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Yu L, Zhang H, Guan R, Li Y, Guo Y, Qiu L. Genome-Wide Tissue-Specific Genes Identification for Novel Tissue-Specific Promoters Discovery in Soybean. Genes (Basel) 2023; 14:1150. [PMID: 37372330 DOI: 10.3390/genes14061150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/18/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
Promoters play a crucial role in controlling the spatial and temporal expression of genes at transcriptional levels in the process of higher plant growth and development. The spatial, efficient, and correct regulation of exogenous genes expression, as desired, is the key point in plant genetic engineering research. Constitutive promoters widely used in plant genetic transformation are limited because, sometimes, they may cause potential negative effects. This issue can be solved, to a certain extent, by using tissue-specific promoters. Compared with constitutive promoters, a few tissue-specific promoters have been isolated and applied. In this study, based on the transcriptome data, a total of 288 tissue-specific genes were collected, expressed in seven tissues, including the leaves, stems, flowers, pods, seeds, roots, and nodules of soybean (Glycine max). KEGG pathway enrichment analysis was carried out, and 52 metabolites were annotated. A total of 12 tissue-specific genes were selected via the transcription expression level and validated through real-time quantitative PCR, of which 10 genes showed tissue-specific expression. The 3-kb 5' upstream regions of ten genes were obtained as putative promoters. Further analysis showed that all the 10 promoters contained many tissue-specific cis-elements. These results demonstrate that high-throughput transcriptional data can be used as effective tools, providing a guide for high-throughput novel tissue-specific promoter discovery.
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Affiliation(s)
- Lili Yu
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Hao Zhang
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Rongxia Guan
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yinghui Li
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yong Guo
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lijuan Qiu
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Chenarani N, Emamjomeh A, Rahnama H, Zamani K, Solouki M. Characterization of sucrose binding protein as a seed-specific promoter in transgenic tobacco Nicotiana tabacum L. PLoS One 2022; 17:e0268036. [PMID: 35657906 PMCID: PMC9165846 DOI: 10.1371/journal.pone.0268036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 04/20/2022] [Indexed: 11/24/2022] Open
Abstract
Seed-specific expression using appropriate promoters is a recommended strategy for the efficiently producing valuable metabolites in transgenic plants. In the present study, we investigated the sequence of sucrose binding protein (SBP) as a seed-specific promoter to find the cis-acting elements specific to gene expression in seeds. The 1860 bp SBP sequence was analyzed using Plant Care and PLACE databases to find cis-acting elements, which resulted in a finding of 22 cis-acting elements required for seed expression. In addition, we have discovered cis- acting elements that are indirectly involved in triacylglycerol synthesis (GATABOX, DOFCOREZM, CACGTGMOTIF). The seed specificity of SBP was analyzed by generating a stable transgenic tobacco plant harboring β-glucuronidase (GUS) reporter gene under the control of the SBP promoter. Histochemical analysis of these transgenic tobacco plants indicated decreasing GUS activity in the leaves during the vegetative stage. However, the mature seeds of transgenic plants showed GUS activity. Moreover, the SBP promoter function in the seed oil content was evaluated by the expression of DGAT1. The expression analysis of DGAT1 in SBP-DGAT1 transgenic tobacco seeds using quantitative real-time PCR revealed a 7.8-fold increase in DGAT1 than in non-transgenic plants. Moreover, oil content increased up to 2.19 times more than in non-transgenic plants. And the oil content of the SBP-DGAT1 transgenic tobacco leaves did not change compared to the control plant. Therefore, we suggested that the SBP promoter could be used as a seed-specific promoter for targeted expression of desired genes in the metabolite engineering of oilseed crops.
