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Li J, Liu X, Zhu X, Liu J, Zhang L, Ahmed N, Qi J, Chen B, Tang D, Yu J, Fan Z, Jiang H. Biochemical synthesis of taxanes from mevalonate. Synth Syst Biotechnol 2024; 9:694-700. [PMID: 38868609 PMCID: PMC11166602 DOI: 10.1016/j.synbio.2024.05.002] [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: 02/08/2024] [Revised: 04/22/2024] [Accepted: 05/06/2024] [Indexed: 06/14/2024] Open
Abstract
Taxanes are kinds of diterpenoids with important bioactivities, such as paclitaxel (taxol®) is an excellent natural broad-spectrum anticancer drug. Attempts to biosynthesize taxanes have made with limited success, mainly due to the bottleneck of the low efficiency catalytic elements. In this study, we developed an artificial synthetic system to produce taxanes from mevalonate (MVA) by coupling biological and chemical methods, which comprises in vitro multi-enzyme catalytic module, chemical catalytic module and yeast cell catalytic module. Through optimizing in vitro multienzyme catalytic system, the yield of taxadiene was increased to 946.7 mg/L from MVA within 8 h and the productivity was 14.2-fold higher than microbial fermentation. By incorporating palladium catalysis, the conversion rate of Taxa-4(20),11(12)-dien-5α-yl acetate (T5α-AC) reached 48 %, effectively addressing the product promiscuity and the low yield rate of T5αOH. Finally, we optimized the expression of T10βOH in yeast resulting in the biosynthesis of Taxa-4(20),11(12)-dien-5α-acetoxy-10β-ol(T5α-AC-10β-ol) at a production of 15.8 mg/L, which displayed more than 2000-fold higher than that produced by co-culture fermentation strategy. These technologies offered a promising new approach for efficient synthesis of taxanes.
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Affiliation(s)
- Jing Li
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
| | - Xiaonan Liu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoxi Zhu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiayu Liu
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
| | - Lei Zhang
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
| | - Nida Ahmed
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian Qi
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bihuan Chen
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
| | - Daliang Tang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Jinsheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huifeng Jiang
- Key Laboratory of Engineering Biology for Low-carbon Manufacturing, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
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Wang H, Guo D, Zhang M, Wu G, Shi Y, Zhou J, Ding N, Chen X, Li X. Correlation study on microbial communities and volatile flavor compounds in cigar tobacco leaves of diverse origins. Appl Microbiol Biotechnol 2024; 108:236. [PMID: 38407656 PMCID: PMC10896874 DOI: 10.1007/s00253-024-13032-6] [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: 08/28/2023] [Revised: 01/21/2024] [Accepted: 01/25/2024] [Indexed: 02/27/2024]
Abstract
To elucidate the significant influence of microorganisms on geographically dependent flavor formation by analyzing microbial communities and volatile flavor compounds (VFCs) in cigar tobacco leaves (CTLs) obtained from China, Dominica, and Indonesia. Microbiome analysis revealed that the predominant bacteria in CTLs were Staphylococcus, Aerococcus, Pseudomonas, and Lactobacillus, while the predominant fungi were Aspergillus, Wallemia, and Sampaiozyma. The microbial communities of CTLs from different origins differed to some extent, and the diversity and abundance of bacteria were greater than fungi. Metabolomic analysis revealed that 64 VFCs were identified, mainly ketones, of which 23 VFCs could be utilized to identify the geographical origins of CTLs. Sixteen VFCs with OAV greater than 1, including cedrol, phenylacetaldehyde, damascone, beta-damascone, and beta-ionone, play important roles in shaping the flavor profile of CTLs from different origins. Combined with the correlation analysis, bacterial microorganisms were more closely related to key VFCs and favored a positive correlation. Bacillus, Vibrio, and Sphingomonas were the main flavor-related bacteria. The study demonstrated that the predominant microorganisms were essential for the formation of key flavor qualities in CTLs, which provided a theoretical reference for flavor control of CTLs by microbial technology. KEY POINTS: • It is the high OAV VFCs that determine the flavor profile of CTLs. • The methylerythritol phosphate (MEP) pathway and the carotenoid synthesis pathway are key metabolic pathways for the formation of VFCs in CTLs. • Microbial interactions influence tobacco flavor, with bacterial microorganisms contributing more to the flavor formation of CTLs.
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Affiliation(s)
- Haiqing Wang
- Anhui Fermented Food Engineering Research Center, School of Food and Biological Engineering, Hefei University of Technology, Danxia Road 485#, 230601, Hefei City, Anhui Province, People's Republic of China
| | - Dongfeng Guo
- China Tobacco Anhui Industrial Co., Ltd, Huangshan Road 606#, 230088, Hefe City, Anhui Province, People's Republic of China.
| | - Mingzhu Zhang
- Anhui Fermented Food Engineering Research Center, School of Food and Biological Engineering, Hefei University of Technology, Danxia Road 485#, 230601, Hefei City, Anhui Province, People's Republic of China
| | - Guanglong Wu
- Anhui Fermented Food Engineering Research Center, School of Food and Biological Engineering, Hefei University of Technology, Danxia Road 485#, 230601, Hefei City, Anhui Province, People's Republic of China
| | - Yaqi Shi
- China Tobacco Anhui Industrial Co., Ltd, Huangshan Road 606#, 230088, Hefe City, Anhui Province, People's Republic of China
| | - Jinglong Zhou
- China Tobacco Anhui Industrial Co., Ltd, Huangshan Road 606#, 230088, Hefe City, Anhui Province, People's Republic of China
| | - Naihong Ding
- China Tobacco Anhui Industrial Co., Ltd, Huangshan Road 606#, 230088, Hefe City, Anhui Province, People's Republic of China
| | - Xiangsong Chen
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei City, 230009, Anhui Province, People's Republic of China
| | - Xingjiang Li
- Anhui Fermented Food Engineering Research Center, School of Food and Biological Engineering, Hefei University of Technology, Danxia Road 485#, 230601, Hefei City, Anhui Province, People's Republic of China.
