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Xie ZT, Mi BQ, Lu YJ, Chen MT, Ye ZW. Research progress on carotenoid production by Rhodosporidium toruloides. Appl Microbiol Biotechnol 2024; 108:7. [PMID: 38170311 DOI: 10.1007/s00253-023-12943-0] [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: 08/08/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 01/05/2024]
Abstract
Carotenoids are natural lipophilic pigments, which have been proven to provide significant health benefits to humans, relying on their capacity to efficiently scavenge singlet oxygen and peroxyl radicals as antioxidants. Strains belonging to the genus Rhodosporidium represent a heterogeneous group known for a number of phenotypic traits including accumulation of carotenoids and lipids and tolerance to heavy metals and oxidative stress. As a representative of these yeasts, Rhodosporidium toruloides naturally produces carotenoids with high antioxidant activity and grows on a wide variety of carbon sources. As a result, R. toruloides is a promising host for the efficient production of more value-added lipophilic compound carotenoids, e.g., torulene and torularhodin. This review provides a comprehensive summary of the research progress on carotenoid biosynthesis in R. toruloides, focusing on the understanding of biosynthetic pathways and the regulation of key enzymes and genes involved in the process. Moreover, the relationship between the accumulation of carotenoids and lipid biosynthesis, as well as the stress from diverse abiotic factors, has also been discussed for the first time. Finally, several feasible strategies have been proposed to promote carotenoid production by R. toruloides. It is possible that R. toruloides may become a critical strain in the production of carotenoids or high-value terpenoids by genetic technologies and optimal fermentation processes. KEY POINTS: • Biosynthetic pathway and its regulation of carotenoids in Rhodosporidium toruloides were concluded • Stimulation of abiotic factors for carotenoid biosynthesis in R. toruloides was summarized • Feasible strategies for increasing carotenoid production by R. toruloides were proposed.
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Affiliation(s)
- Zhuo-Ting Xie
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, 510642, China
| | - Bing-Qian Mi
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Yong-Jun Lu
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Mou-Tong Chen
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Guangdong Provincial Key Laboratory of Microbial Safety and Health, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China.
| | - Zhi-Wei Ye
- College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
- Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, 510642, China.
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2
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Chen HH, Wu JX, Huang R, Dai JL, Liang MH, Jiang JG. Enhancing astaxanthin accumulation through the expression of the plant-derived astaxanthin biosynthetic pathway in Dunaliella salina. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108697. [PMID: 38705045 DOI: 10.1016/j.plaphy.2024.108697] [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: 01/26/2024] [Revised: 04/18/2024] [Accepted: 05/01/2024] [Indexed: 05/07/2024]
Abstract
Dunaliella salina, a microalga that thrives under high-saline conditions, is notable for its high β-carotene content and the absence of a polysaccharide cell wall. These unique characteristics render it a prime candidate as a cellular platform for astaxanthin production. In this study, our initial tests in an E. coli revealed that β-ring-4-dehydrogenase (CBFD) and 4-hydroxy-β-ring-4-dehydrogenase (HBFD) genes from Adonis aestivalis outperformed β-carotene hydroxylase (BCH) and β-carotene ketolase (BKT) from Haematococcus pluvialis counterparts by two-fold in terms of astaxanthin biosynthesis efficiency. Subsequently, we utilized electroporation to integrate either the BKT gene or the CBFD and HBFD genes into the genome of D. salina. In comparison to wild-type D. salina, strains transformed with BKT or CBFD and HBFD exhibited inhibited growth, underwent color changes to shades of red and yellow, and saw a nearly 50% decline in cell density. HPLC analysis confirmed astaxanthin synthesis in engineered D. salina strains, with CBFD + HBFD-D. salina yielding 134.88 ± 9.12 μg/g of dry cell weight (DCW), significantly higher than BKT-D. salina (83.58 ± 2.40 μg/g). This represents the largest amount of astaxanthin extracted from transgenic D. salina, as reported to date. These findings have significant implications, opening up new avenues for the development of specialized D. salina-based microcell factories for efficient astaxanthin production.
