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Bai M, Jiang S, Chu S, Yu Y, Shan D, Liu C, Zong L, Liu Q, Liu N, Xu W, Mei Z, Jian J, Zhang C, Zhao S, Chiu TY, Simonsen HT. The telomere-to-telomere (T2T) genome of Peucedanum praeruptorum Dunn provides insights into the genome evolution and coumarin biosynthesis. Gigascience 2024; 13:giae025. [PMID: 38837945 DOI: 10.1093/gigascience/giae025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/23/2024] [Accepted: 05/01/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND Traditional Chinese medicine has used Peucedanum praeruptorum Dunn (Apiaceae) for a long time. Various coumarins, including the significant constituents praeruptorin (A-E), are the active constituents in the dried roots of P. praeruptorum. Previous transcriptomic and metabolomic studies have attempted to elucidate the distribution and biosynthetic network of these medicinal-valuable compounds. However, the lack of a high-quality reference genome impedes an in-depth understanding of genetic traits and thus the development of better breeding strategies. RESULTS A telomere-to-telomere (T2T) genome was assembled for P. praeruptorum by combining PacBio HiFi, ONT ultra-long, and Hi-C data. The final genome assembly was approximately 1.798 Gb, assigned to 11 chromosomes with genome completeness >98%. Comparative genomic analysis suggested that P. praeruptorum experienced 2 whole-genome duplication events. By the transcriptomic and metabolomic analysis of the coumarin metabolic pathway, we presented coumarins' spatial and temporal distribution and the expression patterns of critical genes for its biosynthesis. Notably, the COSY and cytochrome P450 genes showed tandem duplications on several chromosomes, which may be responsible for the high accumulation of coumarins. CONCLUSIONS A T2T genome for P. praeruptorum was obtained, providing molecular insights into the chromosomal distribution of the coumarin biosynthetic genes. This high-quality genome is an essential resource for designing engineering strategies for improving the production of these valuable compounds.
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Affiliation(s)
- Mingzhou Bai
- DTU Bioengineering, Technical University of Denmark, Kongens Lyngby 2800, Denmark
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Sanjie Jiang
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Shanshan Chu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230000, China
- Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Hefei 230000, China
| | - Yangyang Yu
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Dai Shan
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Chun Liu
- College of Tropical Crops, Hainan University, Haikou 570228, China
| | - Liang Zong
- Wuhan BGI Technology Service Co., Ltd. BGI-Wuhan, Wuhan 430000, China
| | - Qun Liu
- Wuhan BGI Technology Service Co., Ltd. BGI-Wuhan, Wuhan 430000, China
| | - Nana Liu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310000, China
- HIM-BGI Omics Center, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences (CAS), Hangzhou 310000, China
| | - Weisong Xu
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Zhanlong Mei
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Jianbo Jian
- DTU Bioengineering, Technical University of Denmark, Kongens Lyngby 2800, Denmark
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Chi Zhang
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Shancen Zhao
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
| | - Tsan-Yu Chiu
- BGI-Genomics, BGI-Shenzhen, Shenzhen 518000, China
- HIM-BGI Omics Center, Zhejiang Cancer Hospital, Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences (CAS), Hangzhou 310000, China
| | - Henrik Toft Simonsen
- Laboratoire Biotechnologies Végétales Plantes aromatiques et médicinales, Université Jean Monnet, St. Étienne 42023, France
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2
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Cao Y, Chen Y, Zhang L, Cai Y. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) involved in lignin accumulation in pear fruits. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:791-798. [PMID: 37520811 PMCID: PMC10382451 DOI: 10.1007/s12298-023-01329-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/29/2023] [Accepted: 06/15/2023] [Indexed: 08/01/2023]
Abstract
One of the most important factors impacting the quality of pear fruit is the presence of stone cells and lignin. Lignin is the main component of stone cells in pear fruits. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) are involved in lignin accumulation in pear fruits. However, the functions of these genes in lignin biosynthesis were excluded in pear. In our study, we isolated and cloned Pb4CL11 (GenBank: KM455955.1) and PbC3H1 (GenBank: KM373790.1) from pear, which contained 1644 bp encoded 54 amino acids (AA), and 1539 bp encoded 513 AA, respectively. The expression of Pb4CL11 and PbC3H1 in Arabidopsis thaliana led to an increase in cell wall thickness for intervascular fibers and xylem cells and lignin content. Overexpression of Pb4CL11 and PbC3H1 in A. thaliana can significantly increase the expression of AtPAL, AtC4H, AtHCT, AtC3H, AtCCOMT, AtCCR, AtF5H, AtCOMT, AtCAD4 and AtCAD5 with promotion of lignin biosynthesis. Taken together, our study's findings not only demonstrated the probable function of Pb4CL11 and PbC3H1 in lignin biosynthesis but also laid the groundwork for future studies using molecular biological methods to control lignin production and the formation of stone cells in pear fruits.
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Affiliation(s)
- Yunpeng Cao
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- School of Health and Nursing, Wuchang University of Technology, Wuhan, China
| | - Yu Chen
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui Zhifei Longcom Biopharmaceutical Co., Ltd., Hefei, China
| | - Lin Zhang
- School of Health and Nursing, Wuchang University of Technology, Wuhan, China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, China
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Miranda S, Lagrèze J, Knoll AS, Angeli A, Espley RV, Dare AP, Malnoy M, Martens S. De novo transcriptome assembly and functional analysis reveal a dihydrochalcone 3-hydroxylase(DHC3H) of wild Malus species that produces sieboldin in vivo. FRONTIERS IN PLANT SCIENCE 2022; 13:1072765. [PMID: 36589107 PMCID: PMC9800874 DOI: 10.3389/fpls.2022.1072765] [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: 10/17/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Sieboldin is a specialised secondary metabolite of the group of dihydrochalcones (DHC), found in high concentrations only in some wild Malus species, closely related to the domesticated apple (Malus × domestica L.). To date, the first committed step towards the biosynthesis of sieboldin remains unknown. In this study, we combined transcriptomic analysis and a de novo transcriptome assembly to identify two putative 3-hydroxylases in two wild Malus species (Malus toringo (K. Koch) Carriere syn. sieboldii Rehder, Malus micromalus Makino) whose DHC profile is dominated by sieboldin. We assessed the in vivo activity of putative candidates to produce 3-hydroxyphloretin and sieboldin by de novo production in Saccharomyces cerevisiae. We found that CYP98A proteins of wild Malus accessions (CYP98A195, M. toringo and CYP98A196, M. micromalus) were able to produce 3-hydroxyphloretin, ultimately leading to sieboldin accumulation by co-expression with PGT2. CYP98A197-198 genes of M. × domestica, however, were unable to hydroxylate phloretin in vivo. CYP98A195-196 proteins exerting 3-hydroxylase activity co-localised with an endoplasmic reticulum marker. CYP98A protein model from wild accessions showed mutations in key residues close to the ligand pocket predicted using phloretin for protein docking modelling. These mutations are located within known substrate recognition sites of cytochrome P450s, which could explain the acceptance of phloretin in CYP98A protein of wild accessions. Screening a Malus germplasm collection by HRM marker analysis for CYP98A genes identified three clusters that correspond to the alleles of domesticated and wild species. Moreover, CYP98A isoforms identified in M. toringo and M. micromalus correlate with the accumulation of sieboldin in other wild and hybrid Malus genotypes. Taken together, we provide the first evidence of an enzyme producing sieboldin in vivo that could be involved in the key hydroxylation step towards the synthesis of sieboldin in Malus species.