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Affiliation(s)
- Nasibeh Chenarani
- Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Zabol, Iran
| | - Abbasali Emamjomeh
- Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Zabol, Iran
- Department of Bioinformatics, Laboratory of Computational Biotechnology and Bioinformatics (CBB Lab), University of Zabol, Zabol, Iran
| | - Hassan Rahnama
- Department of Genetic Engineering & Biosafety, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Katayoun Zamani
- Department of Genetic Engineering & Biosafety, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Mahmoud Solouki
- Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Zabol, Iran
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Robinson GHJ, Domoney C. Perspectives on the genetic improvement of health- and nutrition-related traits in pea. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 158:353-362. [PMID: 33250319 PMCID: PMC7801860 DOI: 10.1016/j.plaphy.2020.11.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/15/2020] [Indexed: 05/27/2023]
Abstract
Pea (Pisum sativum L.) is a widely grown pulse crop that is a source of protein, starch and micronutrients in both human diets and livestock feeds. There is currently a strong global focus on making agriculture and food production systems more sustainable, and pea has one of the smallest carbon footprints of all crops. Multiple genetic loci have been identified that influence pea seed protein content, but protein composition is also important nutritionally. Studies have previously identified gene families encoding individual seed protein classes, now documented in a reference pea genome assembly. Much is also known about loci affecting starch metabolism in pea, with research especially focusing on improving concentrations of resistant starch, which has a positive effect on maintaining blood glucose homeostasis. Diversity in natural germplasm for micronutrient concentrations and mineral hyperaccumulation mutants have been discovered, with quantitative trait loci on multiple linkage groups identified for seed micronutrient concentrations. Antinutrients, which affect nutrient bioavailability, must also be considered; mutants in which the concentrations of important antinutrients including phytate and trypsin inhibitors are reduced have already been discovered. Current knowledge on the genetics of nutritional traits in pea will greatly assist with crop improvement for specific end uses, and further identification of genes involved will help advance our knowledge of the control of the synthesis of seed compounds.
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Affiliation(s)
- Gabriel H J Robinson
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, United Kingdom
| | - Claire Domoney
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, United Kingdom.
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Kreplak J, Madoui MA, Cápal P, Novák P, Labadie K, Aubert G, Bayer PE, Gali KK, Syme RA, Main D, Klein A, Bérard A, Vrbová I, Fournier C, d'Agata L, Belser C, Berrabah W, Toegelová H, Milec Z, Vrána J, Lee H, Kougbeadjo A, Térézol M, Huneau C, Turo CJ, Mohellibi N, Neumann P, Falque M, Gallardo K, McGee R, Tar'an B, Bendahmane A, Aury JM, Batley J, Le Paslier MC, Ellis N, Warkentin TD, Coyne CJ, Salse J, Edwards D, Lichtenzveig J, Macas J, Doležel J, Wincker P, Burstin J. A reference genome for pea provides insight into legume genome evolution. Nat Genet 2019; 51:1411-1422. [PMID: 31477930 DOI: 10.1038/s41588-019-0480-1] [Citation(s) in RCA: 238] [Impact Index Per Article: 47.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 07/10/2019] [Indexed: 02/03/2023]
Abstract
We report the first annotated chromosome-level reference genome assembly for pea, Gregor Mendel's original genetic model. Phylogenetics and paleogenomics show genomic rearrangements across legumes and suggest a major role for repetitive elements in pea genome evolution. Compared to other sequenced Leguminosae genomes, the pea genome shows intense gene dynamics, most likely associated with genome size expansion when the Fabeae diverged from its sister tribes. During Pisum evolution, translocation and transposition differentially occurred across lineages. This reference sequence will accelerate our understanding of the molecular basis of agronomically important traits and support crop improvement.
