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Yao Y, You Q, Duan G, Ren J, Chu S, Zhao J, Li X, Zhou X, Jiao Y. Quantitative trait loci analysis of seed oil content and composition of wild and cultivated soybean. BMC PLANT BIOLOGY 2020; 20:51. [PMID: 32005156 PMCID: PMC6995124 DOI: 10.1186/s12870-019-2199-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 12/12/2019] [Indexed: 05/26/2023]
Abstract
BACKGROUND Soybean oil is a major source of edible oil, and the domestication of wild soybean has resulted in significant changes in oil content and composition. Extensive efforts have been made to identify genetic loci that are related to soybean oil traits. The objective of this study was to identify quantitative trait loci (QTLs) related to soybean seed oil and compare the fatty acid composition between wild and cultivated soybean. RESULTS Using the specific-locus amplified fragment sequencing (SLAF-seq) method, a total of 181 recombinant inbred lines (RILs) derived from a cross between wild soybean ZYD00463 (Glycine soja) and cultivated soybean WDD01514 (Glycine max) were genotyped. Finally, a high-density genetic linkage map comprising 11,398 single-nucleotide polymorphism (SNP) markers on 20 linkage groups (LGs) was constructed. Twenty-four stable QTLs for seed oil content and composition were identified by model-based composite interval mapping (CIM) across multiple environments. Among these QTLs, 23 overlapped with or were adjacent to previously reported QTLs. One QTL, qPA10_1 (5.94-9.98 Mb) on Chr. Ten is a novel locus for palmitic acid. In the intervals of stable QTLs, some interesting genes involved in lipid metabolism were detected. CONCLUSIONS We developed 181 RILs from a cross between wild soybean ZYD00463 and cultivated soybean WDD01514 and constructed a high-density genetic map using the SLAF-seq method. We identified 24 stable QTLs for seed oil content and compositions, which includes qPA10_1 on Chr. 10, a novel locus for palmitic acid. Some interesting genes in the QTL regions were also detected. Our study will provide useful information for scientists to learn about genetic variations in lipid metabolism between wild and cultivated soybean.
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Affiliation(s)
- Yanjie Yao
- Key laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Qingbo You
- Key laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Guozhan Duan
- Soybean Research Laboratory, Xuchang Research Institute of Agricultural Sciences, Xuchang, 461000, China
| | - Jianjun Ren
- Soybean Research Laboratory, Xuchang Research Institute of Agricultural Sciences, Xuchang, 461000, China
| | - Shanshan Chu
- Collaborative Innovation Center of Henan Grain Crops /College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Junqing Zhao
- Soybean Research Laboratory, Xuchang Research Institute of Agricultural Sciences, Xuchang, 461000, China
| | - Xia Li
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Xinan Zhou
- Key laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Yongqing Jiao
- Key laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
- Collaborative Innovation Center of Henan Grain Crops /College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
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Chen B, Zhang G, Li P, Yang J, Guo L, Benning C, Wang X, Zhao J. Multiple GmWRI1s are redundantly involved in seed filling and nodulation by regulating plastidic glycolysis, lipid biosynthesis and hormone signalling in soybean (Glycine max). PLANT BIOTECHNOLOGY JOURNAL 2020; 18:155-171. [PMID: 31161718 PMCID: PMC6920143 DOI: 10.1111/pbi.13183] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 05/04/2019] [Accepted: 05/21/2019] [Indexed: 05/09/2023]
Abstract
It has been reported that lipid biosynthesis in plant host root cells plays critical roles in legume-fungal or -rhizobial symbioses, but little is known about its regulatory mechanism in legume-rhizobia interaction. Soybean WRINKLED1 (WRI1) a and b, with their alternative splicing (AS) products a' and b', are highly expressed in developing seeds and nodules, but their functions in soybean nodulation are not known. GmWRI1a and b differently promoted triacylglycerol (TAG) accumulation in both Arabidopsis wild-type and wri1 mutant seeds and when they ectopically expressed in the soybean hairy roots. Transcriptome analysis revealed that 15 genes containing AW boxes in their promoters were targeted by GmWRI1s, including genes involved in glycolysis, fatty acid (FA) and TAG biosynthesis. GmWRI1a, GmWRI1b and b' differentially transactivated most targeted genes. Overexpression of GmWRI1s affected phospholipid and galactolipid synthesis, soluble sugar and starch contents and led to increased nodule numbers, whereas GmWRI1 knockdown hairy roots interfered root glycolysis and lipid biosynthesis and resulted in fewer nodules. These phenomena in GmWRI1 mutants coincided with the altered expression of nodulation genes. Thus, GmWRI1-regulated starch degradation, glycolysis and lipid biosynthesis were critical for nodulation. GmWRI1 mutants also altered auxin and other hormone-related biosynthesis and hormone-related genes, by which GmWRI1s may affect nodule development. The study expands the views for pleiotropic effects of WRI1s in regulating soybean seed filling and root nodulation.