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Affiliation(s)
- Hao-Hong Chen
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China; Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Jing-Xuan Wu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Rui Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jv-Liang Dai
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Ming-Hua Liang
- School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Jian-Guo Jiang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
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3
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Chen D, Li Z, Shi J, Suen H, Zheng X, Zhang C, Chen Y, Xue T. Genomics and transcriptomics reveal β-carotene synthesis mechanism in Dunaliella salina. Front Microbiol 2024; 15:1389224. [PMID: 38827145 PMCID: PMC11140103 DOI: 10.3389/fmicb.2024.1389224] [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: 02/21/2024] [Accepted: 05/07/2024] [Indexed: 06/04/2024] Open
Abstract
Dunaliella salina is by far the most salt-tolerant organism and contains many active substances, including β-carotene, glycerol, proteins, and vitamins, using in the production of dried biomass or cell extracts for the biofuels, pharmaceutical formulations, food additives, and fine chemicals, especially β-carotene. We report a high-quality genome sequence of D. Salina FACHB435, which has a 472 Mb genome size, with a contig N50 of 458 Kb. A total of 30,752 protein-coding genes were predicted. The annotation results evaluated by BUSCO was shown that completeness was 91.0% and replication was 53.1%. The fragments were 6.3% and the deletions were 2.6%. Phylogenomic and comparative genomic analyses revealed that A. thaliana diverged from Volvocales about 448 million years ago, then Volvocales C. eustigma, D. salina, and other species diverged about 250 million years ago. High light could promote the accumulation of β-carotene in D. salina at a 13 d stage of culture. The enrichment of DEGs in KEGG, it notes that the predicted up-regulated genes of carotenoid metabolic pathway include DsCrtB, DsPDS, DsZ-ISO, DsZDS, DsCRTISO, DsLUT5, DsCrtL-B, and DsCCD8, while the predicted down-regulated genes include DsCrtF, and DsLUT1. The four genes that were both up-regulated and down-regulated were DsZEP, DsCrtR-b, DsCruA/P and DsCrtZ 4. The research results can provide scientific basis for the industrialization practice of D. salina.
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Affiliation(s)
- Duo Chen
- The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Products of the State Oceanic Administration, Fujian Key Laboratory of Special Marine Bioresource Sustainable Utilization, Center of Engineering Technology Research for Microalga Germplasm Improvement of Fujian, Southern Institute of Oceanography, Fujian Normal University, Fuzhou, China
| | | | | | | | | | | | | | - Ting Xue
- The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Products of the State Oceanic Administration, Fujian Key Laboratory of Special Marine Bioresource Sustainable Utilization, Center of Engineering Technology Research for Microalga Germplasm Improvement of Fujian, Southern Institute of Oceanography, Fujian Normal University, Fuzhou, China
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Matos ÂP, Saldanha-Corrêa FMP, Gomes RDS, Hurtado GR. Exploring microalgal and cyanobacterial metabolites with antiprotozoal activity against Leishmania and Trypanosoma parasites. Acta Trop 2024; 251:107116. [PMID: 38159713 DOI: 10.1016/j.actatropica.2023.107116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/27/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
Neglected tropical diseases (NTD) like Leishmaniasis and trypanosomiasis affect millions of people annually, while currently used antiprotozoal drugs have serious side effects. Drug research based on natural products has shown that microalgae and cyanobacteria are a promising platform of biochemically active compounds with antiprotozoal activity. These unicellular photosynthetic organisms are rich in polyunsaturated fatty acids, pigments including phycocyanin, chlorophylls and carotenoids, polyphenols, bioactive peptides, terpenes, alkaloids, which have proven antioxidant, antimicrobial, antiviral, antiplasmodial and antiprotozoal properties. This review provides up-to-date information regarding ongoing studies on substances synthesized by microalgae and cyanobacteria with notable activity against Leishmania spp., Trypanosoma cruzi, and Trypanosoma brucei, the causative agents of Leishmaniasis, Chagas disease, and human African trypanosomiasis, respectively. Extracts of several freshwater or marine microalgae have been tested on different strains of Leishmania and Trypanosoma parasites. For instance, ethanolic extract of Chlamydomonas reinhardtii and Tetraselmis suecica have biological activity against T. cruzi, due to their high content of carotenoids, chlorophylls, phenolic compounds and flavonoids that are associated with trypanocidal activity. Halophilic Dunaliella salina showed moderate antileishmanial activity that may be attributed to the high β-carotene content in this microalga. Peptides such as almiramides, dragonamides, and herbamide that are biosynthesized by marine cyanobacteria Lyngbya majuscula were found to have increased activity in micromolar scale IC50 against L. donovani, T. Cruzi, and T. brucei parasites. The cyanobacterial peptides symplocamide and venturamide isolated from Symploca and Oscillatoria species, respectively, and the alkaloid nostocarbonile isolated from Nostoc have shown promising antiprotozoal properties and are being explored for pharmaceutical and medicinal purposes. The discovery of new molecules from microalgae and cyanobacteria with therapeutic potential against Leishmaniasis and trypanosomiasis may address an urgent medical need: effective and safe treatments of NTDs.
