1
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Chen J, Qiu X, Sun Z, Luan M, Chen J. Genome-wide analysis of UDP-glycosyltransferase family in Citrus sinensis and characterization of a UGT gene encoding flavonoid 1-2 rhamnosyltransferase. Int J Biol Macromol 2024; 280:135752. [PMID: 39299422 DOI: 10.1016/j.ijbiomac.2024.135752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 09/12/2024] [Accepted: 09/16/2024] [Indexed: 09/22/2024]
Abstract
UDP-glycosyltransferases (UGTs) play a crucial role in the glycosylation of secondary metabolites in plants, which is of significant importance for growth and response to biotic or abiotic stress. Despite the wide identification of UGT family members in various species, limited information is available regarding this family in citrus. In this study, we identified 87 UGT genes from the Citrus sinensis genome and classified them into 14 groups. We characterized their gene structures and motif compositions, providing insights into the molecular basis underlying discrepant functions of UGT genes within each evolutionary branch. Tandem duplication events were found to be the main driving force behind UGT gene expansion. Additionally, we identified numerous cis-acting elements in the promoter region of UGT genes, including those responsive to light, growth factors, phytohormones, and stress conditions. Notably, light-responsive elements were found with a frequency of 100 %. We elucidated the expression pattern of UGTs during fruit development in Citrus aurantium using RNA-seq and quantitative real-time PCR (qRT-PCR), revealing that 10 key UGT genes are closely associated with biosynthesis of bitter flavanone neohesperidosides (FNHs). Furthermore, we identified Ca1,2RhaT as a flavonoid 1-2 rhamnosyltransferase (1,2RhaT) involved in FNHs biosynthesis for the first time. Isolation and functional characterization of the gene Ca1,2RhaT from Citrus aurantium in vitro and in vivo indicated that Ca1,2RhaT encoded a citrus 1,2RhaT and possessed rhamnosyl transfer activities. This work provides comprehensive information on the UGT family while offering new insights into understanding molecular mechanisms regulating specific accumulation patterns of FNHs or non-bitter flavanone rutinosides (FRTs) in citrus.
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Affiliation(s)
- Jing Chen
- Shandong Peanut Research Institute, Qingdao, Shandong 266100, PR China; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Xiaojun Qiu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Zhimin Sun
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China
| | - Mingbao Luan
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China; National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572000, PR China.
| | - Jianhua Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, PR China.
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2
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Yuan Z, Li G, Zhang H, Peng Z, Ding W, Wen H, Zhou H, Zeng J, Chen J, Xu J. Four novel Cit7GlcTs functional in flavonoid 7- O-glucoside biosynthesis are vital to flavonoid biosynthesis shunting in citrus. HORTICULTURE RESEARCH 2024; 11:uhae098. [PMID: 38863995 PMCID: PMC11165160 DOI: 10.1093/hr/uhae098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 03/25/2024] [Indexed: 06/13/2024]
Abstract
Citrus fruits have abundant flavonoid glycosides (FGs), an important class of natural functional and flavor components. However, there have been few reports about the modification of UDP-glycosyltransferases (UGTs) on flavonoids in citrus. Notably, in flavonoid biosynthesis, 7-O-glucosylation is the initial and essential step of glycosylation prior to the synthesis of flavanone disaccharides, the most abundant and iconic FGs in citrus fruits. Here, based on the accumulation of FGs observed at the very early fruit development stage of two pummelo varieties, we screened six novel flavonoid 7-O-glucosyltransferase genes (7GlcTs) via transcriptomic analysis and then characterized them in vitro. The results revealed that four Cg7GlcTs possess wide catalytic activities towards various flavonoid substrates, with CgUGT89AK1 exhibiting the highest catalytic efficiency. Transient overexpression of CgUGT90A31 and CgUGT89AK1 led to increases in FG synthesis in pummelo leaves. Interestingly, these two genes had conserved sequences and consistent functions across different germplasms. Moreover, CitUGT89AK1 was found to play a role in the response of citrus to Huanglongbing infection by promoting FG production. The findings improve our understanding of flavonoid 7-O-glucosylation by identifying the key genes, and may help improve the benefits of flavonoid biosynthesis for plants and humans in the future.
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Affiliation(s)
- Ziyu Yuan
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Gu Li
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Huixian Zhang
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Zhaoxin Peng
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
| | - Wenyu Ding
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
| | - Huan Wen
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
| | - Hanxin Zhou
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiwu Zeng
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource, Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Jiajing Chen
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Juan Xu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
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3
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Wen J, Wang Y, Lu X, Pan H, Jin D, Wen J, Jin C, Sahu SK, Su J, Luo X, Jin X, Zhao J, Wu H, Liu EH, Liu H. An integrated multi-omics approach reveals polymethoxylated flavonoid biosynthesis in Citrus reticulata cv. Chachiensis. Nat Commun 2024; 15:3991. [PMID: 38734724 PMCID: PMC11088696 DOI: 10.1038/s41467-024-48235-y] [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: 01/24/2023] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Citrus reticulata cv. Chachiensis (CRC) is an important medicinal plant, its dried mature peels named "Guangchenpi", has been used as a traditional Chinese medicine to treat cough, indigestion, and lung diseases for several hundred years. However, the biosynthesis of the crucial natural products polymethoxylated flavonoids (PMFs) in CRC remains unclear. Here, we report a chromosome-scale genome assembly of CRC with the size of 314.96 Mb and a contig N50 of 16.22 Mb. Using multi-omics resources, we discover a putative caffeic acid O-methyltransferase (CcOMT1) that can transfer a methyl group to the 3-hydroxyl of natsudaidain to form 3,5,6,7,8,3',4'-heptamethoxyflavone (HPMF). Based on transient overexpression and virus-induced gene silencing experiments, we propose that CcOMT1 is a candidate enzyme in HPMF biosynthesis. In addition, a potential gene regulatory network associated with PMF biosynthesis is identified. This study provides insights into PMF biosynthesis and may assist future research on mining genes for the biosynthesis of plant-based medicines.
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Affiliation(s)
- Jiawen Wen
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
- College of Life Sciences, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yayu Wang
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
| | - Xu Lu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing, 210009, China
| | - Huimin Pan
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Dian Jin
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing, 210009, China
| | - Jialing Wen
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
- College of Life Sciences, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Canzhi Jin
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
- College of Life Sciences, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Sunil Kumar Sahu
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
- College of Life Sciences, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Jianmu Su
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Xinyue Luo
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
- College of Life Sciences, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Xiaohuan Jin
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
| | - Jiao Zhao
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China
| | - Hong Wu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China.
| | - E-Hu Liu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Huan Liu
- State Key Laboratory of Agricultural Genomics, Key Laboratory of Genomics, Ministry of Agriculture, BGI Research, Shenzhen, 518083, China.
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4
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Ziaikin E, Tello E, Peterson DG, Niv MY. BitterMasS: Predicting Bitterness from Mass Spectra. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:10537-10547. [PMID: 38685906 PMCID: PMC11082931 DOI: 10.1021/acs.jafc.3c09767] [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: 12/25/2023] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 05/02/2024]
Abstract
Bitter compounds are common in nature and among drugs. Previously, machine learning tools were developed to predict bitterness from the chemical structure. However, known structures are estimated to represent only 5-10% of the metabolome, and the rest remain unassigned or "dark". We present BitterMasS, a Random Forest classifier that was trained on 5414 experimental mass spectra of bitter and nonbitter compounds, achieving precision = 0.83 and recall = 0.90 for an internal test set. Next, the model was tested against spectra newly extracted from the literature 106 bitter and nonbitter compounds and for additional spectra measured for 26 compounds. For these external test cases, BitterMasS exhibited 67% precision and 93% recall for the first and 58% accuracy and 99% recall for the second. The spectrum-bitterness prediction strategy was more effective than the spectrum-structure-bitterness prediction strategy and covered more compounds. These encouraging results suggest that BitterMasS can be used to predict bitter compounds in the metabolome without the need for structural assignment of individual molecules. This may enable identification of bitter compounds from metabolomics analyses, for comparing potential bitterness levels obtained by different treatments of samples and for monitoring bitterness changes overtime.
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Affiliation(s)
- Evgenii Ziaikin
- Food
Science and Nutrition, The Robert H. Smith Faculty of Agriculture,
Food and Environment, The Institute of Biochemistry, Food and Nutrition, The Hebrew University of Jerusalem, 76100 Rehovot, Israel
| | - Edisson Tello
- Department
of Food Science and Technology, College of Food, Agriculture, and
Environmental Sciences, The Ohio State University, Columbus, Ohio 43210, United States
| | - Devin G. Peterson
- Department
of Food Science and Technology, College of Food, Agriculture, and
Environmental Sciences, The Ohio State University, Columbus, Ohio 43210, United States
| | - Masha Y. Niv
- Food
Science and Nutrition, The Robert H. Smith Faculty of Agriculture,
Food and Environment, The Institute of Biochemistry, Food and Nutrition, The Hebrew University of Jerusalem, 76100 Rehovot, Israel
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5
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Yang J, Chen R, Wang C, Li C, Ye W, Zhang Z, Wang S. A widely targeted metabolite modificomics strategy for modified metabolites identification in tomato. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:810-823. [PMID: 38375781 DOI: 10.1111/jipb.13629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 02/04/2024] [Indexed: 02/21/2024]
Abstract
The structural and functional diversity of plant metabolites is largely created via chemical modification of a basic backbone. However, metabolite modifications in plants have still not been thoroughly investigated by metabolomics approaches. In this study, a widely targeted metabolite modificomics (WTMM) strategy was developed based on ultra-high performance liquid chromatography-quadrupole-linear ion trap (UHPLC-Q-Trap) and UHPLC-Q-Exactive-Orbitrap (UHPLC-QE-Orbitrap), which greatly improved the detection sensitivity and the efficiency of identification of modified metabolites. A metabolite modificomics study was carried out using tomato as a model, and over 34,000 signals with MS2 information were obtained from approximately 232 neutral loss transitions. Unbiased metabolite profiling was also performed by utilizing high-resolution mass spectrometry data to annotate a total of 2,118 metabolites with 125 modification types; of these, 165 modified metabolites were identified in this study. Next, the WTMM database was used to assess diseased tomato tissues and 29 biomarkers were analyzed. In summary, the WTMM strategy is not only capable of large-scale detection and quantitative analysis of plant-modified metabolites in plants, but also can be used for plant biomarker development.
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Affiliation(s)
- Jun Yang
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
| | - Ridong Chen
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
| | - Chao Wang
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
| | - Chun Li
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
| | - Weizhen Ye
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
| | - Zhonghui Zhang
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
| | - Shouchuang Wang
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
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6
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Gao Q, Gao S, Zeng W, Li J, Zhou J. Enhancing (2S)-naringenin production in Saccharomyces cerevisiae by high-throughput screening method based on ARTP mutagenesis. 3 Biotech 2024; 14:85. [PMID: 38379664 PMCID: PMC10874921 DOI: 10.1007/s13205-023-03892-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/14/2023] [Indexed: 02/22/2024] Open
Abstract
(2S)-Naringenin, a dihydro-flavonoid, serves as a crucial precursor for flavonoid synthesis due to its extensive medicinal values and physiological functions. A pathway for the synthesis of (2S)-naringenin from glucose has previously been constructed in Saccharomyces cerevisiae through metabolic engineering. However, this synthetic pathway of (2S)-naringenin is lengthy, and the genes involved in the competitive pathway remain unknown, posing challenges in significantly enhancing (2S)-naringenin production through metabolic modification. To address this issue, a novel high-throughput screening (HTS) method based on color reaction combined with a random mutagenesis method called atmospheric room temperature plasma (ARTP), was established in this study. Through this approach, a mutant (B7-D9) with a higher titer of (2S)-naringenin was obtained from 9600 mutants. Notably, the titer was enhanced by 52.3% and 19.8% in shake flask and 5 L bioreactor respectively. This study demonstrates the successful establishment of an efficient HTS method that can be applied to screen for high-titer producers of (2S)-naringenin, thereby greatly improving screening efficiency and providing new insights and solutions for similar product screenings.