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Affiliation(s)
- Simón Miranda
- Research and Innovation Center, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
- Center Agriculture Food and Environment (C3A), University of Trento, Trento, Italy
- The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Jorge Lagrèze
- Research and Innovation Center, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
- Center Agriculture Food and Environment (C3A), University of Trento, Trento, Italy
| | - Anne-Sophie Knoll
- Research and Innovation Center, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
| | - Andrea Angeli
- Research and Innovation Center, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
| | - Richard V. Espley
- The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Andrew P. Dare
- The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Mickael Malnoy
- Research and Innovation Center, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
| | - Stefan Martens
- Research and Innovation Center, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
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Ma Q, Xu J, Feng Y, Wu X, Lu X, Zhang P. Knockdown of p-Coumaroyl Shikimate/Quinate 3′-Hydroxylase Delays the Occurrence of Post-Harvest Physiological Deterioration in Cassava Storage Roots. Int J Mol Sci 2022; 23:ijms23169231. [PMID: 36012496 PMCID: PMC9409078 DOI: 10.3390/ijms23169231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022] Open
Abstract
Cassava storage roots are an important source of food, feed, and material for starch-based industries in many countries. After harvest, rapid post-harvest physiological deterioration (PPD) reduces their palatability and marketability. During the PPD process, vascular streaking occurs through over-accumulation of coumarins, the biosynthesis of which involves the key enzyme p-coumaroyl shikimate/quinate 3′-hydroxylase (C3′H). Repression of MeC3′H expression by RNA interference in transgenic cassava plants caused a significant delay in PPD by decreasing scopoletin and scopolin accumulation in field-harvested storage roots. This study demonstrates that MeC3′H is the key enzyme participating in coumarin biosynthesis during PPD and shows that MeC3′H is a useful target gene for editing to prolong the shelf life of cassava storage roots.
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Affiliation(s)
- Qiuxiang Ma
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jia Xu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yancai Feng
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoyun Wu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xinlu Lu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence:
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Comparative Analysis of Various Plant-Growth-Regulator Treatments on Biomass Accumulation, Bioactive Phytochemical Production, and Biological Activity of Solanum virginianum L. Callus Culture Extracts. COSMETICS 2022. [DOI: 10.3390/cosmetics9040071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Solanum virginianum L. (Solanum xanthocarpum) is an important therapeutic plant due to the presence of medicinally useful plant-derived compounds. S. virginianum has been shown to have anticancer, antioxidant, antibacterial, antiaging, and anti-inflammatory properties. This plant is becoming endangered due to overexploitation and the loss of its native habitat. The purpose of this research is to develop an ideal technique for the maximum biomass and phytochemical accumulation in S. virginianum leaf-induced in vitro cultures, as well as to evaluate their potential antiaging, anti-inflammatory, and antioxidant abilities. Leaf explants were grown on media (Murashige and Skoog (MS)) that were supplemented with various concentrations and combinations of plant hormones (TDZ, BAP, NAA, and TDZ + NAA) for this purpose. When compared with the other hormones, TDZ demonstrated the best response for callus induction, biomass accumulation, phytochemical synthesis, and biological activities. However, with 5 mg/L of TDZ, the optimal biomass production (FW: 251.48 g/L and DW: 13.59 g/L) was estimated. The highest total phenolic level (10.22 ± 0.44 mg/g DW) was found in 5 mg/L of TDZ, whereas the highest flavonoid contents (1.65 ± 0.11 mg/g DW) were found in 10 mg/L of TDZ. The results of the HPLC revealed that the highest production of coumarins (scopoletin: 4.34 ± 0.20 mg/g DW and esculetin: 0.87 ± 0.040 mg/g DW) was determined for 10 mg/L of TDZ, whereas the highest accumulations of caffeic acid (0.56 ± 0.021 mg/g DW) and methyl caffeate (18.62 ± 0.60 mg/g DW) were shown by 5 mg/L of TDZ. The determination of these phytochemicals (phenolics and coumarins) estimates that the results of our study on biological assays, such as antioxidant, anti-inflammatory, and antiaging assays, are useful for future cosmetic applications.
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6
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Antika LD, Tasfiyati AN, Hikmat H, Septama AW. Scopoletin: a review of its source, biosynthesis, methods of extraction, and pharmacological activities. Z NATURFORSCH C 2022; 77:303-316. [PMID: 35218175 DOI: 10.1515/znc-2021-0193] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 01/22/2022] [Indexed: 12/24/2022]
Abstract
Scopoletin, also known as 6-methoxy-7 hydroxycoumarin, is one of the naturally occurring coumarin commonly found in many edible plants and plays an important role in human health. Despite the various potential pharmacological properties, the biosynthesis process, method of extraction, and mechanism of action on this compound have not been documented well. In this current review, the biosynthesis pathway, distribution of scopoletin in the plant kingdom, and extraction techniques are elaborated. The in vitro, in vivo, and in silico pharmacological studies are also discussed on antioxidant, antimicrobial, anticancer, anti-inflammation, and neuroprotective aspects of scopoletin. This study may help to understand the benefit of scopoletin containing plants and would be beneficial for the prevention and treatment of diseases.
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Affiliation(s)
- Lucia Dwi Antika
- Research Center for Chemistry, National Research and Innovation Agency of Indonesia, PUSPIPTEK Area Serpong, Tangerang Selatan, Banten 15314, Indonesia
| | - Aprilia Nur Tasfiyati
- Research Center for Chemistry, National Research and Innovation Agency of Indonesia, PUSPIPTEK Area Serpong, Tangerang Selatan, Banten 15314, Indonesia
| | - Hikmat Hikmat
- Research Center for Chemistry, National Research and Innovation Agency of Indonesia, PUSPIPTEK Area Serpong, Tangerang Selatan, Banten 15314, Indonesia
| | - Abdi Wira Septama
- Research Center for Chemistry, National Research and Innovation Agency of Indonesia, PUSPIPTEK Area Serpong, Tangerang Selatan, Banten 15314, Indonesia
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7
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Wang H, Guo H, Wang N, Huo YX. Toward the Heterologous Biosynthesis of Plant Natural Products: Gene Discovery and Characterization. ACS Synth Biol 2021; 10:2784-2795. [PMID: 34757715 DOI: 10.1021/acssynbio.1c00315] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Plant natural products (PNPs) represent a vast and diverse group of natural products, which have wide applications such as emulsifiers in cosmetics, sweeteners in foods, and active ingredients in medicines. Large-scale production of certain PNPs (e.g., artemisinin, taxol) has been implemented by reconstruction of biosynthetic pathways in heterologous hosts. However, unknown biosynthetic pathways greatly restrict wide applications of heterologous production of PNPs of interest. With the rapid development of sequencing and multiomics analysis technologies, huge amounts of omics data, i.e., genomics, transcriptomics, and proteomics, have been deposited in public databases, which is a precious resource for identification of the unknown biosynthetic pathway of PNPs. Herein, we have enumerated the approaches which have been widely used to screen candidate genes involved in the biosynthesis of PNPs of interest. We also discuss recent developments in the characterization of putative genes and elucidation of the complete biosynthetic pathway in heterologous hosts.