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Affiliation(s)
- Beibei Chen
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanChina
| | - Gaoyang Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | - Penghui Li
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | - Jihong Yang
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and TechnologyAnhui Agricultural UniversityHefeiChina
| | - Liang Guo
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanChina
| | - Christoph Benning
- MSU‐DOE Plant Research LaboratoryMichigan State UniversityEast LansingMIUSA
| | - Xuemin Wang
- Department of BiologyUniversity of MissouriSt. LouisMOUSA
- Donald Danforth Plant Science CenterSt. LouisMOUSA
| | - Jian Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and TechnologyAnhui Agricultural UniversityHefeiChina
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53
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Miller C, Wells R, McKenzie N, Trick M, Ball J, Fatihi A, Dubreucq B, Chardot T, Lepiniec L, Bevan MW. Variation in Expression of the HECT E3 Ligase UPL3 Modulates LEC2 Levels, Seed Size, and Crop Yields in Brassica napus. THE PLANT CELL 2019; 31:2370-2385. [PMID: 31439805 DOI: 10.1101/334581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 07/22/2019] [Accepted: 08/12/2019] [Indexed: 05/28/2023]
Abstract
Identifying genetic variation that increases crop yields is a primary objective in plant breeding. We used association analyses of oilseed rape/canola (Brassica napus) accessions to identify genetic variation that influences seed size, lipid content, and final crop yield. Variation in the promoter region of the HECT E3 ligase gene BnaUPL3 C03 made a major contribution to variation in seed weight per pod, with accessions exhibiting high seed weight per pod having lower levels of BnaUPL3 C03 expression. We defined a mechanism in which UPL3 mediated the proteasomal degradation of LEC2, a master transcriptional regulator of seed maturation. Accessions with reduced UPL3 expression had increased LEC2 protein levels, larger seeds, and prolonged expression of lipid biosynthetic genes during seed maturation. Natural variation in BnaUPL3 C03 expression appears not to have been exploited in current B napus breeding lines and could therefore be used as a new approach to maximize future yields in this important oil crop.
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Affiliation(s)
- Charlotte Miller
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Rachel Wells
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Neil McKenzie
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Martin Trick
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Joshua Ball
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Abdelhak Fatihi
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Bertrand Dubreucq
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Thierry Chardot
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Loic Lepiniec
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Michael W Bevan
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
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Miller C, Wells R, McKenzie N, Trick M, Ball J, Fatihi A, Dubreucq B, Chardot T, Lepiniec L, Bevan MW. Variation in Expression of the HECT E3 Ligase UPL3 Modulates LEC2 Levels, Seed Size, and Crop Yields in Brassica napus. THE PLANT CELL 2019; 31:2370-2385. [PMID: 31439805 PMCID: PMC6790077 DOI: 10.1105/tpc.18.00577] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 07/22/2019] [Accepted: 08/12/2019] [Indexed: 05/23/2023]
Abstract
Identifying genetic variation that increases crop yields is a primary objective in plant breeding. We used association analyses of oilseed rape/canola (Brassica napus) accessions to identify genetic variation that influences seed size, lipid content, and final crop yield. Variation in the promoter region of the HECT E3 ligase gene BnaUPL3 C03 made a major contribution to variation in seed weight per pod, with accessions exhibiting high seed weight per pod having lower levels of BnaUPL3 C03 expression. We defined a mechanism in which UPL3 mediated the proteasomal degradation of LEC2, a master transcriptional regulator of seed maturation. Accessions with reduced UPL3 expression had increased LEC2 protein levels, larger seeds, and prolonged expression of lipid biosynthetic genes during seed maturation. Natural variation in BnaUPL3 C03 expression appears not to have been exploited in current B napus breeding lines and could therefore be used as a new approach to maximize future yields in this important oil crop.