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Affiliation(s)
- Qian Gao
- Engineering Research Center of Ministry of Education On Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
| | - Song Gao
- Engineering Research Center of Ministry of Education On Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, 214122 China
| | - Weizhu Zeng
- Engineering Research Center of Ministry of Education On Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, 214122 China
| | - Jianghua Li
- Engineering Research Center of Ministry of Education On Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, 214122 China
- Key Laboratory of Industrial Biotechnology, Ministry of Education and School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
| | - Jingwen Zhou
- Engineering Research Center of Ministry of Education On Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Rd, Wuxi, 214122 China
- Key Laboratory of Industrial Biotechnology, Ministry of Education and School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 Jiangsu China
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7
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Chang X, Fang X, Yao Y, Xu Z, Wu C, Lu L. Identification and Characterization of Glycosyltransferases Involved in the Biosynthesis of Neodiosmin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4348-4357. [PMID: 38354268 DOI: 10.1021/acs.jafc.3c09308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Glycosylation plays a very important role in plant secondary metabolic modifications. Neodiosmin, identified as diosmetin-7-O-neohesperidoside, not only acts to mitigate bitterness and enhance the flavor of food but also serves as a pivotal metabolite that reinforces plant immunity. Investigating its biosynthetic pathway in plants is crucial for optimizing fruit quality and fortifying plant immune responses. In this study, through analysis of transcriptomic data from Astilbe chinensis, we identified two novel uridine diphosphate (UDP)-glycosyltransferases (UGTs): Ach14791 (AcUGT73C18), responsible for flavonoid 7-O-glycosylation and Ach15849 (AcUGT79B37), involved in flavonoid-7-O-glucoside-2″-O-rhamnosylation. By delving into enzymatic properties and catalytic promiscuity, we developed a biosynthesis route of neodiosmin by establishing a one-pot enzyme-catalyzed cascade reaction. Simultaneously, lonicerin and rhoifolin were also successfully synthesized using the same one-pot dual-enzyme catalytic reaction. Taken together, our findings not only identified two novel UGTs involved in neodiosmin biosynthesis but also provided important biocatalytic components for the microorganism-based biosynthesis of flavonoid-7-O-disaccharide compounds.
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Affiliation(s)
- Xiaosa Chang
- Department of Integrated Traditional Chinese Medicine and Western Medicine, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Xueting Fang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Yan Yao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Zhenni Xu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Chaoyan Wu
- Department of Integrated Traditional Chinese Medicine and Western Medicine, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Li Lu
- Department of Integrated Traditional Chinese Medicine and Western Medicine, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
- Hubei Hongshan Laboratory, Wuhan 430071, China
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8
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Wang S, Shen S, Wang C, Wang X, Yang C, Zhou S, Zhang R, Zhou Q, Yu H, Guo H, Zheng W, Liu X, Xu J, Deng X, Xu Q, Luo J. A metabolomics study in citrus provides insight into bioactive phenylpropanoid metabolism. HORTICULTURE RESEARCH 2024; 11:uhad267. [PMID: 38304332 PMCID: PMC10831325 DOI: 10.1093/hr/uhad267] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/01/2023] [Indexed: 02/03/2024]
Abstract
Abstract
Citrus fruits are widely consumed worldwide in juices or as fresh and provide a broad range of phytonutrients that are important for human health. Here, a citrus multi-omics resource is presented: comprehensive metabolic profiling of various citrus species was performed and metabolic profiles were compared among species, with a focus on the phenylpropanoid metabolic pathway. A metabolite-based genome-wide association analysis (mGWAS) of 154 pummelo accessions was performed using factored spectrally transformed linear mixed models (FaST-LMM) and efficient mixed-model association eXpedited (EMMAX), and the genetic and biochemical basis of metabolomic variation was comprehensively analysed. A metabolite-single nucleotide polymorphism-gene (metabolite-SNP-gene) interaction network was constructed for pummelo, and many candidate loci controlling the synthesis and regulation of bioactive compounds were identified; among these loci, three BAHD malonyltransferases were involved in the malonylation of flavonoid glycosides. Further investigation revealed that an R2R3-MYB transcription factor CgMYB1 positively controls the metabolism of phenylpropanoid molecules, particularly the flavonoid derivatives. This study provides valuable data resources on the metabolic regulatory networks of bioactive components in citrus, in addition to demonstrating an efficient method for metabolic pathway dissection and providing targets for future breeding work with the aim of improving nutritional value.
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Affiliation(s)
- Shouchuang Wang
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
- Yazhouwan National Laboratory, Sanya 572025, China
| | - Shuangqian Shen
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
- Yazhouwan National Laboratory, Sanya 572025, China
| | - Chao Wang
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
| | - Xia Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Chenkun Yang
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
| | - Shen Zhou
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
| | - Ran Zhang
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
| | - Qianqian Zhou
- National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, China
| | - Huiwen Yu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Hao Guo
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
| | - Weikang Zheng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Xianqing Liu
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
| | - Juan Xu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiuxin Deng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiang Xu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
| | - Jie Luo
- Sanya Nanfan Research Institute, Hainan University, Sanya, 572025, China
- Yazhouwan National Laboratory, Sanya 572025, China
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9
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Muradova M, Proskura A, Canon F, Aleksandrova I, Schwartz M, Heydel JM, Baranenko D, Nadtochii L, Neiers F. Unlocking Flavor Potential Using Microbial β-Glucosidases in Food Processing. Foods 2023; 12:4484. [PMID: 38137288 PMCID: PMC10742834 DOI: 10.3390/foods12244484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Aroma is among of the most important criteria that indicate the quality of food and beverage products. Aroma compounds can be found as free molecules or glycosides. Notably, a significant portion of aroma precursors accumulates in numerous food products as nonvolatile and flavorless glycoconjugates, termed glycosidic aroma precursors. When subjected to enzymatic hydrolysis, these seemingly inert, nonvolatile glycosides undergo transformation into fragrant volatiles or volatiles that can generate odor-active compounds during food processing. In this context, microbial β-glucosidases play a pivotal role in enhancing or compromising the development of flavors during food and beverage processing. β-glucosidases derived from bacteria and yeast can be utilized to modulate the concentration of particular aroma and taste compounds, such as bitterness, which can be decreased through hydrolysis by glycosidases. Furthermore, oral microbiota can influence flavor perception by releasing volatile compounds that can enhance or alter the perception of food products. In this review, considering the glycosidic flavor precursors present in diverse food and beverage products, we underscore the significance of glycosidases with various origins. Subsequently, we delve into emerging insights regarding the release of aroma within the human oral cavity due to the activity of oral microbial glycosidases.
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Affiliation(s)
- Mariam Muradova
- Molecular Mechanisms of Flavor Perception, Center for Taste and Feeding Behavior, INRAE, CNRS, University of Burgundy Franche-Comté, 21000 Dijon, France; (A.P.); (F.C.); (M.S.); (J.-M.H.)
- International Research Center “Biotechnologies of the Third Millennium”, Faculty of Biotechnologies (BioTech), ITMO University, 191002 Saint-Petersburg, Russia; (I.A.); (L.N.)
| | - Alena Proskura
- Molecular Mechanisms of Flavor Perception, Center for Taste and Feeding Behavior, INRAE, CNRS, University of Burgundy Franche-Comté, 21000 Dijon, France; (A.P.); (F.C.); (M.S.); (J.-M.H.)
- International Research Center “Biotechnologies of the Third Millennium”, Faculty of Biotechnologies (BioTech), ITMO University, 191002 Saint-Petersburg, Russia; (I.A.); (L.N.)
| | - Francis Canon
- Molecular Mechanisms of Flavor Perception, Center for Taste and Feeding Behavior, INRAE, CNRS, University of Burgundy Franche-Comté, 21000 Dijon, France; (A.P.); (F.C.); (M.S.); (J.-M.H.)
| | - Irina Aleksandrova
- International Research Center “Biotechnologies of the Third Millennium”, Faculty of Biotechnologies (BioTech), ITMO University, 191002 Saint-Petersburg, Russia; (I.A.); (L.N.)
| | - Mathieu Schwartz
- Molecular Mechanisms of Flavor Perception, Center for Taste and Feeding Behavior, INRAE, CNRS, University of Burgundy Franche-Comté, 21000 Dijon, France; (A.P.); (F.C.); (M.S.); (J.-M.H.)
| | - Jean-Marie Heydel
- Molecular Mechanisms of Flavor Perception, Center for Taste and Feeding Behavior, INRAE, CNRS, University of Burgundy Franche-Comté, 21000 Dijon, France; (A.P.); (F.C.); (M.S.); (J.-M.H.)
| | - Denis Baranenko
- International Research Center “Biotechnologies of the Third Millennium”, Faculty of Biotechnologies (BioTech), ITMO University, 191002 Saint-Petersburg, Russia; (I.A.); (L.N.)
| | - Liudmila Nadtochii
- International Research Center “Biotechnologies of the Third Millennium”, Faculty of Biotechnologies (BioTech), ITMO University, 191002 Saint-Petersburg, Russia; (I.A.); (L.N.)
| | - Fabrice Neiers
- Molecular Mechanisms of Flavor Perception, Center for Taste and Feeding Behavior, INRAE, CNRS, University of Burgundy Franche-Comté, 21000 Dijon, France; (A.P.); (F.C.); (M.S.); (J.-M.H.)
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10
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Shen S, Wang S, Yang C, Wang C, Zhou Q, Zhou S, Zhang R, Li Y, Wang Z, Dai L, Peng W, Hao Y, Guo H, Cao G, Liu X, Yao F, Xu Q, Fernie AR, Luo J. Elucidation of the melitidin biosynthesis pathway in pummelo. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:2505-2518. [PMID: 37675654 DOI: 10.1111/jipb.13564] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 09/06/2023] [Indexed: 09/08/2023]
Abstract
Specialized plant metabolism is a rich resource of compounds for drug discovery. The acylated flavonoid glycoside melitidin is being developed as an anti-cholesterol statin drug candidate, but its biosynthetic route in plants has not yet been fully characterized. Here, we describe the gene discovery and functional characterization of a new flavonoid gene cluster (UDP-glucuronosyltransferases (CgUGTs), 1,2 rhamnosyltransferase (Cg1,2RhaT), acyltransferases (CgATs)) that is responsible for melitidin biosynthesis in pummelo (Citrus grandis (L.) Osbeck). Population variation analysis indicated that the tailoring of acyltransferases, specific for bitter substrates, mainly determine the natural abundance of melitidin. Moreover, 3-hydroxy-3-methylglutaryl-CoA reductase enzyme inhibition assays showed that the product from this metabolic gene cluster, melitidin, may be an effective anti-cholesterol statin drug candidate. Co-expression of these clustered genes in Nicotiana benthamiana resulted in the formation of melitidin, demonstrating the potential for metabolic engineering of melitidin in a heterologous plant system. This study establishes a biosynthetic pathway for melitidin, which provides genetic resources for the breeding and genetic improvement of pummelo aimed at fortifying the content of biologically active metabolites.
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Affiliation(s)
- Shuangqian Shen
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Shouchuang Wang
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Chenkun Yang
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Chao Wang
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Qianqian Zhou
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, 430070, China
| | - Shen Zhou
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Ran Zhang
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Yufei Li
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Zixuan Wang
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, 430070, China
| | - Liupan Dai
- Hubei Hongshan Laboratory, College of Life Science and Technology, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, 430070, China
| | - Wenjv Peng
- National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, 430070, China
| | - Yingchen Hao
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Hao Guo
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Guangping Cao
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Xianqing Liu
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
| | - Fan Yao
- Hubei Hongshan Laboratory, College of Life Science and Technology, College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qiang Xu
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany
- Centre of Plant Systems Biology and Biotechnology, Plovdiv, 4000, Bulgaria
| | - Jie Luo
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya, 572025, China
- Yazhouwan National Laboratory, Sanya, 572025, China
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11
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Chen Y, Yan Q, Ji Y, Bai X, Li D, Mu R, Guo K, Yang M, Tao Y, Gershenzon J, Liu Y, Li S. Unraveling the serial glycosylation in the biosynthesis of steroidal saponins in the medicinal plant Paris polyphylla and their antifungal action. Acta Pharm Sin B 2023; 13:4638-4654. [PMID: 37969733 PMCID: PMC10638507 DOI: 10.1016/j.apsb.2023.05.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/29/2023] [Accepted: 05/18/2023] [Indexed: 11/17/2023] Open
Abstract
Sugar-sugar glycosyltransferases play important roles in constructing complex and bioactive saponins. Here, we characterized a series of UDP-glycosyltransferases responsible for biosynthesizing the branched sugar chain of bioactive steroidal saponins from a widely known medicinal plant Paris polyphylla var. yunnanensis. Among them, a 2'-O-rhamnosyltransferase and three 6'-O-glucosyltrasferases catalyzed a cascade of glycosylation to produce steroidal diglycosides and triglycosides, respectively. These UDP-glycosyltransferases showed astonishing substrate promiscuity, resulting in the generation of a panel of 24 terpenoid glycosides including 15 previously undescribed compounds. A mutant library containing 44 variants was constructed based on the identification of critical residues by molecular docking simulations and protein model alignments, and a mutant UGT91AH1Y187A with increased catalytic efficiency was obtained. The steroidal saponins exhibited remarkable antifungal activity against four widespread strains of human pathogenic fungi attributed to ergosterol-dependent damage of fungal cell membranes, and 2'-O-rhamnosylation appeared to correlate with strong antifungal effects. The findings elucidated the biosynthetic machinery for their production of steroidal saponins and revealed their potential as new antifungal agents.