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Affiliation(s)
- Huiyan Wang
- School of Life Science, Beijing Institute of Technology, No. 5 South Zhongguancun Street, 100081 Beijing, China
| | - Hao Guo
- School of Life Science, Beijing Institute of Technology, No. 5 South Zhongguancun Street, 100081 Beijing, China
| | - Ning Wang
- School of Life Science, Beijing Institute of Technology, No. 5 South Zhongguancun Street, 100081 Beijing, China
| | - Yi-Xin Huo
- School of Life Science, Beijing Institute of Technology, No. 5 South Zhongguancun Street, 100081 Beijing, China
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
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8
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Guo P, Pang W, Zhao X, Chen X, Zhang Y, Zhao Q, Jiao B. A rapid UPLC-QqQ-MS/MS method for targeted screening and quantitative analysis of secondary metabolites in satsuma mandarin. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03742-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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9
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Usman H, Ullah MA, Jan H, Siddiquah A, Drouet S, Anjum S, Giglioli-Guviarc’h N, Hano C, Abbasi BH. Interactive Effects of Wide-Spectrum Monochromatic Lights on Phytochemical Production, Antioxidant and Biological Activities of Solanum xanthocarpum Callus Cultures. Molecules 2020; 25:E2201. [PMID: 32397194 PMCID: PMC7248882 DOI: 10.3390/molecules25092201] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 02/06/2023] Open
Abstract
Solanum xanthocarpum is considered an important traditional medicinal herb because of its unique antioxidant, and anti-diabetic, anti-aging, and anti-inflammatory potential. Because of the over exploitation linked to its medicinal properties as well as destruction of its natural habitat, S. xanthocarpum is now becoming endangered and its supply is limited. Plant in vitro culture and elicitation are attractive alternative strategies to produce biomass and stimulate biosynthesis of medicinally important phytochemicals. Here, we investigated the potential influence of seven different monochromatic light treatments on biomass and secondary metabolites accumulation in callus culture of S. xanthocarpum as well as associated biological activities of the corresponding extracts. Among different light treatments, highest biomass accumulation was observed in white light-treated callus culture. Optimum accumulation of total flavonoid contents (TFC) and total phenolic contents (TPC) were observed in callus culture kept under continuous white and blue light respectively than control. Quantification of phytochemicals through HPLC revealed that optimum production of caffeic acid (0.57 ± 0.06 mg/g DW), methyl-caffeate (17.19 mg/g ± 1.79 DW), scopoletin (2.28 ± 0.13 mg/g DW), and esculetin (0.68 ± 0.07 mg/g DW) was observed under blue light callus cultures. Compared to the classic photoperiod condition, caffeic acid, methyl-caffeate, scopoletin, and esculetin were accumulated 1.7, 2.5, 1.1, and 1.09-folds higher, respectively. Moreover, high in vitro cell free antioxidant, anti-diabetic, anti-aging, and anti-inflammatory activities were closely associated with the production of these secondary metabolites. These results clearly showed the interest to apply multispectral light as elicitor of in vitro callus cultures S. xanthocarpum to promote the production of important phytochemicals, and allow us to propose this system as an alternative for the collection of this endangered species from the wild.
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Affiliation(s)
- Hazrat Usman
- Department of Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan; (H.U.); (M.A.U.); (H.J.); (A.S.)
| | - Muhammad Asad Ullah
- Department of Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan; (H.U.); (M.A.U.); (H.J.); (A.S.)
| | - Hasnain Jan
- Department of Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan; (H.U.); (M.A.U.); (H.J.); (A.S.)
| | - Aisha Siddiquah
- Department of Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan; (H.U.); (M.A.U.); (H.J.); (A.S.)
| | - Samantha Drouet
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA USC1328 Unversité ď, CEDEX 2, 45067 Orléans, France;
- COSMACTIFS, Bioactifs et Cosmétiques, CNRS GDR3711, CEDEX 2, 4506 Orléans, France
| | - Sumaira Anjum
- Department of Biotechnology, Kinnaird College for Women, Lahore 54000, Pakistan;
| | | | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA USC1328 Unversité ď, CEDEX 2, 45067 Orléans, France;
- COSMACTIFS, Bioactifs et Cosmétiques, CNRS GDR3711, CEDEX 2, 4506 Orléans, France
| | - Bilal Haider Abbasi
- Department of Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan; (H.U.); (M.A.U.); (H.J.); (A.S.)
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10
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Vanholme R, Sundin L, Seetso KC, Kim H, Liu X, Li J, De Meester B, Hoengenaert L, Goeminne G, Morreel K, Haustraete J, Tsai HH, Schmidt W, Vanholme B, Ralph J, Boerjan W. COSY catalyses trans-cis isomerization and lactonization in the biosynthesis of coumarins. NATURE PLANTS 2019; 5:1066-1075. [PMID: 31501530 DOI: 10.1038/s41477-019-0510-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 07/30/2019] [Indexed: 05/23/2023]
Abstract
Coumarins, also known as 1,2-benzopyrones, comprise a large class of secondary metabolites that are ubiquitously found throughout the plant kingdom. In many plant species, coumarins are particularly important for iron acquisition and plant defence. Here, we show that COUMARIN SYNTHASE (COSY) is a key enzyme in the biosynthesis of coumarins. Arabidopsis thaliana cosy mutants have strongly reduced levels of coumarin and accumulate o-hydroxyphenylpropanoids instead. Accordingly, cosy mutants have reduced iron content and show growth defects when grown under conditions in which there is a limited availability of iron. Recombinant COSY is able to produce umbelliferone, esculetin and scopoletin from their respective o-hydroxycinnamoyl-CoA thioesters by two reaction steps-a trans-cis isomerization followed by a lactonization. This conversion happens partially spontaneously and is catalysed by light, which explains why the need for an enzyme for this conversion has been overlooked. The combined results show that COSY has an essential function in the biosynthesis of coumarins in organs that are shielded from light, such as roots. These findings provide routes to improving coumarin production in crops or by microbial fermentation.
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Affiliation(s)
- Ruben Vanholme
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Lisa Sundin
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Keletso Carol Seetso
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Hoon Kim
- Department of Biochemistry and the DOE Great Lakes Bioenergy Research Center, the Wisconsin Energy Institute, University of Wisconsin, Madison, WI, USA
| | - Xinyu Liu
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Jin Li
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Barbara De Meester
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Lennart Hoengenaert
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Geert Goeminne
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
- Metabolomics Core, VIB, Ghent, Belgium
| | - Kris Morreel
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Jurgen Haustraete
- Protein Core, VIB-UGent Center for Inflammation Research, VIB, Ghent University, Ghent, Belgium
| | - Huei-Hsuan Tsai
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
- Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung Hsing University and Academia Sinica, Taipei, Taiwan
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Wolfgang Schmidt
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
- Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung Hsing University and Academia Sinica, Taipei, Taiwan
- Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Genome and Systems Biology Degree Program, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Bartel Vanholme
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - John Ralph
- Department of Biochemistry and the DOE Great Lakes Bioenergy Research Center, the Wisconsin Energy Institute, University of Wisconsin, Madison, WI, USA
| | - Wout Boerjan
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium.