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Xie L, Luo Z, Jia X, Mo C, Huang X, Suo Y, Cui S, Zang Y, Liao J, Ma X. Synthesis of Crocin I and Crocin II by Multigene Stacking in Nicotiana benthamiana. Int J Mol Sci 2023; 24:14139. [PMID: 37762441 PMCID: PMC10532124 DOI: 10.3390/ijms241814139] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/04/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Crocins are a group of highly valuable water-soluble carotenoids that are reported to have many pharmacological activities, such as anticancer properties, and the potential for treating neurodegenerative diseases including Alzheimer's disease. Crocins are mainly biosynthesized in the stigmas of food-medicine herbs Crocus sativus L. and Gardenia jasminoides fruits. The distribution is narrow in nature and deficient in resources, which are scarce and expensive. Recently, the synthesis of metabolites in the heterologous host has opened up the potential for large-scale and sustainable production of crocins, especially for the main active compounds crocin I and crocin II. In this study, GjCCD4a, GjALDH2C3, GjUGT74F8, and GjUGT94E13 from G. jasminoides fruits were expressed in Nicotiana benthamiana. The highest total content of crocins in T1 generation tobacco can reach 78,362 ng/g FW (fresh weight) and the dry weight is expected to reach 1,058,945 ng/g DW (dry weight). Surprisingly, the primary effective constituents crocin I and crocin II can account for 99% of the total crocins in transgenic plants. The strategy mentioned here provides an alternative platform for the scale-up production of crocin I and crocin II in tobacco.
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Affiliation(s)
- Lei Xie
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China; (L.X.); (Z.L.); (X.J.); (S.C.); (Y.Z.)
| | - Zuliang Luo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China; (L.X.); (Z.L.); (X.J.); (S.C.); (Y.Z.)
| | - Xunli Jia
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China; (L.X.); (Z.L.); (X.J.); (S.C.); (Y.Z.)
| | - Changming Mo
- Guangxi Crop Genetic Improvement and Biotechnology Lab, Guangxi Academy of Agricultural Science, Nanning 530007, China;
| | - Xiyang Huang
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China;
| | - Yaran Suo
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China;
| | - Shengrong Cui
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China; (L.X.); (Z.L.); (X.J.); (S.C.); (Y.Z.)
| | - Yimei Zang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China; (L.X.); (Z.L.); (X.J.); (S.C.); (Y.Z.)
| | - Jingjing Liao
- State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, Artemisinin Research Center, and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China;
| | - Xiaojun Ma
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China; (L.X.); (Z.L.); (X.J.); (S.C.); (Y.Z.)
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Du B, Sun M, Hui W, Xie C, Xu X. Recent Advances on Key Enzymes of Microbial Origin in the Lycopene Biosynthesis Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12927-12942. [PMID: 37609695 DOI: 10.1021/acs.jafc.3c03942] [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: 08/24/2023]
Abstract
Lycopene is a common carotenoid found mainly in ripe red fruits and vegetables that is widely used in the food industry due to its characteristic color and health benefits. Microbial synthesis of lycopene is gradually replacing the traditional methods of plant extraction and chemical synthesis as a more economical and productive manufacturing strategy. The biosynthesis of lycopene is a typical multienzyme cascade reaction, and it is important to understand the characteristics of each key enzyme involved and how they are regulated. In this paper, the catalytic characteristics of the key enzymes involved in the lycopene biosynthesis pathway and related studies are first discussed in detail. Then, the strategies applied to the key enzymes of lycopene synthesis, including fusion proteins, enzyme screening, combinatorial engineering, CRISPR/Cas9-based gene editing, DNA assembly, and scaffolding technologies are purposefully illustrated and compared in terms of both traditional and emerging multienzyme regulatory strategies. Finally, future developments and regulatory options for multienzyme synthesis of lycopene and similar secondary metabolites are also discussed.