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Affiliation(s)
- Charlotte Miller
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Rachel Wells
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Neil McKenzie
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Martin Trick
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Joshua Ball
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
| | - Abdelhak Fatihi
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Bertrand Dubreucq
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Thierry Chardot
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Loic Lepiniec
- Institut Jean-Pierre Bourgin, Institut National de la Recherche Agronomique, AgroParisTech, Centre National de la Recherche Scientifique, Université Paris-Saclay, Institut National de la Recherche Agronomique Versailles, route de Saint-Cyr, 78000 Versailles, France
| | - Michael W Bevan
- Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom
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55
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Hong MJ, Jang YE, Kim DG, Kim JM, Lee MK, Kim JB, Eom SH, Ha BK, Lyu JI, Kwon SJ. Selection of mutants with high linolenic acid contents and characterization of fatty acid desaturase 2 and 3 genes during seed development in soybean (Glycine max). JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:5384-5391. [PMID: 31077382 DOI: 10.1002/jsfa.9798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/14/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Soybean seeds contain 18-24% lipids, which are made up of 85% polyunsaturated fatty acids. Two of these (linoleic and linolenic acids) comprise essential fatty acids that are not synthesized in humans and animals. Linolenic acid plays a vital role in the maintenance of brain function and is a source of docosahexaenoic acid for retinal and nerve tissue, with its physiological functions being a focus of attention. RESULTS We developed mutant soybean populations via gamma irradiation of Korean cultivars Danbaek and Daepung and evaluated the linolenic acid content of 78 and 154 M9 mutant progenies. We selected the four mutant lines with the highest linolenic acid contents based on 2 years of investigation of fatty acids. The selected mutant lines had linolenic acid contents that were 33.9% to 67.7% higher than those of the original cultivars and exhibited increased fatty acid desaturase (FAD) gene expression levels during seed development. We also identified nucleotide polymorphisms of FAD genes in the four mutant lines. CONCLUSION The present study found that linolenic acid content is related to significantly increased expression levels of the FAD3C and FAD3D genes in the endoplasmic reticulum, which was uncovered by radiation mutation breeding of soybean. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Min Jeong Hong
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - Young Eun Jang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - Dong-Gun Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
- Department of Life-Resources, Graduate School, Sunchon National University, Sunchon, Korea
| | - Jung Min Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
- Division of Plant Biotechnology, Collage of Agriculture and Life Science, Chonnam National University, Gwangju, Korea
| | - Min-Kyu Lee
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
- Division of Plant Biotechnology, Collage of Agriculture and Life Science, Chonnam National University, Gwangju, Korea
| | - Jin-Baek Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - Seok Hyun Eom
- Department of Horticultural Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, Korea
| | - Bo-Keun Ha
- Division of Plant Biotechnology, Collage of Agriculture and Life Science, Chonnam National University, Gwangju, Korea
| | - Jae Il Lyu
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - Soon-Jae Kwon
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
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WRINKLED1, a "Master Regulator" in Transcriptional Control of Plant Oil Biosynthesis. PLANTS 2019; 8:plants8070238. [PMID: 31336651 PMCID: PMC6681333 DOI: 10.3390/plants8070238] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 12/31/2022]
Abstract
A majority of plant species generate and accumulate triacylglycerol (TAG) in their seeds, which is the main resource of carbon and energy supporting the process of seedling development. Plant seed oils have broad ranges of uses, being not only important for human diets but also renewable feedstock of industrial applications. The WRINKLED1 (WRI1) transcription factor is vital for the transcriptional control of plant oil biosynthetic pathways. Since the identification of the Arabidopsis WRI1 gene (AtWRI1) fifteen years ago, tremendous progress has been made in understanding the functions of WRI1 at multiple levels, ranging from the identification of AtWRI1 target genes to location of the AtWRI1 binding motif, and from discovery of intrinsic structural disorder in WRI1 to fine-tuning of WRI1 modulation by post-translational modifications and protein-protein interactions. The expanding knowledge on the functional understanding of the WRI1 regulatory mechanism not only provides a clearer picture of transcriptional regulation of plant oil biosynthetic pathway, but also helps generate new strategies to better utilize WRI1 for developing novel oil crops.
