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Li S, Yang J, Mohamed H, Wang X, Shi W, Xue F, López-García S, Liu Q, Song Y. AMP deaminase: A crucial regulator in nitrogen stress and lipid metabolism in Mucor circinelloides. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159434. [PMID: 38052250 DOI: 10.1016/j.bbalip.2023.159434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/22/2023] [Accepted: 11/22/2023] [Indexed: 12/07/2023]
Abstract
Lipid biosynthesis is a significant metabolic response to nitrogen starvation in oleaginous fungi. The oleaginous fungus Mucor circinelloides copes with nitrogen stress by degrading AMP through AMP deaminase (AMPD). However, the mechanism of AMPD in regulating lipogenesis remains largely unclear. To elucidate the mechanism of AMPD in lipid synthesis in this M. circinelloides, we identified two genes (ampd1 and ampd2) encoding AMPD and constructed an ampd double knockout mutant. The engineered M. circinelloides strain elevated cell growth and lipid accumulation, as well as the content of oleic acid (OA) and gamma-linolenic acid (GLA). In addition to the expected increase in transcription levels of genes associated with lipid and TAG synthesis, we observed suppression of lipid degradation and reduced amino acid biosynthesis. This suggested that the deletion of AMPD genes induces the redirection of carbon towards lipid synthesis pathways. Moreover, the pathways related to nitrogen metabolism, including nitrogen assimilation and purine metabolism (especially energy level), were also affected in order to maintain homeostasis. Further analysis discovered that the transcription factors (TFs) related to lipid accumulation were also regulated. This study provides new insights into lipid biosynthesis in M. circinelloides, indicating that the trigger for lipid accumulation is not entirely AMPD-dependent and suggest that there may be additional mechanisms involved in the initiation of lipogenesis.
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Affiliation(s)
- Shaoqi Li
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
| | - Junhuan Yang
- Department of Food Science, College of Food Science and Engineering, Lingnan Normal University, Zhanjiang 524048, China
| | - Hassan Mohamed
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China; Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Xiuwen Wang
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
| | - Wenyue Shi
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
| | - Futing Xue
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
| | - Sergio López-García
- Departmento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia 3100, Spain
| | - Qing Liu
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
| | - Yuanda Song
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
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Wu D, Zhang K, Li CY, Xie GW, Lu MT, Qian Y, Shu YP, Shen Q. Genome-wide comprehensive characterization and transcriptomic analysis of AP2/ERF gene family revealed its role in seed oil and ALA formation in perilla (Perilla frutescens). Gene 2023; 889:147808. [PMID: 37722611 DOI: 10.1016/j.gene.2023.147808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/06/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
Perilla (Perilla frutescens) is a potential specific oilseed crop with an extremely high α-linolenic acid (ALA) content in its seeds. AP2/ERF transcription factors (TFs) play important roles in multiple biological processes. However, limited information is known about the regulatory mechanism of the AP2/ERF family in perilla's oil accumulation. In this research, we identified 212 AP2/ERF family members in the genome of perilla, and their domain characteristics, collinearity, and sub-genome differentiation were comprehensively analyzed. Transcriptome sequencing revealed that genes encoding key enzymes involved in oil biosynthesis (e.g., ACCs, KASII, GPAT, PDAT and LPAAT) were up-regulated in the high-oil variety. Moreover, the endoplasmic reticulum-localized FAD2 and FAD3 were significantly up-regulated in the high-ALA variety. To investigate the roles of AP2/ERFs in lipid biosynthesis, we conducted a correlation analysis between non-redundant AP2/ERFs and key lipid metabolism genes using WGCNA. A significant correlation was found between 36 AP2/ERFs and 90 lipid metabolism genes. Among them, 12 AP2/ERFs were identified as hub genes and showed significant correlation with lipid synthase genes (e.g., FADs, GPAT and ACSL) and key regulatory TFs (e.g., LEC2, IAA, MYB, UPL3). Furthermore, gene expression analysis identified three AP2/ERFs (WRI, ABI4, and RAVI) potentially playing an important role in the regulation of oil accumulation in perilla. Our study suggests that PfAP2/ERFs are important regulatory TFs in the lipid biosynthesis pathway, providing a foundation for the molecular understanding of oil accumulation in perilla and other oilseed crops.
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Affiliation(s)
- Duan Wu
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Ke Zhang
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Chun-Yu Li
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Guan-Wen Xie
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Ming-Ting Lu
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Yong Qian
- Shanghai Standard Technology Co., Ltd, Building 25, 15 Gudan Road, Pudong, Shanghai 201314, China.
| | - Ya-Ping Shu
- Shanghai Standard Technology Co., Ltd, Building 25, 15 Gudan Road, Pudong, Shanghai 201314, China.
| | - Qi Shen
- Institute of Medical Plant Physiology and Ecology, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
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Wang Z, Xing S, Li M, Zhang Q, Yang Q, Xu P, Song B, Shang P, Yang M, Du C, Chen J, Liu S, Zhang S. Soybean WRINKLED1 protein GmWRI1a promotes flowering under long-day conditions via regulating expressions of flowering-related genes. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 337:111865. [PMID: 37696474 DOI: 10.1016/j.plantsci.2023.111865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 09/05/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023]
Abstract
Flowering time is an important agronomic character that influences the adaptability and yield of soybean [Glycine max (L.) Merrill]. WRINKLED 1 (WRI1) plays an important regulatory role in plant growth and development. In this study, we found that the expression of GmWIR1a could be induced by long days. Compared with the wild type, transgenic soybean overexpressing GmWRI1a showed earlier flowering and maturity under long days but no significant changes under short days. Overexpression of GmWRI1a led to up-regulated expression of genes involved in the regulation of flowering time. The GmWRI1a protein was able to directly bind to the promoter regions of GmAP1, GmFUL1a, GmFUL2 and up-regulated their expression. GmCOL3 was identified by yeast one-hybrid library screening using the GmWRI1a promoter as bait. GmCOL3 was revealed to be a nucleus-localized protein that represses the transcription of GmWRI1a. Expression of GmCOL3 was induced by short days. Taken together, the results show that overexpression of GmWRI1a promotes flowering under long days by promoting the transcriptional activity of flowering-related genes in soybean, and that GmCOL3 binds to the GmWRI1a promoter and directly down-regulates its transcription. This discovery reveals a new function for GmWRI1a, which regulates flowering and maturity in soybean.
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Affiliation(s)
- Zhikun Wang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Siqi Xing
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Meng Li
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Qingyan Zhang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Qiang Yang
- Center for Agricultural Technology, Northeast Institute of Geography and Agroecology, CAS, Harbin, China
| | - Pengfei Xu
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Bo Song
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Ping Shang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Mingming Yang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Changhuan Du
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Jihan Chen
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Shanshan Liu
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China.
| | - Shuzhen Zhang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China.
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Chen F, Lin W, Li W, Hu J, Li Z, Shi L, Zhang Z, Xiu Y, Lin S. Determination of superior Pistacia chinensis accession with high-quality seed oil and biodiesel production and revelation of LEC1/WRI1-mediated high oil accumulative mechanism for better developing woody biodiesel. BMC PLANT BIOLOGY 2023; 23:268. [PMID: 37208597 DOI: 10.1186/s12870-023-04267-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 05/06/2023] [Indexed: 05/21/2023]
Abstract
BACKGROUND Based on our previous studied on different provenances of Pistacia chinensis, some accessions with high quality and quantity of seed oils has emerged as novel source of biodiesel. To better develop P. chinensis seed oils as woody biodiesel, a concurrent exploration of oil content, FA profile, biodiesel yield, and fuel properties was conducted on the seeds from 5 plus germplasms to determine superior genotype for ideal biodiesel production. Another vital challenge is to unravel mechanism that govern the differences in oil content and FA profile of P. chinensis seeds across different accessions. FA biosynthesis and oil accumulation of oil plants are known to be highly controlled by the transcription factors. An integrated analysis of our recent transcriptome data, qRT-PCR detection and functional identification was performed as an attempt to highlight LEC1/WRI1-mediated transcription regulatory mechanism for high-quality oil accumulation in P. chinensis seeds. RESULTS To select ideal germplasm and unravel high oil accumulative mechanism for developing P. chinensis seed oils as biodiesel, five plus trees (accession PC-BJ/PC-AH/PC-SX/PC-HN/PC-HB) with high-yield seeds were selected to assess the variabilities in weight, oil content, FA profile, biodiesel yield and fuel property, revealing a variation in the levels of seed oil (50.76-60.88%), monounsaturated FA (42.80-70.72%) and polyunsaturated FA (18.78-43.35%), and biodiesel yield (84.98-98.15%) across different accessions. PC-HN had a maximum values of seed weight (26.23 mg), oil (60.88%) and biodiesel yield (98.15%), and ideal proportions of C18:1 (69.94%), C18:2 (17.65%) and C18:3 (1.13%), implying that seed oils of accession PC-HN was the most suitable for ideal biodiesel production. To highlight molecular mechanism that govern such differences in oil content and FA profile of different accessions, a combination of our recent transcriptome data, qRT-PCR detection and protein interaction analysis was performed to identify a pivotal role of LEC1/WRI1-mediated transcription regulatory network in high oil accumulation of P. chinensis seeds from different accessions. Notably, overexpression of PcWRI1 or PcLEC1 from P. chinensis seeds in Arabidopsis could facilitate seed development and upregulate several genes relevant for carbon flux allocation (plastidic glycolysis and acetyl-CoA generation), FA synthesis, TAG assembly and oil storage, causing an increase in seed oil content and monounsaturated FA level, destined for biodiesel fuel property improvement. Our findings may present strategies for better developing P. chinensis seed oils as biodiesel feedstock and bioengineering its high oil accumulation. CONCLUSIONS This is the first report on the cross-accessions assessments of P. chinensis seed oils to determine ideal accession for high-quality biodiesel production, and an effective combination of PcWRI1 or PcLEC1 overexpression, morphological assay, oil accumulation and qRT-PCR detection was applied to unravel a role of LEC1/WRI1-mediated regulatory network for oil accumulation in P. chinensis seeds, and to highlight the potential application of PcWRI1 or PcLEC1 for increasing oil production. Our finding may provide new strategies for developing biodiesel resource and molecular breeding.