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Affiliation(s)
- Bangmian Du
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210046, Jiangsu Province, China
| | - Mengjuan Sun
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210046, Jiangsu Province, China
| | - Wenyang Hui
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210046, Jiangsu Province, China
| | - Chengjia Xie
- School of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou 225127, Jiangsu Province, China
| | - Xian Xu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210046, Jiangsu Province, China
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Wang Q, Hu J, Lou T, Li Y, Shi Y, Hu H. Integrated agronomic, physiological, microstructure, and whole-transcriptome analyses reveal the role of biomass accumulation and quality formation during Se biofortification in alfalfa. FRONTIERS IN PLANT SCIENCE 2023; 14:1198847. [PMID: 37546260 PMCID: PMC10400095 DOI: 10.3389/fpls.2023.1198847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/12/2023] [Indexed: 08/08/2023]
Abstract
Se-biofortified agricultural products receive considerable interest due to the worldwide severity of selenium (Se) deficiency. Alfalfa (Medicago sativa L.), the king of forage, has a large biomass, a high protein content, and a high level of adaptability, making it a good resource for Se biofortification. Analyses of agronomic, quality, physiological, and microstructure results indicated the mechanism of biomass increase and quality development in alfalfa during Se treatment. Se treatment effectively increased Se content, biomass accumulation, and protein levels in alfalfa. The enhancement of antioxidant capacity contributes to the maintenance of low levels of reactive oxygen species (ROS), which, in turn, serves to increase alfalfa's stress resistance and the stability of its intracellular environment. An increase in the rate of photosynthesis contributes to the accumulation of biomass in alfalfa. To conduct a more comprehensive investigation of the regulatory networks induced by Se treatment, the transcriptome sequencing of non-coding RNA (ncRNA) was employed to compare 100 mg/kg Se treatment and control groups. The analysis identified 1,414, 62, and 5 genes as DE-long non-coding RNAs (DE-lncRNA), DE-microRNAs (DE-miRNA), and DE-circular RNA (DE-circRNA), respectively. The function of miRNA-related regulatory networks during Se biofortification in alfalfa was investigated. Subsequent enrichment analysis revealed significant involvement of transcription factors, DNA replication and repair mechanisms, photosynthesis, carbohydrate metabolism, and protein processing. The antioxidant capacity and protein accumulation of alfalfa were regulated by the modulation of signal transduction, the glyoxalase pathway, proteostasis, and circRNA/lncRNA-related regulatory networks. The findings offer new perspectives on the regulatory mechanisms of Se in plant growth, biomass accumulation, and stress responses, and propose potential strategies for enhancing its utilization in the agricultural sector.
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Affiliation(s)
- Qingdong Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, Henan, China
| | - Jinke Hu
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, Henan, China
| | - Tongbo Lou
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, Henan, China
| | - Yan Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, Henan, China
| | - Yuhua Shi
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, Henan, China
| | - Huafeng Hu
- Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, Henan, China
- Henan Grass and Animal Engineering Technology Research Center, Zhengzhou, Henan, China
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Dong C, Wang Z, Qin L, Zhang C, Cao L, Li H, Ma X. Overexpression of Geranyl Diphosphate Synthase 1 (NnGGPPS1) From Nelumbo nucifera Enhances Carotenoid and Chlorophyll Content and Biomass. Gene 2023; 881:147645. [PMID: 37453723 DOI: 10.1016/j.gene.2023.147645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/01/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
As the traditional herb with pharmacological compounds in China, the key genes related with terpenoid biosynthesis are still unveiled in Nelumbo nucifera. Geranylgeranyl pyrophosphate synthase (GGPPS) is one of the key enzymes in terpenoids biosynthesis, synthesizing the common precursor of GGPP for downstream enzymes for generating various terpenoids. In this study, four NnGGPPS genes were isolated from N. nucifera. Sequence and phylogenetic analyses indicate that NnGGPPS1 and NnGGPPS2 belong to large subunit (LSU). Whereas NnGGPPS3 and NnGGPPS4 are classified as small subunit (SSU) of SSU Ⅱ and SSU I, respectively. Among four NnGGPPSs, only NnGGPPS1 and NnGGPPS2 can produce GGPP in bacterial pigment complementation assay. Combination analysis of subcellular localization and gene co-expression analysis (GCN) illustrates that NnGGPPS1 is the main transcript related with methylerythritol phosphate (MEP) pathway, abscisic acid (ABA) biosynthesis, carotenoid and chlorophyll biosynthesis and degradation. Overexpression of NnGGPPS1 improves the growth of transgenic tobacco, and increases carotenoids and chlorophyll contents. Moreover, NnGGPPS1 transgenic tobacco exhibits improved photosynthesis efficiency and ROS scavenging ability. The up-regulated expression of the key genes in MEP pathway, carotenoid biosynthesis and chlorophyll biosynthesis, result in the increase of metabolic flux in NnGGPPS1 transgenic lines. Furthermore, the elevated MEP-derived primary metabolites of carotenoid and chlorophyll was attributed to enhancement of plant biomass of NnGGPPS1 transgenic lines. Therefore, NnGGPPS1 plays a vital role in biosynthesis of carotenoid and chlorophyll.
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Affiliation(s)
- Chen Dong
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China.
| | - Zhiwen Wang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China
| | - Lili Qin
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China
| | - Chen Zhang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China
| | - Longyun Cao
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China
| | - Haifeng Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China
| | - Xintian Ma
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China
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Zhang X, Wang X, Zhang Y, Wang F, Zhang C, Li X. Development of isopentenyl phosphate kinases and their application in terpenoid biosynthesis. Biotechnol Adv 2023; 64:108124. [PMID: 36863457 DOI: 10.1016/j.biotechadv.2023.108124] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/20/2023] [Accepted: 02/26/2023] [Indexed: 03/04/2023]
Abstract
As the largest class of natural products, terpenoids (>90,000) have multiple biological activities and a wide range of applications (e.g., pharmaceutical, agricultural, personal care and food industries). Therefore, the sustainable production of terpenoids by microorganisms is of great interest. Microbial terpenoid production depends on two common building blocks: isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP). In addition to the natural biosynthetic pathways, mevalonate and methyl-D-erythritol-4-phosphate pathways, IPP and DMAPP can be produced through the conversion of isopentenyl phosphate and dimethylallyl monophosphate by isopentenyl phosphate kinases (IPKs), offering an alternative route for terpenoid biosynthesis. This review summarizes the properties and functions of various IPKs, novel IPP/DMAPP synthesis pathways involving IPKs, and their applications in terpenoid biosynthesis. Furthermore, we have discussed strategies to exploit novel pathways and unleash their potential for terpenoid biosynthesis.