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Ding J, Ruan C, Du W, Guan Y. RNA-seq data reveals a coordinated regulation mechanism of multigenes involved in the high accumulation of palmitoleic acid and oil in sea buckthorn berry pulp. BMC PLANT BIOLOGY 2019; 19:207. [PMID: 31109294 PMCID: PMC6528223 DOI: 10.1186/s12870-019-1815-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Sea buckthorn is a woody oil crop in which palmitoleic acid (C16:1n7, an omega-7 fatty acid (FA)) contributes approximately 40% of the total FA content in berry pulp (non-seed tissue). However, the molecular mechanisms contributing to the high accumulation of C16:1n7 in developing sea buckthorn berry pulp (SBP) remain poorly understood. RESULTS We identified 1737 unigenes associated with lipid metabolism through RNA-sequencing analysis of the four developmental stages of berry pulp in two sea buckthorn lines, 'Za56' and 'TF2-36'; 139 differentially expressed genes were detected between the different berry pulp developmental stages in the two lines. Analyses of the FA composition showed that the C16:1n7 contents were significantly higher in line 'Za56' than in line 'TF2-36' in the mid-late developmental stages of SBP. Additionally, qRT-PCR analyses of 15 genes involved in FA and triacylglycerol (TAG) biosynthesis in both lines revealed that delta9-ACP-desaturase (ACP-Δ9D) competed with 3-ketoacyl-ACP-synthase II (KASII) for the substrate C16:0-ACP and that ACP-Δ9D and delta9-CoA-desaturase (CoA-Δ9D) gene expression positively correlated with C16:1n7 content; KASII and fatty acid elongation 1 (FAE1) gene expression positively correlated with C18:0 content in developing SBP. Specifically, the abundance of ACP-Δ9D and CoA-Δ9D transcripts in line 'Za56', which had a higher C16:1n7 content than line 'TF2-36', suggests that these two genes play an important role in C16:1n7 biosynthesis. Furthermore, the high expressions of the glycerol-3-phosphate dehydrogenase (GPD1) gene and the WRINKLED1 (WRI1) transcription factor contributed to increased biosynthesis of TAG precursor and FAs, respectively, in the early developmental stages of SBP, and the high expression of the diacylglycerol O-acyltransferase 1 (DGAT1) gene increased TAG assembly in the later developmental stages of SBP. Overall, we concluded that increased ACP-Δ9D and CoA-Δ9D levels coupled with decreased KASII and FAE1 activity is a critical event for high C16:1n7 accumulation and that the coordinated high expression of WRI1, GPD1, and DGAT1 genes resulted in high oil accumulation in SBP. CONCLUSION Our results provide a scientific basis for understanding the mechanism of high C16:1n7 accumulation in berry pulp (non-seed tissue) and are valuable to the genetic breeding programme for achieving a high quality and yield of SBP oil.
