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Ni K, Lu X, Li S, Li F, Zhang Y, Cui R, Fan Y, Huang H, Chen X, Wang J, Wang S, Guo L, Zhao L, He Y, Ye W. GhLCYε-3 characterized as a lycopene cyclase gene responding to drought stress in cotton. Comput Struct Biotechnol J 2024; 23:384-395. [PMID: 38226314 PMCID: PMC10788185 DOI: 10.1016/j.csbj.2023.12.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/17/2024] Open
Abstract
Drought stress significantly affects crop productivity. Carotenoids are essential photosynthetic pigment for plants, bacteria, and algae, with signaling and antioxidant functions. Lutein is a crucial branch product in the carotenoid synthesis pathway, which effectively improves the stress tolerance of higher plants. lycopene cyclase, a central enzyme for lutein synthesis, holds great significance in regulating lutein production. This research establishes a correlation between lutein content and stress resistance by measuring the drought resistance and lutein content of various cotton materials. To identify which crucial genes are associated with lutein, the lycopene cyclase family (LCYs) was analyzed. The research found that LCYs form a highly conserved family divided into two subfamilies, LCY-ε (lycopene ε-cyclase) and LCY-β (lycopene β-cyclase). Most members of the LCY family contain photoresponsive elements and abscisic acid elements. qRT-PCR demonstrates showed that most genes responded positively to drought stress, and GhLCYε-3 was expressed significantly differently under drought stress. Virus-induced gene silencing (VIGS) assay showed that the content of GhLCYε-3 was significantly increased with MDA and PRO, and the contents of chlorophyll and lutein were significantly decreased in pYL156 plants. The decrease in GhLCYε-3 expression is speculated to lead to reduced lutein content in vivo, resulting in the accumulation of reactive oxygen species (ROS) and decreased drought tolerance. This research enriched the understanding of LCY gene family and lutein function, and provided a new reference for cotton planting in arid areas. Synopsis Lycopene cyclase plays an important role in enhancing the ability of scavenging ROS and drought resistance of plants.
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Affiliation(s)
- Kesong Ni
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Xuke Lu
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Shuyan Li
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Fei Li
- Hunan Institute of Cotton Science, Changde 415101, Hunan China
| | - Yuexin Zhang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Ruifeng Cui
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Yapeng Fan
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Hui Huang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Xiugui Chen
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Junjuan Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Shuai Wang
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Lixue Guo
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Lanjie Zhao
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
| | - Yunxin He
- Hunan Institute of Cotton Science, Changde 415101, Hunan China
| | - Wuwei Ye
- Institute of Cotton Research of Chinese Academy of Agricultural Sciences / Research Base, Anyang Institute of Technology, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Anyang 455000, Henan, China
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Qu CL, Jin H, Zhang B, Chen WJ, Zhang Y, Xu YY, Wang R, Lao YM. Haematococcus lacustris Carotenogensis: A Historical Event of Primary to Secondary Adaptations to Earth's Oxygenation. Life (Basel) 2024; 14:576. [PMID: 38792597 PMCID: PMC11121925 DOI: 10.3390/life14050576] [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: 11/22/2023] [Revised: 02/21/2024] [Accepted: 02/28/2024] [Indexed: 05/26/2024] Open
Abstract
(1) Background: Oxygen has exerted a great effect in shaping the environment and driving biological diversity in Earth's history. Green lineage has evolved primary and secondary carotenoid biosynthetic systems to adapt to Earth's oxygenation, e.g., Haematococcus lacustris, which accumulates the highest amount of secondary astaxanthin under stresses. The two systems are controlled by lycopene ε-cyclase (LCYE) and β-cyclase (LCYB), which leave an important trace in Earth's oxygenation. (2) Objectives: This work intends to disclose the underlying molecular evolutionary mechanism of Earth's oxygenation in shaping green algal carotenogensis with a special focus on lycopene cyclases. (3) Methods: The two kinds of cyclases were analyzed by site-directed mutagenesis, phylogeny, divergence time and functional divergence. (4) Results: Green lineage LCYEs appeared at ~1.5 Ga after the first significant appearance and accumulation of atmospheric oxygen, the so-called Great Oxygenation Event (GOE), from which LCYBs diverged by gene duplication. Bacterial β-bicyclases evolved from β-monocyclase. Enhanced catalytic activity accompanied evolutionary transformation from ε-/β-monocyclase to β-bicyclase. Strong positive selection occurred in green lineage LCYEs after the GOE and in algal LCYBs during the second oxidation, the Neoproterozoic Oxygenation Event (NOE). Positively selected sites in the catalytic cavities of the enzymes controlled the mono-/bicyclase activity, respectively. Carotenoid profiling revealed that oxidative adaptation has been wildly preserved in evolution. (5) Conclusions: the functionalization of the two enzymes is a result of primary to secondary adaptations to Earth's oxygenation.
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Affiliation(s)
- Cui Lan Qu
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518055, China
| | - Hui Jin
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou 511458, China;
| | - Bing Zhang
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518055, China
| | - Wei Jian Chen
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518055, China
| | - Yang Zhang
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518055, China
| | - Yuan Yuan Xu
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518055, China
| | - Rui Wang
- Shenzhen Institute of Quality & Safety Inspection and Research, Shenzhen 518055, China
| | - Yong Min Lao
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
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Qin Z, Liu M, Ren X, Zeng W, Luo Z, Zhou J. De Novo Biosynthesis of Lutein in Yarrowia lipolytica. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5348-5357. [PMID: 38412053 DOI: 10.1021/acs.jafc.3c09080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Lutein is a high-value tetraterpenoid carotenoid that is widely used in feed, cosmetics, food, and drugs. Microbial synthesis of lutein is an important method for green and sustainable production, serving as an alternative to plant extraction methods. However, an inadequate precursor supply and low catalytic efficiency of key pathway enzymes are the main reasons for the low efficacy of microbial synthesis of lutein. In this study, some strategies, such as enhancing the MVA pathway and localizing α-carotene synthase OluLCY within the subcellular organelles in Yarrowia lipolytica, were adopted to enhance the synthesis of precursor α-carotene, which resulted in a 10.50-fold increase in α-carotene titer, reaching 38.50 mg/L. Subsequently, by improving hydroxylase activity with truncated N-terminal transport peptide and locating hydroxylases to subcellular organelles, the final strain L9 producing 75.25 mg/L lutein was obtained. Eventually, a lutein titer of 675.40 mg/L (6.13 mg/g DCW) was achieved in a 5 L bioreactor by adding the antioxidant 2,6-ditert-butyl-4-methylphenol. This study realizes de novo synthesis of lutein in Y. lipolytica for the first time and achieves the highest lutein titer reported so far.