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Affiliation(s)
- Xinyi Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xun Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yu Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Fei Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Congqiang Zhang
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.
| | - Xun Li
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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Shi S, Chang Y, Yu J, Chen H, Wang Q, Bi Y. Identification and Functional Analysis of Two Novel Genes-Geranylgeranyl Pyrophosphate Synthase Gene ( AlGGPPS) and Isopentenyl Pyrophosphate Isomerase Gene ( AlIDI)-from Aurantiochytrium limacinum Significantly Enhance De Novo β-Carotene Biosynthesis in Escherichia coli. Mar Drugs 2023; 21:md21040249. [PMID: 37103388 PMCID: PMC10141969 DOI: 10.3390/md21040249] [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: 03/13/2023] [Revised: 04/12/2023] [Accepted: 04/16/2023] [Indexed: 04/28/2023] Open
Abstract
Precursor regulation has been an effective strategy to improve carotenoid production and the availability of novel precursor synthases facilitates engineering improvements. In this work, the putative geranylgeranyl pyrophosphate synthase encoding gene (AlGGPPS) and isopentenyl pyrophosphate isomerase encoding gene (AlIDI) from Aurantiochytrium limacinum MYA-1381 were isolated. We applied the excavated AlGGPPS and AlIDI to the de novo β-carotene biosynthetic pathway in Escherichia coli for functional identification and engineering application. Results showed that the two novel genes both functioned in the synthesis of β-carotene. Furthermore, AlGGPPS and AlIDI performed better than the original or endogenous one, with 39.7% and 80.9% increases in β-carotene production, respectively. Due to the coordinated expression of the 2 functional genes, β-carotene content of the modified carotenoid-producing E. coli accumulated a 2.99-fold yield of the initial EBIY strain in 12 h, reaching 10.99 mg/L in flask culture. This study helped to broaden current understanding of the carotenoid biosynthetic pathway in Aurantiochytrium and provided novel functional elements for carotenoid engineering improvements.
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Affiliation(s)
- Shitao Shi
- School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Yi Chang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Jinhui Yu
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Hui Chen
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Qiang Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Yuping Bi
- School of Life Sciences, Shandong University, Qingdao 266237, China
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
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Chen Y, Niu S, Deng X, Song Q, He L, Bai D, He Y. Genome-wide association study of leaf-related traits in tea plant in Guizhou based on genotyping-by-sequencing. BMC PLANT BIOLOGY 2023; 23:196. [PMID: 37046207 PMCID: PMC10091845 DOI: 10.1186/s12870-023-04192-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Studying the genetic characteristics of tea plant (Camellia spp.) leaf traits is essential for improving yield and quality through breeding and selection. Guizhou Plateau, an important part of the original center of tea plants, has rich genetic resources. However, few studies have explored the associations between tea plant leaf traits and single nucleotide polymorphism (SNP) markers in Guizhou. RESULTS In this study, we used the genotyping-by-sequencing (GBS) method to identify 100,829 SNP markers from 338 accessions of tea germplasm in Guizhou Plateau, a region with rich genetic resources. We assessed population structure based on high-quality SNPs, constructed phylogenetic relationships, and performed genome-wide association studies (GWASs). Four inferred pure groups (G-I, G-II, G-III, and G-IV) and one inferred admixture group (G-V), were identified by a population structure analysis, and verified by principal component analyses and phylogenetic analyses. Through GWAS, we identified six candidate genes associated with four leaf traits, including mature leaf size, texture, color and shape. Specifically, two candidate genes, located on chromosomes 1 and 9, were significantly associated with mature leaf size, while two genes, located on chromosomes 8 and 11, were significantly associated with mature leaf texture. Additionally, two candidate genes, located on chromosomes 1 and 2 were identified as being associated with mature leaf color and mature leaf shape, respectively. We verified the expression level of two candidate genes was verified using reverse transcription quantitative polymerase chain reaction (RT-qPCR) and designed a derived cleaved amplified polymorphism (dCAPS) marker that co-segregated with mature leaf size, which could be used for marker-assisted selection (MAS) breeding in Camellia sinensis. CONCLUSIONS In the present study, by using GWAS approaches with the 338 tea accessions population in Guizhou, we revealed a list of SNPs markers and candidate genes that were significantly associated with four leaf traits. This work provides theoretical and practical basis for the genetic breeding of related traits in tea plant leaves.