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Affiliation(s)
- Yuegui Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qin Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yunheng Ji
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Xue Bai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Desen Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rongfang Mu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kai Guo
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Minjie Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yang Tao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | | | - Yan Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Shenghong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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12
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Lin Q, Chen J, Liu X, Wang B, Zhao Y, Liao L, Allan AC, Sun C, Duan Y, Li X, Grierson D, Verdonk JC, Chen K, Han Y, Bi J. A metabolic perspective of selection for fruit quality related to apple domestication and improvement. Genome Biol 2023; 24:95. [PMID: 37101232 PMCID: PMC10131461 DOI: 10.1186/s13059-023-02945-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 04/18/2023] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND Apple is an economically important fruit crop. Changes in metabolism accompanying human-guided evolution can be revealed using a multiomics approach. We perform genome-wide metabolic analysis of apple fruits collected from 292 wild and cultivated accessions representing various consumption types. RESULTS We find decreased amounts of certain metabolites, including tannins, organic acids, phenolic acids, and flavonoids as the wild accessions transition to cultivated apples, while lysolipids increase in the "Golden Delicious" to "Ralls Janet" pedigree, suggesting better storage. We identify a total of 222,877 significant single-nucleotide polymorphisms that are associated with 2205 apple metabolites. Investigation of a region from 2.84 to 5.01 Mb on chromosome 16 containing co-mapping regions for tannins, organic acids, phenolic acids, and flavonoids indicates the importance of these metabolites for fruit quality and nutrition during breeding. The tannin and acidity-related genes Myb9-like and PH4 are mapped closely to fruit weight locus fw1 from 3.41 to 3.76 Mb on chromosome 15, a region under selection during domestication. Lysophosphatidylethanolamine (LPE) 18:1, which is suppressed by fatty acid desaturase-2 (FAD2), is positively correlated to fruit firmness. We find the fruit weight is negatively correlated with salicylic acid and abscisic acid levels. Further functional assays demonstrate regulation of these hormone levels by NAC-like activated by Apetala3/Pistillata (NAP) and ATP binding cassette G25 (ABCG25), respectively. CONCLUSIONS This study provides a metabolic perspective for selection on fruit quality during domestication and improvement, which is a valuable resource for investigating mechanisms controlling apple metabolite content and quality.
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Affiliation(s)
- Qiong Lin
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
- Horticulture and Product Physiology, Department of Plant Sciences, Wageningen University, Wageningen, 6708 PD The Netherlands
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058 China
| | - Jing Chen
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Xuan Liu
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Bin Wang
- Wuhan Metware Biotechnology Co., Ltd., Wuhan, 430070 China
| | - Yaoyao Zhao
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Liao Liao
- Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
| | - Andrew C. Allan
- The New Zealand Institute for Plant and Food Research Limited, Auckland Mail Centre, Auckland, 1142 New Zealand
| | - Chongde Sun
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058 China
| | - Yuquan Duan
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Xuan Li
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Donald Grierson
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058 China
- Plant and Science Crop Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD UK
| | - Julian C. Verdonk
- Horticulture and Product Physiology, Department of Plant Sciences, Wageningen University, Wageningen, 6708 PD The Netherlands
| | - Kunsong Chen
- College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058 China
| | - Yuepeng Han
- Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
| | - Jinfeng Bi
- Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
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13
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Yang Q, Zhang Y, Qu X, Wu F, Li X, Ren M, Tong Y, Wu X, Yang A, Chen Y, Chen S. Genome-wide analysis of UDP-glycosyltransferases family and identification of UGT genes involved in abiotic stress and flavonol biosynthesis in Nicotiana tabacum. BMC PLANT BIOLOGY 2023; 23:204. [PMID: 37076827 PMCID: PMC10114341 DOI: 10.1186/s12870-023-04208-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/31/2023] [Indexed: 05/03/2023]
Abstract
BACKGROUND Uridine disphosphate (UDP) glycosyltransferases (UGTs) act upon a huge variety of highly diverse and complex substrates, such as phytohormones and specialized metabolites, to regulate plant growth, development, disease resistance, and environmental interactions. However, a comprehensive investigation of UGT genes in tobacco has not been conducted. RESULTS In this study, we carried out a genome-wide analysis of family-1 UDP glycosyltransferases in Nicotiana tabacum. We predicted 276 NtUGT genes, which were classified into 18 major phylogenetic subgroups. The NtUGT genes were invariably distributed among all the 24 chromosomes with structural diversity in exon/intron structure, conserved motifs, and cis-acting elements of promoters. Three groups of proteins which involved in flavonoid biosynthesis, plant growth and development, transportation and modification were identified that interact with NtUGT proteins using the PPI analysis. Expression analysis of NtUGT genes in cold stress, drought stress and different flower color using both online RNA-Seq data and the realtime PCR analysis, suggested the distinct role of NtUGT genes in resistance of cold, drought and in flavonoid biosynthesis. The enzymatic activities of seven NtUGT proteins that potentially involved in flavonoid glycosylation were analyzed, and found that all seven exhibited activity on myricetin; six (NtUGT108, NtUGT123, NtUGT141, NtUGT155, NtUGT179, and NtUGT195) showed activity on cyanidin; and three (NtUGT108, NtUGT195, and NtUGT217) were active on the flavonol aglycones kaempferol and quercetin, which catalyzing the substrates (myricetin, cyanidin or flavonol) to form new products. We further investigated the enzymatic products and enzymatic properties of NtUGT108, NtUGT195, and NtUGT217, suggested their diverse enzymatic activity toward flavonol, and NtUGT217 showed the highest catalyzed efficient toward quercetin. Overexpression of NtUGT217 significantly increase the content levels of the quercetin-3-O-glucoside, quercetin-3-O-rutinoside and kaempferol-3-O-rutinoside in transgenic tobacco leaves. CONCLUSION We identified 276 UGT genes in Nicotiana tabacum. Our study uncovered valuable information about the phylogenetic structure, distribution, genomic characters, expression patterns and enzymatic activity of NtUGT genes in tobacco. We further identified three NtUGT genes involved in flavonoid biosynthesis, and overexpressed NtUGT217 to validate its function in catalyze quercetin. The results provide key candidate NtUGT genes for future breeding of cold and drought resistance and for potential metabolic engineering of flavonoid compounds.
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Affiliation(s)
- Qing Yang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
- Qujing Tobacco Company of Yunnan Province, Qujing, 655000, China
| | - Yinchao Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Xiaoling Qu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Fengyan Wu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Xiuchun Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Min Ren
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Ying Tong
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Xiuming Wu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Aiguo Yang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China.
| | - Yong Chen
- China National Tobacco Corporation, Beijing, 100045, China.
| | - Shuai Chen
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China.
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14
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Liang S, Zhang J, Liu Y, Wen Z, Liu X, Dang F, Xie T, Wang J, Wang Z, Wu H. Study on Flavonoids and Bioactivity Features of Pericarp of Citrus reticulata "Chachi" at Different Harvest Periods. PLANTS (BASEL, SWITZERLAND) 2022; 11:3390. [PMID: 36501428 PMCID: PMC9737822 DOI: 10.3390/plants11233390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/22/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Dry mature pericarp of Citrus reticulata "Chachi" (PCR), Pericarpium Citri Reticulatae Chachiensis, is a traditional Chinese medicine that displays characteristics of different usage at different harvest times in clinical use. The corresponding changes in the bioactive components in PCR from different harvest times remain unclear. Therefore, in this study, broadly targeted metabolomics technology was used to compare the differences in bioactive components among pericarps of PCR, which are the raw material of PCR at different growth stages. In the results, 210 kinds of flavonoid metabolites were detected. The content of hesperidin in red PCR harvested in December was higher than that in Citri Reticulatae Pericarpium Viride (CRPV) and reddish PCR harvested from July to November. Furthermore, the content of nobiletin, tangeretin, and 3,3',4',5,6,7,8-heptamethoxyflavone in CRPV from July to September was higher than that in the PCR harvested at other times. In addition, the result of cluster analysis and PCA showed that CRPV harvested from July to September had an obvious grouping pattern with the reddish PCR and the red PCR harvested from October to December. Differential metabolites in six comparison groups (A1 vs. A6, A1 vs. A2, A2 vs. A3, A3 vs. A4, A4 vs. A5, A5 vs. A6) were 67, 48, 14, 51, 42, and 40, respectively. The common differential metabolite of four comparison groups was 3',4',7-trihydroxyflavone (A1 vs. A2, A2 vs. A3, A3 vs. A4, A4 vs. A5). All the flavonoid differential metabolites screened were enriched in 16 metabolic pathways. Moreover, the results of the evaluation of the total antioxidant capacity indicated that CRPV in August was a suitable raw material for the production of antioxidants. Through molecular docking, the content of potential anti-SARS-CoV-2 components in the PCR in October was higher than that in the PCR in other periods. These results further proved that PCR at different harvest times was endowed with different efficacy and usage due to the difference in the accumulation of bioactive components.
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Affiliation(s)
- Shejian Liang
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
- Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Jiongbin Zhang
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Yufang Liu
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhijia Wen
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Xinxin Liu
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Fengliang Dang
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Tianxiao Xie
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Jingxin Wang
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Zhanqian Wang
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Hong Wu
- Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Natural Medicine, College of Life Science, South China Agricultural University, Guangzhou 510642, China
- Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
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15
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Nguyen TD. Rhamnosyltransferases in Chrysanthemum: Just a spoonful of sugar helps the flavonoid-based medicines abound. PLANT PHYSIOLOGY 2022; 190:2061-2063. [PMID: 36149328 PMCID: PMC9706423 DOI: 10.1093/plphys/kiac457] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Trinh-Don Nguyen
- Department of Chemistry, Irving K. Barber Faculty of Science, University of British Columbia, Kelowna, BC, Canada
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16
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Wu QW, Wei M, Feng LF, Ding L, Wei WK, Yang JF, Lin XJ, Liang HL, Zhan RT, Ma DM. Rhamnosyltransferases involved in the biosynthesis of flavone rutinosides in Chrysanthemum species. PLANT PHYSIOLOGY 2022; 190:2122-2136. [PMID: 35947689 PMCID: PMC9706480 DOI: 10.1093/plphys/kiac371] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 07/14/2022] [Indexed: 05/06/2023]
Abstract
Linarin (acacetin-7-O-rutinoside), isorhoifolin (apigenin-7-O-rutinoside), and diosmin (diosmetin-7-O-rutinoside) are chemically and structurally similar flavone rutinoside (FR) compounds found in Chrysanthemum L. (Anthemideae, Asteraceae) plants. However, their biosynthetic pathways remain largely unknown. In this study, we cloned and compared FRs and genes encoding rhamnosyltransferases (RhaTs) among eight accessions of Chrysanthemum polyploids. We also biochemically characterized RhaTs of Chrysanthemum plants and Citrus (Citrus sinensis and Citrus maxima). RhaTs from these two genera are substrate-promiscuous enzymes catalyzing the rhamnosylation of flavones, flavanones, and flavonols. Substrate specificity analysis revealed that Chrysanthemum 1,6RhaTs preferred flavone glucosides (e.g. acacetin-7-O-glucoside), whereas Cs1,6RhaT preferred flavanone glucosides. The nonsynonymous substitutions of RhaTs found in some cytotypes of diploids resulted in the loss of catalytic function. Phylogenetic analysis and specialized pathways responsible for the biosynthesis of major flavonoids in Chrysanthemum and Citrus revealed that rhamnosylation activity might share a common evolutionary origin. Overexpression of RhaT in hairy roots resulted in 13-, 2-, and 5-fold increases in linarin, isorhoifolin, and diosmin contents, respectively, indicating that RhaT is mainly involved in the biosynthesis of linarin. Our findings not only suggest that the substrate promiscuity of RhaTs contributes to the diversity of FRs in Chrysanthemum species but also shed light on the evolution of flavone and flavanone rutinosides in distant taxa.