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Affiliation(s)
- Feng Chen
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Weijun Lin
- Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Wei Li
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Jinhe Hu
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Zhi Li
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Lingling Shi
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Zhixiang Zhang
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Yu Xiu
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China.
| | - Shanzhi Lin
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China.
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Huang C, Li Y, Wang K, Xi J, Wang H, Zhu D, Jiang C, Si X, Shi D, Wang S, Li X, Huang J. WRINKLED1 Positively Regulates Oil Biosynthesis in Carya cathayensis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:6763-6774. [PMID: 37014130 DOI: 10.1021/acs.jafc.3c00358] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Hickory (Carya cathayensis Sarg.) is a kind of important woody oil tree species, and its nut has high nutritional value. Previous gene coexpression analysis showed that WRINKLED1 (WRI1) may be a core regulator during embryo oil accumulation in hickory. However, its specific regulatory mechanism on hickory oil biosynthesis has not been investigated. Herein, two hickory orthologs of WRI1 (CcWRI1A and CcWRI1B) containing two AP2 domains with AW-box binding sites and three intrinsically disordered regions (IDRs) but lacking the PEST motif in the C-terminus were characterized. They are nucleus-located and have self-activated ability. The expression of these two genes was tissue-specific and relatively high in the developing embryo. Notably, CcWRI1A and CcWRI1B can restore the low oil content, shrinkage phenotype, composition of fatty acid, and expression of oil biosynthesis pathway genes of Arabidopsis wri1-1 mutant seeds. Additionally, CcWRI1A/B were shown to modulate the expression of some fatty acid biosynthesis genes in the transient expression system of nonseed tissues. Transcriptional activation analysis further indicated that CcWRI1s directly activated the expression of SUCROSE SYNTHASE2 (SUS2), PYRUVATE KINASE β SUBUNIT 1 (PKP-β1), and BIOTIN CARBOXYL CARRIER PROTEIN2 (BCCP2) involved in oil biosynthesis. These results suggest that CcWRI1s can promote oil synthesis by upregulating some late glycolysis- and fatty acid biosynthesis-related genes. This work reveals the positive function of CcWRI1s in oil accumulation and provides a potential target for improving plant oil by bioengineering technology.
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Affiliation(s)
- Chunying Huang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Yan Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Ketao Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Jianwei Xi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Haoyu Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Dongmei Zhu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Chenyu Jiang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Xiaolin Si
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Duanshun Shi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Song Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
| | - Xiaobo Li
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Jianqin Huang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, Zhejiang 311300, China
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Elbar S, Maytal Y, David I, Carmeli-Weissberg M, Shaya F, Barnea-Danino Y, Bustan A, Harpaz-Saad S. Abscisic acid plays a key role in the regulation of date palm fruit ripening. FRONTIERS IN PLANT SCIENCE 2023; 13:1066142. [PMID: 36874915 PMCID: PMC9981646 DOI: 10.3389/fpls.2022.1066142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/21/2022] [Indexed: 06/18/2023]
Abstract
The date palm (Phoenix dactylifera L.) fruit is of major importance for the nutrition of broad populations in the world's desert strip; yet it is sorely understudied. Understanding the mechanism regulating date fruit development and ripening is essential to customise date crop to the climatic change, which elaborates yield losses due to often too early occurring wet season. This study aimed to uncover the mechanism regulating date fruit ripening. To that end, we followed the natural process of date fruit development and the effects of exogenous hormone application on fruit ripening in the elite cultivar 'Medjool'. The results of the current study indicate that the onset of fruit ripening occurre once the seed had reached maximum dry weight. From this point, fruit pericarp endogenous abscisic acid (ABA) levels consistently increased until fruit harvest. The final stage in fruit ripening, the yellow-to-brown transition, was preceded by an arrest of xylem-mediated water transport into the fruit. Exogenous ABA application enhanced fruit ripening when applied just before the green-to-yellow fruit color transition. Repeated ABA applications hastened various fruit ripening processes, resulting in earlier fruit harvest. The data presented supports a pivotal role for ABA in the regulation of date fruit ripening.
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Affiliation(s)
- Saar Elbar
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
| | - Yochai Maytal
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
| | - Itzhak David
- Ramat-Negev Desert Agro-Research Centre, Halutza, Israel
| | - Mira Carmeli-Weissberg
- Department of Fruit Tree Sciences, The Volcani Center, Agricultural Research Organization, Rishon LeZion, Israel
| | - Felix Shaya
- Department of Fruit Tree Sciences, The Volcani Center, Agricultural Research Organization, Rishon LeZion, Israel
| | | | - Amnon Bustan
- Ramat-Negev Desert Agro-Research Centre, Halutza, Israel
| | - Smadar Harpaz-Saad
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
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7
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Lin Z, Chen F, Wang H, Hu J, Shi L, Zhang Z, Xiu Y, Lin S. Evaluation of oil accumulation and biodiesel property of Lindera glauca fruits among different germplasms and revelation of high oil producing mechanism for developing biodiesel. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:14. [PMID: 36698212 PMCID: PMC9878744 DOI: 10.1186/s13068-023-02265-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Lindera glauca with rich resource and fruit oil has emerged as novel source of biodiesel in China, but different germplasms show a variation for fruit oil content and FA profile. To develop L. glauca fruit oils as biodiesel, a concurrent exploration of oil content, FA composition, biodiesel yield, fuel property and prediction model construction was conducted on the fruits from 8 plus germplasms to select superior genotype for ideal biodiesel production. Another vital focus was to highlight mechanism that govern the differences in oil content and FA profile of different germplasms. The cross-accessions comparisons associated with oil-synthesized gene transcriptional level and oil accumulative amount led to the identification of potential determinants (enzymes, transporters or transcription factors) and regulatory mechanisms responsible for high-quality oil accumulation. RESULTS To select superior germplasm and unravel regulatory mechanism of high oil production for developing L. glauca fruit oils as biodiesel, 8 plus trees (accession LG01/02/03/04/05/06/07/08) with high-yield fruits were selected to evaluate the differences in oil content, FA profile, biodiesel yield and fuel property, and to construct fuel property prediction model, revealing a variation in the levels of fruit oil (45.12-60.95%), monounsaturated FA (52.43-78.46%) and polyunsaturated FA (17.69-38.73%), and biodiesel yield (80.12-98.71%) across different accessions. Of note, LG06 had a maximum yield of oil (60.95%) and biodiesel (98.71%), and ideal proportions of C18:1 (77.89%), C18:2 (14.16%) and C18:3 (1.55%), indicating that fruit oils from accession LG06 was the most suitable for high-quality biodiesel production. To highlight molecular mechanism that govern such differences in oil content and FA composition of different accessions, the quantitative relationship between oil-synthesized gene transcription and oil accumulative amount were conducted on different accessions to identify some vital determinants (enzymes, transporters or transcription factors) with a model of carbon metabolic regulatory for high-quality oil accumulation by an integrated analysis of our recent transcriptome data and qRT-PCR detection. Our findings may present strategies for developing L. glauca fruit oils as biodiesel feedstock and engineering its oil accumulation. CONCLUSIONS This is the first report on the cross-accessions evaluations of L. glauca fruit oils to determine ideal accession for producing ideal biodiesel, and the associations of oil accumulative amount with oil-synthesized gene transcription was performed to identify some crucial determinants (enzymes, transporters or transcription factors) with metabolic regulation model established for governing high oil production. Our finding may provide molecular basis for new strategies of developing biodiesel resource and engineering oil accumulation.
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Affiliation(s)
- Zixin Lin
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083 China
| | - Feng Chen
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083 China
| | - Hongjuan Wang
- Department of Biochemistry and Molecular Biology, Yanjing Medical College, Capital Medical University, Beijing, 101300 China
| | - Jinhe Hu
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083 China
| | - Lingling Shi
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083 China
| | - Zhixiang Zhang
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083 China
| | - Yu Xiu
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083 China
| | - Shanzhi Lin
- Beijing Advanced Innovation Center for Tree Breeding By Molecular Design, College of Biological Sciences and Biotechnology, School of Soil and Water Conservation, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083 China
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8
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Lou H, Zheng S, Chen W, Yu W, Jiang H, Farag MA, Xiao J, Wu J, Song L. Transcriptome-referenced association study provides insights into the regulation of oil and fatty acid biosynthesis in Torreya grandis kernel. J Adv Res 2023:S2090-1232(23)00007-3. [PMID: 36639025 DOI: 10.1016/j.jare.2023.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/21/2022] [Accepted: 01/08/2023] [Indexed: 01/12/2023] Open
Abstract
INTRODUCTION Torreya grandis is a gymnosperm belonging to Taxodiaceae. As an economically important tree, its kernels are edible and rich in oil with high unsaturated fatty acids, such as sciadonic acid. However, the kernels from different T. grandis landraces exhibit fatty acid and oil content variations. OBJECTIVES As a gymnosperm, does T. grandis have special regulation mechanisms for oil biosynthesis? The aim of this study was to dissect the genetic architecture of fatty acid and oil content and the underlying mechanism in T. grandis. METHODS We constructed a high integrity reference sequence of expressed regions of the genome in T. grandis and performed transcriptome-referenced association study (TRAS) for 10 fatty acid and oil traits of kernels in the 170 diverse T. grandis landraces. To confirm the TRAS result, we performed functional validation and molecular biology experiments for oil significantly associated genes. RESULTS We identified 41 SNPs from 34 transcripts significantly associated with 7 traits by TRAS (-log10 (P) greater than 6.0). Results showed that LOB domain-containing protein 40 (LBD40) and surfeit locus protein 1 (SURF1) may be indirectly involved in the regulation of oil and sciadonic acid biosynthesis, respectively. Moreover, overexpression of TgLBD40 significantly increased seed oil content. The nonsynonymous variant in the TgLBD40 coding region discovered by TRAS could alter the oil content in plants. Pearson's correlation analysis and dual-luciferase assay indicated that TgLBD40 positively enhanced oil accumulation by affecting oil biosynthesis pathway genes, such as TgDGAT1. CONCLUSION Our study provides new insights into the genetic basis of oil biosynthesis in T. grandis and demonstrates that integrating RNA sequencing and TRAS is a powerful strategy to perform association study independent of a reference genome for dissecting important traits in T. grandis.
