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Liao W, Guo R, Qian K, Shi W, Whelan J, Shou H. The acyl-acyl carrier protein thioesterases GmFATA1 and GmFATA2 are essential for fatty acid accumulation and growth in soybean. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:823-838. [PMID: 38224529 DOI: 10.1111/tpj.16638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 12/24/2023] [Accepted: 01/05/2024] [Indexed: 01/17/2024]
Abstract
Acyl-acyl carrier protein (ACP) thioesterases (FAT) hydrolyze acyl-ACP complexes to release FA in plastids, which ultimately affects FA biosynthesis and profiles. Soybean GmFATA1 and GmFATA2 are homoeologous genes encoding oleoyl-ACP thioesterases whose role in seed oil accumulation and plant growth has not been defined. Using CRISPR/Cas9 gene editing mutation of Gmfata1 or 2 led to reduced leaf FA content and growth defect at the early seedling stage. In contrast, no homozygous double mutants were obtained. Combined this indicates that GmFATA1 and GmFATA2 display overlapping, but not complete functional redundancy. Combined transcriptomic and lipidomic analysis revealed a large number of genes involved in FA synthesis and FA chain elongation are expressed at reduced level in the Gmfata1 mutant, accompanied by a lower triacylglycerol abundance at the early seedling stage. Further analysis showed that the Gmfata1 or 2 mutants had increased composition of the beneficial FA, oleic acid. The growth defect of Gmfata1 could be at least partially attributed to reduced acetyl-CoA carboxylase activity, reduced abundance of five unsaturated monogalactosyldiacylglycerol lipids, and altered chloroplast morphology. On the other hand, overexpression of GmFATA in soybean led to significant increases in leaf FA content by 5.7%, vegetative growth, and seed yield by 26.9%, and seed FA content by 23.2%. Thus, overexpression of GmFATA is an effective strategy to enhance soybean oil content and yield.
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Affiliation(s)
- Wenying Liao
- State Key Lab of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Runze Guo
- State Key Lab of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Kun Qian
- State Key Lab of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - Wanxuan Shi
- State Key Lab of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
| | - James Whelan
- State Key Lab of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
- The Provincial International Science and Technology Cooperation Base on Engineering Biology, International Campus of Zhejiang University, Haining, Zhejiang, 314400, China
| | - Huixia Shou
- State Key Lab of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, P. R. China
- The Provincial International Science and Technology Cooperation Base on Engineering Biology, International Campus of Zhejiang University, Haining, Zhejiang, 314400, China
- Hainan Institute, Zhejiang University, Sanya, Hainan, 572025, China
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Klider LM, Machado CD, Almeida VPD, Tirloni CAS, Marques AAM, Palozi RAC, Lorençone BR, Romão PVM, Guarnier LP, Casserimo NS, Silva DB, Cavalcanti TB, Raman V, Khan IA, Gasparotto Junior A, Budel JM. Cuphea calophylla var . mesostemon (Koehne) S.A. Graham: A Whole-Ethnopharmacological Investigation. J Med Food 2020; 24:394-410. [PMID: 32985931 DOI: 10.1089/jmf.2020.0069] [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] [Indexed: 01/08/2023] Open
Abstract
Several species of Cuphea are used medicinally and are reported to have cardioprotective, diuretic, and antihypertensive properties. In Brazil, Cuphea species are collectively called "sete-sangrias" due to their similar appearances and are also used interchangeably for the same therapeutic purposes. So the aim of the study was to characterize morphoanatomy of leaves and stems, evaluate the safety, and investigate the diuretic, hypotensive, vasodilatory, and antioxidant properties of ethanol-soluble fraction of Cuphea calophylla var. mesostemon (Koehne) S.A. Graham. Initially, the morphoanatomical characterization of the leaves and stems of C. calophylla var. mesostemon was performed. For the pharmacological evaluation, the ethanol-soluble fraction from Cuphea calophylla (ESCC) was obtained and chemically characterized by high-performance liquid chromatography coupled with a diode array detector and tandem mass spectrometry techniques. Then, acute toxicity, diuretic, hypotensive, antioxidant, and vasodilatory effects were evaluated in Wistar rats. The main chemical compounds identified from ESCC were gallic acid derivatives, ellagitannins, and flavonoids. ESCC showed no acute toxic effect. ESCC showed no acute toxic effect and the estimated median lethal dose (LD50) was above 2000 mg/kg. ESCC treatment (30, 100, and 300 mg/kg) did not present any significant acute diuretic or hypotensive effects. However, an important reduction in the elimination of electrolytes was observed after the acute administration, and a significant increase in renal sodium elimination was observed after 7 days of treatment. In the cardiac tissue, the groups treated with ESCC presented significant increase in superoxide dismutase activity.