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Affiliation(s)
- Qing-Wen Wu
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Min Wei
- China Resources Sanjiu Medical & Pharmaceutical Co., Ltd, Shenzhen 518110, China
| | - Ling-Fang Feng
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Li Ding
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Wu-Ke Wei
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Jin-Fen Yang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Xiao-Jing Lin
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Hui-Lin Liang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- Key Laboratory of Chinese Medicinal Resource from Lingnan, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | | | - Dong-Ming Ma
- Authors for correspondence: (D.-M.M.), (R.-T.Z.)
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Akhter S, Arman MSI, Tayab MA, Islam MN, Xiao J. Recent advances in the biosynthesis, bioavailability, toxicology, pharmacology, and controlled release of citrus neohesperidin. Crit Rev Food Sci Nutr 2022; 64:5073-5092. [PMID: 36416093 DOI: 10.1080/10408398.2022.2149466] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Neohesperidin (hesperetin 7-O-neohesperidoside), a well-known flavanone glycoside widely found in citrus fruits, exhibits a variety of biological activities, with potential applications ranging from food ingredients to therapeutics. The purpose of this manuscript is to provide a comprehensive overview of the chemical, biosynthesis, and pharmacokinetics profiles of neohesperidin, as well as the therapeutic effects and mechanisms of neohesperidin against potential diseases. This literature review covers a wide range of pharmacological responses elicited by Neohesperidin, including neuroprotective, anti-inflammatory, antidiabetic, antimicrobial, and anticancer activities, with a focus on the mechanisms of those pharmacological responses. Additionally, the mechanistic pathways underlying the compound's osteoporosis, antiulcer, cardioprotective, and hepatoprotective effects have been outlined. This review includes detailed illustrations of the biosynthesis, biopharmacokinetics, toxicology, and controlled release of neohesperidine. Neohesperidin demonstrated a broad range of therapeutic and biological activities in the treatment of a variety of complex disorders, including neurodegenerative, hepato-cardiac, cancer, diabetes, obesity, infectious, allergic, and inflammatory diseases. Neohesperidin is a promising therapeutic candidate for the management of various etiologically complex diseases. However, further in vivo and in vitro studies on mechanistic potential are required before clinical trials to confirm the safety, bioavailability, and toxicity profiles of neohesperidin.
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Affiliation(s)
- Saima Akhter
- Department of Pharmacy, International Islamic University, Chittagong, Bangladesh
| | | | - Mohammed Abu Tayab
- Department of Pharmacy, International Islamic University, Chittagong, Bangladesh
| | | | - Jianbo Xiao
- Department of Analytical and Food Chemistry, Faculty of Sciences, Universidade de Vigo, Nutrition and Bromatology Group, Ourense, Spain
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18
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Singh G, Sharma S, Rawat S, Sharma RK. Plant Specialised Glycosides (PSGs): their biosynthetic enzymatic machinery, physiological functions and commercial potential. FUNCTIONAL PLANT BIOLOGY : FPB 2022; 49:1009-1028. [PMID: 36038144 DOI: 10.1071/fp21294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Plants, the primary producers of our planet, have evolved from simple aquatic life to very complex terrestrial habitat. This habitat transition coincides with evolution of enormous chemical diversity, collectively termed as 'Plant Specialised Metabolisms (PSMs)', to cope the environmental challenges. Plant glycosylation is an important process of metabolic diversification of PSMs to govern their in planta stability, solubility and inter/intra-cellular transport. Although, individual category of PSMs (terpenoids, phenylpropanoids, flavonoids, saponins, alkaloids, phytohormones, glucosinolates and cyanogenic glycosides) have been well studied; nevertheless, deeper insights of physiological functioning and genomic aspects of plant glycosylation/deglycosylation processes including enzymatic machinery (CYPs, GTs, and GHs) and regulatory elements are still elusive. Therefore, this review discussed the paradigm shift on genomic background of enzymatic machinery, transporters and regulatory mechanism of 'Plant Specialised Glycosides (PSGs)'. Current efforts also update the fundamental understanding about physiological, evolutionary and adaptive role of glycosylation/deglycosylation processes during the metabolic diversification of PSGs. Additionally, futuristic considerations and recommendations for employing integrated next-generation multi-omics (genomics, transcriptomics, proteomics and metabolomics), including gene/genome editing (CRISPR-Cas) approaches are also proposed to explore commercial potential of PSGs.
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Affiliation(s)
- Gopal Singh
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; and Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, Uttar Pradesh, India; and Present address: Department of Plant Functional Metabolomics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznan, Poland
| | - Shikha Sharma
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; and Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, Uttar Pradesh, India
| | - Sandeep Rawat
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; and Present address: G. B. Pant National Institute of Himalayan Environment and Sustainable Development, Sikkim Regional Centre, Pangthang, Gangtok 737101, Sikkim, India
| | - Ram Kumar Sharma
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; and Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, Uttar Pradesh, India
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19
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Ren C, Cao Y, Xing M, Guo Y, Li J, Xue L, Sun C, Xu C, Chen K, Li X. Genome-wide analysis of UDP-glycosyltransferase gene family and identification of members involved in flavonoid glucosylation in Chinese bayberry ( Morella rubra). FRONTIERS IN PLANT SCIENCE 2022; 13:998985. [PMID: 36226286 PMCID: PMC9549340 DOI: 10.3389/fpls.2022.998985] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/29/2022] [Indexed: 06/16/2023]
Abstract
Glycosylation was catalyzed by UDP-glycosyltransferase (UGT) and was important for enriching diversity of flavonoids. Chinese bayberry (Morella rubra) has significant nutritional and medical values because of diverse natural flavonoid glycosides. However, information of UGT gene family was quite limited in M. rubra. In the present study, a total of 152 MrUGT genes clustered into 13 groups were identified in M. rubra genome. Among them, 139 MrUGT genes were marked on eight chromosomes and 13 members located on unmapped scaffolds. Gene duplication analysis indicated that expansion of MrUGT gene family was mainly forced by tandem and proximal duplication events. Gene expression patterns in different tissues and under UV-B treatment were analyzed by transcriptome. Cyanidin 3-O-glucoside (C3Glc) and quercetin 3-O-glucoside (Q3Glc) were two main flavonoid glucosides accumulated in M. rubra. UV-B treatment significantly induced C3Glc and Q3Glc accumulation in fruit. Based on comprehensively analysis of transcriptomic data and phylogenetic homology together with flavonoid accumulation patterns, MrUFGT (MrUGT78A26) and MrUGT72B67 were identified as UDP-glucosyltransferases. MrUFGT was mainly involved in C3Glc and Q3Glc accumulation in fruit, while MrUGT72B67 was mainly involved in Q3Glc accumulation in leaves and flowers. Gln375 and Gln391 were identified as important amino acids for glucosyl transfer activity of MrUFGT and MrUGT72B67 by site-directed mutagenesis, respectively. Transient expression in Nicotiana benthamiana tested the function of MrUFGT and MrUGT72B67 as glucosyltransferases. The present study provided valuable source for identification of functional UGTs involved in secondary metabolites biosynthesis in M. rubra.
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Affiliation(s)
- Chuanhong Ren
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Yunlin Cao
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Mengyun Xing
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Yan Guo
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Jiajia Li
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Lei Xue
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Chongde Sun
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Changjie Xu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Kunsong Chen
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
| | - Xian Li
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Hangzhou, China
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20
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Yang ZY, Cao XY, Zheng XW, Wang TQ, Wang JN, Feng F, Ye CH. Biochemical, transcriptome and metabolome analysis of the pulp of Citrus sinensis (L.) Osbeck ‘Hong Jiang’ and its two variants reveal pathways regulating pulp taste, mastication, and color. ELECTRON J BIOTECHN 2022. [DOI: 10.1016/j.ejbt.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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21
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Xie L, Guo Y, Ren C, Cao Y, Li J, Lin J, Grierson D, Zhao X, Zhang B, Sun C, Chen K, Li X. Unravelling the consecutive glycosylation and methylation of flavonols in peach in response to UV-B irradiation. PLANT, CELL & ENVIRONMENT 2022; 45:2158-2175. [PMID: 35357710 DOI: 10.1111/pce.14323] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/02/2022] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
Flavonol glycosides are bioactive compounds important for plant defence and human nutrition. Glycosylation and methylation play an important role in enriching the diversity of flavonols in response to the environment. Peach flowers and fruit are rich in flavonol diglycosides such as isorhamnetin 3-O-rutinoside (I3Rut), kaempferol 3-O-rutinoside and quercetin 3-O-rutinoside, and flavonol monoglycosides such as I 3-O-glucoside and Q 3-O-galactoside. UV-B irradiation of fruit significantly induced accumulation of all these flavonol glycosides. Candidate biosynthetic genes induced by UV-B were identified by genome homology searches and the in vitro catalytic activities of purified recombinant proteins determined. PpUGT78T3 and PpUGT78A2 were identified as flavonol 3-O-glucosyltransferase and 3-O-galactosyltransferase, respectively. PpUGT91AK6 was identified as flavonol 1,6-rhamnosyl trasferase catalysing the formation of flavonol rutinosides and PpFOMT1 was identified as a flavonol O-methyltransferase that methylated Q at the 3'-OH-OH to form isorhamnetin derivatives. Transient expression in Nicotiana benthamiana confirmed the specificity of PpUGT78T3 as a flavonol 3-O-glucosyltransferase, PpUGT78A2 as a 3-O-galactosyltransferase, PpUGT91AK6 as a 1,6-rhamnosyltrasferase and PpFOMT1 as an O-methyltransferase. This study provides new insights into the mechanisms of glycosylation and methylation of flavonols, especially the formation of flavonol diglycosides such as I3Rut, and will also be useful for future potential metabolic engineering of complex flavonols.
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Affiliation(s)
- Linfeng Xie
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Yan Guo
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Chuanhong Ren
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Yunlin Cao
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Jiajia Li
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Jing Lin
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Donald Grierson
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Loughborough, UK
| | - Xiaoyong Zhao
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Bo Zhang
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Chongde Sun
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Kunsong Chen
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
| | - Xian Li
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China
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22
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Borredá C, Perez-Roman E, Talon M, Terol J. Comparative transcriptomics of wild and commercial Citrus during early ripening reveals how domestication shaped fruit gene expression. BMC PLANT BIOLOGY 2022; 22:123. [PMID: 35300613 PMCID: PMC8928680 DOI: 10.1186/s12870-022-03509-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/03/2022] [Indexed: 05/03/2023]
Abstract
BACKGROUND Interspecific hybridizations and admixtures were key in Citrus domestication, but very little is known about their impact at the transcriptomic level. To determine the effects of genome introgressions on gene expression, the transcriptomes of the pulp and flavedo of three pure species (citron, pure mandarin and pummelo) and four derived domesticated genetic admixtures (sour orange, sweet orange, lemon and domesticated mandarin) have been analyzed at color break. RESULTS Many genes involved in relevant physiological processes for domestication, such sugar/acid metabolism and carotenoid/flavonoid synthesis, were differentially expressed among samples. In the low-sugar, highly acidic species lemon and citron, many genes involved in sugar metabolism, the TCA cycle and GABA shunt displayed a reduced expression, while the P-type ATPase CitPH5 and most subunits of the vacuolar ATPase were overexpressed. The red-colored species and admixtures were generally characterized by the overexpression in the flavedo of specific pivotal genes involved in the carotenoid biosynthesis, including phytoene synthase, ζ-carotene desaturase, β-lycopene cyclase and CCD4b, a carotenoid cleavage dioxygenase. The expression patterns of many genes involved in flavonoid modifications, especially the flavonoid and phenylpropanoid O-methyltransferases showed extreme diversity. However, the most noticeable differential expression was shown by a chalcone synthase gene, which catalyzes a key step in the biosynthesis of flavonoids. This chalcone synthase was exclusively expressed in mandarins and their admixed species, which only expressed the mandarin allele. In addition, comparisons between wild and domesticated mandarins revealed that the major differences between their transcriptomes concentrate in the admixed regions. CONCLUSION In this work we present a first study providing broad evidence that the genome introgressions that took place during citrus domestication largely shaped gene expression in their fruits.
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Affiliation(s)
- Carles Borredá
- Centro de Genómica, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113, Moncada, Valencia, Spain
| | - Estela Perez-Roman
- Centro de Genómica, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113, Moncada, Valencia, Spain
| | - Manuel Talon
- Centro de Genómica, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113, Moncada, Valencia, Spain
| | - Javier Terol
- Centro de Genómica, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113, Moncada, Valencia, Spain.