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Affiliation(s)
- Jonathan Kreplak
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Mohammed-Amin Madoui
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Université Evry, Université Paris-Saclay, Evry, France
| | - Petr Cápal
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - Petr Novák
- Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Karine Labadie
- Genoscope, Institut François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Grégoire Aubert
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Philipp E Bayer
- School of Biological Sciences and Institute of Agriculture, University of Western Australia, Perth, Western Australia, Australia
| | - Krishna K Gali
- Crop Development Centre/Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Robert A Syme
- Centre for Crop and Disease Management, Curtin University, Bentley, Western Australia, Australia
| | - Dorrie Main
- Department of Horticulture, Washington State University, Pullman, WA, USA
| | - Anthony Klein
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Aurélie Bérard
- Etude du Polymorphisme des Génomes Végétaux, INRA, Université Paris-Saclay, Evry, France
| | - Iva Vrbová
- Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Cyril Fournier
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Leo d'Agata
- Genoscope, Institut François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Caroline Belser
- Genoscope, Institut François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Wahiba Berrabah
- Genoscope, Institut François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Helena Toegelová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - Zbyněk Milec
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - Jan Vrána
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - HueyTyng Lee
- School of Biological Sciences and Institute of Agriculture, University of Western Australia, Perth, Western Australia, Australia
- Department of Plant Breeding, IFZ Research Centre for Biosystems, Land Use and Nutrition, Justus Liebig University, Giessen, Germany
| | - Ayité Kougbeadjo
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Morgane Térézol
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Cécile Huneau
- UMR 1095 Génétique, Diversité, Ecophysiologie des Céréales, INRA, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Chala J Turo
- Centre for Crop and Disease Management, School of Molecular and Life Science, Curtin University, Bentley, Western Australia, Australia
| | | | - Pavel Neumann
- Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Matthieu Falque
- GQE-Le Moulon, INRA, University of Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Karine Gallardo
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Rebecca McGee
- USDA Agricultural Research Service, Pullman, WA, USA
| | - Bunyamin Tar'an
- Crop Development Centre/Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Abdelhafid Bendahmane
- Institute of Plant Sciences Paris-Saclay, INRA, CNRS, University of Paris-Sud, University of Evry, University Paris-Diderot, Sorbonne Paris-Cite, University of Paris-Saclay, Orsay, France
| | - Jean-Marc Aury
- Genoscope, Institut François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Jacqueline Batley
- School of Biological Sciences and Institute of Agriculture, University of Western Australia, Perth, Western Australia, Australia
| | | | - Noel Ellis
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Thomas D Warkentin
- Crop Development Centre/Department of Plant Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | | | - Jérome Salse
- UMR 1095 Génétique, Diversité, Ecophysiologie des Céréales, INRA, Université Clermont Auvergne, Clermont-Ferrand, France
| | - David Edwards
- School of Biological Sciences and Institute of Agriculture, University of Western Australia, Perth, Western Australia, Australia
| | - Judith Lichtenzveig
- School of Agriculture and Environment, University of Western Australia, Perth, Western Australia, Australia
| | - Jiří Macas
- Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - Patrick Wincker
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Université Evry, Université Paris-Saclay, Evry, France
| | - Judith Burstin
- Agroécologie, AgroSup Dijon, INRA, Université Bourgogne Franche-Comté Bourgogne, Université Bourgogne Franche-Comté, Dijon, France.
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Biofortification of safflower: an oil seed crop engineered for ALA-targeting better sustainability and plant based omega-3 fatty acids. Transgenic Res 2018; 27:253-263. [PMID: 29752697 DOI: 10.1007/s11248-018-0070-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 04/05/2018] [Indexed: 10/16/2022]
Abstract
Alpha-linolenic acid (ALA) deficiency and a skewed n6:n3 fatty acid ratio in the diet is a major explanation for the prevalence of cardiovascular diseases and inflammatory/autoimmune diseases. There is mounting evidence of the health benefits associated with omega-3 long chain polyunsaturated fatty acids (LC PUFA's). Although present in abundance in fish, a number of factors limit our consumption of fish based omega-3 PUFA's. To name a few, overexploitation of wild fish stocks has reduced their sustainability due to increased demand of aquaculture for fish oil and meal; the pollution of marine food webs has raised concerns over the ingestion of toxic substances such as heavy metals and dioxins; vegetarians do not consider fish-based sources for supplemental nutrition. Thus alternative sources are being sought and one approach to the sustainable supply of LC-PUFAs is the metabolic engineering of transgenic plants with the capacity to synthesize n3 LC-PUFAs. The present investigation was carried out with the goal of developing transgenic safflower capable of producing pharmaceutically important alpha-linolenic acid (ALA, C18:3, n3). This crop was selected as the seeds accumulate ~ 78% of the total fatty acids as linoleic acid (LA, C18:2, n6), the immediate precursor of ALA. In the present work, ALA production was achieved successfully in safflower seeds by transforming safflower hypocotyls with Arabidopsis specific delta 15 desaturase (FAD3) driven by truncated seed specific promoter. Transgenic safflower fortified with ALA is not only potentially valuable nutritional superior novel oil but also has reduced ratio of LA to ALA which is required for good health.