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Affiliation(s)
- Lislaine Maria Klider
- Ponta Grossa State University, Pharmacy Department, Pharmaceutical Sciences Post-Grad Program, Ponta Grossa, PR, Brazil
| | - Camila Dias Machado
- Ponta Grossa State University, Pharmacy Department, Pharmaceutical Sciences Post-Grad Program, Ponta Grossa, PR, Brazil
| | - Valter Paes de Almeida
- Ponta Grossa State University, Pharmacy Department, Pharmaceutical Sciences Post-Grad Program, Ponta Grossa, PR, Brazil
| | - Cleide Adriane Signor Tirloni
- Federal University of Grande Dourados, Faculty of Health Sciences, Laboratory of Electrophysiology and Cardiovascular Pharmacology, Dourados, MS, Brazil
| | - Aline Aparecida Macedo Marques
- Federal University of Grande Dourados, Faculty of Health Sciences, Laboratory of Electrophysiology and Cardiovascular Pharmacology, Dourados, MS, Brazil
| | - Rhanany Alan Calloi Palozi
- Federal University of Grande Dourados, Faculty of Health Sciences, Laboratory of Electrophysiology and Cardiovascular Pharmacology, Dourados, MS, Brazil
| | - Bethânia Rosa Lorençone
- Federal University of Grande Dourados, Faculty of Health Sciences, Laboratory of Electrophysiology and Cardiovascular Pharmacology, Dourados, MS, Brazil
| | - Paulo Vitor Moreira Romão
- Federal University of Grande Dourados, Faculty of Health Sciences, Laboratory of Electrophysiology and Cardiovascular Pharmacology, Dourados, MS, Brazil
| | - Lucas Pires Guarnier
- Federal University of Grande Dourados, Faculty of Health Sciences, Laboratory of Electrophysiology and Cardiovascular Pharmacology, Dourados, MS, Brazil
| | - Nadla Soares Casserimo
- Federal University of Mato Grosso do Sul, Faculty of Pharmaceutical Sciences, Food and Nutrition, Laboratory of Natural Products and Mass Spectrometry, Campo Grande, MS, Brazil
| | - Denise Brentan Silva
- Federal University of Mato Grosso do Sul, Faculty of Pharmaceutical Sciences, Food and Nutrition, Laboratory of Natural Products and Mass Spectrometry, Campo Grande, MS, Brazil
| | | | - Vijayasankar Raman
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, USA
| | - Ikhlas Ahmed Khan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, Mississippi, USA
| | - Arquimedes Gasparotto Junior
- Federal University of Grande Dourados, Faculty of Health Sciences, Laboratory of Electrophysiology and Cardiovascular Pharmacology, Dourados, MS, Brazil
| | - Jane Manfron Budel
- Ponta Grossa State University, Pharmacy Department, Pharmaceutical Sciences Post-Grad Program, Ponta Grossa, PR, Brazil
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Yuan L, Li R. Metabolic Engineering a Model Oilseed Camelina sativa for the Sustainable Production of High-Value Designed Oils. FRONTIERS IN PLANT SCIENCE 2020; 11:11. [PMID: 32117362 PMCID: PMC7028685 DOI: 10.3389/fpls.2020.00011] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/08/2020] [Indexed: 05/06/2023]
Abstract
Camelina sativa (L.) Crantz is an important Brassicaceae oil crop with a number of excellent agronomic traits including low water and fertilizer input, strong adaptation and resistance. Furthermore, its short life cycle and easy genetic transformation, combined with available data of genome and other "-omics" have enabled camelina as a model oil plant to study lipid metabolism regulation and genetic improvement. Particularly, camelina is capable of rapid metabolic engineering to synthesize and accumulate high levels of unusual fatty acids and modified oils in seeds, which are more stable and environmentally friendly. Such engineered camelina oils have been increasingly used as the super resource for edible oil, health-promoting food and medicine, biofuel oil and high-valued chemical production. In this review, we mainly highlight the latest advance in metabolic engineering towards the predictive manipulation of metabolism for commercial production of desirable bio-based products using camelina as an ideal platform. Moreover, we deeply analysis camelina seed metabolic engineering strategy and its promising achievements by describing the metabolic assembly of biosynthesis pathways for acetyl glycerides, hydroxylated fatty acids, medium-chain fatty acids, ω-3 long-chain polyunsaturated fatty acids, palmitoleic acid (ω-7) and other high-value oils. Future prospects are discussed, with a focus on the cutting-edge techniques in camelina such as genome editing application, fine directed manipulation of metabolism and future outlook for camelina industry development.