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Affiliation(s)
- Yanjun Chen
- College of Tea Science / Tea Engineering Technology Research Center, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
| | - Suzhen Niu
- College of Tea Science / Tea Engineering Technology Research Center, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Institute of Agro-Bioengineering, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
| | - Xinyue Deng
- School of Architecture, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
| | - Qinfei Song
- College of Tea Science / Tea Engineering Technology Research Center, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
| | - Limin He
- College of Tea Science / Tea Engineering Technology Research Center, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
| | - Dingchen Bai
- College of Tea Science / Tea Engineering Technology Research Center, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
| | - Yingqin He
- College of Tea Science / Tea Engineering Technology Research Center, Guizhou University, Guiyang, 550025 Guizhou Province People’s Republic of China
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10
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Fu W, Zheng X, Chen X, Wang W, Liu A, Ji J, Wang G, Guan C. The potential roles of carotenoids in enhancing phytoremediation of bisphenol A contaminated soil by promoting plant physiology and modulating rhizobacterial community of tobacco. CHEMOSPHERE 2023; 316:137807. [PMID: 36634717 DOI: 10.1016/j.chemosphere.2023.137807] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/31/2022] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
The widespread occurrence of bisphenol A (BPA), a typical endocrine-disrupting compound, poses potential threat to ecosystem and public health. Carotenoids are essential natural pigments, playing important roles in photosynthesis and antioxidant defense of plants. This study aimed to verify the value of carotenoids in enhancing plant tolerance to BPA stress and improving phytoremediation efficiency of tobacco (Nicotiana tabacum L.), through exogenous application of β-carotene (a typical carotenoid) and endogenous upregulation of carotenoids by overexpression of β-carotene hydroxylase (chyb) gene in tobacco. The results demonstrated that exogenous applied β-carotene alleviated the toxic effects of BPA exposure (100 mg kg-1) on wild-type (WT) tobacco plants after being cultivated for 40 d, reflecting by the increase of biomass (201.2%), chlorophyll content (27.5%) and the decrease of malondialdehyde (MDA) content (70.7%). Similar with the results of exogenous application of β-carotene, chyb gene overexpressing tobacco showed less phytotoxicity exposed to BPA, through enhancing photosynthetic efficiency (42.1%) and reducing reactive oxygen species (ROS) production (18%). Notably, about 94.8% BPA in contaminated soil was removed under the cultivation of transgenic tobacco for 40 d, however, only 82.7% was removed in that of WT tobacco. Moreover, transgenic tobacco is beneficial for the growth of plant roots, thus upregulating the abundance of bacteria contributing to BPA degradation or soil nutrient cycling (e.g., Proteobacteria, Acidobacteria, Actinobacteria, Sphingomonas and MND1), which might further help to enhance plant growth and improve BPA removal efficiency in soil. This study extended our understanding of the possible mechanisms of carotenoids-involved alleviation of BPA stress in tobacco, providing a novel strategy to improve phytoremediation efficiency of plants in BPA contaminated soil.
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Affiliation(s)
- Wenting Fu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Xiaoyan Zheng
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Xiancao Chen
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Wenjing Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Anran Liu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Jing Ji
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Gang Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Chunfeng Guan
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
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11
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Dong C, Zhang M, Song S, Wei F, Qin L, Fan P, Shi Y, Wang X, Wang R. A Small Subunit of Geranylgeranyl Diphosphate Synthase Functions as an Active Regulator of Carotenoid Synthesis in Nicotiana tabacum. Int J Mol Sci 2023; 24:ijms24020992. [PMID: 36674507 PMCID: PMC9863795 DOI: 10.3390/ijms24020992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 01/07/2023] Open
Abstract
As one of the most imperative antioxidants in higher plants, carotenoids serve as accessory pigments to harvest light for photosynthesis and photoprotectors for plants to adapt to high light stress. Here, we report a small subunit (SSU) of geranylgeranyl diphosphate synthase (GGPPS) in Nicotiana tabacum, NtSSU II, which takes part in the regulation carotenoid biosynthesis by forming multiple enzymatic components with NtGGPPS1 and downstream phytoene synthase (NtPSY1). NtSSU II transcript is widely distributed in various tissues and stimulated by low light and high light treatments. The confocal image revealed that NtSSU II was localized in the chloroplast. Bimolecular fluorescence complementation (BiFC) indicated that NtSSU II and NtGGPPS1 formed heterodimers, which were able to interact with phytoene synthase (NtPSY1) to channel GGPP into the carotenoid production. CRISPR/Cas9-induced ntssu II mutant exhibited decreased leaf area and biomass, along with a decline in carotenoid and chlorophyll accumulation. Moreover, the genes involved in carotenoid biosynthesis were also downregulated in transgenic plants of ntssu II mutant. Taken together, the newly identified NtSSU II could form multiple enzymatic components with NtGGPPS1 and NtPSY1 to regulate carotenoid biosynthesis in N. tabacum, in addition to the co-expression of genes in carotenoids biosynthetic pathways.
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Affiliation(s)
- Chen Dong
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Mei Zhang
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Shanshan Song
- College of Tobacco Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Fang Wei
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Lili Qin
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Puqing Fan
- College of Tobacco Science, Henan Agricultural University, Zhengzhou 450002, China
| | - Yongchun Shi
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Xiaoran Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Ran Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
- Correspondence:
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12
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Wang Q, Hu J, Hu H, Li Y, Xiang M, Wang D. Integrated eco-physiological, biochemical, and molecular biological analyses of selenium fortification mechanism in alfalfa. PLANTA 2022; 256:114. [PMID: 36370252 DOI: 10.1007/s00425-022-04027-6] [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: 02/02/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Foliar Se (IV) application at 100 mg/kg can act as a positive bio-stimulator of redox, photosynthesis, and nutrient metabolism in alfalfa via phenotypes, nutritional compositions, biochemistry, combined with transcriptome analysis. Selenium (Se) is an essential element for mammals, and plants are the primary source of dietary Se. However, Se usually has dual (beneficial/toxic) effects on the plant itself. Alfalfa (Medicago sativa L.) is one of the most important forage resources in the world due to its high nutritive value. In this study, we have investigated the effects of sodium selenite (Se (IV)) (0, 100, 200, 300, and 500 mg/kg) on eco-physiological, biochemical, and transcriptional mechanisms in alfalfa. The phenotypic and nutritional composition alterations revealed that lower Se (IV) (100 mg/kg) levels positively affected alfalfa; it enhanced the antioxidant activity, which may contribute to redox homeostasis and chloroplast function. At 100 mg/kg Se (IV) concentration, the H2O2, and malondialdehyde (MDA) contents decreased by 36.72% and 22.62%, respectively, whereas the activity of glutathione peroxidase (GPX) increased by 31.10%. Se supplementation at 100 mg/kg increased the plant pigments contents, the light-harvesting capacity of PSII (Fv/Fm) and PSI (ΔP700max), and the carbon fixation efficiency, which was demonstrated by enhanced photosynthesis (37.6%). Furthermore, alfalfa shifted carbon flux to protein synthesis to improve quality at 100 mg/kg of Se (IV) by upregulating carbohydrate and amino acid metabolic genes. On the contrary, at 500 mg/kg, Se (IV) became toxic. Higher Se (IV) disordered the plant antioxidant system, increasing H2O2 and MDA by 14.2 and 4.3%, respectively. Moreover, photosynthesis was inhibited by 20.2%, and more structural substances, such as lignin, were synthesized. These results strongly suggest that Se (IV) at a concentration of 100 mg/kg act as the positive bio-stimulator of redox metabolism, photosynthesis, and nutrient in alfalfa.