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Affiliation(s)
- Zhilei Qin
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Mengsu Liu
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Xuefeng Ren
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Weizhu Zeng
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Zhengshan Luo
- School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
| | - Jingwen Zhou
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Science Center for Future Foods, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
- Jiangsu Provisional Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China
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Fang H, Liu J, Ma R, Zou Y, Ho SH, Chen J, Xie Y. Functional Characterization of Lycopene β- and ε-Cyclases from a Lutein-Enriched Green Microalga Chlorella sorokiniana FZU60. Mar Drugs 2023; 21:418. [PMID: 37504949 PMCID: PMC10381880 DOI: 10.3390/md21070418] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/29/2023] Open
Abstract
Lutein is a high-value carotenoid with many human health benefits. Lycopene β- and ε-cyclases (LCYB and LCYE, respectively) catalyze the cyclization of lycopene into distinct downstream branches, one of which is the lutein biosynthesis pathway, via α-carotene. Hence, LCYB and LCYE are key enzymes in lutein biosynthesis. In this study, the coding genes of two lycopene cyclases (CsLCYB and CsLCYE) of a lutein-enriched marine green microalga, Chlorella sorokiniana FZU60, were isolated and identified. A sequence analysis and computational modeling of CsLCYB and CsLCYE were performed using bioinformatics to identify the key structural domains. Further, a phylogenetic analysis revealed that CsLCYB and CsLCYE were homogeneous to the proteins of other green microalgae. Subcellular localization tests in Nicotiana benthamiana showed that CsLCYB and CsLCYE localized in chloroplasts. A pigment complementation assay in Escherichia coli revealed that CsLCYB could efficiently β-cyclize both ends of lycopene to produce β-carotene. On the other hand, CsLCYE possessed a strong ε-monocyclase activity for the production of δ-carotene and a weak ε-bicyclic activity for the production of ε-carotene. In addition, CsLCYE was able to catalyze lycopene into β-monocyclic γ-carotene and ultimately produced α-carotene with a β-ring and an ε-ring via γ-carotene or δ-carotene. Moreover, the co-expression of CsLCYB and CsLCYE in E. coli revealed that α-carotene was a major product, which might lead to the production of a high level of lutein in C. sorokiniana FZU60. The findings provide a theoretical foundation for performing metabolic engineering to improve lutein biosynthesis and accumulation in C. sorokiniana FZU60.
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Affiliation(s)
- Hong Fang
- Marine Biological Manufacturing Center of Fuzhou Institute of Oceanography, Fuzhou University, Fuzhou 350108, China
- Technical Innovation Service Platform for High-Value and High-Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High-Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Junjie Liu
- Marine Biological Manufacturing Center of Fuzhou Institute of Oceanography, Fuzhou University, Fuzhou 350108, China
- Technical Innovation Service Platform for High-Value and High-Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High-Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Ruijuan Ma
- Marine Biological Manufacturing Center of Fuzhou Institute of Oceanography, Fuzhou University, Fuzhou 350108, China
- Technical Innovation Service Platform for High-Value and High-Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High-Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Yiping Zou
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Shih-Hsin Ho
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jianfeng Chen
- Marine Biological Manufacturing Center of Fuzhou Institute of Oceanography, Fuzhou University, Fuzhou 350108, China
- Technical Innovation Service Platform for High-Value and High-Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High-Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Youping Xie
- Marine Biological Manufacturing Center of Fuzhou Institute of Oceanography, Fuzhou University, Fuzhou 350108, China
- Technical Innovation Service Platform for High-Value and High-Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High-Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
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5
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Concurrent Production of α- and β-Carotenes with Different Stoichiometries Displaying Diverse Antioxidative Activities via Lycopene Cyclases-Based Rational System. Antioxidants (Basel) 2022; 11:antiox11112267. [DOI: 10.3390/antiox11112267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
α- and β-carotenes belong to the most essential carotenoids in the human body and display remarkable pharmacological value for health due to their beneficial antioxidant activities. Distinct high α-/β-carotene stoichiometries have gained increasing attention for their effective preventions of Alzheimer’s disease, cardiovascular disease, and cancer. However, it is extremely difficult to obtain α-carotene in nature, impeding the accumulations of high α-/β-carotene stoichiometries and excavation of their antioxidant activities. Herein, we developed a dynamically operable strategy based on lycopene cyclases (LCYB and LCYE) for concurrently enriching α- and β-carotenes along with high stoichiometries in E. coli. Membrane-targeted and promoter-centered approaches were firstly implemented to spatially enhance catalytic efficiency and temporally boost expression of TeLCYE to address its low competitivity at the starting stage. Dynamically temperature-dependent regulation of TeLCYE and TeLCYB was then performed to finally achieve α-/β-carotene stoichiometries of 4.71 at 37 °C, 1.65 at 30 °C, and 1.06 at 25 °C, respectively. In the meantime, these α-/β-carotene ratios were confirmed to result in diverse antioxidative activities. According to our knowledge, this is the first time that both the widest range and antioxidant activities of high α/β-carotene stoichiometries were reported in any organism. Our work provides attractive potentials for obtaining natural products with competitivity and a new insight on the protective potentials of α-/β-carotenes with high ratios for health supply.
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Bai Y, Cao T, Dautermann O, Buschbeck P, Cantrell MB, Chen Y, Lein CD, Shi X, Ware MA, Yang F, Zhang H, Zhang L, Peers G, Li X, Lohr M. Green diatom mutants reveal an intricate biosynthetic pathway of fucoxanthin. Proc Natl Acad Sci U S A 2022; 119:e2203708119. [PMID: 36095219 PMCID: PMC9499517 DOI: 10.1073/pnas.2203708119] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 08/08/2022] [Indexed: 01/17/2023] Open
Abstract
Fucoxanthin is a major light-harvesting pigment in ecologically important algae such as diatoms, haptophytes, and brown algae (Phaeophyceae). Therefore, it is a major driver of global primary productivity. Species of these algal groups are brown colored because the high amounts of fucoxanthin bound to the proteins of their photosynthetic machineries enable efficient absorption of green light. While the structure of these fucoxanthin-chlorophyll proteins has recently been resolved, the biosynthetic pathway of fucoxanthin is still unknown. Here, we identified two enzymes central to this pathway by generating corresponding knockout mutants of the diatom Phaeodactylum tricornutum that are green due to the lack of fucoxanthin. Complementation of the mutants with the native genes or orthologs from haptophytes restored fucoxanthin biosynthesis. We propose a complete biosynthetic path to fucoxanthin in diatoms and haptophytes based on the carotenoid intermediates identified in the mutants and in vitro biochemical assays. It is substantially more complex than anticipated and reveals diadinoxanthin metabolism as the central regulatory hub connecting the photoprotective xanthophyll cycle and the formation of fucoxanthin. Moreover, our data show that the pathway evolved by repeated duplication and neofunctionalization of genes for the xanthophyll cycle enzymes violaxanthin de-epoxidase and zeaxanthin epoxidase. Brown algae lack diadinoxanthin and the genes described here and instead use an alternative pathway predicted to involve fewer enzymes. Our work represents a major step forward in elucidating the biosynthesis of fucoxanthin and understanding the evolution, biogenesis, and regulation of the photosynthetic machinery in algae.