- Center for Plant Systems Biology, VIB, Ghent, Belgium.
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11
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Zhao L, Wang D, Liu J, Yu X, Wang R, Wei Y, Wen C, Ouyang Z. Transcriptomic analysis of key genes involved in chlorogenic acid biosynthetic pathway and characterization of MaHCT from Morus alba L. Protein Expr Purif 2018; 156:25-35. [PMID: 30597215 DOI: 10.1016/j.pep.2018.12.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 12/27/2018] [Accepted: 12/27/2018] [Indexed: 12/27/2022]
Abstract
Mulberry leaves (Morus alba L.) are of high medicinal value in traditional Chinese medicine with chlorogenic acid (CGA) as its major biologically active constituent. Mulberry leaves require that they be harvested after frost; previous studies have shown CGA accumulation significantly increased after frost. However, the molecular mechanism of how frost changes the CGA content in mulberry leaves is unclear. Additionally, the mechanism of CGA biosynthesis and key genes in mulberry leaves are not well-understood. In this study, transcriptome sequencing was performed on two mulberry leaf samples with different CGA contents (before and after frost). Fifty-eight genes were annotated in the CGA biosynthetic pathway. Compared to those in pre-frost mulberry leaves, 12 and 5 genes were upregulated and downregulated, respectively, in post-frost leaves. Correlation analysis showed that the expression levels of four genes were significantly positively correlated with CGA content, including those encoding phenylalanine ammonia-lyase, 4-coumarate-CoA ligase, hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyltransferase (HCT), and coumaroyl quinate/shikimate 3'-hydroxylase, and may be key genes in the CGA biosynthetic pathway. We cloned MaHCT4 (GenBank accession no. MH476577) from mulberry leaves. Multiple sequence alignment suggested that MaHCT4 contains the conserved domains HXXXD and DFGWG. Enzymatic assays indicated that MaHCT4 catalyzes the formation of p-coumaroyl shikimic acid, p-coumaroyl quinic acid, and CGA. The Km values of quinic acid and shikimic acid were 10 ± 1.0 and 31 ± 1.7 μM, respectively, suggesting that MaHCT4 favored quinic acid over shikimic acid as its acyl acceptor. Using quinic acid as an acyl acceptor, MaHCT4 showed a preference for p-coumaroyl-CoA over caffeoyl-CoA. Our results provide insight into the molecular mechanism of how frost alters the CGA content and roles of key genes involved in the CGA biosynthetic pathway in mulberry leaves.
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Affiliation(s)
- Li Zhao
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Dujun Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Jia Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Xiaofeng Yu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Rongye Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Yuan Wei
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Chongwei Wen
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Zhen Ouyang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China.
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12
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Jiang Y, Huang M, Wisniewski M, Li H, Zhang M, Tao X, Liu Y, Zou Y. Transcriptome Analysis Provides Insights into Gingerol Biosynthesis in Ginger ( Zingiber officinale). THE PLANT GENOME 2018; 11. [PMID: 30512040 DOI: 10.3835/plantgenome2018.06.0034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 08/20/2018] [Indexed: 05/18/2023]
Abstract
Ginger ( Roscoe), a perennial herb, is one of the most economically valuable plants in the Zingiberaceae family. Gingerol, as the major constituents of ginger essential oil, contributes to the unique flavor and pharmaceutical value of ginger. However, the pathway of gingerol biosynthesis has not been verified and described in ginger to help understand the biosynthesis of secondary metabolites in nonmodel species. In this study, the concentrations of gingerols were quantified at different stages of rhizome development and in different tissues. The results confirmed that rhizomes are the major source of gingerols and that accumulation of gingerols in the rhizome starts at an early developmental stage. We also assembled a reference ginger transcriptome, which is composed of 219,479 unigenes consisting of 330,568 transcripts and provides a high-quality genetic resource for further research. An analysis of differentially expressed genes (DEGs) identified 12,935 DEGs among several different comparisons. Five genes [ (), (), p (), O (), and ()] associated with gingerol biosynthesis were identified as being significantly differentially expressed in the rhizome at an early developmental stage and all five genes were upregulated. Expression analysis revealed that different loci of these genes have become functionally specialized in different tissues and different developmental stages of the rhizome (subfunctionalization). Among the DEGs, and may act as gatekeepers and rate-limiting enzymes in the gingerol biosynthesis pathway and thus play an important role in regulating the biosynthesis of gingerol.
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13
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Deng Y, Zheng H, Yan Z, Liao D, Li C, Zhou J, Liao H. Full-Length Transcriptome Survey and Expression Analysis of Cassia obtusifolia to Discover Putative Genes Related to Aurantio-Obtusin Biosynthesis, Seed Formation and Development, and Stress Response. Int J Mol Sci 2018; 19:ijms19092476. [PMID: 30134624 PMCID: PMC6163539 DOI: 10.3390/ijms19092476] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/09/2018] [Accepted: 08/13/2018] [Indexed: 12/23/2022] Open
Abstract
The seed is the pharmaceutical and breeding organ of Cassia obtusifolia, a well-known medical herb containing aurantio-obtusin (a kind of anthraquinone), food, and landscape. In order to understand the molecular mechanism of the biosynthesis of aurantio-obtusin, seed formation and development, and stress response of C. obtusifolia, it is necessary to understand the genomics information. Although previous seed transcriptome of C. obtusifolia has been carried out by short-read next-generation sequencing (NGS) technology, the vast majority of the resulting unigenes did not represent full-length cDNA sequences and supply enough gene expression profile information of the various organs or tissues. In this study, fifteen cDNA libraries, which were constructed from the seed, root, stem, leaf, and flower (three repetitions with each organ) of C. obtusifolia, were sequenced using hybrid approach combining single-molecule real-time (SMRT) and NGS platform. More than 4,315,774 long reads with 9.66 Gb sequencing data and 361,427,021 short reads with 108.13 Gb sequencing data were generated by SMRT and NGS platform, respectively. 67,222 consensus isoforms were clustered from the reads and 81.73% (61,016) of which were longer than 1000 bp. Furthermore, the 67,222 consensus isoforms represented 58,106 nonredundant transcripts, 98.25% (57,092) of which were annotated and 25,573 of which were assigned to specific metabolic pathways by KEGG. CoDXS and CoDXR genes were directly used for functional characterization to validate the accuracy of sequences obtained from transcriptome. A total of 658 seed-specific transcripts indicated their special roles in physiological processes in seed. Analysis of transcripts which were involved in the early stage of anthraquinone biosynthesis suggested that the aurantio-obtusin in C. obtusifolia was mainly generated from isochorismate and Mevalonate/methylerythritol phosphate (MVA/MEP) pathway, and three reactions catalyzed by Menaquinone-specific isochorismate synthase (ICS), 1-deoxy-d-xylulose-5-phosphate synthase (DXS) and isopentenyl diphosphate (IPPS) might be the limited steps. Several seed-specific CYPs, SAM-dependent methyltransferase, and UDP-glycosyltransferase (UDPG) supplied promising candidate genes in the late stage of anthraquinone biosynthesis. In addition, four seed-specific transcriptional factors including three MYB Transcription Factor (MYB) and one MADS-box Transcription Factor (MADS) transcriptional factors) and alternative splicing might be involved with seed formation and development. Meanwhile, most members of Hsp20 genes showed high expression level in seed and flower; seven of which might have chaperon activities under various abiotic stresses. Finally, the expressional patterns of genes with particular interests showed similar trends in both transcriptome assay and qRT-PCR. In conclusion, this is the first full-length transcriptome sequencing reported in Caesalpiniaceae family, and thus providing a more complete insight into aurantio-obtusin biosynthesis, seed formation and development, and stress response as well in C. obtusifolia.