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Affiliation(s)
- Qingdong Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, 450001, Henan, China
- Henan Grass and Animal Engineering Technology Research Center, Zhengzhou, 450046, Henan, China
| | - Jinke Hu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, 450001, Henan, China
- Henan Grass and Animal Engineering Technology Research Center, Zhengzhou, 450046, Henan, China
| | - Huafeng Hu
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China.
- Henan University of Animal Husbandry and Economy, Zhengzhou, 450046, Hennan, China.
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, 450001, Henan, China.
- Henan Grass and Animal Engineering Technology Research Center, Zhengzhou, 450046, Henan, China.
| | - Yan Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, 450001, Henan, China
- Henan Grass and Animal Engineering Technology Research Center, Zhengzhou, 450046, Henan, China
| | - Meiling Xiang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, 450001, Henan, China
- Henan Grass and Animal Engineering Technology Research Center, Zhengzhou, 450046, Henan, China
| | - Dezhen Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
- Henan Key Laboratory of Bioactive Macromolecules, Zhengzhou, 450001, Henan, China
- Henan Grass and Animal Engineering Technology Research Center, Zhengzhou, 450046, Henan, China
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13
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Carotenoids in Drug Discovery and Medicine: Pathways and Molecular Targets Implicated in Human Diseases. Molecules 2022; 27:molecules27186005. [PMID: 36144741 PMCID: PMC9503763 DOI: 10.3390/molecules27186005] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/01/2022] [Accepted: 09/12/2022] [Indexed: 11/23/2022] Open
Abstract
Carotenoids are isoprenoid-derived natural products produced in plants, algae, fungi, and photosynthetic bacteria. Most animals cannot synthesize carotenoids because the biosynthetic machinery to create carotenoids de novo is absent in animals, except arthropods. Carotenoids are biosynthesized from two C20 geranylgeranyl pyrophosphate (GGPP) molecules made from isopentenyl pyrophosphate (IPP) and dimethylallyl pyrophosphate (DMAPP) via the methylerythritol 4-phosphate (MEP) route. Carotenoids can be extracted by a variety of methods, including maceration, Soxhlet extraction, supercritical fluid extraction (SFE), microwave-assisted extraction (MAE), accelerated solvent extraction (ASE), ultrasound-assisted extraction (UAE), pulsed electric field (PEF)-assisted extraction, and enzyme-assisted extraction (EAE). Carotenoids have been reported to exert various biochemical actions, including the inhibition of the Akt/mTOR, Bcl-2, SAPK/JNK, JAK/STAT, MAPK, Nrf2/Keap1, and NF-κB signaling pathways and the ability to increase cholesterol efflux to HDL. Carotenoids are absorbed in the intestine. A handful of carotenoids and carotenoid-based compounds are in clinical trials, while some are currently used as medicines. The application of metabolic engineering techniques for carotenoid production, whole-genome sequencing, and the use of plants as cell factories to produce specialty carotenoids presents a promising future for carotenoid research. In this review, we discussed the biosynthesis and extraction of carotenoids, the roles of carotenoids in human health, the metabolism of carotenoids, and carotenoids as a source of drugs and supplements.
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14
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Mou Z, Zhao D. Gene rational design: the dawn of crop breeding. TRENDS IN PLANT SCIENCE 2022; 27:633-636. [PMID: 35382978 DOI: 10.1016/j.tplants.2022.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/07/2022] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
Limited natural genetic diversity restricts the creation of excellent crops. Modeling-guided rational design represents a promising protein engineering technology to optimize existing genes for desired agronomic traits. Rational design coupled with other engineering approaches could also be applied in artificial gene improvement for the creation of economically valuable crops.
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Affiliation(s)
- Zongmin Mou
- School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China; Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming 650504, China
| | - Dake Zhao
- School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China; Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming 650504, China.