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Affiliation(s)
- Yu Bai
- Department of Biology, Colorado State University, Fort Collins, CO 80523-1878
| | - Tianjun Cao
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China
- Institute of Biology, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Oliver Dautermann
- Institut für Molekulare Physiologie, Johannes Gutenberg-Universität, 55099 Mainz, Germany
| | - Paul Buschbeck
- Institut für Molekulare Physiologie, Johannes Gutenberg-Universität, 55099 Mainz, Germany
| | - Michael B. Cantrell
- Department of Biology, Colorado State University, Fort Collins, CO 80523-1878
| | - Yinjuan Chen
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Instrumentation and Service Center for Molecular Sciences, Westlake University, Hangzhou 310024, China
| | - Christopher D. Lein
- Institut für Molekulare Physiologie, Johannes Gutenberg-Universität, 55099 Mainz, Germany
| | - Xiaohuo Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Instrumentation and Service Center for Molecular Sciences, Westlake University, Hangzhou 310024, China
| | - Maxwell A. Ware
- Department of Biology, Colorado State University, Fort Collins, CO 80523-1878
| | - Fenghua Yang
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China
| | - Huan Zhang
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China
- Institute of Biology, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Lihan Zhang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou 310024, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Graham Peers
- Department of Biology, Colorado State University, Fort Collins, CO 80523-1878
| | - Xiaobo Li
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, China
- Institute of Biology, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Martin Lohr
- Institut für Molekulare Physiologie, Johannes Gutenberg-Universität, 55099 Mainz, Germany
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Li C, Swofford CA, Rückert C, Chatzivasileiou AO, Ou RW, Opdensteinen P, Luttermann T, Zhou K, Stephanopoulos G, Jones Prather KL, Zhong-Johnson EZL, Liang S, Zheng S, Lin Y, Sinskey AJ. Heterologous production of α-Carotene in Corynebacterium glutamicum using a multi-copy chromosomal integration method. BIORESOURCE TECHNOLOGY 2021; 341:125782. [PMID: 34419880 DOI: 10.1016/j.biortech.2021.125782] [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] [Received: 06/23/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 06/13/2023]
Abstract
The carotenoid, α-carotene, is very beneficial for human health and wellness, but microbial production of this compound is notoriously difficult, due to the asymmetric rings on either end of its terpenoid backbone. Here, we report for the first time the efficient production of α-carotene in the industrial bacterium Corynebaterium glutamicum by using a combined pathway engineering approach including evaluation of the performance of different cyclases and analysis of key metabolic intermediates to determine flux bottlenecks in the carotenoid biosynthesis pathway. A multi-copy chromosomal integration method was pivotal in achieving stable expression of the cyclases. In fed-batch fermentation, 1,054 mg/L of α-carotene was produced by the best strain, which is the highest reported titer achieved in microbial fermentation. The success of increased α-carotene production suggests that the multi-copy chromosomal integration method can be a useful metabolic engineering tool for overexpression of key enzymes in C. glutamicum and other bacterium as well.
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Affiliation(s)
- Cheng Li
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 USA; Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore; Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Charles A Swofford
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 USA; Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore
| | - Christian Rückert
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 USA; Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore
| | - Alkiviadis Orfefs Chatzivasileiou
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Rui Wen Ou
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 USA; Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore
| | - Patrick Opdensteinen
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Tobias Luttermann
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Kang Zhou
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore; Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585 Singapore
| | - Gregory Stephanopoulos
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Kristala L Jones Prather
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | | | - Shuli Liang
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Suiping Zheng
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Ying Lin
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, PR China
| | - Anthony J Sinskey
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139 USA; Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore.
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Zafar J, Aqeel A, Shah FI, Ehsan N, Gohar UF, Moga MA, Festila D, Ciurea C, Irimie M, Chicea R. Biochemical and Immunological implications of Lutein and Zeaxanthin. Int J Mol Sci 2021; 22:10910. [PMID: 34681572 PMCID: PMC8535525 DOI: 10.3390/ijms222010910] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 09/27/2021] [Accepted: 10/03/2021] [Indexed: 12/21/2022] Open
Abstract
Throughout history, nature has been acknowledged for being a primordial source of various bioactive molecules in which human macular carotenoids are gaining significant attention. Among 750 natural carotenoids, lutein, zeaxanthin and their oxidative metabolites are selectively accumulated in the macular region of living beings. Due to their vast applications in food, feed, pharmaceutical and nutraceuticals industries, the global market of lutein and zeaxanthin is continuously expanding but chemical synthesis, extraction and purification of these compounds from their natural repertoire e.g., plants, is somewhat costly and technically challenging. In this regard microbial as well as microalgal carotenoids are considered as an attractive alternative to aforementioned challenges. Through the techniques of genetic engineering and gene-editing tools like CRISPR/Cas9, the overproduction of lutein and zeaxanthin in microorganisms can be achieved but the commercial scale applications of such procedures needs to be done. Moreover, these carotenoids are highly unstable and susceptible to thermal and oxidative degradation. Therefore, esterification of these xanthophylls and microencapsulation with appropriate wall materials can increase their shelf-life and enhance their application in food industry. With their potent antioxidant activities, these carotenoids are emerging as molecules of vital importance in chronic degenerative, malignancies and antiviral diseases. Therefore, more research needs to be done to further expand the applications of lutein and zeaxanthin.