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Affiliation(s)
- Jian Ding
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Institute of Plant Resources, Dalian Minzu University, 18 Liaohe West Road, Dalian, 116600 Liaoning China
| | - Chengjiang Ruan
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Institute of Plant Resources, Dalian Minzu University, 18 Liaohe West Road, Dalian, 116600 Liaoning China
| | - Wei Du
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Institute of Plant Resources, Dalian Minzu University, 18 Liaohe West Road, Dalian, 116600 Liaoning China
| | - Ying Guan
- Institute of Berries, Heilongjiang Academy of Agricultural Sciences, 5 Fansheng Street, Suiling, Heilongjiang, 152230 China
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Radkova M, Revalska M, Kertikova D, Iantcheva A. Zinc finger CCHC-type protein related with seed size in model legume species Medicago truncatula. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1568914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Mariana Radkova
- Functional Genetic Group, AgroBioInstitute, Agricultural Academy, Sofia, Bulgaria
| | - Miglena Revalska
- Functional Genetic Group, AgroBioInstitute, Agricultural Academy, Sofia, Bulgaria
| | - Daniela Kertikova
- Department of Breeding and Seed Production of Forage Crops, Institute of Forage Crops, Agricultural Academy, Pleven, Bulgaria
| | - Anelia Iantcheva
- Functional Genetic Group, AgroBioInstitute, Agricultural Academy, Sofia, Bulgaria
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Zhang G, Bahn SC, Wang G, Zhang Y, Chen B, Zhang Y, Wang X, Zhao J. PLDα1-knockdown soybean seeds display higher unsaturated glycerolipid contents and seed vigor in high temperature and humidity environments. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:9. [PMID: 30622651 PMCID: PMC6319013 DOI: 10.1186/s13068-018-1340-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 12/13/2018] [Indexed: 05/03/2023]
Abstract
BACKGROUND Soybean oil constitutes an important source of vegetable oil and biofuel. However, high temperature and humidity adversely impacts soybean seed development, yield, and quality during plant development and after harvest. Genetic improvement of soybean tolerance to stress environments is highly desirable. RESULTS Transgenic soybean lines with knockdown of phospholipase Dα1 (PLDα1KD) were generated to study PLDα1's effects on lipid metabolism and seed vigor under high temperature and humidity conditions. Under such stress, as compared with normal growth conditions, PLDα1KD lines showed an attenuated stress-induced deterioration during soybean seed development, which was associated with elevated expression of reactive oxygen species-scavenging genes when compared with wild-type control. The developing seeds of PLDα1KD had higher levels of unsaturation in triacylglycerol (TAG) and major membrane phospholipids, but lower levels of phosphatidic acid and lysophospholipids compared with control cultivar. Lipid metabolite and gene expression profiling indicates that the increased unsaturation on phosphatidylcholine (PC) and enhanced conversion between PC and diacylglycerol (DAG) by PC:DAG acyltransferase underlie a basis for increased TAG unsaturation in PLDα1KD seeds. Meanwhile, the turnover of PC and phosphatidylethanolamine (PE) into lysoPC and lysoPE was suppressed in PLDα1KD seeds under high temperature and humidity conditions. PLDα1KD developing seeds suffered lighter oxidative stresses than did wild-type developing seeds in the stressful environments. PLDα1KD seeds contain higher oil contents and maintained higher germination rates than the wild-type seeds. CONCLUSIONS The study provides insights into the roles of PLDα1 in developing soybean seeds under high temperature and humidity stress. PLDα1KD decreases pre-harvest deterioration and enhances acyl editing in phospholipids and TAGs. The results indicate a way towards improving production of quality soybean seeds as foods and biofuels under increasing environmental stress.