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Du J, Wang S, He C, Zhou B, Ruan YL, Shou H. Identification of regulatory networks and hub genes controlling soybean seed set and size using RNA sequencing analysis. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:1955-1972. [PMID: 28087653 PMCID: PMC5429000 DOI: 10.1093/jxb/erw460] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/11/2016] [Indexed: 05/19/2023]
Abstract
To understand the gene expression networks controlling soybean seed set and size, transcriptome analyses were performed in three early seed developmental stages, using two genotypes with contrasting seed size. The two-dimensional data set provides a comprehensive and systems-level view on dynamic gene expression networks underpinning soybean seed set and subsequent development. Using pairwise comparisons and weighted gene coexpression network analyses, we identified modules of coexpressed genes and hub genes for each module. Of particular importance are the discoveries of specific modules for the large seed size variety and for seed developmental stages. A large number of candidate regulators for seed size, including those involved in hormonal signaling pathways and transcription factors, were transiently and specifically induced in the early developmental stages. The soybean homologs of a brassinosteroid signaling receptor kinase, a brassinosteroid-signaling kinase, were identified as hub genes operating in the seed coat network in the early seed maturation stage. Overexpression of a candidate seed size regulatory gene, GmCYP78A5, in transgenic soybean resulted in increased seed size and seed weight. Together, these analyses identified a large number of potential key regulators controlling soybean seed set, seed size, and, consequently, yield potential, thereby providing new insights into the molecular networks underlying soybean seed development.
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Affiliation(s)
- Juan Du
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, China
| | - Shoudong Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, China
| | - Cunman He
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, China
| | - Bin Zhou
- Institute of Crop Science, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Yong-Ling Ruan
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW, Australia
| | - Huixia Shou
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, China
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7
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Pierce EC, LaFayette PR, Ortega MA, Joyce BL, Kopsell DA, Parrott WA. Ketocarotenoid Production in Soybean Seeds through Metabolic Engineering. PLoS One 2015; 10:e0138196. [PMID: 26376481 PMCID: PMC4574205 DOI: 10.1371/journal.pone.0138196] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 08/26/2015] [Indexed: 11/19/2022] Open
Abstract
The pink or red ketocarotenoids, canthaxanthin and astaxanthin, are used as feed additives in the poultry and aquaculture industries as a source of egg yolk and flesh pigmentation, as farmed animals do not have access to the carotenoid sources of their wild counterparts. Because soybean is already an important component in animal feed, production of these carotenoids in soybean could be a cost-effective means of delivery. In order to characterize the ability of soybean seed to produce carotenoids, soybean cv. Jack was transformed with the crtB gene from Pantoea ananatis, which codes for phytoene synthase, an enzyme which catalyzes the first committed step in the carotenoid pathway. The crtB gene was engineered together in combinations with ketolase genes (crtW from Brevundimonas sp. strain SD212 and bkt1 from Haematococcus pluvialis) to produce ketocarotenoids; all genes were placed under the control of seed-specific promoters. HPLC results showed that canthaxanthin is present in the transgenic seeds at levels up to 52 μg/g dry weight. Transgenic seeds also accumulated other compounds in the carotenoid pathway, such as astaxanthin, lutein, β-carotene, phytoene, α-carotene, lycopene, and β-cryptoxanthin, whereas lutein was the only one of these detected in non-transgenic seeds. The accumulation of astaxanthin, which requires a β-carotene hydroxylase in addition to a β-carotene ketolase, in the transgenic seeds suggests that an endogenous soybean enzyme is able to work in combination with the ketolase transgene. Soybean seeds that accumulate ketocarotenoids could potentially be used in animal feed to reduce or eliminate the need for the costly addition of these compounds.