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Affiliation(s)
- Ângelo Paggi Matos
- Institute for Advanced Studies of Ocean, São Paulo State University (UNESP), Rodovia Presidente Dutra Km 138, Eugênio de Melo, São José dos Campos 12247-004, Brazil.
| | | | - Roberto da Silva Gomes
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58105, United States
| | - Gabriela Ramos Hurtado
- Institute for Advanced Studies of Ocean, São Paulo State University (UNESP), Rodovia Presidente Dutra Km 138, Eugênio de Melo, São José dos Campos 12247-004, Brazil; Institute of Science and Technology, São Paulo State University (UNESP), Rodovia Presidente Dutra Km 138, Eugênio de Melo, São José dos Campos 12247-004, Brazil.
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Tripathi G, Dubey P, Ahmad S, Farooqui A, Mishra V. Role of Algal-derived Bioactive Compounds in Human Health. Recent Pat Biotechnol 2024; 18:190-209. [PMID: 37537776 DOI: 10.2174/1872208317666230623141740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 04/21/2023] [Accepted: 05/17/2023] [Indexed: 08/05/2023]
Abstract
Algae is emerging as a bioresource with high biological potential. Various algal strains have been used in traditional medicines and human diets worldwide. They are a rich source of bioactive compounds like ascorbic acid, riboflavin, pantothenate, biotin, folic acid, nicotinic acid, phycocyanins, gamma-linolenic acid (GLA), adrenic acid (ARA), docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), etc. Beta-carotene, astaxanthin, and phycobiliproteins are different classes of pigments that are found in algae. They possess antioxidant, anti-inflammatory and anticancer properties. The sulfur-coated polysaccharides in algae have been used as an anticancer, antibacterial, and antiviral agent. Scientists have exploited algal-derived bioactive compounds for developing lead molecules against several diseases. Due to the surge in research on bioactive molecules from algae, industries have started showing interest in patenting for the large-scale production of bioactive compounds having applications in sectors like pharmaceuticals, food, and beverage. In the food industry, algae are used as a thickening, gelling, and stabilizing agent. Due to their gelling and thickening characteristics, the most valuable algae products are macroalgal polysaccharides such as agar, alginates, and carrageenan. The high protein, lipid, and nutrient content in microalgae makes it a superfood for aquaculture. The present review aims at describing various non-energy-based applications of algae in pharmaceuticals, food and beverage, cosmetics, and nutraceuticals. This review attempts to analyze information on algal-derived drugs that have shown better potential and reached clinical trials.
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Affiliation(s)
- Gyanendra Tripathi
- Department of Bioengineering, Integral University, Lucknow, Uttar Pradesh, 226026, India
| | - Priyanka Dubey
- Department of Bioengineering, Integral University, Lucknow, Uttar Pradesh, 226026, India
| | - Suhail Ahmad
- Department of Bioengineering, Integral University, Lucknow, Uttar Pradesh, 226026, India
| | - Alvina Farooqui
- Department of Bioengineering, Integral University, Lucknow, Uttar Pradesh, 226026, India
| | - Vishal Mishra
- School of Biochemical Engineering, IIT(BHU), Varanasi 221005, India
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6
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Hamidkhani A, Asgarani E, Saboora A, Ghorbanmehr N, Hejazi MA. Ethanol as a carotenoid production stimulator in Dunaliella salina CCAP 19/18. Folia Microbiol (Praha) 2023; 68:925-937. [PMID: 37213053 DOI: 10.1007/s12223-023-01062-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 05/10/2023] [Indexed: 05/23/2023]
Abstract
Dunaliella salina is a rich source of carotenoids. Carotenoid production is induced under specific conditions, i.e., high light intensity, high salt concentration, nutrient limitation, and suboptimal temperatures in this microalga. The control of environmental factors is vital for high productivity of carotenoids. In this paper, the effect of different ethanol concentrations in combination with nitrogen deficiency was investigated to induce carotenoid production in D. salina CCAP 19/18. Also, some biochemical and molecular parameters were investigated in response to ethanol in the cells. It was shown that ethanol at 0.5% concentration increased cell number but, at 5% concentration, reduced cell viability compared to the control. The highest carotenoid production was achieved at 3% ethanol concentration, which was 1.46 fold higher than the nitrogen deficiency condition. Investigation of the 3 carotenoid biosynthesis genes revealed that their expression levels increased at 3% ethanol concentration, and the phytoene synthase gene was the most upregulated one. Lipid peroxidation increased at both 3% and 5% ethanol concentrations. At 3% concentration, the activity of catalase and superoxide dismutase increased, but no significant changes were seen at 5% ethanol concentration. Peroxidase activity reduced at both 3% and 5% concentrations. Moreover, proline and reducing sugar content increased at 3% concentration while decreased at 5% ethanol concertation. The results showed that at 3% ethanol concentration, higher carotenoid productivity was associated with an increase in other intracellular responses (molecular and biochemical). Ethanol as a controllable element may be beneficial to increase carotenoid production even under inappropriate environmental conditions in D. salina.