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Affiliation(s)
- Gaoyang Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, 230036 China
| | - Sung-Chul Bahn
- University of Missouri at St Louis, Donald Danforth Plant Science Center, St. Louis, MO 63132 USA
| | - Geliang Wang
- University of Missouri at St Louis, Donald Danforth Plant Science Center, St. Louis, MO 63132 USA
| | - Yanrui Zhang
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, 230036 China
| | - Beibei Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430075 China
| | - Yuliang Zhang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops. Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101 China
| | - Xuemin Wang
- University of Missouri at St Louis, Donald Danforth Plant Science Center, St. Louis, MO 63132 USA
| | - Jian Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, 230036 China
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Lepiniec L, Devic M, Roscoe TJ, Bouyer D, Zhou DX, Boulard C, Baud S, Dubreucq B. Molecular and epigenetic regulations and functions of the LAFL transcriptional regulators that control seed development. PLANT REPRODUCTION 2018; 31:291-307. [PMID: 29797091 DOI: 10.1007/s00497-018-0337-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 05/10/2018] [Indexed: 05/20/2023]
Abstract
The LAFL (i.e. LEC1, ABI3, FUS3, and LEC2) master transcriptional regulators interact to form different complexes that induce embryo development and maturation, and inhibit seed germination and vegetative growth in Arabidopsis. Orthologous genes involved in similar regulatory processes have been described in various angiosperms including important crop species. Consistent with a prominent role of the LAFL regulators in triggering and maintaining embryonic cell fate, their expression appears finely tuned in different tissues during seed development and tightly repressed in vegetative tissues by a surprisingly high number of genetic and epigenetic factors. Partial functional redundancies and intricate feedback regulations of the LAFL have hampered the elucidation of the underpinning molecular mechanisms. Nevertheless, genetic, genomic, cellular, molecular, and biochemical analyses implemented during the last years have greatly improved our knowledge of the LALF network. Here we summarize and discuss recent progress, together with current issues required to gain a comprehensive insight into the network, including the emerging function of LEC1 and possibly LEC2 as pioneer transcription factors.
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Affiliation(s)
- L Lepiniec
- IJPB (Institut Jean-Pierre Bourgin), INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026, Versailles, France.
| | - M Devic
- Régulations Epigénétiques et Développement de la Graine, ERL 5300 CNRS-IRD UMR DIADE, IRD centre de Montpellier, 911 Avenue Agropolis, BP 64501, 34394, Montpellier, France
- Laboratoire d'Océanographie Microbienne, Observatoire Océanologique, Sorbonne Universités, Université Pierre et Marie Curie (Paris 06) & Centre National pour la Recherche Scientifique CNRS UMR 7621, 66650, Banyuls-sur-Mer, France
| | - T J Roscoe
- Régulations Epigénétiques et Développement de la Graine, ERL 5300 CNRS-IRD UMR DIADE, IRD centre de Montpellier, 911 Avenue Agropolis, BP 64501, 34394, Montpellier, France
- Laboratoire d'Océanographie Microbienne, Observatoire Océanologique, Sorbonne Universités, Université Pierre et Marie Curie (Paris 06) & Centre National pour la Recherche Scientifique CNRS UMR 7621, 66650, Banyuls-sur-Mer, France
| | - D Bouyer
- Institut de Biologie de l'ENS, CNRS UMR8197, Ecole Normale Supérieure, 46 rue d'Ulm, 75230, Paris Cedex 05, France
| | - D-X Zhou
- Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris Sud 11, Université Paris-Saclay, 91405, Orsay, France
| | - C Boulard
- IJPB (Institut Jean-Pierre Bourgin), INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026, Versailles, France
| | - S Baud
- IJPB (Institut Jean-Pierre Bourgin), INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026, Versailles, France
| | - B Dubreucq
- IJPB (Institut Jean-Pierre Bourgin), INRA, AgroParisTech, CNRS, Université Paris-Saclay, RD10, 78026, Versailles, France