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Distribution and natural variation of free, esterified, glycosylated, and insoluble-bound phenolic compounds in brocade orange (Citrus sinensis L. Osbeck) peel. Food Res Int 2022; 153:110958. [DOI: 10.1016/j.foodres.2022.110958] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 01/20/2022] [Accepted: 01/21/2022] [Indexed: 01/18/2023]
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Dai X, Shi X, Yang C, Zhao X, Zhuang J, Liu Y, Gao L, Xia T. Two UDP-Glycosyltransferases Catalyze the Biosynthesis of Bitter Flavonoid 7- O-Neohesperidoside through Sequential Glycosylation in Tea Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2354-2365. [PMID: 35133826 DOI: 10.1021/acs.jafc.1c07342] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Flavonoid glycosides are typical bitter and astringent tasting compounds that contribute to the taste of tea beverages. However, the genes that contribute to the biosynthesis of bitter compounds (e.g., flavanone 7-O-neohesperidoside) in tea plants have yet to be identified. In this study, we identified 194 UDP-glycosyltransferases (UGTs) from the tea transcriptome database. Among them, two genes, CsUGT75L12 and CsUGT79B28, encoding flavonoid 7-O-glycosyltransferase and 7-O-glucoside(1→2)rhamnosyltransferase, respectively, were identified from Camellia sinensis. In vitro, the purified recombinant enzyme rCsUGT75L12 specifically transports the glucose unit from UDP-glucose to the 7-OH position of the flavonoid to produce the respective 7-O-glucoside. rCsUGT79B28 regiospecifically transfers a rhamnose unit from UDP-rhamnose to the 2″-OH position of flavonoid 7-O-glucosides to produce flavonoid 7-O-di-glycosides. Additionally, the expression profiles of the two CsUGTs were correlated with the accumulation patterns of 7-O-glucoside and 7-O-neohesperidoside, respectively, in tea plants. These results indicated that the two CsUGTs are involved in the biosynthesis of bitter flavonoid 7-O-neohesperidoside through the sequential glucosylation and rhamnosylation of flavonoids in C. sinensis. Taken together, our findings provided not only molecular insights into flavonoid di-glycoside metabolism in tea plants but also crucial molecular markers for controlling the bitterness and astringent taste of tea.
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Affiliation(s)
- Xinlong Dai
- College of Tea Science, Guizhou University, 550025 Guiyang, Guizhou, China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, Anhui, China
| | - Xingxing Shi
- School of Life Science, Anhui Agricultural University, 230036 Hefei, Anhui, China
| | - Changli Yang
- College of Tea Science, Guizhou University, 550025 Guiyang, Guizhou, China
| | - Xinyu Zhao
- College of Tea Science, Guizhou University, 550025 Guiyang, Guizhou, China
| | - Juhua Zhuang
- College of Tea Science, Guizhou University, 550025 Guiyang, Guizhou, China
| | - Yajun Liu
- School of Life Science, Anhui Agricultural University, 230036 Hefei, Anhui, China
| | - Liping Gao
- School of Life Science, Anhui Agricultural University, 230036 Hefei, Anhui, China
| | - Tao Xia
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 230036 Hefei, Anhui, China
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Li W, Li G, Yuan Z, Li M, Deng X, Tan M, Ma Y, Chen J, Xu J. Illustration of the variation in the content of flavanone rutinosides in various citrus germplasms from genetic and enzymatic perspectives. HORTICULTURE RESEARCH 2022; 9:6510704. [PMID: 35040975 PMCID: PMC8788359 DOI: 10.1093/hr/uhab017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 07/16/2021] [Accepted: 08/30/2021] [Indexed: 06/12/2023]
Abstract
In citrus, 1,6-rhamnosytransferase (1,6RhaT) and 1,2-rhamnosytransferase (1,2RhaT) catalyze flavanone-7-O-glucosides to form nonbitter flavanone rutinosides (FRs) and bitter flavanone neohesperidosides (FNs), respectively. As revealed in this study of fruit peels from 36 citrus accessions, FRs varied from undetectable levels in pummelo and kumquat to being the dominant flavonoids in sweet orange and loose-skin mandarins. Furthermore, a previously annotated full-length 1,6RhaT-like gene was identified as another 1,6RhaT-encoding gene by in vitro experiments. In total, 28 alleles of full-length 1,6RhaTs were isolated and classified into A, B and C types with only type A alleles encoding a functional protein. Coincidently, only the accessions that contained FRs harbored type A alleles, as was further verified in two F1 hybrid populations. Moreover, the inferior substrate conversion efficiency of 1,6RhaTs in comparison with that of 1,2RhaT in vitro might partly explain the lower proportions of FRs to total flavanone disaccharides in citrus hybrids harboring both functional rhamnosyltransferases. Our findings provide a better understanding of FR content variations among citrus and are meaningful for a mechanistic illustration of citrus flavonoid metabolism and fruit quality improvement practices.
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Affiliation(s)
- Wenyun Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, No.1 Shizishan Street,
Hongshan District, Wuhan 430070, China
- Guizhou Fruit Institute, Guizhou Academy of Agricultural Sciences, No.1 Jinnong Road, Huaxi District, Guiyang 550006, China
| | - Gu Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, No.1 Shizishan Street,
Hongshan District, Wuhan 430070, China
| | - Ziyu Yuan
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, No.1 Shizishan Street,
Hongshan District, Wuhan 430070, China
| | - Mingyue Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, No.1 Shizishan Street,
Hongshan District, Wuhan 430070, China
| | - Xiuxin Deng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, No.1 Shizishan Street,
Hongshan District, Wuhan 430070, China
| | - Meilian Tan
- The Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, No.2 Xudong Second Road, Wuchang District, Wuhan 430062, China
| | - Yuhua Ma
- Guizhou Fruit Institute, Guizhou Academy of Agricultural Sciences, No.1 Jinnong Road, Huaxi District, Guiyang 550006, China
| | - Jiajing Chen
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, No.1 Shizishan Street,
Hongshan District, Wuhan 430070, China
| | - Juan Xu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, No.1 Shizishan Street,
Hongshan District, Wuhan 430070, China
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Zhang J, Zhang J, Kaliaperumal K, Zhong B. Variations of the chemical composition of Citrus sinensis Osbeck cv. Newhall fruit in relation to the symptom severity of Huanglongbing. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2021.104269] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Utilization and evaluation of Citrus natsudaidai peel waste as a source of natural food additives. Food Chem 2021; 373:131464. [PMID: 34741966 DOI: 10.1016/j.foodchem.2021.131464] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/30/2021] [Accepted: 10/21/2021] [Indexed: 12/11/2022]
Abstract
This study aims to obtain beneficial ingredients from Citrus natsudaidai (CN) peel waste. The yields of ingredients were 26.2-31.6 mg/g dried material (DM) in pectin, 466-581 mg/g DM in insoluble dietary fiber, 5.56-7.15 g/kg fresh material (FM) in the hexane extracts obtained from CN peels, 23.8-27.0 mg/g DM in naringin, and 8.30-10.2 mg/g DM in neohesperidin. A sensory evaluation and instrumental assays using an Electronic nose and Electronic tongue were performed to evaluate aqueous solutions flavored with 0.02% hexane extracts obtained from CN peels. CN-flavored solutions had a preferred smell over commercial citrus-flavored drinks and were classified into the same group as commercial citrus juices in the Electronic nose assay. In addition, CN-flavored solutions showed sourness, bitterness, and orange-like taste, and the overall acceptance of CN-flavored solutions did not significantly differ from commercial citrus-flavored drinks. CN peel waste can be industrially utilized as a source of natural food additives.
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Chen J, Li G, Zhang H, Yuan Z, Li W, Peng Z, Shi M, Ding W, Zhang H, Cheng Y, Yao JL, Xu J. Primary Bitter Taste of Citrus is Linked to a Functional Allele of the 1,2-Rhamnosyltransferase Gene Originating from Citrus grandis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:9869-9882. [PMID: 34410124 DOI: 10.1021/acs.jafc.1c01211] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
1,2-Rhamnosyltransferase (1,2RhaT) catalyzes the final step of production of flavanone neohesperidoside (FNH) that is responsible for the primary bitter taste of citrus fruits. In this study, species-specific flavonoid profiles were determined in 87 Citrus accessions by identifying eight main flavanone glycosides (FGs). Accumulation of FNHs was completely correlated to the presence of the 1,2RhaT gene in 87 citrus accessions analyzed using a novel 1,2RhaT-specific DNA marker. Pummelo (Citrus grandis) was identified as the genetic origin for a function allele of 1,2RhaT that underpinned FNH-bitterness in modern citrus cultivars. In addition, genes encoding six MYB and five bHLH transcription factors were shown to coexpress with 1,2RhaT and other flavonoid pathway genes related to FNH accumulation, indicating that these transcription factors may affect the fruit taste of citrus. This study provides a better understanding of bitterness formation in Citrus varieties and a genetic marker for the early selection of nonbitterness lines in citrus breeding programs.
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Affiliation(s)
- Jiajing Chen
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Gu Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Haipeng Zhang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Ziyu Yuan
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Wenyun Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Zhaoxin Peng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Meiyan Shi
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Wenyu Ding
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Huixian Zhang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Yunjiang Cheng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Jia-Long Yao
- The New Zealand Institute for Plant & Food Research Limited, Private Bag 92169, Auckland 1142, New Zealand
| | - Juan Xu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, P. R. China
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Structural modeling of two plant UDP-dependent sugar-sugar glycosyltransferases reveals a conserved glutamic acid residue that is a hallmark for sugar acceptor recognition. J Struct Biol 2021; 213:107777. [PMID: 34391905 DOI: 10.1016/j.jsb.2021.107777] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 06/29/2021] [Accepted: 08/04/2021] [Indexed: 12/17/2022]
Abstract
Glycosylation is one of the common modifications of plant metabolites, playing a major role in the chemical/biological diversity of a wide range of compounds. Plant metabolite glycosylation is catalyzed almost exclusively by glycosyltransferases, mainly by Uridine-diphosphate dependent Glycosyltransferases (UGTs). Several X-ray structures have been determined for primary glycosyltransferases, however, little is known regarding structure-function aspects of sugar-sugar/branch-forming O-linked UGTs (SBGTs) that catalyze the transfer of a sugar from the UDP-sugar donor to an acceptor sugar moiety of a previously glycosylated metabolite substrate. In this study we developed novel insights into the structural basis for SBGT catalytic activity by modelling the 3d-structures of two enzymes; a rhamnosyl-transferase Cs1,6RhaT - that catalyzes rhamnosylation of flavonoid-3-glucosides and flavonoid-7-glucosides and a UGT94D1 - that catalyzes glucosylation of (+)-Sesaminol 2-O-β-d-glucoside at the C6 of the primary sugar moiety. Based on these structural models and docking studies a glutamate (E290 or E268 in Cs1,6RhaT or UGT94D1, respectively) and a tryptophan (W28 or W15 in Cs1,6RhaT or UGT94D1, respectively) appear to interact with the sugar acceptor and are suggested to be important for the recognition of the sugar-moiety of the acceptor-substrate. Functional analysis of substitution mutants for the glutamate and tryptophan residues in Cs1,6RhaT further support their role in determining sugar-sugar/branch-forming GT specificity. Phylogenetic analysis of the UGT family in plants demonstrates that the glutamic-acid residue is a hallmark of SBGTs that is entirely absent from the corresponding position in primary UGTs.
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Fernie AR, Alseekh S, Liu J, Yan J. Using precision phenotyping to inform de novo domestication. PLANT PHYSIOLOGY 2021; 186:1397-1411. [PMID: 33848336 PMCID: PMC8260140 DOI: 10.1093/plphys/kiab160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 03/22/2021] [Indexed: 05/09/2023]
Abstract
An update on the use of precision phenotyping to assess the potential of lesser cultivated species as candidates for de novo domestication or similar development for future agriculture.
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Affiliation(s)
- Alisdair R Fernie
- Max Planck Institute for Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Centre of Plant Systems Biology and Biotechnology, 4000 Plovdiv, Bulgaria
| | - Saleh Alseekh
- Max Planck Institute for Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Centre of Plant Systems Biology and Biotechnology, 4000 Plovdiv, Bulgaria
| | - Jie Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, Hubei, China
| | - Jianbing Yan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, Hubei, China
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31
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Jiang N, Dillon FM, Silva A, Gomez-Cano L, Grotewold E. Rhamnose in plants - from biosynthesis to diverse functions. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 302:110687. [PMID: 33288005 DOI: 10.1016/j.plantsci.2020.110687] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 05/27/2023]
Abstract
In plants, the deoxy sugar l-rhamnose is widely present as rhamnose-containing polymers in cell walls and as part of the decoration of various specialized metabolites. Here, we review the current knowledge on the distribution of rhamnose, highlighting the differences between what is known in dicotyledoneuos compared to commelinid monocotyledoneous (grasses) plants. We discuss the biosynthesis and transport of UDP-rhamnose, as well as the transfer of rhamnose from UDP-rhamnose to various primary and specialized metabolites. This is carried out by rhamnosyltransferases, enzymes that can use a large variety of substrates. Some unique characteristics of rhamnose synthases, the multifunctional enzymes responsible for the conversion of UDP-glucose into UDP-rhamnose, are considered, particularly from the perspective of their ability to convert glucose present in flavonoids. Finally, we discuss how little is still known with regards to how plants rescue rhamnose from the many compounds to which it is linked, or how rhamnose is catabolized.