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Affiliation(s)
- Aida Hamidkhani
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, IR, Iran.
| | - Ezat Asgarani
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, IR, Iran
| | - Azra Saboora
- Department of Plant Science, Faculty of Biological Sciences, Alzahra University, Tehran, IR, Iran
| | - Nassim Ghorbanmehr
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, IR, Iran
| | - Mohammad A Hejazi
- Department of Food Biotechnology, Agricultural Education and Extension Organization (AREEO), Agricultural Biotechnology Research Institute of Iran, Branch for Northwest & West Region, Tabriz, IR, Iran
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Varghese R, Buragohain T, Banerjee I, Mukherjee R, Penshanwar SN, Agasti S, Ramamoorthy S. The apocarotenoid production in microbial biofactories: An overview. J Biotechnol 2023; 374:5-16. [PMID: 37499877 DOI: 10.1016/j.jbiotec.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/29/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
Carotenoids are a vast group of natural pigments that come in a variety of colors ranging from red to orange. Apocarotenoids are derived from these carotenoids, which are hormones, pigments, retinoids, and volatiles employed in the textiles, cosmetics, pharmaceutical, and food industries. Due to the high commercial value and poor natural host abundance, they are significantly undersupplied. Microbes like Saccharomyces cerevisiae and Escherichia coli act as heterologous hosts for apocarotenoid production. This article briefly reviews categories of apocarotenoids, their biosynthetic pathway commencing from the MVA and MEP, its significance, the tool enzymes for apocarotenoid biosynthesis like CCDs, their biotechnological production in microbial factories, and future perspectives.
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Affiliation(s)
- Ressin Varghese
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Tinamoni Buragohain
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Ishani Banerjee
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Rishyani Mukherjee
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Shraddha Naresh Penshanwar
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Swapna Agasti
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Siva Ramamoorthy
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India.
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Huang D, Liu C, Su M, Zeng Z, Wang C, Hu Z, Lou S, Li H. Enhancement of β-carotene content in Chlamydomonas reinhardtii by expressing bacterium-driven lycopene β-cyclase. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:127. [PMID: 37573357 PMCID: PMC10423417 DOI: 10.1186/s13068-023-02377-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/29/2023] [Indexed: 08/14/2023]
Abstract
β-Carotene is one of the economically important carotenoids, having functions as the antioxidant to remove harmful free radicals and as the precursor for vitamin A and other high-valued xanthophyll such as zeaxanthin and astaxanthin. Lycopene cyclase plays an important role in the branching of β-carotene and α-carotene. Aiming to develop the microalgae with enhanced β-carotene productivity, the CrtY gene from bacterium Pantoea agglomerans was integrated into Chlamydomonas reinhardtii. The lycopene-producing E. coli harboring CrtY gene produced 1.59 times of β-carotene than that harboring DsLcyb1 from Dunaliella salina (a microalga with abundant β-carotene), confirming the superior activity of CrtY on β-carotene biosynthesis. According to the pigment analysis by HPLC, in microalgal transformants that were confirmed by molecular analysis, the expression of CrtY significantly increased β-carotene content from 12.48 mg/g to 30.65 mg/g (dry weight), which is about 2.45-fold changes. It is noted that three out of five transformants have statistically significant higher amount of lutein, even though the increment was 20% in maximum. Besides, no growth defect was observed in the transformants. This is the first report of functional expression of prokaryotic gene in eukaryotic microalgae, which will widen the gene pool targeting carotenoids biosynthesis using microalgae as the factory and thereby provide more opportunity for high-valued products engineering in microalgae.