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Affiliation(s)
- Javaria Zafar
- Institute of Industrial Biotechnology, Government College University Lahore, Lahore 54000, Pakistan; (J.Z.); (A.A.); (F.I.S.); (N.E.); (U.F.G.)
| | - Amna Aqeel
- Institute of Industrial Biotechnology, Government College University Lahore, Lahore 54000, Pakistan; (J.Z.); (A.A.); (F.I.S.); (N.E.); (U.F.G.)
| | - Fatima Iftikhar Shah
- Institute of Industrial Biotechnology, Government College University Lahore, Lahore 54000, Pakistan; (J.Z.); (A.A.); (F.I.S.); (N.E.); (U.F.G.)
| | - Naureen Ehsan
- Institute of Industrial Biotechnology, Government College University Lahore, Lahore 54000, Pakistan; (J.Z.); (A.A.); (F.I.S.); (N.E.); (U.F.G.)
| | - Umar Farooq Gohar
- Institute of Industrial Biotechnology, Government College University Lahore, Lahore 54000, Pakistan; (J.Z.); (A.A.); (F.I.S.); (N.E.); (U.F.G.)
| | - Marius Alexandru Moga
- Faculty of Medicine, Transilvania University of Brasov, 500036 Brasov, Romania; (M.A.M.); (M.I.)
| | - Dana Festila
- Radiology and Maxilo Facial Surgery Department, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj Napoca, Romania
| | - Codrut Ciurea
- Faculty of Medicine, Transilvania University of Brasov, 500036 Brasov, Romania; (M.A.M.); (M.I.)
| | - Marius Irimie
- Faculty of Medicine, Transilvania University of Brasov, 500036 Brasov, Romania; (M.A.M.); (M.I.)
| | - Radu Chicea
- Faculty of Medicine, “Lucian Blaga” University, 550169 Sibiu, Romania;
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9
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Lehmann M, Vamvaka E, Torrado A, Jahns P, Dann M, Rosenhammer L, Aziba A, Leister D, Rühle T. Introduction of the Carotenoid Biosynthesis α-Branch Into Synechocystis sp. PCC 6803 for Lutein Production. FRONTIERS IN PLANT SCIENCE 2021; 12:699424. [PMID: 34295345 PMCID: PMC8291087 DOI: 10.3389/fpls.2021.699424] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 06/09/2021] [Indexed: 06/13/2023]
Abstract
Lutein, made by the α-branch of the methyl-erythritol phosphate (MEP) pathway, is one of the most abundant xanthophylls in plants. It is involved in the structural stabilization of light-harvesting complexes, transfer of excitation energy to chlorophylls and photoprotection. In contrast, lutein and the α-branch of the MEP pathway are not present in cyanobacteria. In this study, we genetically engineered the cyanobacterium Synechocystis for the missing MEP α-branch resulting in lutein accumulation. A cassette comprising four Arabidopsis thaliana genes coding for two lycopene cyclases (AtLCYe and AtLCYb) and two hydroxylases (AtCYP97A and AtCYP97C) was introduced into a Synechocystis strain that lacks the endogenous, cyanobacterial lycopene cyclase cruA. The resulting synlut strain showed wild-type growth and only moderate changes in total pigment composition under mixotrophic conditions, indicating that the cruA deficiency can be complemented by Arabidopsis lycopene cyclases leaving the endogenous β-branch intact. A combination of liquid chromatography, UV-Vis detection and mass spectrometry confirmed a low but distinct synthesis of lutein at rates of 4.8 ± 1.5 nmol per liter culture at OD730 (1.03 ± 0.47 mmol mol-1 chlorophyll). In conclusion, synlut provides a suitable platform to study the α-branch of the plastidic MEP pathway and other functions related to lutein in a cyanobacterial host system.
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Affiliation(s)
- Martin Lehmann
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Evgenia Vamvaka
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Alejandro Torrado
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Peter Jahns
- Plant Biochemistry, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Marcel Dann
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Lea Rosenhammer
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Amel Aziba
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Dario Leister
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Thilo Rühle
- Plant Molecular Biology, Faculty of Biology, Ludwig-Maximilians-University Munich, Munich, Germany
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10
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Tamaki S, Mochida K, Suzuki K. Diverse Biosynthetic Pathways and Protective Functions against Environmental Stress of Antioxidants in Microalgae. PLANTS (BASEL, SWITZERLAND) 2021; 10:1250. [PMID: 34205386 PMCID: PMC8234872 DOI: 10.3390/plants10061250] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 01/08/2023]
Abstract
Eukaryotic microalgae have been classified into several biological divisions and have evolutionarily acquired diverse morphologies, metabolisms, and life cycles. They are naturally exposed to environmental stresses that cause oxidative damage due to reactive oxygen species accumulation. To cope with environmental stresses, microalgae contain various antioxidants, including carotenoids, ascorbate (AsA), and glutathione (GSH). Carotenoids are hydrophobic pigments required for light harvesting, photoprotection, and phototaxis. AsA constitutes the AsA-GSH cycle together with GSH and is responsible for photooxidative stress defense. GSH contributes not only to ROS scavenging, but also to heavy metal detoxification and thiol-based redox regulation. The evolutionary diversity of microalgae influences the composition and biosynthetic pathways of these antioxidants. For example, α-carotene and its derivatives are specific to Chlorophyta, whereas diadinoxanthin and fucoxanthin are found in Heterokontophyta, Haptophyta, and Dinophyta. It has been suggested that AsA is biosynthesized via the plant pathway in Chlorophyta and Rhodophyta and via the Euglena pathway in Euglenophyta, Heterokontophyta, and Haptophyta. The GSH biosynthetic pathway is conserved in all biological kingdoms; however, Euglenophyta are able to synthesize an additional thiol antioxidant, trypanothione, using GSH as the substrate. In the present study, we reviewed and discussed the diversity of microalgal antioxidants, including recent findings.
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Affiliation(s)
- Shun Tamaki
- Microalgae Production Control Technology Laboratory, RIKEN Baton Zone Program, Yokohama 230-0045, Japan; (K.M.); (K.S.)
| | - Keiichi Mochida
- Microalgae Production Control Technology Laboratory, RIKEN Baton Zone Program, Yokohama 230-0045, Japan; (K.M.); (K.S.)
- RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan
- Kihara Institute for Biological Research, Yokohama City University, Yokohama 230-0045, Japan
- School of Information and Data Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Kengo Suzuki
- Microalgae Production Control Technology Laboratory, RIKEN Baton Zone Program, Yokohama 230-0045, Japan; (K.M.); (K.S.)
- euglena Co., Ltd., Tokyo 108-0014, Japan
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11
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Molecular cloning and functional characterization of CvLCYE, a key enzyme in lutein synthesis pathway in Chlorella vulgaris. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102246] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Yin L, Liu JX, Tao JP, Xing GM, Tan GF, Li S, Duan AQ, Ding X, Xu ZS, Xiong AS. The gene encoding lycopene epsilon cyclase of celery enhanced lutein and β-carotene contents and confers increased salt tolerance in Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 157:339-347. [PMID: 33186851 DOI: 10.1016/j.plaphy.2020.10.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/31/2020] [Indexed: 05/13/2023]
Abstract
Celery (Apium graveolens L.) is a leafy vegetable of Apiaceae, which is greatly popular because of its rich nutrients. Lutein and β-carotene are two important carotenoids. Lycopene epsilon cyclase (LCY-ε) is a key branch point enzyme in the carotenoid biosynthetic pathway. In this study, we cloned the AgLCY-ε gene from celery and overexpressed it in Arabidopsis. The results showed that both lutein and β-carotene accumulation increased significantly in transgenic Arabidopsis hosting AgLCY-ε gene, compared with wild type (WT) plants. The transcription levels of AtPSY and AtCRTISO genes involved in carotenoids biosynthesis also increased in transgenic lines. One-month-old transgenic Arabidopsis seedlings were treated with 200 mM NaCl. The malondialdehyde (MDA) content in transgenic Arabidopsis plants after salt treatment was significantly lower, and the activities of the two antioxidant enzymes, superoxide dismutase (SOD) and peroxidase (POD), were significantly increased than that of WT plants. Overexpression of AgLCY-ε gene showed increased lutein and β-carotene accumulations, and enhanced salt tolerance in transgenic plants.