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Ding J, Ruan C, Guan Y, Krishna P. Identification of microRNAs involved in lipid biosynthesis and seed size in developing sea buckthorn seeds using high-throughput sequencing. Sci Rep 2018; 8:4022. [PMID: 29507325 PMCID: PMC5838164 DOI: 10.1038/s41598-018-22464-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/23/2018] [Indexed: 12/20/2022] Open
Abstract
Sea buckthorn is a plant of medicinal and nutritional importance owing in part to the high levels of essential fatty acids, linoleic (up to 42%) and α-linolenic (up to 39%) acids in the seed oil. Sea buckthorn can produce seeds either via the sexual pathway or by apomixis. The seed development and maturation programs are critically dependent on miRNAs. To understand miRNA-mediated regulation of sea buckthorn seed development, eight small RNA libraries were constructed for deep sequencing from developing seeds of a low oil content line ‘SJ1’ and a high oil content line ‘XE3’. High-throughput sequencing identified 137 known miRNA from 27 families and 264 novel miRNAs. The potential targets of the identified miRNAs were predicted based on sequence homology. Nineteen (four known and 15 novel) and 22 (six known and 16 novel) miRNAs were found to be involved in lipid biosynthesis and seed size, respectively. An integrated analysis of mRNA and miRNA transcriptome and qRT-PCR identified some key miRNAs and their targets (miR164d-ARF2, miR168b-Δ9D, novelmiRNA-108-ACC, novelmiRNA-23-GPD1, novelmiRNA-58-DGAT1, and novelmiRNA-191-DGAT2) potentially involved in seed size and lipid biosynthesis of sea buckthorn seed. These results indicate the potential importance of miRNAs in regulating lipid biosynthesis and seed size in sea buckthorn.
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Affiliation(s)
- Jian Ding
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Institute of Plant Resources, Dalian Minzu University, Dalian, 116600, China
| | - Chengjiang Ruan
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Institute of Plant Resources, Dalian Minzu University, Dalian, 116600, China.
| | - Ying Guan
- Institute of Berries, Heilongjiang Academy of Agricultural Sciences, Suiling, 152200, China
| | - Priti Krishna
- School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia
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Tang G, Xu P, Ma W, Wang F, Liu Z, Wan S, Shan L. Seed-Specific Expression of AtLEC1 Increased Oil Content and Altered Fatty Acid Composition in Seeds of Peanut ( Arachis hypogaea L.). FRONTIERS IN PLANT SCIENCE 2018; 9:260. [PMID: 29559985 PMCID: PMC5845668 DOI: 10.3389/fpls.2018.00260] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/14/2018] [Indexed: 05/20/2023]
Abstract
Peanut (Arachis hypogaea L.) is one of the major oil crops and is the fifth largest source of plant oils in the world. Numerous genes participate in regulating the biosynthesis and accumulation of the storage lipids in seeds or other reservoir organs, among which several transcription factors, such as LEAFY COTYLEDON1 (AtLEC1), LEC2, and WRINKLED1 (WRI1), involved in embryo development also control the lipid reservoir in seeds. In this study, the AtLEC1 gene was transferred into the peanut genome and expressed in a seed-specific manner driven by the NapinA full-length promoter or its truncated 230-bp promoter. Four homozygous transgenic lines, two lines with the longer promoter and the other two with the truncated one, were selected for further analysis. The AtLEC1 mRNA level and the corresponding protein accumulation in different transgenic overexpression lines were altered, and the transgenic plants grew and developed normally without any detrimental effects on major agronomic traits. In the developing seeds of transgenic peanuts, the mRNA levels of a series of genes were upregulated. These genes are associated with fatty acid (FA) biosynthesis and lipid accumulation. The former set of genes included the homomeric ACCase A (AhACC II), the BC subunit of heteromeric ACCase (AhBC4), ketoacyl-ACP synthetase (AhKAS II), and stearoyl-ACP desaturase (AhSAD), while the latter ones were the diacylglycerol acyltransferases and oleosins (AhDGAT1, AhDGAT2, AhOle1, AhOle2, and AhOle3). The oil content and seed weight increased by 4.42-15.89% and 11.1-22.2%, respectively, and the levels of major FA components including stearic acid, oleic acid, and linoleic acid changed significantly in all different lines.