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Affiliation(s)
- Heqiang Lou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; NFGA Engineering Research Center for Torreya grandis 'Merrillii', Zhejiang A&F University, Hangzhou 311300, China
| | - Shan Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Wenchao Chen
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Weiwu Yu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Huifeng Jiang
- Key Laboratory of Systems Microbial Biotechnology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
| | - Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr el Aini st., Cairo P.B. 11562, Egypt
| | - Jianbo Xiao
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, E-32004 Ourense, Spain.
| | - Jiasheng Wu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; NFGA Engineering Research Center for Torreya grandis 'Merrillii', Zhejiang A&F University, Hangzhou 311300, China.
| | - Lili Song
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; NFGA Engineering Research Center for Torreya grandis 'Merrillii', Zhejiang A&F University, Hangzhou 311300, China.
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9
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Khan FS, Goher F, Zhang D, Shi P, Li Z, Htwe YM, Wang Y. Is CRISPR/Cas9 a way forward to fast-track genetic improvement in commercial palms? Prospects and limits. FRONTIERS IN PLANT SCIENCE 2022; 13:1042828. [PMID: 36578341 PMCID: PMC9791139 DOI: 10.3389/fpls.2022.1042828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Commercially important palms (oil palm, coconut, and date palm) are widely grown perennial trees with tremendous commercial significance due to food, edible oil, and industrial applications. The mounting pressure on the human population further reinforces palms' importance, as they are essential crops to meet vegetable oil needs around the globe. Various conventional breeding methods are used for the genetic improvement of palms. However, adopting new technologies is crucial to accelerate breeding and satisfy the expanding population's demands. CRISPR/Cas9 is an efficient genome editing tool that can incorporate desired traits into the existing DNA of the plant without losing common traits. Recent progress in genome editing in oil palm, coconut and date palm are preliminarily introduced to potential readers. Furthermore, detailed information on available CRISPR-based genome editing and genetic transformation methods are summarized for researchers. We shed light on the possibilities of genome editing in palm crops, especially on the modification of fatty acid biosynthesis in oil palm. Moreover, the limitations in genome editing, including inadequate target gene screening due to genome complexities and low efficiency of genetic transformation, are also highlighted. The prospects of CRISPR/Cas9-based gene editing in commercial palms to improve sustainable production are also addressed in this review paper.
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Affiliation(s)
- Faiza Shafique Khan
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
- Hainan Key Laboratory of Tropical Oil Crops Biology, Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences, Wenchang, Hainan, China
| | - Farhan Goher
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Dapeng Zhang
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Key Laboratory of Tropical Oil Crops Biology, Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences, Wenchang, Hainan, China
| | - Peng Shi
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Key Laboratory of Tropical Oil Crops Biology, Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences, Wenchang, Hainan, China
| | - Zhiying Li
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Key Laboratory of Tropical Oil Crops Biology, Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences, Wenchang, Hainan, China
| | - Yin Min Htwe
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
- Hainan Key Laboratory of Tropical Oil Crops Biology, Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences, Wenchang, Hainan, China
| | - Yong Wang
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Key Laboratory of Tropical Oil Crops Biology, Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences, Wenchang, Hainan, China
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10
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Kim HU, Li D. Editorial: Dissection of the molecular basis of fatty acid composition in oil crops and molecular breeding of oil crops with improved fatty acid composition. FRONTIERS IN PLANT SCIENCE 2022; 13:1053735. [PMID: 36340413 PMCID: PMC9632414 DOI: 10.3389/fpls.2022.1053735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Hyun Uk Kim
- Department of Bioindustry and Bioresource Engineering, Plant Engineering Research Institute, Sejong University, Seoul, South Korea
| | - Dongdong Li
- College of Tropical Crops, Hainan University, Haikou, China
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11
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Yang Y, Kong Q, Lim ARQ, Lu S, Zhao H, Guo L, Yuan L, Ma W. Transcriptional regulation of oil biosynthesis in seed plants: Current understanding, applications, and perspectives. PLANT COMMUNICATIONS 2022; 3:100328. [PMID: 35605194 PMCID: PMC9482985 DOI: 10.1016/j.xplc.2022.100328] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/28/2022] [Accepted: 04/14/2022] [Indexed: 05/11/2023]
Abstract
Plants produce and accumulate triacylglycerol (TAG) in their seeds as an energy reservoir to support the processes of seed germination and seedling development. Plant seed oils are vital not only for the human diet but also as renewable feedstocks for industrial use. TAG biosynthesis consists of two major steps: de novo fatty acid biosynthesis in the plastids and TAG assembly in the endoplasmic reticulum. The latest advances in unraveling transcriptional regulation have shed light on the molecular mechanisms of plant oil biosynthesis. We summarize recent progress in understanding the regulatory mechanisms of well-characterized and newly discovered transcription factors and other types of regulators that control plant fatty acid biosynthesis. The emerging picture shows that plant oil biosynthesis responds to developmental and environmental cues that stimulate a network of interacting transcriptional activators and repressors, which in turn fine-tune the spatiotemporal regulation of the pathway genes.
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Affiliation(s)
- Yuzhou Yang
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Que Kong
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Audrey R Q Lim
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Shaoping Lu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Hu Zhao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Liang Guo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, China.
| | - Ling Yuan
- Department of Plant and Soil Sciences, Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY 40546, USA; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Wei Ma
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore.
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12
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Huang R, Liu M, Gong G, Wu P, Bai M, Qin H, Wang G, Liao H, Wang X, Li Y, Wu H, Wang X, Yang C, Schubert D, Zhang S. BLISTER promotes seed maturation and fatty acid biosynthesis by interacting with WRINKLED1 to regulate chromatin dynamics in Arabidopsis. THE PLANT CELL 2022; 34:2242-2265. [PMID: 35262735 PMCID: PMC9134064 DOI: 10.1093/plcell/koac083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 03/01/2022] [Indexed: 05/09/2023]
Abstract
WRINKLED1 (WRI1) is an important transcription factor that regulates seed oil biosynthesis. However, how WRI1 regulates gene expression during this process remains poorly understood. Here, we found that BLISTER (BLI) is expressed in maturing Arabidopsis thaliana seeds and acts as an interacting partner of WRI1. bli mutant seeds showed delayed maturation, a wrinkled seed phenotype, and reduced oil content, similar to the phenotypes of wri1. In contrast, BLI overexpression resulted in enlarged seeds and increased oil content. Gene expression and genetic analyses revealed that BLI plays a role in promoting the expression of WRI1 targets involved in fatty acid biosynthesis and regulates seed maturation together with WRI1. BLI is recruited by WRI1 to the AW boxes in the promoters of fatty acid biosynthesis genes. BLI shows a mutually exclusive interaction with the Polycomb-group protein CURLY LEAF (CLF) or the chromatin remodeling factor SWITCH/SUCROSE NONFERMENTING 3B (SWI3B), which facilitates gene expression by modifying nucleosomal occupancy and histone modifications. Together, these data suggest that BLI promotes the expression of fatty acid biosynthesis genes by interacting with WRI1 to regulate chromatin dynamics, leading to increased fatty acid production. These findings provide insights into the roles of the WRI1-BLI-CLF-SWI3B module in mediating seed maturation and gene expression.
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Affiliation(s)
| | | | - Guanping Gong
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Pingzhi Wu
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Mei Bai
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Hongting Qin
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Guohe Wang
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Huimei Liao
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Xiaoxiu Wang
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Yanqun Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Hong Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Xiaojing Wang
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Chengwei Yang
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Daniel Schubert
- Institute for Biology, Freie Universität Berlin, Berlin 14195, Germany
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13
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Li Y, Wang X, Zhang X, Liu Z, Peng L, Hao Q, Liu Z, Men S, Tong N, Shu Q. ABSCISIC ACID-INSENSITIVE 5-ω3 FATTY ACID DESATURASE3 module regulates unsaturated fatty acids biosynthesis in Paeonia ostii. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 317:111189. [PMID: 35193738 DOI: 10.1016/j.plantsci.2022.111189] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/26/2021] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
Paeonia ostii is an authorized novel vegetable oil crop due to its seeds rich in unsaturated fatty acids (UFAs) especially α-linolenic acid (ALA), which overweight the current available edible oil. However, little is known on the regulation mechanism of UFAs biosynthesis during its seed development. Here, we used transcriptome and proteome data combining phytochemistry means to uncover the relationship between abscisic acid (ABA) signaling and UFAs biosynthesis during P. ostii seed development. Based on transcriptome and proteome analysis, two desaturases of omega-6 and omega-3 fatty acid, named as PoFAD2 and PoFAD3 responsible for ALA biosynthesis were identified. Then, an ABSCISIC ACID-INSENSITIVE 5 (ABI5) proteins was identified as an upstream transcriptional factor, which activated the expression of PoFAD3 instead of PoFAD2. Moreover, silencing of PoABI5 repressed the response of PoFAD3 to ABA. This study provides the first view on the connection between the function of ABA signaling factors and ALA biosynthesis in the P. ostii seed, which lays the foundation for studies on the regulatory mechanism of ABA signaling involved in the UFAs synthesis during seeds development, meanwhile, it will shed light on manipulation of ALA content for satisfying human demands on high quality of edible oil or healthy supplement.