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Affiliation(s)
- Lian Yin
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
| | - Jie-Xia Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
| | - Jian-Ping Tao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
| | - Guo-Ming Xing
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Shanxi Agricultural University, Taigu, China
| | - Guo-Fei Tan
- Institute of Horticulture, Guizhou Academy of Agricultural Sciences, Guiyang, 55006, China
| | - Sen Li
- Collaborative Innovation Center for Improving Quality and Increase Profits of Protected Vegetables in Shanxi, Shanxi Agricultural University, Taigu, China
| | - Ao-Qi Duan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
| | - Xu Ding
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
| | - Zhi-Sheng Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China
| | - Ai-Sheng Xiong
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, 1 Weigang, Nanjing, 210095, China.
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13
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Zhao Z, Liu Z, Mao X. Biotechnological Advances in Lycopene β-Cyclases. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11895-11907. [PMID: 33073992 DOI: 10.1021/acs.jafc.0c04814] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Lycopene β-cyclase is one of the key enzymes in the biosynthesis of carotenoids, which catalyzes the β-cyclization of both ends of lycopene to produce β-carotene. Lycopene β-cyclases are found in a wide range of sources, mainly plants and microorganisms. Lycopene β-cyclases have been extensively studied for their important catalytic activity, including for use in genetic engineering to modify plants and microorganisms, as a blocking target for lycopene industrial production strains, and for their genetic and physiological effects related to microorganic and plant biological traits. This review of lycopene β-cyclases summarizes the major studies on their basic classification, functional activity, metabolic engineering, and plant science.
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Affiliation(s)
- Zilong Zhao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Zhen Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xiangzhao Mao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
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14
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Dautermann O, Lyska D, Andersen-Ranberg J, Becker M, Fröhlich-Nowoisky J, Gartmann H, Krämer LC, Mayr K, Pieper D, Rij LM, Wipf HML, Niyogi KK, Lohr M. An algal enzyme required for biosynthesis of the most abundant marine carotenoids. SCIENCE ADVANCES 2020; 6:eaaw9183. [PMID: 32181334 PMCID: PMC7056318 DOI: 10.1126/sciadv.aaw9183] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 12/11/2019] [Indexed: 05/04/2023]
Abstract
Fucoxanthin and its derivatives are the main light-harvesting pigments in the photosynthetic apparatus of many chromalveolate algae and represent the most abundant carotenoids in the world's oceans, thus being major facilitators of marine primary production. A central step in fucoxanthin biosynthesis that has been elusive so far is the conversion of violaxanthin to neoxanthin. Here, we show that in chromalveolates, this reaction is catalyzed by violaxanthin de-epoxidase-like (VDL) proteins and that VDL is also involved in the formation of other light-harvesting carotenoids such as peridinin or vaucheriaxanthin. VDL is closely related to the photoprotective enzyme violaxanthin de-epoxidase that operates in plants and most algae, revealing that in major phyla of marine algae, an ancient gene duplication triggered the evolution of carotenoid functions beyond photoprotection toward light harvesting.
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Affiliation(s)
- O. Dautermann
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - D. Lyska
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - J. Andersen-Ranberg
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - M. Becker
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - J. Fröhlich-Nowoisky
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - H. Gartmann
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - L. C. Krämer
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - K. Mayr
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - D. Pieper
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - L. M. Rij
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
| | - H. M.-L. Wipf
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - K. K. Niyogi
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - M. Lohr
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, 55128 Mainz, Germany
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15
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Liang MH, Liang ZC, Chen HH, Jiang JG. The bifunctional identification of both lycopene β- and ε-cyclases from the lutein-rich Dunaliella bardawil. Enzyme Microb Technol 2019; 131:109426. [DOI: 10.1016/j.enzmictec.2019.109426] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/17/2019] [Accepted: 09/08/2019] [Indexed: 12/01/2022]
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16
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Papageorgiou M, Tselios C, Varotsis C. Photosensitivity responses ofSagittula stellataprobed by FTIR, fluorescence and Raman microspectroscopy. RSC Adv 2019; 9:27391-27397. [PMID: 35529232 PMCID: PMC9070597 DOI: 10.1039/c9ra03630j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/26/2019] [Indexed: 12/05/2022] Open
Abstract
Raman, fluorescence and FTIR experiments of prestine Sagittula stellata and Sagittula stellata–metal ion complexes grown in light and in dark were performed to probe the photosensitivity response of the cellular components in the marine bacterium. In the presence of Cu(ii) and Zn(ii) the frequency shifts of PO2−, C–O–C and C–O–P vibrations indicate metal binding to nucleic acids, carbohydrates and polysaccharides. We assign the observed bands in the 514.1 nm Raman spectra of the prestine S. Stellata and of the extracted carotenoids to the C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C and C–C stretching vibrations. The fluorescence excitation–emission matrix (EEM) of S. stellata in light, dark and in the presence of metal ions are reported and compared with the Raman and FTIR data. The novel ability of S. stellata although heterotrophic, to show light-dependent metal binding ability may be an important feature property that maintains a stable heterotroph–prototroph interaction and a dynamic system. Raman, fluorescence and FTIR experiments of prestine Sagittula stellata and Sagittula stellata–metal ion complexes grown in light and in dark were performed to probe the photosensitivity response of the cellular components in the marine bacterium.![]()
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Affiliation(s)
- Marios Papageorgiou
- Department of Environmental Science and Technology
- Cyprus University of Technology
- Lemesos
- Cyprus
| | - Charalampos Tselios
- Department of Environmental Science and Technology
- Cyprus University of Technology
- Lemesos
- Cyprus
| | - Constantinos Varotsis
- Department of Environmental Science and Technology
- Cyprus University of Technology
- Lemesos
- Cyprus
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17
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Madsen MA, Semerdzhiev S, Amtmann A, Tonon T. Engineering Mannitol Biosynthesis in Escherichia coli and Synechococcus sp. PCC 7002 Using a Green Algal Fusion Protein. ACS Synth Biol 2018; 7:2833-2840. [PMID: 30408953 DOI: 10.1021/acssynbio.8b00238] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The genetic engineering of microbial cell factories is a sustainable alternative to the chemical synthesis of organic compounds. Successful metabolic engineering often depends on manipulating several enzymes, requiring multiple transformation steps and selection markers, as well as protein assembly and efficient substrate channeling. Naturally occurring fusion genes encoding two or more enzymatic functions may offer an opportunity to simplify the engineering process and to generate ready-made protein modules, but their functionality in heterologous systems remains to be tested. Here we show that heterologous expression of a fusion enzyme from the marine alga Micromonas pusilla, comprising a mannitol-1-phosphate dehydrogenase and a mannitol-1-phosphatase, leads to synthesis of mannitol by Escherichia coli and by the cyanobacterium Synechococcus sp. PCC 7002. Neither of the heterologous systems naturally produce this sugar alcohol, which is widely used in food, pharmaceutical, medical, and chemical industries. While the mannitol production rates obtained by single-gene manipulation were lower than those previously achieved after pathway optimization with multiple genes, our findings show that naturally occurring fusion proteins can offer simple building blocks for the assembly and optimization of recombinant metabolic pathways.
