (PvNTD1). The putative protein contains the conserved domains (motif I-IV) for haloacid dehalogenase-like hydrolases superfamily. The residues involved in the catalytic activity are also conserved. A recombinant protein overexpressed in Escherichia coli has shown molybdate resistant phosphatase activity with nucleosides monophosphate as substrate, confirming that the identified gene encodes for the phosphatase with high affinity for nucleotides purified in French bean embryonic axes. The activity of the purified protein was inhibited by adenosine. The expression of PvNTD1 gene was induced at the specific moment of radicle protrusion in embryonic axes. The gene was also highly expressed in young leaves whereas the level of expression in mature tissues was minimal.
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Affiliation(s)
- Juan Miguel Cabello-Díaz
- Departamento de Botánica, Ecología y Fisiología Vegetal, Grupo de Fisiología Molecular y Biotecnología de Plantas, Campus Rabanales, Edif. Severo Ochoa, 1ª Planta, Universidad de Córdoba, 14071 Córdoba, Spain
| | - Gregorio Gálvez-Valdivieso
- Departamento de Botánica, Ecología y Fisiología Vegetal, Grupo de Fisiología Molecular y Biotecnología de Plantas, Campus Rabanales, Edif. Severo Ochoa, 1ª Planta, Universidad de Córdoba, 14071 Córdoba, Spain
| | - Cristina Caballo
- Departamento de Botánica, Ecología y Fisiología Vegetal, Grupo de Fisiología Molecular y Biotecnología de Plantas, Campus Rabanales, Edif. Severo Ochoa, 1ª Planta, Universidad de Córdoba, 14071 Córdoba, Spain
| | - Rocío Lambert
- Departamento de Botánica, Ecología y Fisiología Vegetal, Grupo de Fisiología Molecular y Biotecnología de Plantas, Campus Rabanales, Edif. Severo Ochoa, 1ª Planta, Universidad de Córdoba, 14071 Córdoba, Spain
| | - Francisco Antonio Quiles
- Departamento de Botánica, Ecología y Fisiología Vegetal, Grupo de Fisiología Molecular y Biotecnología de Plantas, Campus Rabanales, Edif. Severo Ochoa, 1ª Planta, Universidad de Córdoba, 14071 Córdoba, Spain
| | - Manuel Pineda
- Departamento de Botánica, Ecología y Fisiología Vegetal, Grupo de Fisiología Molecular y Biotecnología de Plantas, Campus Rabanales, Edif. Severo Ochoa, 1ª Planta, Universidad de Córdoba, 14071 Córdoba, Spain
| | - Pedro Piedras
- Departamento de Botánica, Ecología y Fisiología Vegetal, Grupo de Fisiología Molecular y Biotecnología de Plantas, Campus Rabanales, Edif. Severo Ochoa, 1ª Planta, Universidad de Córdoba, 14071 Córdoba, Spain.
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