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Affiliation(s)
- Yang Li
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China.
| | - Xiruo Wang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China; University of the Chinese Academy of Sciences, Beijing, 100049, China.
| | - Xiao Zhang
- College of Landscape and Forestry, Qingdao Agricultural University, Qingdao, 266109, China.
| | - Zheng'an Liu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China.
| | - Liping Peng
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China.
| | - Qing Hao
- College of Landscape and Forestry, Qingdao Agricultural University, Qingdao, 266109, China.
| | - Zenggen Liu
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, the Chinese Academy of Sciences, Xining, 810008, China.
| | - Siqi Men
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China; University of the Chinese Academy of Sciences, Beijing, 100049, China.
| | - Ningning Tong
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China; University of the Chinese Academy of Sciences, Beijing, 100049, China.
| | - Qingyan Shu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China.
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14
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Nizan IEF, Kamaruddin K, Ong PW, Ramli Z, Singh R, Rose RJ, Chan PL. Overexpression of Oil Palm Early Nodulin 93 Protein Gene (EgENOD93) Enhances In Vitro Shoot Regeneration in Arabidopsis thaliana. Mol Biotechnol 2022; 64:743-757. [PMID: 35107753 DOI: 10.1007/s12033-022-00450-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 01/04/2022] [Indexed: 11/28/2022]
Abstract
EgENOD93 was first identified in a cDNA microarray study of oil palm tissue culture where it was highly expressed in leaf explants with embryogenic potential. Functional characterization via an RNA interference study of its orthologue in Medicago truncatula demonstrated a significant role of this gene in somatic embryo formation. In this study, EgENOD93 was overexpressed in the important model plant Arabidopsis thaliana to investigate the embryogenic potential of EgENOD93 transgenic Arabidopsis explants compared to explants from control plants (pMDC140 and WT). Experiments using leaf explants revealed higher numbers of regenerated shoots at day 27 in all the homozygous transgenic Arabidopsis cultures (Tg01, Tg02 and Tg03) compared to controls. The expression level of EgENOD93 in Arabidopsis cultures was quantified using reverse transcription quantitative real-time PCR (RT-qPCR). The results supported the overexpression of this gene in transgenic Arabidopsis cultures, with 6 and 10 times higher expression of EgENOD93 in callus at Day 9 and Day 20, respectively. Overall, the results support the role of EgENOD93 in the enhancement of shoot regeneration in transgenic Arabidopsis. This together with the previous results observed in oil palm and Medicago truncatula suggests that ENOD93 plays a key role in the induction of somatic embryogenesis. A similarity to early nodulation-like ontogeny is possible.
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Affiliation(s)
- Intan Ernieza Farhana Nizan
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Katialisa Kamaruddin
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Pei-Wen Ong
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia.,Institute of Plant Biology, National Taiwan University, No. 1, Section 4, Roosevelt Road, 10617, Taipei, Taiwan, ROC
| | - Zubaidah Ramli
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Rajinder Singh
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Ray J Rose
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Pek-Lan Chan
- Advanced Biotechnology and Breeding Centre, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia.
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15
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Yang W, Hu J, Behera JR, Kilaru A, Yuan Y, Zhai Y, Xu Y, Xie L, Zhang Y, Zhang Q, Niu L. A Tree Peony Trihelix Transcription Factor PrASIL1 Represses Seed Oil Accumulation. FRONTIERS IN PLANT SCIENCE 2021; 12:796181. [PMID: 34956296 PMCID: PMC8702530 DOI: 10.3389/fpls.2021.796181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 11/22/2021] [Indexed: 05/31/2023]
Abstract
In many higher plants, seed oil accumulation is governed by complex multilevel regulatory networks including transcriptional regulation, which primarily affects fatty acid biosynthesis. Tree peony (Paeonia rockii), a perennial deciduous shrub endemic to China is notable for its seed oil that is abundant in unsaturated fatty acids. We discovered that a tree peony trihelix transcription factor, PrASIL1, localized in the nucleus, is expressed predominantly in developing seeds during maturation. Ectopic overexpression of PrASIL1 in Nicotiana benthamiana leaf tissue and Arabidopsis thaliana seeds significantly reduced total fatty acids and altered the fatty acid composition. These changes were in turn associated with the decreased expression of multitudinous genes involved in plastidial fatty acid synthesis and oil accumulation. Thus, we inferred that PrASIL1 is a critical transcription factor that represses oil accumulation by down-regulating numerous key genes during seed oil biosynthesis. In contrary, up-regulation of oil biosynthesis genes and a significant increase in total lipids and several major fatty acids were observed in PrASIL1-silenced tree peony leaves. Together, these results provide insights into the role of trihelix transcription factor PrASIL1 in controlling seed oil accumulation. PrASIL1 can be targeted potentially for oil enhancement in tree peony and other crops through gene manipulation.
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Affiliation(s)
- Weizong Yang
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
| | - Jiayuan Hu
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
| | - Jyoti R. Behera
- Department of Biological Sciences, East Tennessee State University, Johnson City, TN, United States
| | - Aruna Kilaru
- Department of Biological Sciences, East Tennessee State University, Johnson City, TN, United States
| | - Yanping Yuan
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
| | - Yuhui Zhai
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
| | - Yanfeng Xu
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
| | - Lihang Xie
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yanlong Zhang
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
| | - Qingyu Zhang
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
| | - Lixin Niu
- College of Landscape Architecture and Arts, Northwest A&F University, Yangling, China
- Oil Peony Engineering Technology Research Center of National Forestry Administration, Yangling, China
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16
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Shi P, Hua W, Htwe YM, Zhang D, Li J, Wang Y. Abscisic Acid Improves Linoleic Acid Accumulation Possibly by Promoting Expression of EgFAD2 and Other Fatty Acid Biosynthesis Genes in Oil Palm Mesocarp. FRONTIERS IN PLANT SCIENCE 2021; 12:748130. [PMID: 34925403 PMCID: PMC8678531 DOI: 10.3389/fpls.2021.748130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/29/2021] [Indexed: 06/02/2023]
Abstract
Abscisic acid plays an important role in fruit development. However, the effect of ABA on fatty acid biosynthesis in oil palm is still unknown. In this study, ABA treatments (CK, A1-A4) were applied to oil palm fruit at 16 WAP (weeks after pollination), and fatty acids in the mesocarp at 24 WAP were analyzed by GC-MS. Results showed that linoleic acid content under treatment A2 (20 μM ABA) was significantly higher (slightly increased by 8.33%) than the control. Therefore, mesocarp samples of A2, and the control at 16, 20, and 24 WAP was sampled for RNA-Seq. KEGG pathway enrichment analysis showed that 43 genes were differentially expressed in the fatty acid biosynthesis pathway, of which expression of EgFAD2 (unigene 105050201) under 20 μM ABA treatment was 1.84-fold higher than in the control at 20 WAP. Further sequence analysis found that unigene 105050201 had more ABA-responsive elements (ABRE), complete conserved domains, and a C-terminal signaling motif among two FAD2 copies. Furthermore, WGCNA and correlation analysis showed co-expression of EgFAD2 (unigene 105050201) with transcription factors (TFs) (WRI1, AP2-EREBP, bZIP, bHLH, C2C2-Dof, MYB, NAC, and WRKY), ABA signaling genes (PYR, PP2C, SnRK, and ABI5), and other genes involved in fatty acid biosynthesis (FATA, FATB, LACS, SAD, Oleosins, and so on). These results indicated that ABA treatment promoted the expression of FAD2 and other genes involved in fatty acid biosynthesis, which possibly resulted in the accumulation of linoleic acid. This study will be helpful for understanding the possible mechanisms through which ABA affects fatty acid biosynthesis and their accumulation in the mesocarp of oil palm.
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Affiliation(s)
- Peng Shi
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan, China
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/SanYa Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
| | - Wei Hua
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan, China
| | - Yin Min Htwe
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/SanYa Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
| | - Dapeng Zhang
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/SanYa Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
| | - Jun Li
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan, China
| | - Yong Wang
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions/SanYa Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
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17
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Sabbadini S, Capocasa F, Battino M, Mazzoni L, Mezzetti B. Improved nutritional quality in fruit tree species through traditional and biotechnological approaches. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.01.083] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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18
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Wang Y, Zou J, Zhao J, Zheng Y, Li D. EgmiR5179 Regulates Lipid Metabolism by Targeting EgMADS16 in the Mesocarp of Oil Palm ( Elaeis guineensis). FRONTIERS IN PLANT SCIENCE 2021; 12:722596. [PMID: 34381490 PMCID: PMC8350733 DOI: 10.3389/fpls.2021.722596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
EgMADS16, one of the MADS-box transcription factors in oil palm, has a high expression level in the late fruit development of the oil palm fruit mesocarp. At the same time, it is also predicted to be the target gene of EgmiR5179, which has been identified in previous research. In this paper, we focused on the function and regulatory mechanism of the EgMADS16 gene in oil palm lipid metabolism. The results indicated that the transcription level of EgMADS16 was highest in the fourth stage, and a dual-luciferase reporter assay proved that the EgMADS16 expression level was downregulated by EgmiR5179. In both the OXEgMADS16 Arabidopsis seeds and oil palm embryonic calli, the total lipid contents were significantly decreased, but the contents of C18:0 and C18:3 in OXEgMADS16 lines were significantly increased. As expected, EgmiR5179 weakened the inhibitory effect of EgMADS16 on the oil contents in transgenic Arabidopsis plants that coexpressed EgmiR5179 and EgMADS16 (OXEgmiR5179-EgMADS16). Moreover, yeast two-hybrid and BiFC analyses suggested that there was an interaction between the EgMADS16 protein and EgGLO1 protein, which had been proven to be capable of regulating fatty acid synthesis in our previous research work. In summary, a model of the molecular mechanism by which miRNA5179 targets EgMADS16 to regulate oil biosynthesis was hypothesized, and the research results provide new insight into lipid accumulation and molecular regulation in oil palm.