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Affiliation(s)
- Mary Ann Madsen
- Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Stefan Semerdzhiev
- Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Anna Amtmann
- Institute of Molecular, Cell, and Systems Biology, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Thierry Tonon
- Centre for Novel Agricultural Products, Department of Biology, University of York, Heslington, York YO10 5DD, United Kingdom
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18
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Park C, Lee YS, Park SY, Park W. Methylobacterium currus sp. nov., isolated from a car air conditioning system. Int J Syst Evol Microbiol 2018; 68:3621-3626. [DOI: 10.1099/ijsem.0.003045] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Affiliation(s)
- Chulwoo Park
- 1Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yun Suk Lee
- 1Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - So-yoon Park
- 2Thermal Management Research Lab, Hyundai Motor Group, Seoul, Republic of Korea
| | - Woojun Park
- 1Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
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19
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Guyon JB, Vergé V, Schatt P, Lozano JC, Liennard M, Bouget FY. Comparative Analysis of Culture Conditions for the Optimization of Carotenoid Production in Several Strains of the Picoeukaryote Ostreococcus. Mar Drugs 2018; 16:md16030076. [PMID: 29495580 PMCID: PMC5867620 DOI: 10.3390/md16030076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/16/2018] [Accepted: 02/16/2018] [Indexed: 01/09/2023] Open
Abstract
Microalgae are promising sources for the sustainable production of compounds of interest for biotechnologies. Compared to higher plants, microalgae have a faster growth rate and can be grown in industrial photobioreactors. The microalgae biomass contains specific metabolites of high added value for biotechnology such as lipids, polysaccharides or carotenoid pigments. Studying carotenogenesis is important for deciphering the mechanisms of adaptation to stress tolerance as well as for biotechnological production. In recent years, the picoeukaryote Ostreococcustauri has emerged as a model organism thanks to the development of powerful genetic tools. Several strains of Ostreococcus isolated from different environments have been characterized with respect to light response or iron requirement. We have compared the carotenoid contents and growth rates of strains of Ostreococcus (OTTH595, RCC802 and RCC809) under a wide range of light, salinity and temperature conditions. Carotenoid profiles and productivities varied in a strain-specific and stress-dependent manner. Our results also illustrate that phylogenetically related microalgal strains originating from different ecological niches present specific interests for the production of specific molecules under controlled culture conditions.
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Affiliation(s)
- Jean-Baptiste Guyon
- Observatoire Océanologique, UMR 7621 Laboratoire d'Océanographie Microbienne, Université de Pierre et Marie Curie (Paris 06), Sorbonne Universités, 66650 Banyuls-sur-Mer, France.
| | - Valérie Vergé
- Observatoire Océanologique, UMR 7621 Laboratoire d'Océanographie Microbienne, Université de Pierre et Marie Curie (Paris 06), Sorbonne Universités, 66650 Banyuls-sur-Mer, France.
| | - Philippe Schatt
- Observatoire Océanologique, UMR 7621 Laboratoire d'Océanographie Microbienne, Université de Pierre et Marie Curie (Paris 06), Sorbonne Universités, 66650 Banyuls-sur-Mer, France.
| | - Jean-Claude Lozano
- Observatoire Océanologique, UMR 7621 Laboratoire d'Océanographie Microbienne, Université de Pierre et Marie Curie (Paris 06), Sorbonne Universités, 66650 Banyuls-sur-Mer, France.
| | - Marion Liennard
- Observatoire Océanologique, UMR 7621 Laboratoire d'Océanographie Microbienne, Université de Pierre et Marie Curie (Paris 06), Sorbonne Universités, 66650 Banyuls-sur-Mer, France.
| | - François-Yves Bouget
- Observatoire Océanologique, UMR 7621 Laboratoire d'Océanographie Microbienne, Université de Pierre et Marie Curie (Paris 06), Sorbonne Universités, 66650 Banyuls-sur-Mer, France.
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20
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Sun H, Zhao W, Mao X, Li Y, Wu T, Chen F. High-value biomass from microalgae production platforms: strategies and progress based on carbon metabolism and energy conversion. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:227. [PMID: 30151055 PMCID: PMC6100726 DOI: 10.1186/s13068-018-1225-6] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/09/2018] [Indexed: 05/13/2023]
Abstract
Microalgae are capable of producing sustainable bioproducts and biofuels by using carbon dioxide or other carbon substances in various cultivation modes. It is of great significance to exploit microalgae for the economical viability of biofuels and the revenues from high-value bioproducts. However, the industrial performance of microalgae is still challenged with potential conflict between cost of microalgae cultivation and revenues from them, which is mainly ascribed to the lack of comprehensive understanding of carbon metabolism and energy conversion. In this review, we provide an overview of the recent advances in carbon and energy fluxes of light-dependent reaction, Calvin-Benson-Bassham cycle, tricarboxylic acid cycle, glycolysis pathway and processes of product biosynthesis in microalgae, with focus on the increased photosynthetic and carbon efficiencies. Recent strategies for the enhanced production of bioproducts and biofuels from microalgae are discussed in detail. Approaches to alter microbial physiology by controlling light, nutrient and other environmental conditions have the advantages of increasing biomass concentration and product yield through the efficient carbon conversion. Engineering strategies by regulating carbon partitioning and energy route are capable of improving the efficiencies of photosynthesis and carbon conversion, which consequently realize high-value biomass. The coordination of carbon and energy fluxes is emerging as the potential strategy to increase efficiency of carbon fixation and product biosynthesis. To achieve more desirable high-value products, coordination of multi-stage cultivation with engineering and stress-based strategies occupies significant positions in a long term.