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Affiliation(s)
- Guiying Tang
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Bio-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Pingli Xu
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Bio-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Wenhua Ma
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Bio-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
- College of Life Sciences, Shandong University, Jinan, China
| | - Fang Wang
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Bio-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Zhanji Liu
- Shandong Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Shubo Wan
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Bio-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
- College of Life Sciences, Shandong University, Jinan, China
- *Correspondence: Lei Shan, Shubo Wan,
| | - Lei Shan
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Bio-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
- College of Life Sciences, Shandong University, Jinan, China
- College of Life Sciences, Shandong Normal University, Jinan, China
- *Correspondence: Lei Shan, Shubo Wan,
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Abdullah HM, Chhikara S, Akbari P, Schnell DJ, Pareek A, Dhankher OP. Comparative transcriptome and metabolome analysis suggests bottlenecks that limit seed and oil yields in transgenic Camelina sativa expressing diacylglycerol acyltransferase 1 and glycerol-3-phosphate dehydrogenase. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:335. [PMID: 30574188 PMCID: PMC6299664 DOI: 10.1186/s13068-018-1326-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/30/2018] [Indexed: 05/14/2023]
Abstract
BACKGROUND Camelina sativa has attracted much interest as alternative renewable resources for biodiesel, other oil-based industrial products and a source for edible oils. Its unique oil attributes attract research to engineering new varieties of improved oil quantity and quality. The overexpression of enzymes catalyzing the synthesis of the glycerol backbone and the sequential conjugation of fatty acids into this backbone is a promising approach for increasing the levels of triacylglycerol (TAG). In a previous study, we co-expressed the diacylglycerol acyltransferase (DGAT1) and glycerol-3-phosphate dehydrogenase (GPD1), involved in TAG metabolism, in Camelina seeds. Transgenic plants exhibited a higher-percentage seed oil content, a greater seed mass, and overall improved seed and oil yields relative to wild-type plants. To further increase seed oil content in Camelina, we utilized metabolite profiling, in conjunction with transcriptome profiling during seed development to examine potential rate-limiting step(s) in the production of building blocks for TAG biosynthesis. RESULTS Transcriptomic analysis revealed approximately 2518 and 3136 transcripts differentially regulated at significant levels in DGAT1 and GPD1 transgenics, respectively. These transcripts were found to be involved in various functional categories, including alternative metabolic routes in fatty acid synthesis, TAG assembly, and TAG degradation. We quantified the relative contents of over 240 metabolites. Our results indicate major metabolic switches in transgenic seeds associated with significant changes in the levels of glycerolipids, amino acids, sugars, and organic acids, especially the TCA cycle and glycolysis intermediates. CONCLUSIONS From the transcriptomic and metabolomic analysis of DGAT1, GPD1 and DGAT1 + GPD1 expressing lines of C. sativa, we conclude that TAG production is limited by (1) utilization of fixed carbon from the source tissues supported by the increase in glycolysis pathway metabolites and decreased transcripts levels of transcription factors controlling fatty acids synthesis; (2) TAG accumulation is limited by the activity of lipases/hydrolases that hydrolyze TAG pool supported by the increase in free fatty acids and monoacylglycerols. This comparative transcriptomics and metabolomics approach is useful in understanding the regulation of TAG biosynthesis, identifying bottlenecks, and the corresponding genes controlling these pathways identified as limitations, for generating Camelina varieties with improved seed and oil yields.
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Affiliation(s)
- Hesham M. Abdullah
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003 USA
- Biotechnology Department, Faculty of Agriculture, Al-Azhar University, Cairo, 11651 Egypt
- Present Address: Department of Plant Biology, Michigan State University, East Lansing, MI 48824 USA
| | - Sudesh Chhikara
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003 USA
- Present Address: Centre for Biotechnology, Maharshi Dayanand University, Rohtak, 124001 India
| | - Parisa Akbari
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003 USA
| | - Danny J. Schnell
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824 USA
| | - Ashwani Pareek
- Stress Physiology and Molecular Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 100067 India
| | - Om Parkash Dhankher
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003 USA
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