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Affiliation(s)
- Yin Deng
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Hui Zheng
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Zicheng Yan
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Dongying Liao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Chaolin Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Jiayu Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Hai Liao
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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14
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Li GJ, Wu HJ, Wang Y, Hung WL, Rouseff RL. Determination of citrus juice coumarins, furanocoumarins and methoxylated flavones using solid phase extraction and HPLC with photodiode array and fluorescence detection. Food Chem 2018; 271:29-38. [PMID: 30236679 DOI: 10.1016/j.foodchem.2018.07.130] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 07/12/2018] [Accepted: 07/18/2018] [Indexed: 01/23/2023]
Abstract
A synergistic combination of analytical techniques was developed for the simultaneous determination of the three most biologically active chemical families in citrus juices: methoxylated flavones, coumarins, and furanocoumarins. No rapid methodology has been available to determine them together. A solid phase extraction concentrated these groups and a ternary reverse phase HPLC gradient completely resolved them from other juice components. Two coumarins, isomeranzin and osthole, were identified in a sweet orange (C. sinensis) cultivar, Changyecheng, for the first time. Pummelo juice was characterized by coumarin and furanocoumarin epoxides such as meranzin and epoxybergamottin. No epoxides were observed in the more acidic juices. Added furanocoumarin epoxides hydrolyzed rapidly in the most acidic juices. The ratios of the UV peak areas at 320 nm to the fluorescence emission peaks as well as the ratio of fluorescence emission peaks at 450-400 nm could be used to identify chromatographic peaks.
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Affiliation(s)
- Gui-Jie Li
- College of Food Science, Southwest University, Chongqing, China; Citrus Research Institute, Southwest University, Chongqing, China; Chongqing Collaborative Innovation Center for Functional Food, Chongqing University of Education, Chongqing, China.
| | - Hou-Jiu Wu
- Citrus Research Institute, Southwest University, Chongqing, China.
| | - Yu Wang
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, USA.
| | - Wei-Lun Hung
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, USA.
| | - Russell L Rouseff
- College of Food Science, Southwest University, Chongqing, China; Citrus Research Institute, Southwest University, Chongqing, China.
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15
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Siwinska J, Siatkowska K, Olry A, Grosjean J, Hehn A, Bourgaud F, Meharg AA, Carey M, Lojkowska E, Ihnatowicz A. Scopoletin 8-hydroxylase: a novel enzyme involved in coumarin biosynthesis and iron-deficiency responses in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:1735-1748. [PMID: 29361149 PMCID: PMC5888981 DOI: 10.1093/jxb/ery005] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 01/12/2018] [Indexed: 05/06/2023]
Abstract
Iron deficiency is a serious agricultural problem, particularly in alkaline soils. Secretion of coumarins by Arabidopsis thaliana roots is induced under iron deficiency. An essential enzyme for the biosynthesis of the major Arabidopsis coumarins, scopoletin and its derivatives, is Feruloyl-CoA 6'-Hydroxylase1 (F6'H1), which belongs to a large enzyme family of the 2-oxoglutarate and Fe2+-dependent dioxygenases. We have functionally characterized another enzyme of this family, which is a close homologue of F6'H1 and is encoded by a strongly iron-responsive gene, At3g12900. We purified At3g12900 protein heterologously expressed in Escherichia coli and demonstrated that it is involved in the conversion of scopoletin into fraxetin, via hydroxylation at the C8 position, and that it thus functions as a scopoletin 8-hydroxylase (S8H). Its function in plant cells was confirmed by the transient expression of S8H protein in Nicotiana benthamiana leaves, followed by metabolite profiling and biochemical and ionomic characterization of Arabidopsis s8h knockout lines grown under various iron regimes. Our results indicate that S8H is involved in coumarin biosynthesis, as part of mechanisms used by plants to assimilate iron.
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Affiliation(s)
- Joanna Siwinska
- Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Abrahama, Gdansk, Poland
| | - Kinga Siatkowska
- Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Abrahama, Gdansk, Poland
| | - Alexandre Olry
- Université de Lorraine, INRA, UMR 1121 Laboratoire Agronomie et Environnement Nancy-Colmar, Vandœuvre-lès-Nancy, France
| | - Jeremy Grosjean
- Université de Lorraine, INRA, UMR 1121 Laboratoire Agronomie et Environnement Nancy-Colmar, Vandœuvre-lès-Nancy, France
| | - Alain Hehn
- Université de Lorraine, INRA, UMR 1121 Laboratoire Agronomie et Environnement Nancy-Colmar, Vandœuvre-lès-Nancy, France
| | - Frederic Bourgaud
- Université de Lorraine, INRA, UMR 1121 Laboratoire Agronomie et Environnement Nancy-Colmar, Vandœuvre-lès-Nancy, France
| | - Andrew A Meharg
- Institute for Global Food Security, Queen’s University Belfast, David Keir Building, Malone Road, Belfast, UK
| | - Manus Carey
- Institute for Global Food Security, Queen’s University Belfast, David Keir Building, Malone Road, Belfast, UK
| | - Ewa Lojkowska
- Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Abrahama, Gdansk, Poland
| | - Anna Ihnatowicz
- Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Abrahama, Gdansk, Poland
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16
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Design, Synthesis and Antifungal Activity of Psoralen Derivatives. Molecules 2017; 22:molecules22101672. [PMID: 28991209 PMCID: PMC6151755 DOI: 10.3390/molecules22101672] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 10/04/2017] [Indexed: 11/16/2022] Open
Abstract
A series of linear furanocoumarins with different substituents have been designed and synthesized. Their structures were confirmed by ¹H-NMR spectroscopy, high resolution mass spectra (EI-MS), IR, and X-ray single-crystal diffraction. All of the target compounds were evaluated in vitro for their antifungal activity against Rhizoctorzia solani, Botrytis cinerea, Alternaria solani, Gibberella zeae, Cucumber anthrax, and Alternaria leaf spot at 100 μg/mL, and some of the designed compounds exhibited potential antifungal activities. Compound 3a (67.9%) exhibited higher activity than the control Osthole (66.1%) against Botrytis cinerea. Furthermore, compound 4b (62.4%) represented equivalent antifungal activity as Osthole (69.5%) against Rhizoctonia solani. The structure-activity relationship (SAR) study demonstrates that linear furanocoumarin moiety has an important effect on the antifungal activity, promoting the idea of the coumarin ring as a framework that might be exploited in the future.