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Affiliation(s)
- Han Sun
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Weiyang Zhao
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Xuemei Mao
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Yuelian Li
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Tao Wu
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
| | - Feng Chen
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing, 100871 China
- BIC-ESAT, College of Engineering, Peking University, Beijing, 100871 China
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Dautermann O, Lohr M. A functional zeaxanthin epoxidase from red algae shedding light on the evolution of light-harvesting carotenoids and the xanthophyll cycle in photosynthetic eukaryotes. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 92:879-891. [PMID: 28949044 DOI: 10.1111/tpj.13725] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 05/20/2023]
Abstract
The epoxy-xanthophylls antheraxanthin and violaxanthin are key precursors of light-harvesting carotenoids and participate in the photoprotective xanthophyll cycle. Thus, the invention of zeaxanthin epoxidase (ZEP) catalyzing their formation from zeaxanthin has been a fundamental step in the evolution of photosynthetic eukaryotes. ZEP genes have only been found in Viridiplantae and chromalveolate algae with secondary plastids of red algal ancestry, suggesting that ZEP evolved in the Viridiplantae and spread to chromalveolates by lateral gene transfer. By searching publicly available sequence data from 11 red algae covering all currently recognized red algal classes we identified ZEP candidates in three species. Phylogenetic analyses showed that the red algal ZEP is most closely related to ZEP proteins from photosynthetic chromalveolates possessing secondary plastids of red algal origin. Its enzymatic activity was assessed by high performance liquid chromatography (HPLC) analyses of red algal pigment extracts and by cloning and functional expression of the ZEP gene from Madagascaria erythrocladioides in leaves of the ZEP-deficient aba2 mutant of Nicotiana plumbaginifolia. Unlike other ZEP enzymes examined so far, the red algal ZEP introduces only a single epoxy group into zeaxanthin, yielding antheraxanthin instead of violaxanthin. The results indicate that ZEP evolved before the split of Rhodophyta and Viridiplantae and that chromalveolates acquired ZEP from the red algal endosymbiont and not by lateral gene transfer. Moreover, the red algal ZEP enables engineering of transgenic plants incorporating antheraxanthin instead of violaxanthin in their photosynthetic machinery.
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Affiliation(s)
- Oliver Dautermann
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, Johannes-von-Müller-Weg 6, 55128, Mainz, Germany
| | - Martin Lohr
- Institut für Molekulare Physiologie, Pflanzenbiochemie, Johannes Gutenberg-Universität, Johannes-von-Müller-Weg 6, 55128, Mainz, Germany
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22
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Huang JJ, Lin S, Xu W, Cheung PCK. Occurrence and biosynthesis of carotenoids in phytoplankton. Biotechnol Adv 2017; 35:597-618. [DOI: 10.1016/j.biotechadv.2017.05.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 04/13/2017] [Accepted: 05/11/2017] [Indexed: 01/08/2023]
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23
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Lao YM, Jin H, Zhou J, Zhang HJ, Cai ZH. Functional Characterization of a Missing Branch Component in Haematococcus pluvialis for Control of Algal Carotenoid Biosynthesis. FRONTIERS IN PLANT SCIENCE 2017; 8:1341. [PMID: 28824677 PMCID: PMC5539077 DOI: 10.3389/fpls.2017.01341] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 07/18/2017] [Indexed: 05/31/2023]
Abstract
Cyclization of acyclic lycopene by cyclases marks an important regulatory point in carotenoid biosynthesis. Though some algal lycopene epsilon cyclases (LCYEs) have been predicted computationally, very few have been functionally identified. Little is known about the regulation mechanisms of algal LCYEs. Recent comparative genomic analysis suggested that Haematococcus pluvialis contained only the β type cyclase (HpLCYB). However, in this study, carotenoid profiling found trace α-carotene in the salt-treated cells, indicating the in vivo activity of HpLCYE, a missing component for α-branch carotenoids. Thus, genes coding for HpLCYB and HpLCYE were isolated and functionally complemented in Escherichia coli. Substrate specificity assays revealed an exclusive cyclization order of HpLCYE to HpLCYB for the biosynthesis of heterocyclic carotenoids. Expression pattern studies and bioinformatic analysis of promoter regions showed that both cyclases were differentially regulated by the regulatory cis-acting elements in promoters to correlate with primary and secondary carotenoid biosynthesis under environmental stresses. Characterization of the branch components in algal carotenoid biosynthesis revealed a mechanism for control of metabolic flux into α- and β-branch by the competition and cooperation between HpLCYE and HpLCYB; and supplied a promising route for molecular breeding of cyclic carotenoid biosynthesis.
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Affiliation(s)
- Yong M. Lao
- Shenzhen Public Platform of Screening and Application of Marine Microbial ResourcesGuangdong, China
- The Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua UniversityShenzhen, China
| | - Hui Jin
- Shenzhen Public Platform of Screening and Application of Marine Microbial ResourcesGuangdong, China
- The Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua UniversityShenzhen, China
- School of Life Sciences, Tsinghua UniversityBeijing, China
| | - Jin Zhou
- Shenzhen Public Platform of Screening and Application of Marine Microbial ResourcesGuangdong, China
- The Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua UniversityShenzhen, China
| | - Huai J. Zhang
- School of Life Sciences, Tsinghua UniversityBeijing, China
| | - Zhong H. Cai
- Shenzhen Public Platform of Screening and Application of Marine Microbial ResourcesGuangdong, China
- The Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua UniversityShenzhen, China
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Hagel JM, Facchini PJ. Tying the knot: occurrence and possible significance of gene fusions in plant metabolism and beyond. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:4029-4043. [PMID: 28521055 DOI: 10.1093/jxb/erx152] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Gene fusions have recently attracted attention especially in the field of plant specialized metabolism. The occurrence of a gene fusion, in which originally separate gene products are combined into a single polypeptide, often corresponds to the functional association of individual components within a single metabolic pathway. Examples include gene fusions implicated in benzylisoquinoline alkaloid (BIA), terpenoid, and amino acid biosynthetic pathways, in which distinct domains within a fusion catalyze consecutive, yet independent reactions. Both genomic and transcriptional mechanisms result in the fusion of gene products, which can include partial or complete domain repeats and extensive domain shuffling as evident in the BIA biosynthetic enzyme norcoclaurine synthase. Artificial gene fusions are commonly deployed in attempts to engineer new or improved pathways in plants or microorganisms, based on the premise that fusions are advantageous. However, a survey of functionally characterized fusions in microbial systems shows that the functional impact of fused gene products is not straightforward. For example, whereas enzyme fusions might facilitate the metabolic channeling of unstable intermediates, this channeling can also occur between tightly associated independent enzymes. The frequent occurrence of both fused and unfused enzymes in plant and microbial metabolism adds additional complexity, in terms of both pathway functionality and evolution.