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Affiliation(s)
- Emily C. Pierce
- Center for Applied Genetic Technologies and the Institute of Plant Breeding, Genetics, and Genomics, The University of Georgia, Athens, Georgia, United States of America
| | - Peter R. LaFayette
- Center for Applied Genetic Technologies and the Institute of Plant Breeding, Genetics, and Genomics, The University of Georgia, Athens, Georgia, United States of America
| | - María A. Ortega
- Center for Applied Genetic Technologies and the Institute of Plant Breeding, Genetics, and Genomics, The University of Georgia, Athens, Georgia, United States of America
| | - Blake L. Joyce
- The School of Plant Sciences, BIO5 Institute, University of Arizona, Tucson, Arizona, United States of America
| | - Dean A. Kopsell
- Plant Sciences Department, The University of Tennessee, Knoxville, Tennessee, United States of America
| | - Wayne A. Parrott
- Center for Applied Genetic Technologies and the Institute of Plant Breeding, Genetics, and Genomics, The University of Georgia, Athens, Georgia, United States of America
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Yoshino M, Tsutsumi K, Kanazawa A. Profiles of embryonic nuclear protein binding to the proximal promoter region of the soybean β-conglycinin α subunit gene. PLANT BIOLOGY (STUTTGART, GERMANY) 2015; 17:147-52. [PMID: 24943483 DOI: 10.1111/plb.12218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 05/02/2014] [Indexed: 06/03/2023]
Abstract
β-Conglycinin, a major component of seed storage protein in soybean, comprises three subunits: α, α' and β. The expression of genes for these subunits is strictly controlled during embryogenesis. The proximal promoter region up to 245 bp upstream of the transcription start site of the α subunit gene sufficiently confers spatial and temporal control of transcription in embryos. Here, the binding profile of nuclear proteins in the proximal promoter region of the α subunit gene was analysed. DNase I footprinting analysis indicated binding of proteins to the RY element and DNA regions including box I, a region conserved in cognate gene promoters. An electrophoretic mobility shift assay (EMSA) using different portions of box I as a probe revealed that multiple portions of box I bind to nuclear proteins. In addition, an EMSA using nuclear proteins extracted from embryos at different developmental stages indicated that the levels of major DNA-protein complexes on box I increased during embryo maturation. These results are consistent with the notion that box I is important for the transcriptional control of seed storage protein genes. Furthermore, the present data suggest that nuclear proteins bind to novel motifs in box I including 5'-TCAATT-3' rather than to predicted cis-regulatory elements.
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Affiliation(s)
- M Yoshino
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
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Kim MJ, Kim JK, Kim HJ, Pak JH, Lee JH, Kim DH, Choi HK, Jung HW, Lee JD, Chung YS, Ha SH. Genetic modification of the soybean to enhance the β-carotene content through seed-specific expression. PLoS One 2012; 7:e48287. [PMID: 23118971 PMCID: PMC3485231 DOI: 10.1371/journal.pone.0048287] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 09/24/2012] [Indexed: 12/26/2022] Open
Abstract
The carotenoid biosynthetic pathway was genetically manipulated using the recombinant PAC (Phytoene synthase-2A-Carotene desaturase) gene in Korean soybean (Glycine max L. cv. Kwangan). The PAC gene was linked to either the β-conglycinin (β) or CaMV-35S (35S) promoter to generate β-PAC and 35S-PAC constructs, respectively. A total of 37 transgenic lines (19 for β-PAC and 18 for 35S-PAC) were obtained through Agrobacterium-mediated transformation using the modified half-seed method. The multi-copy insertion of the transgene was determined by genomic Southern blot analysis. Four lines for β-PAC were selected by visual inspection to confirm an orange endosperm, which was not found in the seeds of the 35S-PAC lines. The strong expression of PAC gene was detected in the seeds of the β-PAC lines and in the leaves of the 35S-PAC lines by RT-PCR and qRT-PCR analyses, suggesting that these two different promoters function distinctively. HPLC analysis of the seeds and leaves of the T(2) generation plants revealed that the best line among the β-PAC transgenic seeds accumulated 146 µg/g of total carotenoids (approximately 62-fold higher than non-transgenic seeds), of which 112 µg/g (77%) was β-carotene. In contrast, the level and composition of the leaf carotenoids showed little difference between transgenic and non-transgenic soybean plants. We have therefore demonstrated the production of a high β-carotene soybean through the seed-specific overexpression of two carotenoid biosynthetic genes, Capsicum phytoene synthase and Pantoea carotene desaturase. This nutritional enhancement of soybean seeds through the elevation of the provitamin A content to produce biofortified food may have practical health benefits in the future in both humans and livestock.