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17
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Bartley GE, Avena-Bustillos RJ, Du WX, Hidalgo M, Cain B, Breksa AP. Transcriptional regulation of chlorogenic acid biosynthesis in carrot root slices exposed to UV-B light. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.plgene.2016.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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18
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Zhao Y, Wang N, Zeng Z, Xu S, Huang C, Wang W, Liu T, Luo J, Kong L. Cloning, Functional Characterization, and Catalytic Mechanism of a Bergaptol O-Methyltransferase from Peucedanum praeruptorum Dunn. FRONTIERS IN PLANT SCIENCE 2016; 7:722. [PMID: 27252733 PMCID: PMC4879325 DOI: 10.3389/fpls.2016.00722] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 05/10/2016] [Indexed: 05/15/2023]
Abstract
Coumarins are main active components of Peucedanum praeruptorum Dunn. Among them, methoxylated coumarin compound, such as bergapten, xanthotoxin, and isopimpinellin, has high officinal value and plays an important role in medicinal field. However, major issues associated with the biosynthesis mechanism of coumarins remain unsolved and no corresponding enzyme has been cloned from P. praeruptorum. In this study, a local BLASTN program was conducted to find the candidate genes from P. praeruptorum transcriptome database using the nucleotide sequence of Ammi majus bergaptol O-methyltransferase (AmBMT, GenBank accession No: AY443006) as a template. As a result, a 1335 bp full-length of cDNA sequence which contains an open reading frame of 1080 bp encoding a BMT polypeptide of 359 amino acids was obtained. The recombinant protein was functionally expressed in Escherichia coli and displayed an observed activity to bergaptol. In vitro experiments show that the protein has narrow substrate specificity for bergaptol. Expression profile indicated that the cloned gene had a higher expression level in roots and can be induced by methyl jasmonate (MeJA). Subcellular localization analysis showed that the BMT protein was located in cytoplasm in planta. Homology modeling and docking based site-directed mutagenesis have been employed to investigate the amino acid residues in BMT required for substrate binding and catalysis. Conservative amino acid substitutions at residue H264 affected BMT catalysis, whereas substitutions at residues F171, M175, D226, and L312 affected substrate binding. The systemic study summarized here will enlarge our knowledge on OMTs and provide useful information in investigating the coumarins biosynthesis mechanism in P. praeruptorum.
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Affiliation(s)
- Yucheng Zhao
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, NanjingChina
| | - Nana Wang
- College of Life Science and Technology, Huazhong Agricultural University, WuhanChina
| | - Zhixiong Zeng
- College of Life Science and Technology, Huazhong Agricultural University, WuhanChina
| | - Sheng Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, NanjingChina
| | - Chuanlong Huang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, NanjingChina
| | - Wei Wang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, NanjingChina
| | - Tingting Liu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, NanjingChina
| | - Jun Luo
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, NanjingChina
- *Correspondence: Lingyi Kong, ; Jun Luo,
| | - Lingyi Kong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, NanjingChina
- *Correspondence: Lingyi Kong, ; Jun Luo,
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19
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Content evaluation of 4 furanocoumarin monomers in various citrus germplasms. Food Chem 2015; 187:75-81. [DOI: 10.1016/j.foodchem.2015.04.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 04/01/2015] [Accepted: 04/03/2015] [Indexed: 11/22/2022]
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20
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Zhao Y, Liu T, Luo J, Zhang Q, Xu S, Han C, Xu J, Chen M, Chen Y, Kong L. Integration of a Decrescent Transcriptome and Metabolomics Dataset of Peucedanum praeruptorum to Investigate the CYP450 and MDR Genes Involved in Coumarins Biosynthesis and Transport. FRONTIERS IN PLANT SCIENCE 2015; 6:996. [PMID: 26697023 PMCID: PMC4674560 DOI: 10.3389/fpls.2015.00996] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 10/30/2015] [Indexed: 05/09/2023]
Abstract
Peucedanum praeruptorum Dunn is well-known traditional Chinese medicine. However, little is known in the biosynthesis and the transport mechanisms of its coumarin compounds at the molecular level. Although transcriptomic sequence is playing an increasingly significant role in gene discovery, it is not sufficient in predicting the specific function of target gene. Furthermore, there is also a huge database to be analyzed. In this study, RNA sequencing assisted transcriptome dataset and high-performance liquid chromatography (HPLC) coupled with electrospray-ionization quadrupole time-of-flight mass spectrometry (Q-TOF MS)-based metabolomics dataset of P. praeruptorum were firstly constructed for gene discovery and compound identification. Subsequently, methyl jasmonate (MeJA)-induced gene expression analysis and metabolomics analysis were conducted to narrow-down the dataset for selecting the candidate genes and the potential marker metabolites. Finally, the genes involved in coumarins biosynthesis and transport were predicted with parallel analysis of transcript and metabolic profiles. As a result, a total of 40,952 unigenes and 19 coumarin compounds were obtained. Based on the results of gene expression and metabolomics analysis, 7 cytochrome-P450 and 8 multidrug resistance transporter unigenes were selected as candidate genes and 8 marker compounds were selected as biomarkers, respectively. The parallel analysis of gene expression and metabolites accumulation indicated that the gene labeled as 23,746, 228, and 30,922 were related to the formation of the coumarin core compounds whereas 36,276 and 9533 participated in the prenylation, hydroxylation, cyclization or structural modification. Similarly, 1462, 20,815, and 15,318 participated in the transport of coumarin core compounds while 124,029 and 324,293 participated in the transport of the modified compounds. This finding suggested that integration of a decrescent transcriptome and metabolomics dataset could largely narrow down the number of gene to be investigated and significantly improve the efficiency of functional gene predication. In addition, the large amount of transcriptomic data produced from P. praeruptorum and the genes discovered in this study would provide useful information in investigating the biosynthesis and transport mechanism of coumarins.
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Affiliation(s)
- Yucheng Zhao
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Tingting Liu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Jun Luo
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Qian Zhang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Sheng Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of SciencesNanjing, China
| | - Chao Han
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Jinfang Xu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Menghan Chen
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Yijun Chen
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
| | - Lingyi Kong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical UniversityNanjing, China
- *Correspondence: Lingyi Kong
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21
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Hao DC, Chen SL, Osbourn A, Kontogianni VG, Liu LW, Jordán MJ. Temporal transcriptome changes induced by methyl jasmonate in Salvia sclarea. Gene 2014; 558:41-53. [PMID: 25536164 DOI: 10.1016/j.gene.2014.12.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 12/18/2014] [Accepted: 12/19/2014] [Indexed: 10/24/2022]
Abstract
Salvia sclarea is a traditional medicinal and aromatic plant that grows in Europe and produces various economically important compounds, including phenylpropanoid derivatives and terpenoids. Methyl jasmonate (MeJA) is commonly used to elicit plant stress responses. However, how MeJA enhances production of secondary metabolites in S. sclarea is not well understood. We performed a genome-wide analysis of temporal gene expression in S. sclarea leaves and roots. The transcriptome profiles 0, 10 and 26 h after MeJA treatment were analyzed by Illumina RNA-Seq. A total of 16,142 isogenes (average length 866bp; N50 1035bp) were obtained by de novo assembly of 35,757,567 raw sequencing reads. When these sequencing reads were mapped onto the assembled Unigenes, 3236, 2792 and 798 Unigenes were found to be expressed differentially between 0 and 10h, 0 and 26 h, and 10 and 26h, respectively. These included many secondary metabolite biosynthesis, stress and defense-related genes. A qRT-PCR analysis confirmed the expression profiles of selected differentially expressed genes (DEGs) revealed by RNA-Seq data, and also extended our analysis of differential gene expression to 73 h. Our investigations revealed temporal differences in the responses of S. sclarea to MeJA treatment. MeJA treatment induced the expression of a large number of genes involved in phenylpropanoid biosynthesis, especially between 0 and 10h, and 0 and 26 h. Additionally, many genes encoding transcription factors, cytochrome P450s, glycosyltransferases, methyltransferases and transporters were shown to respond to MeJA elicitation. DEGs related to structural molecule activity and cell death showed a significant temporal variation. A chromatographic analysis of metabolites at 26h, 73h and six days after MeJA treatment indicated that these transcriptomic changes precede MeJA-induced changes in secondary metabolite content. This study sheds light on the molecular mechanisms of MeJA elicitation and is helpful in understanding how exogenous MeJA treatment mediates extensive plant transcriptome reprogramming/remodeling. Our results can be utilized to characterize genes related to secondary metabolism and their regulation, and in breeding S. sclarea for desirable chemotypes.