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Affiliation(s)
- Yifei Wang
- College of Tropical Crops, Hainan University, Haikou, China
| | - Jixin Zou
- College of Tropical Crops, Hainan University, Haikou, China
- Rubber Research Institute of Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, China
| | - Jin Zhao
- College of Tropical Crops, Hainan University, Haikou, China
| | - Yusheng Zheng
- College of Tropical Crops, Hainan University, Haikou, China
| | - Dongdong Li
- College of Tropical Crops, Hainan University, Haikou, China
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19
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Lu L, Wei W, Li QT, Bian XH, Lu X, Hu Y, Cheng T, Wang ZY, Jin M, Tao JJ, Yin CC, He SJ, Man WQ, Li W, Lai YC, Zhang WK, Chen SY, Zhang JS. A transcriptional regulatory module controls lipid accumulation in soybean. THE NEW PHYTOLOGIST 2021; 231:661-678. [PMID: 33864683 DOI: 10.1111/nph.17401] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 03/29/2021] [Indexed: 05/19/2023]
Abstract
Soybean (Glycine max) is one of the most important oilseed crops. However, the regulatory mechanism that governs the process of oil accumulation in soybean remains poorly understood. In this study, GmZF392, a tandem CCCH zinc finger (TZF) protein which was identified in our previous RNA-seq analysis of seed-preferred transcription factors, was found to function as a positive regulator of lipid production. GmZF392 promotes seed oil accumulation in both transgenic Arabidopsis and stable transgenic soybean plants by binding to a bipartite cis-element, containing TG- and TA-rich sequences, in promoter regions, activating the expression of genes in the lipid biosynthesis pathway. GmZF392 physically interacts with GmZF351, our previously identified transcriptional regulator of lipid biosynthesis, to synergistically promote downstream gene expression. Both GmZF392 and GmZF351 are further upregulated by GmNFYA, another transcription factor involved in lipid biosynthesis, directly (in the former case) and indirectly (in the latter case). Promoter sequence diversity analysis showed that the GmZF392 promoter may have been selected at the origin of the Glycine genus and further mildly selected during domestication from wild soybeans to cultivated soybeans. Our study reveals a regulatory module containing three transcription factors in the lipid biosynthesis pathway, and manipulation of the module may improve oil production in soybean and other oilseed crops.
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Affiliation(s)
- Long Lu
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wei Wei
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Qing-Tian Li
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiao-Hua Bian
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiang Lu
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yang Hu
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tong Cheng
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhou-Ya Wang
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Meng Jin
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian-Jun Tao
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Cui-Cui Yin
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Si-Jie He
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wei-Qun Man
- Institute of Soybean Research, Heilongjiang Provincial Academy of Agricultural Sciences, Harbin, 150086, China
| | - Wei Li
- Institute of Farming and Cultivation, Heilongjiang Provincial Academy of Agricultural Sciences, Harbin, 150086, China
| | - Yong-Cai Lai
- Institute of Farming and Cultivation, Heilongjiang Provincial Academy of Agricultural Sciences, Harbin, 150086, China
| | - Wan-Ke Zhang
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shou-Yi Chen
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jin-Song Zhang
- State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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20
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Ji H, Liu D, Yang Z. High oil accumulation in tuber of yellow nutsedge compared to purple nutsedge is associated with more abundant expression of genes involved in fatty acid synthesis and triacylglycerol storage. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:54. [PMID: 33653389 PMCID: PMC7923336 DOI: 10.1186/s13068-021-01909-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 02/18/2021] [Indexed: 05/10/2023]
Abstract
BACKGROUND Yellow nutsedge is a unique plant species that can accumulate up to 35% oil of tuber dry weight, perhaps the highest level observed in the tuber tissues of plant kingdom. To gain insight into the molecular mechanism that leads to high oil accumulation in yellow nutsedge, gene expression profiles of oil production pathways involved carbon metabolism, fatty acid synthesis, triacylglycerol synthesis, and triacylglycerol storage during tuber development were compared with purple nutsedge, the closest relative of yellow nutsedge that is poor in oil accumulation. RESULTS Compared with purple nutsedge, high oil accumulation in yellow nutsedge was associated with significant up-regulation of specific key enzymes of plastidial RubisCO bypass as well as malate and pyruvate metabolism, almost all fatty acid synthesis enzymes, and seed-like oil-body proteins. However, overall transcripts for carbon metabolism toward carbon precursor for fatty acid synthesis were comparable and for triacylglycerol synthesis were similar in both species. Two seed-like master transcription factors ABI3 and WRI1 were found to display similar transcript patterns but were expressed at 6.5- and 14.3-fold higher levels in yellow nutsedge than in purple nutsedge, respectively. A weighted gene co-expression network analysis revealed that ABI3 was in strong transcriptional coordination with WRI1 and other key oil-related genes. CONCLUSIONS These results implied that pyruvate availability and fatty acid synthesis in plastid, along with triacylglycerol storage in oil bodies, rather than triacylglycerol synthesis in endoplasmic reticulum, are the major factors responsible for high oil production in tuber of yellow nutsedge, and ABI3 most likely plays a critical role in regulating oil accumulation. This study is of significance with regard to understanding the molecular mechanism controlling carbon partitioning toward oil production in oil-rich tuber and provides a valuable reference for enhancing oil accumulation in non-seed tissues of crops through genetic breeding or metabolic engineering.
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Affiliation(s)
- Hongying Ji
- Key Lab of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Dantong Liu
- Key Lab of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Zhenle Yang
- Key Lab of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093 China
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21
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Rajavel A, Klees S, Schlüter JS, Bertram H, Lu K, Schmitt AO, Gültas M. Unravelling the Complex Interplay of Transcription Factors Orchestrating Seed Oil Content in Brassica napus L. Int J Mol Sci 2021; 22:1033. [PMID: 33494188 PMCID: PMC7864344 DOI: 10.3390/ijms22031033] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/13/2021] [Accepted: 01/17/2021] [Indexed: 11/16/2022] Open
Abstract
Transcription factors (TFs) and their complex interplay are essential for directing specific genetic programs, such as responses to environmental stresses, tissue development, or cell differentiation by regulating gene expression. Knowledge regarding TF-TF cooperations could be promising in gaining insight into the developmental switches between the cultivars of Brassica napus L., namely Zhongshuang11 (ZS11), a double-low accession with high-oil- content, and Zhongyou821 (ZY821), a double-high accession with low-oil-content. In this regard, we analysed a time series RNA-seq data set of seed tissue from both of the cultivars by mainly focusing on the monotonically expressed genes (MEGs). The consideration of the MEGs enables the capturing of multi-stage progression processes that are orchestrated by the cooperative TFs and, thus, facilitates the understanding of the molecular mechanisms determining seed oil content. Our findings show that TF families, such as NAC, MYB, DOF, GATA, and HD-ZIP are highly involved in the seed developmental process. Particularly, their preferential partner choices as well as changes in their gene expression profiles seem to be strongly associated with the differentiation of the oil content between the two cultivars. These findings are essential in enhancing our understanding of the genetic programs in both cultivars and developing novel hypotheses for further experimental studies.
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Affiliation(s)
- Abirami Rajavel
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (S.K.); (J.-S.S.); (H.B.); (A.O.S.)
| | - Selina Klees
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (S.K.); (J.-S.S.); (H.B.); (A.O.S.)
| | - Johanna-Sophie Schlüter
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (S.K.); (J.-S.S.); (H.B.); (A.O.S.)
| | - Hendrik Bertram
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (S.K.); (J.-S.S.); (H.B.); (A.O.S.)
| | - Kun Lu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China;
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing 400715, China
- State Cultivation Base of Crop Stress Biology, Southern Mountainous Land of Southwest University, Beibei, Chongqing 400715, China
| | - Armin Otto Schmitt
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (S.K.); (J.-S.S.); (H.B.); (A.O.S.)
- Center for Integrated Breeding Research (CiBreed), Albrecht-Thaer-Weg 3, Georg-August University, 37075 Göttingen, Germany
| | - Mehmet Gültas
- Breeding Informatics Group, Department of Animal Sciences, Georg-August University, Margarethe von Wrangell-Weg 7, 37075 Göttingen, Germany; (A.R.); (S.K.); (J.-S.S.); (H.B.); (A.O.S.)
- Center for Integrated Breeding Research (CiBreed), Albrecht-Thaer-Weg 3, Georg-August University, 37075 Göttingen, Germany
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22
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Ge Y, Zang X, Yang Y, Wang T, Ma W. In-depth analysis of potential PaAP2/ERF transcription factor related to fatty acid accumulation in avocado (Persea americana Mill.) and functional characterization of two PaAP2/ERF genes in transgenic tomato. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 158:308-320. [PMID: 33234384 DOI: 10.1016/j.plaphy.2020.11.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 11/13/2020] [Indexed: 05/24/2023]
Abstract
Fatty acids in avocado fruit are crucial components influencing taste as well as fruit quality and nutritional value. Changes to fatty acid contents and concentrations in avocado fruit are important because of the associated effects on sensory properties. Hence, plant physiologists and molecular biologists interested in elucidating the influence of transcription factors on fatty acid accumulation in avocado fruit. In this study, APETALA2/ethylene-responsive factor (AP2/ERF) family members in avocado (Persea americana Mill.) were systematically and comprehensively analyze to identify potential PaAP2/ERF genes related to fatty acid accumulation. The results of bioinformatics analysis and the expression profiles of the AP2/ERF members suggested that 10 highly expressed PaAP2/ERF genes may encode transcription factors with functions related to the fatty acid accumulation in the avocado mesocarp. Furthermore, PaWRI1 and PaWRI2, two AP2/ERF transcription factor genes in avocado, were functionally characterized regarding their effects on fatty acid accumulation. The transcriptome and biochemical analyses of PaWRI1-2-overexpressing transgenic tomato plants revealed the up-regulated expression of 17 unigenes related to fatty acid synthesis and triacylglycerol assembly as well as increased fatty acid contents relative to the corresponding levels in the wild-type plants. In contrast, the overexpression of PaWRI2 in transgenic tomato plants up-regulated the expression of only six unigenes associated with fatty acid synthesis and triacylglycerol assembly and negligibly affected fatty acid accumulation when compared with wild-type plants. This systematic analysis provides a foundation for future studies regarding AP2/ERF functions associated with fatty acid accumulation.