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Affiliation(s)
- Mi-Jin Kim
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Jae Kwang Kim
- National Academy of Agricultural Science, Rural Development Administration, Suwon, Republic of Korea
| | - Hye Jeong Kim
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Jung Hun Pak
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Jai-Heon Lee
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Doh-Hoon Kim
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Hong Kyu Choi
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Ho Won Jung
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Jeong-Dong Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Young-Soo Chung
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Sun-Hwa Ha
- National Academy of Agricultural Science, Rural Development Administration, Suwon, Republic of Korea
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ZHANG QL, ZHAO Y, LI XW, ZHAI Y, ZHANG Y, WANG Y, LI JW, WANG QY. Cloning and Activity Analysis of Soybean SACPD-C Promoter. ZUOWU XUEBAO 2011. [DOI: 10.3724/sp.j.1006.2011.01205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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HIDAYAT MEILINAH, SUJATNO MUCHTAN, SUTADIPURA NUGRAHA, SETIAWAN, FARIED AHMAD. β-Conglycinin Content Obtained from Two Soybean Varieties Using Different Preparation and Extraction Methods. HAYATI JOURNAL OF BIOSCIENCES 2011. [DOI: 10.4308/hjb.18.1.37] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Fauteux F, Strömvik MV. Seed storage protein gene promoters contain conserved DNA motifs in Brassicaceae, Fabaceae and Poaceae. BMC PLANT BIOLOGY 2009; 9:126. [PMID: 19843335 PMCID: PMC2770497 DOI: 10.1186/1471-2229-9-126] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Accepted: 10/20/2009] [Indexed: 05/22/2023]
Abstract
BACKGROUND Accurate computational identification of cis-regulatory motifs is difficult, particularly in eukaryotic promoters, which typically contain multiple short and degenerate DNA sequences bound by several interacting factors. Enrichment in combinations of rare motifs in the promoter sequence of functionally or evolutionarily related genes among several species is an indicator of conserved transcriptional regulatory mechanisms. This provides a basis for the computational identification of cis-regulatory motifs. RESULTS We have used a discriminative seeding DNA motif discovery algorithm for an in-depth analysis of 54 seed storage protein (SSP) gene promoters from three plant families, namely Brassicaceae (mustards), Fabaceae (legumes) and Poaceae (grasses) using backgrounds based on complete sets of promoters from a representative species in each family, namely Arabidopsis (Arabidopsis thaliana (L.) Heynh.), soybean (Glycine max (L.) Merr.) and rice (Oryza sativa L.) respectively. We have identified three conserved motifs (two RY-like and one ACGT-like) in Brassicaceae and Fabaceae SSP gene promoters that are similar to experimentally characterized seed-specific cis-regulatory elements. Fabaceae SSP gene promoter sequences are also enriched in a novel, seed-specific E2Fb-like motif. Conserved motifs identified in Poaceae SSP gene promoters include a GCN4-like motif, two prolamin-box-like motifs and an Skn-1-like motif. Evidence of the presence of a variant of the TATA-box is found in the SSP gene promoters from the three plant families. Motifs discovered in SSP gene promoters were used to score whole-genome sets of promoters from Arabidopsis, soybean and rice. The highest-scoring promoters are associated with genes coding for different subunits or precursors of seed storage proteins. CONCLUSION Seed storage protein gene promoter motifs are conserved in diverse species, and different plant families are characterized by a distinct combination of conserved motifs. The majority of discovered motifs match experimentally characterized cis-regulatory elements. These results provide a good starting point for further experimental analysis of plant seed-specific promoters and our methodology can be used to unravel more transcriptional regulatory mechanisms in plants and other eukaryotes.