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Affiliation(s)
- Da Cheng Hao
- Biotechnology Institute, School of Environment, Dalian Jiaotong University, Dalian 116028, China.
| | - Shi Lin Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Anne Osbourn
- Department of Metabolic Biology, John Innes Centre, Norwich NR4 7UH, UK.
| | | | - Li Wei Liu
- Department of Mathematics, School of Science, Dalian Jiaotong University, Dalian 116028, China
| | - Maria J Jordán
- Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), Departamento de Recursos Naturales y Desarrollo Rural, C./Mayor s/n, 30150 La Alberca, Murcia, Spain
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22
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Rana S, Bhat WW, Dhar N, Pandith SA, Razdan S, Vishwakarma R, Lattoo SK. Molecular characterization of two A-type P450s, WsCYP98A and WsCYP76A from Withania somnifera (L.) Dunal: expression analysis and withanolide accumulation in response to exogenous elicitations. BMC Biotechnol 2014; 14:89. [PMID: 25416924 PMCID: PMC4247701 DOI: 10.1186/s12896-014-0089-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 10/06/2014] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Pharmacological investigations position withanolides as important bioactive molecules demanding their enhanced production. Therefore, one of the pivotal aims has been to gain knowledge about complete biosynthesis of withanolides in terms of enzymatic and regulatory genes of the pathway. However, the pathway remains elusive at the molecular level. P450s monooxygenases play a crucial role in secondary metabolism and predominantly help in functionalizing molecule core structures including withanolides. RESULTS In an endeavor towards identification and characterization of different P450s, we here describe molecular cloning, characterization and expression analysis of two A-type P450s, WsCYP98A and WsCYP76A from Withania somnifera. Full length cDNAs of WsCYP98A and WsCYP76A have open reading frames of 1536 and 1545 bp encoding 511 (58.0 kDa) and 515 (58.7 kDa) amino acid residues, respectively. Entire coding sequences of WsCYP98A and WsCYP76A cDNAs were expressed in Escherichia coli BL21 (DE3) using pGEX4T-2 expression vector. Quantitative real-time PCR analysis indicated that both genes express widely in leaves, stalks, roots, flowers and berries with higher expression levels of WsCYP98A in stalks while WsCYP76A transcript levels were more obvious in roots. Further, transcript profiling after methyl jasmonate, salicylic acid, and gibberellic acid elicitations displayed differential transcriptional regulation of WsCYP98A and WsCYP76A. Copious transcript levels of both P450s correlated positively with the higher production of withanolides. CONCLUSIONS Two A-types P450 WsCYP98A and WsCYP76A were isolated, sequenced and heterologously expressed in E. coli. Both P450s are spatially regulated at transcript level showing differential tissue specificity. Exogenous elicitors acted as both positive and negative regulators of mRNA transcripts. Methyl jasmonate and salicylic acid resulted in copious expression of WsCYP98A and WsCYP76A. Enhanced mRNA levels also corroborated well with the increased accumulation of withanolides in response to elicitations. The empirical findings suggest that elicitors possibly incite defence or stress responses of the plant by triggering higher accumulation of withanolides.
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Affiliation(s)
- Satiander Rana
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, Tawi-180001, India.
| | - Wajid Waheed Bhat
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, Tawi-180001, India.
| | - Niha Dhar
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, Tawi-180001, India.
| | - Shahzad A Pandith
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, Tawi-180001, India.
| | - Sumeer Razdan
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, Tawi-180001, India.
| | - Ram Vishwakarma
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, Tawi-180001, India.
| | - Surrinder K Lattoo
- Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu, Tawi-180001, India.
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Siwinska J, Kadzinski L, Banasiuk R, Gwizdek-Wisniewska A, Olry A, Banecki B, Lojkowska E, Ihnatowicz A. Identification of QTLs affecting scopolin and scopoletin biosynthesis in Arabidopsis thaliana. BMC PLANT BIOLOGY 2014; 14:280. [PMID: 25326030 PMCID: PMC4252993 DOI: 10.1186/s12870-014-0280-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 10/09/2014] [Indexed: 05/08/2023]
Abstract
BACKGROUND Scopoletin and its glucoside scopolin are important secondary metabolites synthesized in plants as a defense mechanism against various environmental stresses. They belong to coumarins, a class of phytochemicals with significant biological activities that is widely used in medical application and cosmetics industry. Although numerous studies showed that a variety of coumarins occurs naturally in several plant species, the details of coumarins biosynthesis and its regulation is not well understood. It was shown previously that coumarins (predominantly scopolin and scopoletin) occur in Arabidopsis thaliana (Arabidopsis) roots, but until now nothing is known about natural variation of their accumulation in this model plant. Therefore, the genetic architecture of coumarins biosynthesis in Arabidopsis has not been studied before. RESULTS Here, the variation in scopolin and scopoletin content was assessed by comparing seven Arabidopsis accessions. Subsequently, a quantitative trait locus (QTL) mapping was performed with an Advanced Intercross Recombinant Inbred Lines (AI-RILs) mapping population EstC (Est-1 × Col). In order to reveal the genetic basis of both scopolin and scopoletin biosynthesis, two sets of methanol extracts were made from Arabidopsis roots and one set was additionally subjected to enzymatic hydrolysis prior to quantification done by high-performance liquid chromatography (HPLC). We identified one QTL for scopolin and five QTLs for scopoletin accumulation. The identified QTLs explained 13.86% and 37.60% of the observed phenotypic variation in scopolin and scopoletin content, respectively. In silico analysis of genes located in the associated QTL intervals identified a number of possible candidate genes involved in coumarins biosynthesis. CONCLUSIONS Together, our results demonstrate for the first time that Arabidopsis is an excellent model for studying the genetic and molecular basis of natural variation in coumarins biosynthesis in plants. It additionally provides a basis for fine mapping and cloning of the genes involved in scopolin and scopoletin biosynthesis. Importantly, we have identified new loci for this biosynthetic process.