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Affiliation(s)
- Lixia Yuan
- College of Biological Science and Technology, Jinzhong University, Jinzhong, China
| | - Runzhi Li
- Institute of Molecular Agriculture and Bioenergy, Shanxi Agricultural University, Taigu, China
- *Correspondence: Runzhi Li,
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Kim HJ, Silva JE, Iskandarov U, Andersson M, Cahoon RE, Mockaitis K, Cahoon EB. Structurally divergent lysophosphatidic acid acyltransferases with high selectivity for saturated medium chain fatty acids from Cuphea seeds. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2015; 84:1021-33. [PMID: 26505880 DOI: 10.1111/tpj.13063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 10/14/2015] [Accepted: 10/20/2015] [Indexed: 05/04/2023]
Abstract
Lysophosphatidic acid acyltransferase (LPAT) catalyzes acylation of the sn-2 position on lysophosphatidic acid by an acyl CoA substrate to produce the phosphatidic acid precursor of polar glycerolipids and triacylglycerols (TAGs). In the case of TAGs, this reaction is typically catalyzed by an LPAT2 from microsomal LPAT class A that has high specificity for C18 fatty acids containing Δ9 unsaturation. Because of this specificity, the occurrence of saturated fatty acids in the TAG sn-2 position is infrequent in seed oils. To identify LPATs with variant substrate specificities, deep transcriptomic mining was performed on seeds of two Cuphea species producing TAGs that are highly enriched in saturated C8 and C10 fatty acids. From these analyses, cDNAs for seven previously unreported LPATs were identified, including cDNAs from Cuphea viscosissima (CvLPAT2) and Cuphea avigera var. pulcherrima (CpuLPAT2a) encoding microsomal, seed-specific class A LPAT2s and a cDNA from C. avigera var. pulcherrima (CpuLPATB) encoding a microsomal, seed-specific LPAT from the bacterial-type class B. The activities of these enzymes were characterized in Camelina sativa by seed-specific co-expression with cDNAs for various Cuphea FatB acyl-acyl carrier protein thioesterases (FatB) that produce a variety of saturated medium-chain fatty acids. CvLPAT2 and CpuLPAT2a expression resulted in accumulation of 10:0 fatty acids in the Camelina sativa TAG sn-2 position, indicating a 10:0 CoA specificity that has not been previously described for plant LPATs. CpuLPATB expression generated TAGs with 14:0 at the sn-2 position, but not 10:0. Identification of these LPATs provides tools for understanding the structural basis of LPAT substrate specificity and for generating altered oil functionalities.