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Affiliation(s)
- Jillian M Hagel
- Department of Biological Sciences, University of Calgary, 2500 University Dr N.W., Alberta T2N 1N4, Canada
| | - Peter J Facchini
- Department of Biological Sciences, University of Calgary, 2500 University Dr N.W., Alberta T2N 1N4, Canada
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Cao TJ, Huang XQ, Qu YY, Zhuang Z, Deng YY, Lu S. Cloning and Functional Characterization of a Lycopene β-Cyclase from Macrophytic Red Alga Bangia fuscopurpurea. Mar Drugs 2017; 15:E116. [PMID: 28398223 PMCID: PMC5408262 DOI: 10.3390/md15040116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 03/16/2017] [Accepted: 03/29/2017] [Indexed: 11/21/2022] Open
Abstract
Lycopene cyclases cyclize the open ends of acyclic lycopene (ψ,ψ-carotene) into β- or ε-ionone rings in the crucial bifurcation step of carotenoid biosynthesis. Among all carotenoid constituents, β-carotene (β,β-carotene) is found in all photosynthetic organisms, except for purple bacteria and heliobacteria, suggesting a ubiquitous distribution of lycopene β-cyclase activity in these organisms. In this work, we isolated a gene (BfLCYB) encoding a lycopene β-cyclase from Bangia fuscopurpurea, a red alga that is considered to be one of the primitive multicellular eukaryotic photosynthetic organisms and accumulates carotenoid constituents with both β- and ε-rings, including β-carotene, zeaxanthin, α-carotene (β,ε-carotene) and lutein. Functional complementation in Escherichia coli demonstrated that BfLCYB is able to catalyze cyclization of lycopene into monocyclic γ-carotene (β,ψ-carotene) and bicyclic β-carotene, and cyclization of the open end of monocyclic δ-carotene (ε,ψ-carotene) to produce α-carotene. No ε-cyclization activity was identified for BfLCYB. Sequence comparison showed that BfLCYB shares conserved domains with other functionally characterized lycopene cyclases from different organisms and belongs to a group of ancient lycopene cyclases. Although B. fuscopurpurea also synthesizes α-carotene and lutein, its enzyme-catalyzing ε-cyclization is still unknown.
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Affiliation(s)
- Tian-Jun Cao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
| | - Xing-Qi Huang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
| | - Yuan-Yuan Qu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
| | - Zhong Zhuang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
| | - Yin-Yin Deng
- Jiangsu Institute of Oceanology and Marine Fisheries, Nantong 226007, China.
| | - Shan Lu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
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26
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Blatt A, Lohr M. Extraction and Analysis of Carotenoids from Escherichia coli in Color Complementation Assays. Bio Protoc 2017; 7:e2179. [PMID: 34458489 DOI: 10.21769/bioprotoc.2179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/20/2016] [Accepted: 02/18/2017] [Indexed: 11/02/2022] Open
Abstract
A common method to investigate the function of genes putatively involved in carotenoid biosynthesis is the so called color complementation assay in Escherichia coli (see, e.g., Cunningham and Gantt, 2007). In this assay, the gene under investigation is expressed in E. coli strains genetically engineered to synthesize potential carotenoid substrates, followed by analysis of the pigment changes in the carotenogenic bacteria via high-performance liquid chromatography (HPLC). Two crucial steps in this method are (i) the quantitative extraction of the carotenoids out of E. coli and (ii) the reproducible and complete separation of the pigments by HPLC. Here, we present a protocol for the extraction and analysis of carotenoids with a broad range of polarities from carotenogenic E. coli. The solvent mixture used for extraction keeps both the lipophilic carotenes and the more polar xanthophylls in solution and is compatible with the eluent gradient of the subsequent HPLC analysis. The C30-column used is particularly suitable for the separation of various cis-isomers of carotenoids, but also for separation of stereoisomers such as α- and β-carotene or lutein and zeaxanthin.
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Affiliation(s)
- Andreas Blatt
- Institut für Molekulare Physiologie - Pflanzenbiochemie, Johannes Gutenberg-Universität, Mainz, Germany
| | - Martin Lohr
- Institut für Molekulare Physiologie - Pflanzenbiochemie, Johannes Gutenberg-Universität, Mainz, Germany
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27
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Fu W, Chaiboonchoe A, Khraiwesh B, Nelson DR, Al-Khairy D, Mystikou A, Alzahmi A, Salehi-Ashtiani K. Algal Cell Factories: Approaches, Applications, and Potentials. Mar Drugs 2016; 14:md14120225. [PMID: 27983586 PMCID: PMC5192462 DOI: 10.3390/md14120225] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/02/2016] [Accepted: 12/05/2016] [Indexed: 12/26/2022] Open
Abstract
With the advent of modern biotechnology, microorganisms from diverse lineages have been used to produce bio-based feedstocks and bioactive compounds. Many of these compounds are currently commodities of interest, in a variety of markets and their utility warrants investigation into improving their production through strain development. In this review, we address the issue of strain improvement in a group of organisms with strong potential to be productive “cell factories”: the photosynthetic microalgae. Microalgae are a diverse group of phytoplankton, involving polyphyletic lineage such as green algae and diatoms that are commonly used in the industry. The photosynthetic microalgae have been under intense investigation recently for their ability to produce commercial compounds using only light, CO2, and basic nutrients. However, their strain improvement is still a relatively recent area of work that is under development. Importantly, it is only through appropriate engineering methods that we may see the full biotechnological potential of microalgae come to fruition. Thus, in this review, we address past and present endeavors towards the aim of creating productive algal cell factories and describe possible advantageous future directions for the field.
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Affiliation(s)
- Weiqi Fu
- Division of Science and Math, New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
| | - Amphun Chaiboonchoe
- Division of Science and Math, New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
| | - Basel Khraiwesh
- Center for Genomics and Systems Biology (CGSB), New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
| | - David R Nelson
- Center for Genomics and Systems Biology (CGSB), New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
| | - Dina Al-Khairy
- Division of Science and Math, New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
| | - Alexandra Mystikou
- Division of Science and Math, New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
| | - Amnah Alzahmi
- Center for Genomics and Systems Biology (CGSB), New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
| | - Kourosh Salehi-Ashtiani
- Division of Science and Math, New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
- Center for Genomics and Systems Biology (CGSB), New York University Abu Dhabi, P.O. Box 129188 Saadiyat Island, Abu Dhabi, UAE.
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