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Affiliation(s)
- Nan Jiang
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Francisco M Dillon
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Alexander Silva
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Lina Gomez-Cano
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Erich Grotewold
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA.
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32
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Wu B, Liu X, Xu K, Zhang B. Genome-wide characterization, evolution and expression profiling of UDP-glycosyltransferase family in pomelo (Citrus grandis) fruit. BMC PLANT BIOLOGY 2020; 20:459. [PMID: 33028214 PMCID: PMC7542425 DOI: 10.1186/s12870-020-02655-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/20/2020] [Indexed: 05/31/2023]
Abstract
BACKGROUND Pomelo is one of the three major species of citrus. The fruit accumulates a variety of abundant secondary metabolites that affect the flavor. UDP-glycosyltransferases (UGTs) are involved in the glycosylation of secondary metabolites. RESULTS In the present study, we performed a genome-wide analysis of pomelo UGT family, a total of 145 UGTs was identified based on the conserved plant secondary product glycosyltransferase (PSPG) motif. These UGT genes were clustered into 16 major groups through phylogenetic analysis of these genes with other plant UGTs (A-P). Pomelo UGTs were distributed unevenly among the chromosomes. At least 10 intron insertion events were observed in these UGT genome sequences, and I-5 was identified to be the highest conserved one. The expression profile analysis of pomelo UGT genes in different fruit tissues during development and ripening was carried out by RNA-seq. CONCLUSIONS We identified 145 UGTs in pomelo fruit through transcriptome data and citrus genome database. Our research provides available information on UGTs studies in pomelo, and provides an important research foundation for screening and identification of functional UGT genes.
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Affiliation(s)
- Boping Wu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Xiaohong Liu
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology / Laboratory of Fruit Quality Biology, Zhejiang University, Hangzhou, 310058, China
| | - Kai Xu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China.
| | - Bo Zhang
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology / Laboratory of Fruit Quality Biology, Zhejiang University, Hangzhou, 310058, China.
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33
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Lu Y, Li D, Li L, Belwal T, Xu Y, Lin X, Duan Z, Luo Z. Effects of elevated CO2 on pigment metabolism of postharvest mandarin fruit for degreening. Food Chem 2020; 318:126462. [DOI: 10.1016/j.foodchem.2020.126462] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 02/14/2020] [Accepted: 02/20/2020] [Indexed: 11/26/2022]
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34
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Alseekh S, Perez de Souza L, Benina M, Fernie AR. The style and substance of plant flavonoid decoration; towards defining both structure and function. PHYTOCHEMISTRY 2020; 174:112347. [PMID: 32203741 DOI: 10.1016/j.phytochem.2020.112347] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 03/11/2020] [Accepted: 03/12/2020] [Indexed: 05/19/2023]
Abstract
Over 8000 different flavonoids have been described and a considerable number of new flavonoid structures are being elucidated every year. The advent of metabolomics alongside the development of phytochemical genetics - wherein the genetic basis underlying the regulation of the levels of plant metabolites is determined - has provided a massive boost to such efforts. That said our understanding of the individual function(s) of the vast majority of the metabolites that constitute this important class of phytochemicals remains unknown. Here we review what is known concerning the major decorative modifications of flavonoids in plants, namely hydroxylation, glycosylation, methylation and acylation. Our major focus is with regard to the in planta function of these modified compounds, however, we also highlight the demonstrated bioactive roles which they possess. We additionally performed a comprehensive survey of the flavonoids listed in the KNApSAcK database in order to assess the frequency of occurrence of each type of flavonoid modification. We conclude that whilst considerable research has been carried out regarding the biological roles of flavonoids most studies to date have merely provided information on the compound class or sub-classes thereof as a whole with too little currently known on the specific role of individual metabolites. We, therefore, finally suggest a framework based on currently available tools by which the relative importance of the individual compounds can be assessed under various biological conditions in order to fill this knowledge-gap.
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Affiliation(s)
- Saleh Alseekh
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany; Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria
| | - Leonardo Perez de Souza
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Maria Benina
- Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany; Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria.
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35
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Kianersi F, Abdollahi MR, Mirzaie-Asl A, Dastan D, Rasheed F. Identification and tissue-specific expression of rutin biosynthetic pathway genes in Capparis spinosa elicited with salicylic acid and methyl jasmonate. Sci Rep 2020; 10:8884. [PMID: 32483287 PMCID: PMC7264309 DOI: 10.1038/s41598-020-65815-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 05/07/2020] [Indexed: 11/10/2022] Open
Abstract
Capparis spinosa is an edible medicinal plant which is considered as an excellent source of rutin. Rutin is a glycoside of the flavonoid quercetin that has been reported to have a beneficial role in controlling various diseases such as hypertension, arteriosclerosis, diabetes, and obesity. In this study, the partial cDNA of four genes involved in the rutin biosynthetic pathway including 4-coumaroyl CoA ligase (4CL), flavonoid 3′-hydroxylase (F3′H), flavonol synthase (FLS) and flavonol-3-O-glucoside L-rhamnosyltransferase (RT) were identified in C.spinosa plants for the first time. The protein sequences of these genes shared high similarity with the same proteins in other plant species. Subsequently, the expression patterns of these genes as well as rutin accumulation in C.spinosa leaves treated with different concentrations of salicylic acid (SA) and methyl jasmonate (MeJA) and also in different tissues of Caper plants treated with 100 mgL−1 SA and 150 μM MeJA were evaluated. The expression of all four genes was clearly up-regulated and rutin contents increased in response to MeJA and SA treatments after 24 h. The highest rutin contents (5.30 mgg−1 DW and 13.27 mgg−1 DW), as well as the highest expression levels of all four genes, were obtained using 100 mgL−1 SA and 150 μM MeJA, respectively. Among the different tissues, the highest rutin content was observed in young leaves treated with 150 μM MeJA, which corresponded to the expression of related genes, especially RT, as a key gene in the rutin biosynthetic pathway. These results suggest that rutin content in various tissues of C. spinosa can be enhanced to a significant extent by MeJA and SA treatments and the gene expression patterns of rutin-biosynthesis-related genes are regulated by these elicitors.
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Affiliation(s)
- Farzad Kianersi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
| | - Mohammad Reza Abdollahi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
| | - Asghar Mirzaie-Asl
- Department of Plant Biotechnology, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
| | - Dara Dastan
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.,Department of Pharmacognosy and Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Faiza Rasheed
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Växtskyddsvägen 1, SE-230 53, Alnarp, Sweden.,KTH Royal Institute of Technology, School of Chemical Science and Engineering, Fibre and Polymer Technology, SE-100 44, Stockholm, Sweden
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36
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Shakour ZTA, Fayek NM, Farag MA. How do biocatalysis and biotransformation affect Citrus dietary flavonoids chemistry and bioactivity? A review. Crit Rev Biotechnol 2020; 40:689-714. [DOI: 10.1080/07388551.2020.1753648] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Zeinab T. Abdel Shakour
- Laboratory of Phytochemistry, National Organization for Drug Control and Research, Cairo, Egypt
| | - Nesrin M. Fayek
- Department of Pharmacognosy, College of Pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed A. Farag
- Department of Pharmacognosy, College of Pharmacy, Cairo University, Cairo, Egypt
- Chemistry Department, School of Sciences and Engineering, The American University in Cairo, Cairo, Egypt
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37
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Ono E, Waki T, Oikawa D, Murata J, Shiraishi A, Toyonaga H, Kato M, Ogata N, Takahashi S, Yamaguchi MA, Horikawa M, Nakayama T. Glycoside-specific glycosyltransferases catalyze regio-selective sequential glucosylations for a sesame lignan, sesaminol triglucoside. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 101:1221-1233. [PMID: 31654577 DOI: 10.1111/tpj.14586] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/07/2019] [Accepted: 10/16/2019] [Indexed: 05/10/2023]
Abstract
Sesame (Sesamum indicum) seeds contain a large number of lignans, phenylpropanoid-related plant specialized metabolites. (+)-Sesamin and (+)-sesamolin are major hydrophobic lignans, whereas (+)-sesaminol primarily accumulates as a water-soluble sesaminol triglucoside (STG) with a sugar chain branched via β1→2 and β1→6-O-glucosidic linkages [i.e. (+)-sesaminol 2-O-β-d-glucosyl-(1→2)-O-β-d-glucoside-(1→6)-O-β-d-glucoside]. We previously reported that the 2-O-glucosylation of (+)-sesaminol aglycon and β1→6-O-glucosylation of (+)-sesaminol 2-O-β-d-glucoside (SMG) are mediated by UDP-sugar-dependent glucosyltransferases (UGT), UGT71A9 and UGT94D1, respectively. Here we identified a distinct UGT, UGT94AG1, that specifically catalyzes the β1→2-O-glucosylation of SMG and (+)-sesaminol 2-O-β-d-glucosyl-(1→6)-O-β-d-glucoside [termed SDG(β1→6)]. UGT94AG1 was phylogenetically related to glycoside-specific glycosyltransferases (GGTs) and co-ordinately expressed with UGT71A9 and UGT94D1 in the seeds. The role of UGT94AG1 in STG biosynthesis was further confirmed by identification of a STG-deficient sesame mutant that predominantly accumulates SDG(β1→6) due to a destructive insertion in the coding sequence of UGT94AG1. We also identified UGT94AA2 as an alternative UGT potentially involved in sugar-sugar β1→6-O-glucosylation, in addition to UGT94D1, during STG biosynthesis. Yeast two-hybrid assays showed that UGT71A9, UGT94AG1, and UGT94AA2 were found to interact with a membrane-associated P450 enzyme, CYP81Q1 (piperitol/sesamin synthase), suggesting that these UGTs are components of a membrane-bound metabolon for STG biosynthesis. A comparison of kinetic parameters of these UGTs further suggested that the main β-O-glucosylation sequence of STG biosynthesis is β1→2-O-glucosylation of SMG by UGT94AG1 followed by UGT94AA2-mediated β1→6-O-glucosylation. These findings together establish the complete biosynthetic pathway of STG and shed light on the evolvability of regio-selectivity of sequential glucosylations catalyzed by GGTs.
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Affiliation(s)
- Eiichiro Ono
- Suntory Global Innovation Center (SIC) Ltd., Research Institute, Soraku-gun, Kyoto, 619-0284, Japan
| | - Toshiyuki Waki
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | - Daiki Oikawa
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | - Jun Murata
- Suntory Bioorganic Research Institute (SUNBOR), Suntory Foundation for Life Sciences, Soraku-gun, Kyoto, 619-0284, Japan
| | - Akira Shiraishi
- Suntory Bioorganic Research Institute (SUNBOR), Suntory Foundation for Life Sciences, Soraku-gun, Kyoto, 619-0284, Japan
| | - Hiromi Toyonaga
- Suntory Global Innovation Center (SIC) Ltd., Research Institute, Soraku-gun, Kyoto, 619-0284, Japan
| | - Masako Kato
- National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8517, Japan
| | - Naoki Ogata
- National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8517, Japan
| | - Seiji Takahashi
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | | | - Manabu Horikawa
- Suntory Bioorganic Research Institute (SUNBOR), Suntory Foundation for Life Sciences, Soraku-gun, Kyoto, 619-0284, Japan
| | - Toru Nakayama
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
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38
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Kang GG, Francis N, Hill R, Waters D, Blanchard C, Santhakumar AB. Dietary Polyphenols and Gene Expression in Molecular Pathways Associated with Type 2 Diabetes Mellitus: A Review. Int J Mol Sci 2019; 21:ijms21010140. [PMID: 31878222 PMCID: PMC6981492 DOI: 10.3390/ijms21010140] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 02/07/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a complex metabolic disorder with various contributing factors including genetics, epigenetics, environment and lifestyle such as diet. The hallmarks of T2DM are insulin deficiency (also referred to as β-cell dysfunction) and insulin resistance. Robust evidence suggests that the major mechanism driving impaired β-cell function and insulin signalling is through the action of intracellular reactive oxygen species (ROS)-induced stress. Chronic high blood glucose (hyperglycaemia) and hyperlipidaemia appear to be the primary activators of these pathways. Reactive oxygen species can disrupt intracellular signalling pathways, thereby dysregulating the expression of genes associated with insulin secretion and signalling. Plant-based diets, containing phenolic compounds, have been shown to exhibit remedial benefits by ameliorating insulin secretion and insulin resistance. The literature also provides evidence that polyphenol-rich diets can modulate the expression of genes involved in insulin secretion, insulin signalling, and liver gluconeogenesis pathways. However, whether various polyphenols and phenolic compounds can target specific cellular signalling pathways involved in the pathogenesis of T2DM has not been elucidated. This review aims to evaluate the modulating effects of various polyphenols and phenolic compounds on genes involved in cellular signalling pathways (both in vitro and in vivo from human, animal and cell models) leading to the pathogenesis of T2DM.