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Affiliation(s)
- Joanna Siwinska
- />Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, ul. Kladki 24, Gdansk, 80-822 Poland
| | - Leszek Kadzinski
- />Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, ul. Kladki 24, Gdansk, 80-822 Poland
| | - Rafal Banasiuk
- />Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, ul. Kladki 24, Gdansk, 80-822 Poland
| | - Anna Gwizdek-Wisniewska
- />Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, ul. Kladki 24, Gdansk, 80-822 Poland
| | - Alexandre Olry
- />Université de Lorraine, UMR 1121 Laboratoire Agronomie et Environnement Nancy-Colmar, 2 avenue de la forêt de Haye, Vandœuvre-lès-Nancy, 54505 France
- />INRA, UMR 1121 Laboratoire Agronomie et Environnement Nancy-Colmar, 2 avenue de la forêt de Haye, Vandœuvre-lès-Nancy, 54505 France
| | - Bogdan Banecki
- />Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, ul. Kladki 24, Gdansk, 80-822 Poland
| | - Ewa Lojkowska
- />Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, ul. Kladki 24, Gdansk, 80-822 Poland
| | - Anna Ihnatowicz
- />Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, ul. Kladki 24, Gdansk, 80-822 Poland
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Cloning and Characterization ofLonicera japonicap-Coumaroyl Ester 3-Hydroxylase Which Is Involved in the Biosynthesis of Chlorogenic Acid. Biosci Biotechnol Biochem 2014; 77:1403-9. [DOI: 10.1271/bbb.130011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Piovan A, Filippini R, Innocenti G. Coumarin Compounds in Coronilla scorpioidesCallus Cultures. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Coronilla scorpioides (L.) W.D.J. Koch is known for producing several compounds with pharmaceutical interest, such as the hydroxycoumarins umbelliferone, scopoletin and daphnoretin, the dihydrofuranocoumarin marmesin, and the furocoumarin psoralen. In vitro callus cultures of C. scorpioides were established from hypocotyl, leaf, stem internode and root explants in order to evaluate the possibility of in vitro production of these active secondary metabolites. Calli were obtained with high frequency from all the explant types both in B5 and MS medium. However, after the third subculture, B5 medium, giving the best results, was selected for subsequent transfers. Homogeneous calli were kept either in darkness or in light. Chemical analyses showed that scopoletin and the intermediate products of the biogenetic pathway of psoralen, umbelliferone and marmesin, were always present in the calli and excreted into the media, while daphnoretin was never detected. Light seems to be a prerequisite for psoralen biosynthesis. Root-derived calli produced a significantly higher amount of psoralen (137.5 μg g−1DW). Principal component analysis showed that umbelliferone, marmesin and psoralen contents are related to variables associated with different explant types.
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Affiliation(s)
- Anna Piovan
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, - 35131 Padova, Italy
| | - Raffaella Filippini
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, - 35131 Padova, Italy
| | - Gabbriella Innocenti
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, - 35131 Padova, Italy
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Karamat F, Olry A, Munakata R, Koeduka T, Sugiyama A, Paris C, Hehn A, Bourgaud F, Yazaki K. A coumarin-specific prenyltransferase catalyzes the crucial biosynthetic reaction for furanocoumarin formation in parsley. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2014; 77:627-38. [PMID: 24354545 DOI: 10.1111/tpj.12409] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 12/05/2013] [Accepted: 12/06/2013] [Indexed: 05/09/2023]
Abstract
Furanocoumarins constitute a sub-family of coumarin compounds with important defense properties against pathogens and insects, as well as allelopathic functions in plants. Furanocoumarins are divided into two sub-groups according to the alignment of the furan ring with the lactone structure: linear psoralen and angular angelicin derivatives. Determination of furanocoumarin type is based on the prenylation position of the common precursor of all furanocoumarins, umbelliferone, at C6 or C8, which gives rise to the psoralen or angelicin derivatives, respectively. Here, we identified a membrane-bound prenyltransferase PcPT from parsley (Petroselinum crispum), and characterized the properties of the gene product. PcPT expression in various parsley tissues is increased by UV irradiation, with a concomitant increase in furanocoumarin production. This enzyme has strict substrate specificity towards umbelliferone and dimethylallyl diphosphate, and a strong preference for the C6 position of the prenylated product (demethylsuberosin), leading to linear furanocoumarins. The C8-prenylated derivative (osthenol) is also formed, but to a much lesser extent. The PcPT protein is targeted to the plastids in planta. Introduction of this PcPT into the coumarin-producing plant Ruta graveolens showed increased consumption of endogenous umbelliferone. Expression of PcPT and a 4-coumaroyl CoA 2'-hydroxylase gene in Nicotiana benthamiana, which does not produce furanocoumarins, resulted in formation of demethylsuberosin, indicating that furanocoumarin production may be reconstructed by a metabolic engineering approach. The results demonstrate that a single prenyltransferase, such as PcPT, opens the pathway to linear furanocoumarins in parsley, but may also catalyze the synthesis of osthenol, the first intermediate committed to the angular furanocoumarin pathway, in other plants.
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Affiliation(s)
- Fazeelat Karamat
- Laboratoire Agronomie et Environnement Nancy-Colmar, UMR 1121, Université de Lorraine, 2 Avenue de la Forêt de Haye TSA 40602, 54518, Vandoeuvre-lès-Nancy, France; Laboratoire Agronomie et Environnement Nancy-Colmar, UMR 1121, INRA, 2 Avenue de la Forêt de Haye TSA 40602, 54518, Vandoeuvre-lès-Nancy, France
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Kim YB, Thwe AA, Kim YJ, Li X, Kim HH, Park PB, Suzuki T, Kim SJ, Park SU. Characterization of genes for a putative hydroxycinnamoyl-coenzyme A quinate transferase and p-coumarate 3'-hydroxylase and chlorogenic acid accumulation in tartary buckwheat. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4120-6. [PMID: 23550515 DOI: 10.1021/jf4000659] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Tartary buckwheat ( Fagopyrum tataricum Gaertn.) contains a high level of flavonoid compounds, which have beneficial and pharmacological effects on health. In this study, we isolated full-length cDNAs encoding hydroxycinnamoyl-coenzyme A quinate hydroxycinnamoyltransferase (HQT) and p-coumarate 3'-hydroxylase (C3H), which are involved in chlorogenic acid (CGA) biosynthesis. We examined the expression levels of HQT and C3H using real-time RT-PCR in different organs and sprouts of two tartary buckwheat cultivars (Hokkai T8 and T10) and analyzed CGA content using high-performance liquid chromatography. Among the organs, the flowers in both cultivars showed the highest levels of CGA. We concluded that the expression pattern of FtHQT and FtC3H did not match the accumulation pattern of CGA in different organs of T8 and T10 cultivars. Gene expression and CGA content varied between the cultivars. We presume that FtHQT and FtC3H levels might be controlled by multiple metabolic pathways in different organs of tartary buckwheat. Probably, FtC3H might have a greater effect on CGA biosynthesis than FtHQT. Our results will be helpful for a greater understanding of CGA biosynthesis in tartary buckwheat.
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Affiliation(s)
- Yeon Bok Kim
- Department of Crop Science, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Korea
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