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15
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NtDREB-1BL1 Enhances Carotenoid Biosynthesis by Regulating Phytoene Synthase in Nicotiana tabacum. Genes (Basel) 2022; 13:genes13071134. [PMID: 35885917 PMCID: PMC9322988 DOI: 10.3390/genes13071134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 01/27/2023] Open
Abstract
As one of the most imperative antioxidants in higher plants, carotenoids serve as accessory pigments to harvest light for photosynthesis as well as photoprotectors for plants to adapt to high light stress. Phytoene synthase (PSY) is the entry enzyme and also the major rate-limiting enzyme in the carotenoid pathway. Here, we report a dehydration-responsive element-binding protein (DREB) transcription factor member in Nicotiana tabacum K326, NtDREB-1BL1, which regulates carotenoids biosynthesis by binding to the NtPSY promoter. The NtDREB-1BL1 transcript was widely distributed in leaves by Real-time PCR. Confocal image revealed that NtDREB-1BL1 was localized in the nucleus. The chromatin immunoprecipitation (ChIP) with the qPCR technique indicated that NtDREB-1BL1 could anchor the promoter region of NtPSY. Overexpression (NtDREB-1BL1 OE) and RNA interference (NtDREB-1BL1 RNAi) of NtDREB-1BL1 were performed to evaluate its biological function in N. tabacum. Both carotenoid and chlorophyll contents increased in transgenic plants of NtDREB-1BL1 OE compared with wild-type (WT) plants, with the augment of the genes involved in carotenoid biosynthesis. In contrast, the contents of carotenoid and chlorophyll significantly decreased in transgenic plants of NtDREB-1BL1 RNAi compared to WT, along with the decline in the expression of genes related to carotenoid biosynthesis. Moreover, transgenic plants of NtDREB-1BL1 OE exhibited enhanced tolerance under drought stress, with the weakened tolerance of drought stress in transgenic plants of NtDREB-1BL1 RNAi. In conclusion, our results illustrated the new role of transcription factor NtDREB-1BL1 in improving carotenoid biosynthesis through regulating NtPSY expression.
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16
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Ku T, Gu H, Li Z, Tian B, Xie Z, Shi G, Chen W, Wei F, Cao G. Developmental Differences between Anthers of Diploid and Autotetraploid Rice at Meiosis. PLANTS 2022; 11:plants11131647. [PMID: 35807599 PMCID: PMC9268837 DOI: 10.3390/plants11131647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/18/2022] [Accepted: 06/19/2022] [Indexed: 11/25/2022]
Abstract
Newly synthetic autotetraploid rice shows lower pollen fertility and seed setting rate relative to diploid rice, which hinders its domestication and breeding. In this study, cytological analysis showed that at meiosis I stage, an unbalanced segregation of homologous chromosomes, occurred as well as an early degeneration of tapetal cells in autotetraploid rice. We identified 941 differentially expressed proteins (DEPs) in anthers (meiosis I), including 489 upregulated and 452 downregulated proteins. The DEPs identified were related to post-translational modifications such as protein ubiquitination. These modifications are related to chromatin remodeling and homologous recombination abnormalities during meiosis. In addition, proteins related to the pentose phosphate pathway (BGIOSGA016558, BGIOSGA022166, and BGIOSGA028743) were downregulated. This may be related to the failure of autotetraploid rice to provide the energy needed for cell development after polyploidization, which then ultimately leads to the early degradation of the tapetum. Moreover, we also found that proteins (BGIOSGA017346 and BGIOSGA027368) related to glutenin degradation were upregulated, indicating that a large loss of glutenin cannot provide nutrition for the development of tapetum, resulting in early degradation of tapetum. Taken together, these evidences may help to understand the differences in anther development between diploid and autotetraploid rice during meiosis.
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Wang Q, Zhang J, Li Y, Wang R. Construction of the SHP-GLOX lignin regulation system and its application in rice straw. PLANT METHODS 2022; 18:85. [PMID: 35717235 PMCID: PMC9206748 DOI: 10.1186/s13007-022-00917-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND There is great productivity of rice(Oryza sativa L. spp. japonica) straw in China, which is a potential source of biomass for biofuel and forage. However, the high levels of lignins in rice straw limited its usage and induced the formation of agricultural waste. In order to modify the lignins contents to improve biofuel production and forage digestibility, we selected Soybean hull peroxidase (SHP) and Glyoxal oxidase (GLOX) as candidate genes to improve quality of rice straw. SHP, a class III plant peroxidase, is derived from multiple sources. It has several advantages, such as high resistance to heat, high stability under acidic and alkaline conditions, and a broad substrate range. SHP is speculated to be useful for lignin degradation. Glyoxal oxidase (GLOX) is an extracellular oxidase that can oxidize glyoxal and methylglyoxal in the extracellular medium to generate H2O2. RESULTS In the present study, the SHP and GLOX genes in pCAMBIA3301-glycine-rich protein (GRP)-SHP-GLOX, designated the K167 vector, were optimized and introduced into rice embryos using Agrobacterium-mediated transformation. Positive transgenic rice embryos were examined using molecular, physiological, biochemical and fermentation tests. The outcomes suggested that SHP degraded lignin effectively. CONCLUSIONS This research has created a rice breeding material with normal growth and yield but stalks that are more amenable to degradation in the later stage for use in breeding rice varieties whose stalks are easily used for energy. Our results will improve the industrial and commercial applications of rice straw.