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Affiliation(s)
- Yu Ge
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 570102, China.
| | - Xiaoping Zang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 570102, China
| | - Ying Yang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 570102, China
| | - Tao Wang
- Institute of Vegetable, Liaoning Academy of Agricultural Sciences, Shenyang, Liaoning, 110161, China
| | - Weihong Ma
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 570102, China.
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23
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Zhao X, Yang G, Liu X, Yu Z, Peng S. Integrated Analysis of Seed microRNA and mRNA Transcriptome Reveals Important Functional Genes and microRNA-Targets in the Process of Walnut ( Juglans regia) Seed Oil Accumulation. Int J Mol Sci 2020; 21:ijms21239093. [PMID: 33260456 PMCID: PMC7731449 DOI: 10.3390/ijms21239093] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/17/2020] [Accepted: 11/27/2020] [Indexed: 11/30/2022] Open
Abstract
Walnut (Juglans regia) is known as a promising woody oil crop with abundant polyunsaturated fatty acids in its kernel. However, the regulation mechanism of walnut oil accumulation and fatty acid metabolism is still poorly understood, which restricted the breeding and genetic improvement of high-quality oil-bearing walnuts. To reveal the molecular mechanism of walnut oil accumulation, considering the potential regulation of microRNA (miRNA) in seed development, in this study, the oil content of walnut kernel on the 80th, 100th and 120th day after flowering (DAF) was tested and the corresponding proportions are 11.51%, 40.40% and 53.20%. Between DAF of 80th~120th, the content of stearic acid and oleic acid tended to increase, but the proportion of other fatty acids tended to decrease. Meanwhile, comparative transcriptome and sRNA-seq analysis on three stages (80th, 100th and 120th DAF), found 204 conserved miRNAs and 554 novel miRNAs in walnut kernels, among which 104 key genes related to walnut oil accumulation were screened. The phospholipid:diacylglycerol acyltransferase metabolic pathway may contribute more to oil accumulation in walnut. 16 miRNA-mRNA regulatory modules related to walnut oil accumulation and fatty acid synthesis were constructed. 8 known miRNAs and 9 novel miRNAs regulate 28 genes involved in fatty acid (FA) metabolism and lipid synthesis. Among them, jre-miRn105, jre-miRn434, jre-miR477d and jre-miR156a.2 are key miRNAs that regulate walnut FA synthesis. Jre-miRn411 and jre-miR399a.1 are closely related to oil accumulation. These data provide new insights and lay the foundation for subsequent studies on walnut FA synthesis and oil accumulation.
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Affiliation(s)
- Xinchi Zhao
- Laboratory of Walnut Research Center, College of Forestry, Northwest A & F University, Yangling 712100, Shaanxi, China; (X.Z.); (G.Y.); (Z.Y.)
| | - Guiyan Yang
- Laboratory of Walnut Research Center, College of Forestry, Northwest A & F University, Yangling 712100, Shaanxi, China; (X.Z.); (G.Y.); (Z.Y.)
| | - Xiaoqiang Liu
- Department of Foreign Languages, Northwest A & F University, Yangling 712100, Shaanxi, China;
| | - Zhongdong Yu
- Laboratory of Walnut Research Center, College of Forestry, Northwest A & F University, Yangling 712100, Shaanxi, China; (X.Z.); (G.Y.); (Z.Y.)
| | - Shaobing Peng
- Laboratory of Walnut Research Center, College of Forestry, Northwest A & F University, Yangling 712100, Shaanxi, China; (X.Z.); (G.Y.); (Z.Y.)
- Correspondence: ; Tel.: +86-135-7293-1369
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24
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Li SY, Zhang Q, Jin YH, Zou JX, Zheng YS, Li DD. A MADS-box gene, EgMADS21, negatively regulates EgDGAT2 expression and decreases polyunsaturated fatty acid accumulation in oil palm (Elaeis guineensis Jacq.). PLANT CELL REPORTS 2020; 39:1505-1516. [PMID: 32804247 DOI: 10.1007/s00299-020-02579-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 08/06/2020] [Indexed: 05/13/2023]
Abstract
EgMADS21 regulates PUFA accumulation in oil palm. Oil palm (Elaeis guineensis Jacq.) is the most productive world oil crop, accounting for 36% of world plant oil production. However, the molecular mechanism of the transcriptional regulation of fatty acid accumulation and lipid synthesis in the mesocarp of oil palm by up- or downregulating the expression of genes involved in related pathways remains largely unknown. Here, an oil palm MADS-box gene, EgMADS21, was screened in a yeast one-hybrid assay using the EgDGAT2 promoter sequence as bait. EgMADS21 is preferentially expressed in early mesocarp developmental stages in oil palm fruit and presents a negative correlation with EgDGAT2 expression. The direct binding of EgMADS21 to the EgDGAT2 promoter was confirmed by electrophoretic mobility shift assay. Subsequently, transient expression of EgMADS21 in oil palm protoplasts revealed that EgMADS21 not only binds to the EgDGAT2 promoter but also negatively regulates the expression of EgDGAT2. Furthermore, EgMADS21 was stably overexpressed in transgenic oil palm embryoids by Agrobacterium-mediated transformation. In three independent transgenic lines, EgDGAT2 expression was significantly suppressed by the expression of EgMADS21. The content of linoleic acid (C18:2) in the three transgenic embryoids was significantly decreased, while that of oleic acid (C18:1) was significantly increased. Combined with the substrate preference of EgDGAT2 identified in previous research, the results demonstrate the molecular mechanism by which EgMADS21 regulates EgDGAT2 expression and ultimately affects fatty acid accumulation in the mesocarp of oil palm.
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Affiliation(s)
- Si-Yu Li
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Qing Zhang
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Yuan-Hang Jin
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Ji-Xin Zou
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Yu-Sheng Zheng
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Dong-Dong Li
- College of Tropical Crops, Hainan University, Hainan, 570228, China.
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25
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Yarra R, Cao H, Jin L, Mengdi Y, Zhou L. CRISPR/Cas mediated base editing: a practical approach for genome editing in oil palm. 3 Biotech 2020; 10:306. [PMID: 32566443 DOI: 10.1007/s13205-020-02302-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 06/11/2020] [Indexed: 10/24/2022] Open
Abstract
The improvement of the yield and quality of oil palm via precise genome editing has been indispensable goal for oil palm breeders. Genome editing via the CRISPR/Cas9 (CRISPR-associated protein 9) system, ZFN (zinc finger nucleases) and TALEN (transcription activator-like effector nucleases) has flourished as an efficient technology for precise target modifications in the genomes of various crops. Among the genome editing technologies, base editing approach has emerged as novel technology that could generate single base changes i.e. irreversible conversion of one target base in to other in a programmable manner. A base editor (adenine or cytosine) is a fusion of catalytically inactive CRISPR-Cas9 domain (Cas9 variants) and cytosine or adenosine deaminase domain that introduces desired point mutations. However, till date no such genetic modifications have ever been developed in oil palm via base editing technology. Precise genome editing via base editing approach can be a challenging task in oil palm due to its complex genome as well as difficulties in tissue culture and genetic transformation methods. However, availability of whole genome sequencing data in oil palm provides a platform for developing the base editing technology. Here, we briefly review the potential application and future implications of base editing technology for the genetic improvement of oil palm.
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26
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Kong Q, Yang Y, Guo L, Yuan L, Ma W. Molecular Basis of Plant Oil Biosynthesis: Insights Gained From Studying the WRINKLED1 Transcription Factor. FRONTIERS IN PLANT SCIENCE 2020; 11:24. [PMID: 32117370 PMCID: PMC7011094 DOI: 10.3389/fpls.2020.00024] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 01/10/2020] [Indexed: 05/25/2023]
Abstract
Most plant species generate and store triacylglycerol (TAG) in their seeds, serving as a core supply of carbon and energy to support seedling development. Plant seed oils have a wide variety of applications, from being essential for human diets to serving as industrial renewable feedstock. WRINKLED1 (WRI1) transcription factor plays a central role in the transcriptional regulation of plant fatty acid biosynthesis. Since the discovery of Arabidopsis WRI1 gene (AtWRI1) in 2004, the function of WRI1 in plant oil biosynthesis has been studied intensively. In recent years, the identification of WRI1 co-regulators and deeper investigations of the structural features and molecular functions of WRI1 have advanced our understanding of the mechanism of the transcriptional regulation of plant oil biosynthesis. These advances also help pave the way for novel approaches that will better utilize WRI1 for bioengineering oil production in crops.
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Affiliation(s)
- Que Kong
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Yuzhou Yang
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Liang Guo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Ling Yuan
- Department of Plant and Soil Sciences, Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, United States
| | - Wei Ma
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
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Wang M, Gao L, Li G, Zhou C, Jian J, Xing Z, Wang Y, Zhang W, Song Z, Hu Y, Yang J. Interspecific Variation in the Unsaturation Level of Seed Oils Were Associated With the Expression Pattern Shifts of Duplicated Desaturase Genes and the Potential Role of Other Regulatory Genes. FRONTIERS IN PLANT SCIENCE 2020; 11:616338. [PMID: 33519875 PMCID: PMC7838364 DOI: 10.3389/fpls.2020.616338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 12/22/2020] [Indexed: 05/08/2023]
Abstract
Seed oils are of great economic importance both for human consumption and industrial applications. The nutritional quality and industrial value of seed oils are mostly determined by their fatty acid profiles, especially the relative proportions of unsaturated fatty acids. Tree peony seed oils have recently been recognized as novel edible oils enriched in α-linolenic acid (ALA). However, congeneric species, such as Paeonia ostii and P. ludlowii, showed marked variation in the relative proportions of different unsaturated fatty acids. By comparing the dynamics of fatty acid accumulation and the time-course gene expression patterns between P. ostii and P. ludlowii, we identified genes that were differentially expressed between two species in developing seeds, and showed congruent patterns of variation between expression levels and phenotypes. In addition to the well-known desaturase and acyltransferase genes associated with fatty acid desaturation, among them were some genes that were conservatively co-expressed with the desaturation pathway genes across phylogenetically distant ALA-rich species, including Camelina sativa and Perilla frutescens. Go enrichment analysis revealed that these genes were mainly involved in transcriptional regulation, protein post-translational modification and hormone biosynthesis and response, suggesting that the fatty acid synthesis and desaturation pathway might be subject to multiple levels of regulation.