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Affiliation(s)
- Hae Jin Kim
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Jillian E Silva
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Umidjon Iskandarov
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Mariette Andersson
- Department of Plant Breeding Swedish, University of Agricultural Sciences, Alnarp, Sweden
| | - Rebecca E Cahoon
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Keithanne Mockaitis
- Pervasive Technology Institute and Department of Biology, Indiana University, Bloomington, IN, 47405, USA
| | - Edgar B Cahoon
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
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Kim HJ, Silva JE, Vu HS, Mockaitis K, Nam JW, Cahoon EB. Toward production of jet fuel functionality in oilseeds: identification of FatB acyl-acyl carrier protein thioesterases and evaluation of combinatorial expression strategies in Camelina seeds. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:4251-65. [PMID: 25969557 PMCID: PMC4493788 DOI: 10.1093/jxb/erv225] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Seeds of members of the genus Cuphea accumulate medium-chain fatty acids (MCFAs; 8:0-14:0). MCFA- and palmitic acid- (16:0) rich vegetable oils have received attention for jet fuel production, given their similarity in chain length to Jet A fuel hydrocarbons. Studies were conducted to test genes, including those from Cuphea, for their ability to confer jet fuel-type fatty acid accumulation in seed oil of the emerging biofuel crop Camelina sativa. Transcriptomes from Cuphea viscosissima and Cuphea pulcherrima developing seeds that accumulate >90% of C8 and C10 fatty acids revealed three FatB cDNAs (CpuFatB3, CvFatB1, and CpuFatB4) expressed predominantly in seeds and structurally divergent from typical FatB thioesterases that release 16:0 from acyl carrier protein (ACP). Expression of CpuFatB3 and CvFatB1 resulted in Camelina oil with capric acid (10:0), and CpuFatB4 expression conferred myristic acid (14:0) production and increased 16:0. Co-expression of combinations of previously characterized Cuphea and California bay FatBs produced Camelina oils with mixtures of C8-C16 fatty acids, but amounts of each fatty acid were less than obtained by expression of individual FatB cDNAs. Increases in lauric acid (12:0) and 14:0, but not 10:0, in Camelina oil and at the sn-2 position of triacylglycerols resulted from inclusion of a coconut lysophosphatidic acid acyltransferase specialized for MCFAs. RNA interference (RNAi) suppression of Camelina β-ketoacyl-ACP synthase II, however, reduced 12:0 in seeds expressing a 12:0-ACP-specific FatB. Camelina lines presented here provide platforms for additional metabolic engineering targeting fatty acid synthase and specialized acyltransferases for achieving oils with high levels of jet fuel-type fatty acids.
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Affiliation(s)
- Hae Jin Kim
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Jillian E Silva
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Hieu Sy Vu
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Keithanne Mockaitis
- Department of Biology, and Center for Genomics and Bioinformatics, Indiana University, Bloomington, IN 47405, USA
| | - Jeong-Won Nam
- Donald Danforth Plant Science Center, Saint Louis, MO 63132, USA
| | - Edgar B Cahoon
- Department of Biochemistry and Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
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Cloning, characterization, and expression analysis of acyl–acyl carrier protein (ACP)-thioesterase B from seeds of Chinese Spicehush (Lindera communis). Gene 2014; 542:16-22. [DOI: 10.1016/j.gene.2014.03.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 03/09/2014] [Accepted: 03/12/2014] [Indexed: 01/19/2023]
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Moreno-Pérez AJ, Venegas-Calerón M, Vaistij FE, Salas JJ, Larson TR, Garcés R, Graham IA, Martínez-Force E. Effect of a mutagenized acyl-ACP thioesterase FATA allele from sunflower with improved activity in tobacco leaves and Arabidopsis seeds. PLANTA 2014; 239:667-77. [PMID: 24327259 DOI: 10.1007/s00425-013-2003-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 11/25/2013] [Indexed: 05/26/2023]
Abstract
The substrate specificity of the acyl-acyl carrier protein (ACP) thioesterases significantly determines the type of fatty acids that are exported from plastids. Thus, designing acyl-ACP thioesterases with different substrate specificities or kinetic properties would be of interest for plant lipid biotechnology to produce oils enriched in specialty fatty acids. In the present work, the FatA thioesterase from Helianthus annuus was used to test the impact of changes in the amino acids present in the binding pocket on substrate specificity and catalytic efficiency. Amongst all the mutated enzymes studied, Q215W was especially interesting as it had higher specificity towards saturated acyl-ACP substrates and higher catalytic efficiency compared to wild-type H. annuus FatA. Null, wild type and high-efficiency alleles were transiently expressed in tobacco leaves to check their effect on lipid biosynthesis. Expression of active FatA thioesterases altered the composition of leaf triacylglycerols but did not alter total lipid content. However, the expression of the wild type and the high-efficiency alleles in Arabidopsis thaliana transgenic seeds resulted in a strong reduction in oil content and an increase in total saturated fatty acid content. The role and influence of acyl-ACP thioesterases in plant metabolism and their possible applications in lipid biotechnology are discussed.
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