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Affiliation(s)
- Qingdong Wang
- Henan Key Laboratory of Bioactive Macromolecules, Laboratory of Straw Enzymatic Technology Research, College of Life Science, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Jiayuan Zhang
- Henan Key Laboratory of Bioactive Macromolecules, Laboratory of Straw Enzymatic Technology Research, College of Life Science, Zhengzhou University, Zhengzhou, 450001 Henan China
- Department of Clinical Medicine, Nan Yang Medical College, Nanyang, 473000 Henan China
| | - Yan Li
- Henan Key Laboratory of Bioactive Macromolecules, Laboratory of Straw Enzymatic Technology Research, College of Life Science, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Ran Wang
- Henan Key Laboratory of Bioactive Macromolecules, Laboratory of Straw Enzymatic Technology Research, College of Life Science, Zhengzhou University, Zhengzhou, 450001 Henan China
- College of Life Science, Henan Agricultural University, Zhengzhou, 450002 Henan China
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Srivastava Y, Tripathi S, Mishra B, Sangwan NS. Cloning and homologous characterization of geranylgeranyl pyrophosphate synthase (GGPPS) from Withania somnifera revealed alterations in metabolic flux towards gibberellic acid biosynthesis. PLANTA 2022; 256:4. [PMID: 35648276 DOI: 10.1007/s00425-022-03912-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
Overexpression of a novel geranylgeranyl pyrophosphate synthase gene (WsGGPPS) in planta resulted in increased levels of gibberellic acid and decrease in withanolide content. Withania somnifera (L.) Dunal, the herb from family Solanaceae is one of the most treasured medicinal plant used in traditional medicinal systems owing to its unique stockpile of pharmaceutically active secondary metabolites. Phytochemical and pharmacological studies in this plant were well established, but the genes affecting the regulation of biosynthesis of major metabolites were not well elucidated. In this study cloning and functional characterization of a key enzyme in terpenoid biosynthetic pathway viz. geranylgeranyl pyrophosphate synthase (EC 2.5.1.29) gene from Withania somnifera was performed. The full length WsGGPPS gene contained 1,104 base pairs that encode a polypeptide of 365 amino acids. The quantitative expression analysis suggested that WsGGPPS transcripts were expressed maximally in flower tissues followed by berry tissues. The expression levels of WsGGPPS were found to be regulated by methyl jasmonate (MeJA) and salicylic acid (SA). Amino acid sequence alignment and phylogenetic studies suggested that WsGGPPS had close similarities with GGPPS of Solanum tuberosum and Solanum pennellii. The structural analysis provided basic information about three dimensional features and physicochemical parameters of WsGGPPS protein. Overexpression of WsGGPPS in planta for its functional characterization suggested that the WsGGPPS was involved in gibberellic acid biosynthesis.
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Affiliation(s)
- Yashdeep Srivastava
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Lucknow, 226015, India
| | - Sandhya Tripathi
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Lucknow, 226015, India
| | | | - Neelam S Sangwan
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Lucknow, 226015, India.
- School of Interdisciplinary and Applied Sciences, Central University of Haryana, Jant-Pali, Mahendragarh, Haryana, 123031, India.
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Song W, Wei F, Gao S, Dong C, Hao J, Jin L, Li F, Wei P, Guo J, Wang R. Functional characterization and comparison of lycopene epsilon-cyclase genes in Nicotiana tabacum. BMC PLANT BIOLOGY 2022; 22:252. [PMID: 35597910 PMCID: PMC9123772 DOI: 10.1186/s12870-022-03634-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Lycopene epsilon-cyclase (ε-LCY) is a key enzyme in the carotenoid biosynthetic pathway (CBP) of higher plants. In previous work, we cloned two Ntε-LCY genes from allotetraploid tobacco (Nicotiana tabacum), Ntε-LCY2 and Ntε-LCY1, and demonstrated the overall effect of Ntε-LCY genes on carotenoid biosynthesis and stress resistance. However, their genetic and functional characteristics require further research in polyploid plants. RESULTS Here, we used CRISPR/Cas9 to obtain Ntε-LCY2 and Ntε-LCY1 mutants in allotetraploid N.tabacum K326. Ntε-LCY2 and Ntε-LCY1 had similar promoter cis-acting elements, including light-responsive elements. The Ntε-LCY genes were expressed in roots, stems, leaves, flowers, and young fruit, and their highest expression levels were found in leaves. Ntε-LCY2 and Ntε-LCY1 genes responded differently to normal light and high light stress. Both the Ntε-LCY2 and the Ntε-LCY1 mutants had a more rapid leaf growth rate, especially ntε-lcy2-1. The expression levels of CBP genes were increased in the ntε-lcy mutants, and their total carotenoid content was higher. Under both normal light and high light stress, the ntε-lcy mutants had higher photosynthetic capacities and heat dissipation levels than the wild type, and this was especially true of ntε-lcy2-1. The reactive oxygen species content was lower in leaves of the ntε-lcy mutants. CONCLUSION In summary, the expression patterns and biological functions of the Ntε-LCY genes Ntε-LCY1 and Ntε-LCY2 differed in several respects. The mutation of Ntε-LCY2 was associated with a greater increase in the content of chlorophyll and various carotenoid components, and it enhanced the stress resistance of tobacco plants under high light.
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Affiliation(s)
- Weina Song
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Fang Wei
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Shuwen Gao
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475001, Henan, China
| | - Chen Dong
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, Henan, China
| | - Jianfeng Hao
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Lifeng Jin
- Zhengzhou Tobacco Research Institute, Zhengzhou, 450001, Henan, China
| | - Feng Li
- Zhengzhou Tobacco Research Institute, Zhengzhou, 450001, Henan, China
| | - Pan Wei
- Zhengzhou Tobacco Research Institute, Zhengzhou, 450001, Henan, China
| | - Jinggong Guo
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475001, Henan, China
| | - Ran Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China.
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