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Affiliation(s)
- Mengli Wang
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
| | - Lexuan Gao
- Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Gengyun Li
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
| | - Chengchuan Zhou
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
| | - Jinjing Jian
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
| | - Zhen Xing
- Tibet Agricultural and Animal Husbandry University, Linzhi, China
| | - Yuguo Wang
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
| | - Wenju Zhang
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
| | - Zhiping Song
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
| | - Yonghong Hu
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, China
- *Correspondence: Yonghong Hu,
| | - Ji Yang
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-Chongming (IEC), Fudan University, Shanghai, China
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, China
- *Correspondence: Yonghong Hu,
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He M, Qin CX, Wang X, Ding NZ. Plant Unsaturated Fatty Acids: Biosynthesis and Regulation. FRONTIERS IN PLANT SCIENCE 2020; 11:390. [PMID: 32425958 PMCID: PMC7212373 DOI: 10.3389/fpls.2020.00390] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 03/18/2020] [Indexed: 05/11/2023]
Abstract
In most plants, major unsaturated fatty acids (UFAs) are three C18 species, namely, oleic (18:1), linoleic (18:2), and α-linolenic (18:3) acids. These simple compounds play multiple crucial roles in planta and are also important economic traits of oil crops. The enzymatic steps of C18 UFA biosynthesis have been well established. However, the associated FA/lipid trafficking between the plastid and the endoplasmic reticulum remains largely unclear, as does the regulation of the expression and activities of the involved enzymes. In this review, we will revisit the biosynthesis of C18 UFAs with an emphasis on the trafficking, and present an overview of the key enzymes and their regulation. Of particular interest is the emerging regulatory network composed of transcriptional factors and upstream signaling pathways. The review thereby provides the promise of using physical, biochemical and/or genetic means to manipulate FA composition and increase oil yield in crop improvement.
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Zhang Q, Sun R, Zheng Y, Yuan Y, Li D. Isolation and characterization of the EgWRI1 promoter from oil palm (Elaeis guineensis Jacq.) and its response to environmental stress and ethylene. PLoS One 2019; 14:e0225115. [PMID: 31800586 PMCID: PMC6892528 DOI: 10.1371/journal.pone.0225115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 10/28/2019] [Indexed: 11/18/2022] Open
Abstract
WRI1 is a plant-specific transcription factor that enhances the accumulation of oils through the upregulation of the expression of genes involved in glycolysis and fatty acid biosynthesis. In this study, the EgWRI1 promoter from oil palm was isolated and characterized in transgenic Arabidopsis. The sequence analysis results revealed that various putative plant regulatory elements are present in the EgWRI1 promoter region. The EgWRI1 promoter and beta-glucuronidase (GUS) reporter gene were transcriptionally fused and transformed into Arabidopsis thaliana. Histochemical analysis revealed that GUS staining was very strong in whole seedlings, especially the stems, leaves, and siliques. Moreover, GUS staining was strong in the silique coats but weak in the seeds. Furthermore, to detect whether EgWRI1 was induced by environmental stress, we detected the expression efficiency of the EgWRI1 promoter in transgenic Arabidopsis treated with low temperature, darkness, and exogenous ethylene. The results showed that the activity of the EgWRI1 promoter was induced by darkness but suppressed significantly when exposed to exogenous ethylene. When treated with low temperature, the activity of the EgWRI1 promoter was first reduced after 24 hours but recovered after 48 hours. Taken together, these results reveal the features of the EgWRI1 promoter from oil palm, which will be helpful for improving oil accumulation in oil palm via reasonable cultivation methods.
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Affiliation(s)
- Qing Zhang
- Department of Biotechnology, College of Tropical Crops, Hainan University, Hainan, China
| | - Ruhao Sun
- Department of Biotechnology, College of Tropical Crops, Hainan University, Hainan, China
| | - Yusheng Zheng
- Department of Biotechnology, College of Tropical Crops, Hainan University, Hainan, China
| | - Yijun Yuan
- Department of Bioengineering, College of Life Sciences and Pharmacy, Hainan University, Haikou, Hainan, China
- * E-mail: (YY); (DL)
| | - Dongdong Li
- Department of Biotechnology, College of Tropical Crops, Hainan University, Hainan, China
- * E-mail: (YY); (DL)
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Zafar S, Li YL, Li NN, Zhu KM, Tan XL. Recent advances in enhancement of oil content in oilseed crops. J Biotechnol 2019; 301:35-44. [PMID: 31158409 DOI: 10.1016/j.jbiotec.2019.05.307] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/14/2019] [Accepted: 05/29/2019] [Indexed: 10/26/2022]
Abstract
Plant oils are very valuable agricultural commodity. The manipulation of seed oil composition to deliver enhanced fatty acid compositions, which are appropriate for feed or fuel, has always been a main objective of metabolic engineers. The last two decennary have been noticeable by numerous significant events in genetic engineering for identification of different gene targets to improve oil yield in oilseed crops. Particularly, genetic engineering approaches have presented major breakthrough in elevating oil content in oilseed crops such as Brassica napus and soybean. Additionally, current research efforts to explore the possibilities to modify the genetic expression of key regulators of oil accumulation along with biochemical studies to elucidate lipid biosynthesis will establish protocols to develop transgenic oilseed crops along much improved oil content. In this review, we describe current distinct genetic engineering approaches investigated by researchers for ameliorating oil content and its nutritional quality. Moreover, we will also discuss some auspicious and innovative approaches and challenges for engineering oil content to yield oil at much higher rate in oilseed crops.
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Affiliation(s)
- Sundus Zafar
- School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China; Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Yu-Long Li
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Nan-Nan Li
- School of Resource and Environment, Southwest University, Chongqing, 400715, People's Republic of China
| | - Ke-Ming Zhu
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Xiao-Li Tan
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, People's Republic of China.
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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: 35] [Impact Index Per Article: 7.0] [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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Vogel PA, Bayon de Noyer S, Park H, Nguyen H, Hou L, Changa T, Khang HL, Ciftci ON, Wang T, Cahoon EB, Clemente TE. Expression of the Arabidopsis WRINKLED 1 transcription factor leads to higher accumulation of palmitate in soybean seed. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:1369-1379. [PMID: 30575262 PMCID: PMC6577354 DOI: 10.1111/pbi.13061] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/12/2018] [Accepted: 12/17/2018] [Indexed: 05/30/2023]
Abstract
Soybean (Glycine max [L.] Merr.) is a commodity crop highly valued for its protein and oil content. The high percentage of polyunsaturated fatty acids in soybean oil results in low oxidative stability, which is a key parameter for usage in baking, high temperature frying applications, and affects shelf life of packaged products containing soybean oil. Introduction of a seed-specific expression cassette carrying the Arabidopsis transcription factor WRINKLED1 (AtWRI1) into soybean, led to seed oil with levels of palmitate up to approximately 20%. Stacking of the AtWRI1 transgenic allele with a transgenic locus harbouring the mangosteen steroyl-ACP thioesterase (GmFatA) resulted in oil with total saturates up to 30%. The creation of a triple stack in soybean, wherein the AtWRI1 and GmFatA alleles were combined with a FAD2-1 silencing allele led to the synthesis of an oil with 28% saturates and approximately 60% oleate. Constructs were then assembled that carry a dual FAD2-1 silencing element/GmFatA expression cassette, alone or combined with an AtWRI1 cassette. These plasmids are designated pPTN1289 and pPTN1301, respectively. Transgenic events carrying the T-DNA of pPTN1289 displayed an oil with stearate levels between 18% and 25%, and oleate in the upper 60%, with reduced palmitate (<5%). While soybean events harboring transgenic alleles of pPTN1301 had similar levels of stearic and oleate levels as that of the pPTRN1289 events, but with levels of palmitate closer to wild type. The modified fatty acid composition results in an oil with higher oxidative stability, and functionality attributes for end use in baking applications.
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Affiliation(s)
- Pamela A. Vogel
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Shen Bayon de Noyer
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Hyunwoo Park
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
- Present address:
LG ChemSeoulKorea
| | - Hanh Nguyen
- Center for BiotechnologyUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Lili Hou
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Taity Changa
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Hoang Le Khang
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Ozan N. Ciftci
- Department of Food Science & TechnologyUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Tong Wang
- Department of Food Science and Human NutritionIowa State UniversityAmesIAUSA
| | - Edgar B. Cahoon
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of BiochemistryUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Tom Elmo Clemente
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
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Zheng Y, Chen C, Liang Y, Sun R, Gao L, Liu T, Li D. Genome-wide association analysis of the lipid and fatty acid metabolism regulatory network in the mesocarp of oil palm (Elaeis guineensis Jacq.) based on small noncoding RNA sequencing. TREE PHYSIOLOGY 2019; 39:356-371. [PMID: 30137626 DOI: 10.1093/treephys/tpy091] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/12/2018] [Accepted: 07/25/2018] [Indexed: 05/20/2023]
Abstract
Oil palm (Elaeis guineensis Jacq.) is the highest oil-yielding crop in the plant kingdom and accumulates 90% of palm oil in the mesocarp. However, the regulatory mechanisms of lipid and fatty acid (FA) metabolism in oil palm are just beginning to be understood, and more studies are needed, especially in the understanding of small noncoding RNA (ncRNA) and mRNA. Based on the deep sequencing of small noncoding RNAs and the degradome in five developmental mesocarp stages, 452 microRNAs (miRNAs), including 170 conserved known-miRNAs (kn-miRNAs) and 282 novel-miRNA (nov-miRNAs), were identified. After predicting the targets of those miRNAs to 37 FA synthesis-related genes, we found that 22 kn-miRNAs and 14 nov-miRNAs might be involved in FA metabolism pathways. Among them, eg-miR156c, eg-miR397, eg-miR444b and nov-miR129 regulated FA synthesis in plastids and the transport of FA-ACP from plastids to the endoplasmic reticulum by targeting acetyl-CoA carboxylase 1 (ACC1), long-chain acyl-CoA synthetase 9 (LACS9), LACS4 and enoyl-ACP reductase (ENR), respectively. Nov-miR138 and nov-miR59 targeted glycerol-3-phosphate acyltransferase (GPAT), and nov-miR274 targeted phosphatidate phosphatase 1 (PAP1). Both target genes are involved in triacylglycerol synthesis in the endoplasmic reticulum. Eg-miR156e and eg-miR156j played pivotal roles by targeting β-ketoacyl-CoA synthase 12 (KCS12), and nov-miR201 targets very-long-chain enoyl-CoA reductase (ECR). Several miRNAs were also predicted to indirectly regulate FA synthesis and lipid metabolism through the squamosa promoter-binding protein-like gene (SPL), NAC and MYB transcription factors. As a whole, indications of a complex and extensive miRNA-mRNA regulatory network associated with FA metabolism in the mesocarp of the oil palm is presented. The results help to broaden the knowledge of potential mechanisms that might be regulated by miRNAs through modulation of the expression of FA-related target gene metabolism in the oil palm.