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Affiliation(s)
- François Fauteux
- Department of Plant Science, McGill University, Ste-Anne-de-Bellevue, Canada
- McGill Centre for Bioinformatics, McGill University, Montréal, Canada
| | - Martina V Strömvik
- Department of Plant Science, McGill University, Ste-Anne-de-Bellevue, Canada
- McGill Centre for Bioinformatics, McGill University, Montréal, Canada
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Imoto Y, Yamada T, Kitamura K, Kanazawa A. Spatial and temporal control of transcription of the soybean beta-conglycinin alpha subunit gene is conferred by its proximal promoter region and accounts for the unequal distribution of the protein during embryogenesis. Genes Genet Syst 2008; 83:469-76. [PMID: 19282624 DOI: 10.1266/ggs.83.469] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Differentiation into specific embryo cell types correlates with the processes that lead to the accumulation of seed storage proteins in plants. The alpha subunit of beta-conglycinin, a major component of seed storage proteins in soybean, accumulates at a higher level in cotyledons than in the embryonic axis in developing embryos. To understand the mechanisms underlying this phenomenon, we characterized the upstream region of the alpha subunit gene in terms of transcriptional control using transgenic Arabidopsis thaliana plants carrying reporter gene constructs comprising the 1357-bp upstream sequence of the alpha subunit gene and the beta-glucuronidase (GUS) gene. Analysis of the time-course-dependent pattern of GUS expression revealed that the expression was first confined to the cotyledons and occurred later in the entire embryo during embryogenesis. The level of GUS expression was higher in cotyledons than in the embryonic axis throughout the period of its expression, coincident with the distribution of the alpha subunit protein in soybean embryos. By testing progressively shorter promoter fragments, the cis-acting elements responsible for transcriptional activation in the cotyledons and the embryonic axis were both localized to the region spanning -245 to -161 relative to the transcription start site. It is also concluded that the upstream region up to -245 is sufficient to control the spatial and temporal pattern of transcription, while further upstream regions influence transcription rate without affecting the transcriptional pattern. Overall, these results indicate that the unequal distribution of alpha subunit protein within the embryos is established primarily as a consequence of differential transcriptional activation controlled by a short proximal promoter region of the gene in different embryonic tissues.
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Affiliation(s)
- Yusuke Imoto
- Research Faculty of Agriculture, Hokkaido University
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Wadahama H, Kamauchi S, Nakamoto Y, Nishizawa K, Ishimoto M, Kawada T, Urade R. A novel plant protein disulfide isomerase family homologous to animal P5 - molecular cloning and characterization as a functional protein for folding of soybean seed-storage proteins. FEBS J 2008; 275:399-410. [PMID: 18167147 DOI: 10.1111/j.1742-4658.2007.06199.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The protein disulfide isomerase is known to play important roles in the folding of nascent polypeptides and in the formation of disulfide bonds in the endoplasmic reticulum (ER). In this study, we cloned a gene of a novel protein disulfide isomerase family from soybean leaf (Glycine max L. Merrill. cv Jack) mRNA. The cDNA encodes a protein called GmPDIM. It is composed of 438 amino acids, and its sequence and domain structure are similar to that of animal P5. Recombinant GmPDIM expressed in Escherichia coli displayed an oxidative refolding activity on denatured RNase A. The genomic sequence of GmPDIM was also cloned and sequenced. Comparison of the soybean sequence with sequences from Arabidopsis thaliana and Oryza sativa showed significant conservation of the exon/intron structure. Consensus sequences within the promoters of the GmPDIM genes contained a cis-acting regulatory element for the unfolded protein response, and other regulatory motifs required for seed-specific expression. We observed that expression of GmPDIM was upregulated under ER-stress conditions, and was expressed ubiquitously in soybean tissues such as the cotyledon. It localized to the lumen of the ER. Data from co-immunoprecipitation experiments suggested that GmPDIM associated non-covalently with proglycinin, a precursor of the seed-storage protein glycinin. In addition, GmPDIM associated with the alpha' subunit of beta-conglycinin, a seed-storage protein in the presence of tunicamycin. These results suggest that GmPDIM may play a role in the folding of storage proteins and functions not only as a thiol-oxidoredactase, but also as molecular chaperone.
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MESH Headings
- Animals
- Antigens, Plant
- Blotting, Western
- Cloning, Molecular
- Cotyledon/enzymology
- Cotyledon/genetics
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- DNA, Plant/chemistry
- DNA, Plant/genetics
- Endoplasmic Reticulum/metabolism
- Gene Expression Regulation, Enzymologic
- Gene Expression Regulation, Plant
- Globulins/metabolism
- Immunoprecipitation
- Molecular Sequence Data
- Plant Leaves/enzymology
- Plant Leaves/genetics
- Protein Binding
- Protein Disulfide-Isomerases/chemistry
- Protein Disulfide-Isomerases/genetics
- Protein Disulfide-Isomerases/metabolism
- Protein Folding
- Recombinant Proteins/chemistry
- Recombinant Proteins/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Seed Storage Proteins
- Seeds/enzymology
- Seeds/genetics
- Sequence Analysis, DNA
- Soybean Proteins/chemistry
- Soybean Proteins/genetics
- Soybean Proteins/metabolism
- Glycine max/enzymology
- Glycine max/genetics
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