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Affiliation(s)
- Gideon Gatluak Kang
- Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Wagga Wagga, NSW 2650, Australia; (G.G.K.); (N.F.); (D.W.); (C.B.)
- School of Biomedical Sciences, Charles Sturt University, NSW 2650, Australia;
| | - Nidhish Francis
- Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Wagga Wagga, NSW 2650, Australia; (G.G.K.); (N.F.); (D.W.); (C.B.)
- School of Animal and Veterinary Sciences, Charles Sturt University, NSW 2650, Australia
| | - Rodney Hill
- School of Biomedical Sciences, Charles Sturt University, NSW 2650, Australia;
| | - Daniel Waters
- Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Wagga Wagga, NSW 2650, Australia; (G.G.K.); (N.F.); (D.W.); (C.B.)
- School of Biomedical Sciences, Charles Sturt University, NSW 2650, Australia;
| | - Christopher Blanchard
- Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Wagga Wagga, NSW 2650, Australia; (G.G.K.); (N.F.); (D.W.); (C.B.)
- School of Biomedical Sciences, Charles Sturt University, NSW 2650, Australia;
| | - Abishek Bommannan Santhakumar
- Australian Research Council (ARC) Industrial Transformation Training Centre (ITTC) for Functional Grains, Graham Centre for Agricultural Innovation, Wagga Wagga, NSW 2650, Australia; (G.G.K.); (N.F.); (D.W.); (C.B.)
- School of Biomedical Sciences, Charles Sturt University, NSW 2650, Australia;
- Correspondence: ; Tel.: +61-2-6933-2678
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Citrus Taste Modification Potentials by Genetic Engineering. Int J Mol Sci 2019; 20:ijms20246194. [PMID: 31817978 PMCID: PMC6940753 DOI: 10.3390/ijms20246194] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/25/2019] [Accepted: 12/04/2019] [Indexed: 12/22/2022] Open
Abstract
Citrus fruits are mainly consumed as fresh fruit and processed juice products. They serve as nutritional and a tasty diet in our daily life. However, the formidable bitterness and delayed bitterness significantly impact the citrus industry attributable to the two major bitter compounds naringin and limonin. The extremely sour and acidic also negatively affects the sensory quality of citrus products. Citrus breeding programs have developed different strategies to improve citrus quality and a wealth of studies have aimed to uncover the genetic and biochemical basis of citrus flavor. In this minireview, we outline the major genes characterized to be involved in pathways shaping the sweet, bitter, or sour taste in citrus, and discuss briefly about the possible approaches to modify citrus taste by genetic engineering.
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Louveau T, Osbourn A. The Sweet Side of Plant-Specialized Metabolism. Cold Spring Harb Perspect Biol 2019; 11:cshperspect.a034744. [PMID: 31235546 DOI: 10.1101/cshperspect.a034744] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Glycosylation plays a major role in the structural diversification of plant natural products. It influences the properties of molecules by modifying the reactivity and solubility of the corresponding aglycones, so influencing cellular localization and bioactivity. Glycosylation of plant natural products is usually carried out by uridine diphosphate(UDP)-dependent glycosyltransferases (UGTs) belonging to the carbohydrate-active enzyme glycosyltransferase 1 (GT1) family. These enzymes transfer sugars from UDP-activated sugar moieties to small hydrophobic acceptor molecules. Plant GT1s generally show high specificity for their sugar donors and recognize a single UDP sugar as their substrate. In contrast, they are generally promiscuous with regard to acceptors, making them attractive biotechnological tools for small molecule glycodiversification. Although microbial hosts have traditionally been used for heterologous engineering of plant-derived glycosides, transient plant expression technology offers a potentially disruptive platform for rapid characterization of new plant glycosyltransferases and biosynthesis of complex glycosides.
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Affiliation(s)
- Thomas Louveau
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, United Kingdom
| | - Anne Osbourn
- Department of Metabolic Biology, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, United Kingdom
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41
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Irmisch S, Jancsik S, Yuen MMS, Madilao LL, Bohlmann J. Biosynthesis of the anti-diabetic metabolite montbretin A: glucosylation of the central intermediate mini-MbA. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 100:879-891. [PMID: 31400245 PMCID: PMC6899944 DOI: 10.1111/tpj.14493] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 05/16/2023]
Abstract
Type 2 diabetes (T2D) affects over 320 million people worldwide. Healthy lifestyles, improved drugs and effective nutraceuticals are different components of a response against the growing T2D epidemic. The specialized metabolite montbretin A (MbA) is being developed for treatment of T2D and obesity due to its unique pharmacological activity as a highly effective and selective inhibitor of the human pancreatic α-amylase. MbA is an acylated flavonol glycoside found in small amounts in montbretia (Crocosmia × crocosmiiflora) corms. MbA cannot be obtained in sufficient quantities for drug development from its natural source or by chemical synthesis. To overcome these limitations through metabolic engineering, we are investigating the genes and enzymes of MbA biosynthesis. We previously reported the first three steps of MbA biosynthesis from myricetin to myricetin 3-O-(6'-O-caffeoyl)-glucosyl rhamnoside (mini-MbA). Here, we describe the sequence of reactions from mini-MbA to MbA, and the discovery and characterization of the gene and enzyme responsible for the glucosylation of mini-MbA. The UDP-dependent glucosyltransferase CcUGT3 (UGT703E1) catalyzes the 1,2-glucosylation of mini-MbA to produce myricetin 3-O-(glucosyl-6'-O-caffeoyl)-glucosyl rhamnoside. Co-expression of CcUGT3 with genes for myricetin and mini-MbA biosynthesis in Nicotiana benthamiana validated its biological function and expanded the set of genes available for metabolic engineering of MbA.
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Affiliation(s)
- Sandra Irmisch
- Michael Smith LaboratoriesUniversity of British Columbia2185 East MallVancouverBCV6T 1Z4Canada
| | - Sharon Jancsik
- Michael Smith LaboratoriesUniversity of British Columbia2185 East MallVancouverBCV6T 1Z4Canada
| | - Macaire M. S. Yuen
- Michael Smith LaboratoriesUniversity of British Columbia2185 East MallVancouverBCV6T 1Z4Canada
| | - Lufiani L. Madilao
- Michael Smith LaboratoriesUniversity of British Columbia2185 East MallVancouverBCV6T 1Z4Canada
| | - Jörg Bohlmann
- Michael Smith LaboratoriesUniversity of British Columbia2185 East MallVancouverBCV6T 1Z4Canada
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Wang S, Alseekh S, Fernie AR, Luo J. The Structure and Function of Major Plant Metabolite Modifications. MOLECULAR PLANT 2019; 12:899-919. [PMID: 31200079 DOI: 10.1016/j.molp.2019.06.001] [Citation(s) in RCA: 193] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/27/2019] [Accepted: 06/04/2019] [Indexed: 05/23/2023]
Abstract
Plants produce a myriad of structurally and functionally diverse metabolites that play many different roles in plant growth and development and in plant response to continually changing environmental conditions as well as abiotic and biotic stresses. This metabolic diversity is, to a large extent, due to chemical modification of the basic skeletons of metabolites. Here, we review the major known plant metabolite modifications and summarize the progress that has been achieved and the challenges we are facing in the field. We focus on discussing both technical and functional aspects in studying the influences that various modifications have on biosynthesis, degradation, transport, and storage of metabolites, as well as their bioactivity and toxicity. Finally, we discuss some emerging insights into the evolution of metabolic pathways and metabolite functionality.
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Affiliation(s)
- Shouchuang Wang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, College of Tropical Crops, Hainan University, Haikou 572208, China
| | - Saleh Alseekh
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm 14476, Germany; Centre of Plant Systems Biology and Biotechnology, Plovdiv 4000, Bulgaria
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm 14476, Germany; Centre of Plant Systems Biology and Biotechnology, Plovdiv 4000, Bulgaria.
| | - Jie Luo
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, College of Tropical Crops, Hainan University, Haikou 572208, China; National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China.
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Chen J, Yuan Z, Zhang H, Li W, Shi M, Peng Z, Li M, Tian J, Deng X, Cheng Y, Deng CH, Xie Z, Zeng J, Yao JL, Xu J. Cit1,2RhaT and two novel CitdGlcTs participate in flavor-related flavonoid metabolism during citrus fruit development. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:2759-2771. [PMID: 30840066 PMCID: PMC6506761 DOI: 10.1093/jxb/erz081] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 02/14/2019] [Indexed: 05/19/2023]
Abstract
Neohesperidosides are disaccharides that are present in some flavonoids and impart a bitter taste, which can significantly affect the commercial value of citrus fruits. In this study, we identified three flavonoid-7-O-di-glucosyltransferase (dGlcT) genes closely related to 1,2-rhamnosyltransferase (1,2RhaT) in citrus genomes. However, only 1,2RhaT was directly linked to the accumulation of neohesperidoside, as demonstrated by association analysis of 50 accessions and co-segregation analysis of an F1 population derived from Citrus reticulata × Poncirus trifoliata. In transgenic tobacco BY2 cells, over-expression of CitdGlcTs resulted in flavonoid-7-O-glucosides being catalysed into bitterless flavonoid-7-O-di-glucosides, whereas over-expression of Cit1,2RhaT converted the same substrate into bitter-tasting flavonoid-7-O-neohesperidoside. Unlike 1,2RhaT, during citrus fruit development the dGlcTs showed an opposite expression pattern to CHS and CHI, two genes encoding rate-limiting enzymes of flavonoid biosynthesis. An uncoupled availability of dGlcTs and substrates might result in trace accumulation of flavonoid-7-O-di-glucosides in the fruit of C. maxima (pummelo). Past human selection of the deletion and functional mutation of 1,2RhaT has led step-by-step to the evolution of the flavor-related metabolic network in citrus. Our research provides the basis for potentially improving the taste in citrus fruit through manipulation of the network by knocking-out 1,2RhaT or by enhancing the expression of dGlcT using genetic transformation.
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Affiliation(s)
- Jiajing Chen
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Ziyu Yuan
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Haipeng Zhang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Wenyun Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
- Guizhou Fruit Institute, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou Province, China
| | - Meiyan Shi
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Zhaoxin Peng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Mingyue Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Jing Tian
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Xiuxin Deng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Yunjiang Cheng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Cecilia Hong Deng
- The New Zealand Institute for Plant & Food Research Limited, Private Bag, Auckland, New Zealand
| | - Zongzhou Xie
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
| | - Jiwu Zeng
- Guangdong Fruit Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong Province, China
| | - Jia-Long Yao
- The New Zealand Institute for Plant & Food Research Limited, Private Bag, Auckland, New Zealand
- Correspondence: or
| | - Juan Xu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, PR China
- Correspondence: or
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Fayek NM, Farag MA, Abdel Monem AR, Moussa MY, Abd-Elwahab SM, El-Tanbouly ND. Comparative Metabolite Profiling of Four Citrus Peel Cultivars via Ultra-Performance Liquid Chromatography Coupled with Quadrupole-Time-of-Flight-Mass Spectrometry and Multivariate Data Analyses. J Chromatogr Sci 2019; 57:349-360. [PMID: 30796772 DOI: 10.1093/chromsci/bmz006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 10/22/2018] [Indexed: 12/19/2022]
Abstract
Citrus plants are one of the most economical fruit bearing trees grown worldwide for their medicinal use as well as for the flavor and food industry. This study attempts to characterize the metabolome difference in polyphenols of four Citrus species fruit peels; C. reticulata Blanco cv. Egyptian, C. sinensis (L.) Osbeck cv. Olinda Valencia, C. aurantiifolia Swingle cv. Mexican and C. paradisi Macfad. cv. Duncan via ultra-performance liquid chromatography coupled with quadrupole-time-of-flight-mass spectrometry platform. A total of 163 metabolites were characterized of which 28 were detected for the first time in Citrus cultivars including eight coumarin derivatives, three cinnamic acids conjugates, one polymethoxyflavone, 5 O-glycosides, 2 C-glycosides, three flavone-di-O-glucosides and six acetyl sugar derivatives of luteolin and kaempferol in addition to oxygenated and methylated fatty acids. Flavonoids amounted for the most abundant secondary metabolites class in the studied Citrus peels. The relative variability among these Citrus peels was estimated using clustering analysis with flavonoids accounting for cvs. segregation. Hierarchical clustering analysis revealed the chemical similarity of C. reticulata, C. sinensis and C. paradise peels and being distant them from that of C. aurantiifolia. To the best of our knowledge, this study provides the first report for metabolite compositional differences in these four Citrus peels.