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Affiliation(s)
- Yusheng Zheng
- Department of Biotechnology, Hainan Key Laboratory for Sustainable Utilization of Tropic Bioresource, Hainan University, Haikou, Hainan, China
| | | | - Yuanxue Liang
- Department of Biotechnology, Hainan Key Laboratory for Sustainable Utilization of Tropic Bioresource, Hainan University, Haikou, Hainan, China
| | - Ruhao Sun
- Department of Biotechnology, Hainan Key Laboratory for Sustainable Utilization of Tropic Bioresource, Hainan University, Haikou, Hainan, China
| | - Lingchao Gao
- Department of Biotechnology, Hainan Key Laboratory for Sustainable Utilization of Tropic Bioresource, Hainan University, Haikou, Hainan, China
| | - Tao Liu
- Annoroad Gene Technology Co., Ltd, Beijing, China
| | - Dongdong Li
- Department of Biotechnology, Hainan Key Laboratory for Sustainable Utilization of Tropic Bioresource, Hainan University, Haikou, Hainan, China
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Wang M, Xu Z, Ahmed RI, Wang Y, Hu R, Zhou G, Kong Y. Tubby-like Protein 2 regulates homogalacturonan biosynthesis in Arabidopsis seed coat mucilage. PLANT MOLECULAR BIOLOGY 2019; 99:421-436. [PMID: 30707395 DOI: 10.1007/s11103-019-00827-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 01/19/2019] [Indexed: 06/09/2023]
Abstract
A possible transcription factor TLP2 was identified to be involved in the regulation of HG biosynthesis in Arabidopsis seed mucilage. TLP2 can translocate into nucleus from plasma membrane by interacting with NF-YC3. The discovery of TLP2 gene function can further fulfill the regulatory network of pectin biosynthesis in Arabidopsis thaliana. Arabidopsis seed coat mucilage is an excellent model system to study the biosynthesis, function and regulation of pectin. Rhamnogalacturonan I (RG-I) and homogalacturonan (HG) are the major polysaccharides constituent of the Arabidopsis seed coat mucilage. Here, we identified a Tubby-like gene, Tubby-like protein 2 (TLP2), which was up-regulated in developing siliques when mucilage began to be produced. Ruthenium red (RR) staining of the seeds showed defective mucilage of tlp2-1 mutant after vigorous shaking compared to wild type (WT). Monosaccharide composition analysis revealed that the amount of total sugars and galacturonic acid (GalA) decreased significantly in the adherent mucilage (AM) of tlp2-1 mutant. Immunolabelling and dot immunoblotting analysis showed that unesterified HG decreased in the tlp2-1 mutant. Furthermore, TLP2 can translocate into nucleus by interacting with Nuclear Factor Y subunit C3 (NF-YC3) to function as a transcription factor. RNA-sequence and transactivation assays revealed that TLP2 could activate UDP-glucose 4-epimerase 1 (UGE1). In all, it is concluded that TLP2 could regulate the biosynthesis of HG possibly through the positive activation of UGE1.
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Affiliation(s)
- Meng Wang
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
- Graduate School of Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Zongchang Xu
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Rana Imtiaz Ahmed
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
- Graduate School of Chinese Academy of Agricultural Science, Beijing, 100081, China
| | - Yiping Wang
- Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
- Graduate School of University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruibo Hu
- Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Gongke Zhou
- Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yingzhen Kong
- Key Laboratory for Tobacco Gene Resources, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China.
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Hassan H, Amiruddin MD, Weckwerth W, Ramli US. Deciphering key proteins of oil palm (Elaeis guineensis
Jacq.) fruit mesocarp development by proteomics and chemometrics. Electrophoresis 2018; 40:254-265. [DOI: 10.1002/elps.201800232] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 10/22/2018] [Accepted: 10/25/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Hasliza Hassan
- Advanced Biotechnology and Breeding Centre (ABBC); Malaysian Palm Oil Board (MPOB); Selangor Malaysia
| | - Mohd Din Amiruddin
- Advanced Biotechnology and Breeding Centre (ABBC); Malaysian Palm Oil Board (MPOB); Selangor Malaysia
| | - Wolfram Weckwerth
- Department of Ecogenomics and Systems Biology; Faculty of Life Sciences; University of Vienna; Vienna Austria
- Vienna Metabolomics Center (VIME); University of Vienna; Vienna Austria
| | - Umi Salamah Ramli
- Advanced Biotechnology and Breeding Centre (ABBC); Malaysian Palm Oil Board (MPOB); Selangor Malaysia
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Wang Y, Xu W, Chen Z, Han B, Haque ME, Liu A. Gene structure, expression pattern and interaction of Nuclear Factor-Y family in castor bean (Ricinus communis). PLANTA 2018; 247:559-572. [PMID: 29119268 DOI: 10.1007/s00425-017-2809-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 11/03/2017] [Indexed: 06/07/2023]
Abstract
Nuclear Factor-Y transcription factors, which function in regulating seed development (including storage reservoir accumulation) and responding to abiotic stresses, were identified and characterized in castor bean. Nuclear Factor-Y (NF-Y) transcription factors in plants contain three subunits (NF-YA, NF-YB and NF-YC), and function as a heterodimer or heterotrimer complex in regulating plant growth, development and response to stresses. Castor bean (Ricinus communis, Euphorbiaceae) one of the most economically important non-edible oilseed crops, able to grow in diverse soil conditions and displays high tolerance to abiotic stresses. Due to increasing demands for its seed oils, it is necessary to elucidate the molecular mechanism underlying the regulation of growth and development. Based on the available genome data, we identified 25 RcNF-Y members including six RcNF-YAs, 12 RcNF-YBs and seven RcNF-YCs, and characterized their gene structures. Yeast two-hybrid assays confirmed the protein-protein interactions among three subunits. Using transcriptomic data from different tissues, we found that six members were highly or specifically expressed in endosperms (in particular, two LEC1-type members RcNF-YB2 and RcNF-YB12), implying their involvement in regulating seed development and storage reservoir accumulation. Further, we investigated the expression changes of RcNF-Y members in two-week-old seedlings under drought, cold, hot and salt stresses. We found that the expression levels of 20 RcNF-Y members tested were changed and three RcNF-Y members might function in response to abiotic stresses. This study is the first reported on genomic characterization of NF-Y transcription factors in the family Euphorbiaceae. Our results provide the basis for improved understanding of how NF-Y genes function in the regulation of seed development and responses to abiotic stresses in both castor bean and other plants in this family.
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Affiliation(s)
- Yue Wang
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Wei Xu
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Zexi Chen
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Bing Han
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Mohammad E Haque
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Aizhong Liu
- Yunnan Key Laboratory for Wild Plant Resources, Department of Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
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Bi C, Ma Y, Wang XF, Zhang DP. Overexpression of the transcription factor NF-YC9 confers abscisic acid hypersensitivity in Arabidopsis. PLANT MOLECULAR BIOLOGY 2017; 95:425-439. [PMID: 28924726 PMCID: PMC5688200 DOI: 10.1007/s11103-017-0661-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 09/13/2017] [Indexed: 05/19/2023]
Abstract
Nuclear factor Y (NF-Y) family proteins are involved in many developmental processes and responses to environmental cues in plants, but whether and how they regulate phytohormone abscisic acid (ABA) signaling need further studies. In the present study, we showed that over-expression of the NF-YC9 gene confers ABA hypersensitivity in both the early seedling growth and stomatal response, while down-regulation of NF-YC9 does not affect ABA response in these processes. We also showed that over-expression of the NF-YC9 gene confers salt and osmotic hypersensitivity in early seedling growth, which is likely to be directly associated with the ABA hypersensitivity. Further, we observed that NF-YC9 physically interacts with the ABA-responsive bZIP transcription factor ABA-INSENSITIVE5 (ABI5), and facilitates the function of ABI5 to bind and activate the promoter of a target gene EM6. Additionally, NF-YC9 up-regulates expression of the ABI5 gene in response to ABA. These findings show that NF-YC9 may be involved in ABA signaling as a positive regulator and likely functions redundantly together with other NF-YC members, and support the model that the NF-YC9 mediates ABA signaling via targeting to and aiding the ABA-responsive transcription factors such as ABI5.
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Affiliation(s)
- Chao Bi
- MOE Systems Biology and Bioinformatics Laboratory, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Yu Ma
- MOE Systems Biology and Bioinformatics Laboratory, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Xiao-Fang Wang
- MOE Systems Biology and Bioinformatics Laboratory, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Da-Peng Zhang
- MOE Systems Biology and Bioinformatics Laboratory, Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
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