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Affiliation(s)
- Nesrin M Fayek
- Department of Pharmacognosy, Faculty of pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed A Farag
- Department of Pharmacognosy, Faculty of pharmacy, Cairo University, Cairo, Egypt.,Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, New Cairo, Egypt
| | - Azza R Abdel Monem
- Department of Pharmacognosy, Faculty of pharmacy, Cairo University, Cairo, Egypt
| | - Mohamed Y Moussa
- Department of Pharmacognosy, Faculty of pharmacy, Cairo University, Cairo, Egypt
| | - Samia M Abd-Elwahab
- Department of Pharmacognosy, Faculty of pharmacy, Cairo University, Cairo, Egypt
| | - Nebal D El-Tanbouly
- Department of Pharmacognosy, Faculty of pharmacy, Cairo University, Cairo, Egypt
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45
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Nadi R, Golein B, Gómez-Cadenas A, Arbona V. Developmental Stage- and Genotype-Dependent Regulation of Specialized Metabolite Accumulation in Fruit Tissues of Different Citrus Varieties. Int J Mol Sci 2019; 20:ijms20051245. [PMID: 30871051 PMCID: PMC6429498 DOI: 10.3390/ijms20051245] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/07/2019] [Accepted: 03/07/2019] [Indexed: 11/16/2022] Open
Abstract
Flavor traits in citrus are the result of a blend of low molecular weight metabolites including sugars, acids, flavonoids and limonoids, these latter being mainly responsible for the characteristic bitter flavor in citrus. In this work, the genotype- and developmental stage-dependent accumulation of flavonoids and limonoids is addressed. To fulfill this goal, three models for citrus bitterness: bitter Duncan grapefruit, bittersweet Thomson orange and sweet Wase mandarin were selected from a total of eight different varieties. Compounds were annotated from LC/ESI-QqTOF-MS non-targeted metabolite profiles from albedo and pulp tissues. Results indicated that the specific blend of compounds providing the characteristic flavor trait is genotype-specific and hence under genetic control, but it is also regulated at the developmental level. Metabolite profiles in albedo mirrored those found in pulp, the edible part of the fruit, despite differences in the concentration and accumulation/depletion rates being found. This is particularly relevant for polymethoxylated flavones and glycosylated limonoids that showed a clear partitioning towards albedo and pulp tissues, respectively. Fruit ripening was characterized by a reduction in flavonoids and the accumulation of limonoid glycosides. However, bitter grapefruit showed higher levels of limonin A-ring lactone and naringin in contrast to sweeter orange and mandarin. Data indicated that the accumulation profile was compound class-specific and conserved among the studied varieties despite differing in the respective accumulation and/or depletion rate, leading to different specialized metabolite concentration at the full ripe stage, consistent with the flavor trait output.
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Affiliation(s)
- Roya Nadi
- Faculty of Agriculture, Tabriz University of Tabriz, Tabriz 5166616471, Iran.
| | - Behrouz Golein
- Citrus and Subtropical Fruits Research Center, Ramsar 4691733113, Iran.
| | - Aurelio Gómez-Cadenas
- Department de Ciències Agràries i del Medi Natural, Universitat Jaume I, 12071 Castelló de la Plana, Spain.
| | - Vicent Arbona
- Department de Ciències Agràries i del Medi Natural, Universitat Jaume I, 12071 Castelló de la Plana, Spain.
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Abstract
Based on many cell culture, animal and human studies, it is well known that the most challenge issue for developing polyphenolics as chemoprevention or anti-diabtetic agents is the low oral bioavailability, which may be the major reason relating to its ambiguous therapeutic effects and large inter-individual variations in clinical trials. This review intends to highlight the unscientific evaluation on the basis of the published data regarding in vitro bioactivity of polyphenols, which may sometimes mislead the researchers and to conclude that: first, bio-accessibilities values obtained in the studies for polyphenols should be highly reconsidered in accordance with the abundant newly identified circulating and excreted metabolites, with a particular attention to colonic metabolic products which are obviously contributing much more than expected to their absorptions; second, it is phenolic metabolites, which are formed in the small intestine and hepatic cells,low molecular weight catabolic products of the colonic microflora to travel around the human body in the circulatory system or reach body tissues to elicit bioactive effects. It is concluded that better performed in vivo intervention and in vitro mechanistic studies are needed to fully understand how these molecules interact with human physiological and pathological processes.
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Affiliation(s)
- Hui Teng
- a College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , Fujian , China
| | - Lei Chen
- a College of Food Science , Fujian Agriculture and Forestry University , Fuzhou , Fujian , China
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47
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Abstract
Phenolic compounds are a group of secondary plant metabolites, many with health-promoting properties that are present in all parts of plants. They have an aromatic structure, including either one or more hydroxyl groups giving them the ability to stabilize free radicals and protect biological tissues against damage related to reactive oxygen species. Phenolic compounds are concentrated in the fruit of plants, and therefore, the fruit can be an important dietary source of these phytochemicals, which exist as monomers, or bound to one another. Polyphenolic compounds are classified into different subclasses based upon the number of phenol ring systems that they contain, saturation, and length of the carbon chain that bind the rings to one another. The phenolic acids present in fruit tissues protect the plant against disease, infections, UV radiation, and insect damage. For this reason, the beneficiary effects of phenolic compounds are continually being investigated for their health-promoting properties and for meeting increased consumer demand for healthy nutritious food. Due to the functional properties of polyphenolic compounds, there is increased interest on improving extraction, separation, and quantification techniques of these valuable bioactive compounds, so they can be used as value-added ingredients in foods, pharmaceuticals, and cosmetics. This review provides information on the most advanced methods available for the analysis of phenolics in fruits.
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Koja E, Ohata S, Maruyama Y, Suzuki H, Shimosaka M, Taguchi G. Identification and characterization of a rhamnosyltransferase involved in rutin biosynthesis in Fagopyrum esculentum (common buckwheat). Biosci Biotechnol Biochem 2018; 82:1790-1802. [DOI: 10.1080/09168451.2018.1491286] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
ABSTRACT
Rutin, a 3-rutinosyl quercetin, is a representative flavonoid distributed in many plant species, and is highlighted for its therapeutic potential. In this study, we purified uridine diphosphate-rhamnose: quercetin 3-O-glucoside 6″-O-rhamnosyltransferase and isolated the corresponding cDNA (FeF3G6″RhaT) from seedlings of common buckwheat (Fagopyrum esculentum). The recombinant FeF3G6″RhaT enzyme expressed in Escherichia coli exhibited 6″-O-rhamnosylation activity against flavonol 3-O-glucoside and flavonol 3-O-galactoside as substrates, but showed only faint activity against flavonoid 7-O-glucosides. Tobacco cells expressing FeF3G6″RhaT converted the administered quercetin into rutin, suggesting that FeF3G6″RhaT can function as a rhamnosyltransferase in planta. Quantitative PCR analysis on several organs of common buckwheat revealed that accumulation of FeF3G6″RhaT began during the early developmental stages of rutin-accumulating organs, such as flowers, leaves, and cotyledons. These results suggest that FeF3G6″RhaT is involved in rutin biosynthesis in common buckwheat.
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Affiliation(s)
- Eiki Koja
- Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
| | - Soichiro Ohata
- Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
| | - Yoshinori Maruyama
- Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
| | - Hideyuki Suzuki
- Department of Research and Development, Kazusa DNA Research Institute, Kisarazu, Japan
| | - Makoto Shimosaka
- Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
| | - Goro Taguchi
- Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan
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Dai X, Zhao G, Jiao T, Wu Y, Li X, Zhou K, Gao L, Xia T. Involvement of Three CsRHM Genes from Camellia sinensis in UDP-Rhamnose Biosynthesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7139-7149. [PMID: 29916708 DOI: 10.1021/acs.jafc.8b01870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
UDP-Rhamnose synthase (RHM), the branch-point enzyme controlling the nucleotide sugar interconversion pathway, converts UDP-d-glucose into UDP-rhamnose. As a rhamnose residue donor, UDP-l-rhamnose is essential for the biosynthesis of pectic polysaccharides and secondary metabolites in plants. In this study, three CsRHM genes from tea plants ( Camellia sinensis) were cloned and characterized. Enzyme assays showed that three recombinant proteins displayed RHM activity and were involved in the biosynthesis of UDP-rhamnose in vitro. The transcript profiles, metabolite profiles, and mucilage location suggest that the three CsRHM genes likely contribute to UDP-rhamnose biosynthesis and may be involved in primary wall formation in C. sinensis. These analyses of CsRHM genes and metabolite profiles provide a comprehensive understanding of secondary metabolite biosynthesis and regulation in tea plants. Moreover, our results can be applied for the synthesis of the secondary metabolite rhamnoside in future studies.
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Affiliation(s)
- Xinlong Dai
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei , Anhui 230036 , China
- School of Life Science , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Guifu Zhao
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Tianming Jiao
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Yingling Wu
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Xinmin Li
- School of Life Science , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Kang Zhou
- School of Life Science , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Liping Gao
- School of Life Science , Anhui Agricultural University , Hefei , Anhui 230036 , China
| | - Tao Xia
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei , Anhui 230036 , China
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50
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Huang FC, Giri A, Daniilidis M, Sun G, Härtl K, Hoffmann T, Schwab W. Structural and Functional Analysis of UGT92G6 Suggests an Evolutionary Link Between Mono- and Disaccharide Glycoside-Forming Transferases. PLANT & CELL PHYSIOLOGY 2018; 59:857-870. [PMID: 29444327 DOI: 10.1093/pcp/pcy028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 01/30/2018] [Indexed: 05/05/2023]
Abstract
Glycosylation mediated by UDP-dependent glycosyltransferase (UGT) is one of the most common reactions for the biosynthesis of small molecule glycosides. As glycosides have various biological roles, we characterized UGT genes from grapevine (Vitis vinifera). In silico analysis of VvUGT genes that were highly expressed in leaves identified UGT92G6 which showed sequence similarity to both monosaccharide and disaccharide glucoside-forming transferases. The recombinant UGT92G6 glucosylated phenolics, among them caffeic acid, carvacrol, eugenol and raspberry ketone, and also accepted geranyl glucoside and citronellyl glucoside. Thus, UGT92G6 formed mono- and diglucosides in vitro from distinct compounds. The enzyme specificity constant Vmax/Km ratios indicated that UGT92G6 exhibited the highest specificity towards caffeic acid, producing almost equal amounts of the 3- and 4-O-glucoside. Transient overexpression of UGT92G6 in Nicotiana benthamiana leaves confirmed the production of caffeoyl glucoside; however, the level of geranyl diglucoside was not elevated upon overexpression of UGT92G6, even after co-expression of genes encoding geraniol synthase and geraniol UGT to provide sufficient precursor. Comparative sequence and 3-D structure analysis identified a sequence motif characteristic for monoglucoside-forming UGTs in UGT92G6, suggesting an evolutionary link between mono- and disaccharide glycoside UGTs. Thus, UGT92G6 functions as a mono- and diglucosyltransferase in vitro, but acts as a caffeoyl glucoside UGT in N. benthamiana.
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Affiliation(s)
- Fong-Chin Huang
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, D-85354 Freising, Germany
| | - Ashok Giri
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, D-85354 Freising, Germany
- Plant Molecular Biology Unit, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, MS 411 008, India
| | - Melina Daniilidis
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, D-85354 Freising, Germany
| | - Guangxin Sun
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, D-85354 Freising, Germany
| | - Katja Härtl
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, D-85354 Freising, Germany
| | - Thomas Hoffmann
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, D-85354 Freising, Germany
| | - Wilfried Schwab
- Biotechnology of Natural Products, Technische Universität München, Liesel-Beckmann-Str. 1, D-85354 Freising, Germany
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