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Affiliation(s)
- Danqiong Huang
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Chenglong Liu
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Mingshan Su
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Zhiyong Zeng
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Chaogang Wang
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Zhangli Hu
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Sulin Lou
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China.
| | - Hui Li
- Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China.
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Zarekarizi A, Hoffmann L, Burritt DJ. The potential of manipulating light in the commercial production of carotenoids from algae. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.103047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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10
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Hong SJ, Yim KJ, Ryu YJ, Lee CG, Jang HJ, Jung JY, Kim ZH. Improvement of Lutein and Zeaxanthin Production in Mychonastes sp. 247 by Optimizing Light Intensity and Culture Salinity Conditions. J Microbiol Biotechnol 2023; 33:260-267. [PMID: 36474324 PMCID: PMC9998206 DOI: 10.4014/jmb.2211.11006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 12/13/2022]
Abstract
In this study, we sought to improve lutein and zeaxanthin production in Mychonastes sp. 247 and investigated the effect of environmental factors on lutein and zeaxanthin productivity in Mychonastes sp. The basic medium selection and N:P ratio were adjusted to maximize cell growth in one-stage culture, and lutein and zeaxanthin production conditions were optimized using a central composite design for two-stage culture. The maximum lutein production was observed at a light intensity of 60 μE/m2/s and salinity of 0.49%, and the maximum zeaxanthin production was observed at a light intensity of 532 μE/m2/s and salinity of 0.78%. Lutein and zeaxanthin production in the optimized medium increased by up to 2 and 2.6 folds, respectively, compared to that in the basic medium. Based on these results, we concluded that the optimal conditions for lutein and zeaxanthin production are different and that optimization of light intensity and culture salinity conditions may help increase carotenoid production. This study presents a useful and potential strategy for optimizing microalgal culture conditions to improve the productivity of lutein and zeaxanthin, which has applications in the functional food field.
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Affiliation(s)
- Seong-Joo Hong
- Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea.,Industry-Academia Interactive R&E Center for Bioprocess Innovation, Inha University, Incheon 22212, Republic of Korea
| | - Kyung June Yim
- Microbial Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - Young-Jin Ryu
- Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Choul-Gyun Lee
- Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea.,Industry-Academia Interactive R&E Center for Bioprocess Innovation, Inha University, Incheon 22212, Republic of Korea
| | - Hyun-Jin Jang
- Laboratory of Chemical Biology and Genomics, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Ji Young Jung
- Microbial Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - Z-Hun Kim
- Microbial Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
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Nagal S, Raja A, Gupta I, Adin SN, Panda BP. Screening and Development of β-Carotene Enriched Phaffia rhodozyma Cell by Culture Media Engineering. Microbiology (Reading) 2023. [DOI: 10.1134/s002626172210068x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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12
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Chen HH, Liang MH, Ye ZW, Zhu YH, Jiang JG. Engineering the β-Carotene Metabolic Pathway of Microalgae Dunaliella To Confirm Its Carotenoid Synthesis Pattern in Comparison To Bacteria and Plants. Microbiol Spectr 2023; 11:e0436122. [PMID: 36719233 PMCID: PMC10100976 DOI: 10.1128/spectrum.04361-22] [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: 10/26/2022] [Accepted: 12/12/2022] [Indexed: 02/01/2023] Open
Abstract
Dunaliella salina is the most salt-tolerant eukaryote and has the highest β-carotene content, but its carotenoid synthesis pathway is still unclear, especially the synthesis of lycopene, the upstream product of β-carotene. In this study, DsGGPS, DsPSY, DsPDS, DsZISO, DsZDS, DsCRTISO, and DsLYCB genes were cloned from D. salina and expressed in Escherichia coli. A series of carotenoid engineering E. coli strains from phytoene to β-carotene were obtained. ZISO was first identified from Chlorophyta, while CRTISO was first isolated from algae. It was found that DsZISO and DsCRTISO were essential for isomerization of carotenoids in photosynthetic organisms and could not be replaced by photoisomerization, unlike some plants. DsZDS was found to have weak beta cyclization abilities, and DsLYCB was able to catalyze 7,7',9,9'-tetra-cis-lycopene to generate 7,7',9,9'-tetra-cis-β-carotene, which had not been reported before. A new carotenoid 7,7',9,9'-tetra-cis-β-carotene, the beta cyclization product of prolycopene, was discovered. Compared with the bacterial-derived carotenoid synthesis pathway, there is higher specificity and greater efficiency of the carotenoid synthesis pathway in algae. This research experimentally confirmed that the conversion of phytoene to lycopene in D. salina was similar to that of plants and different from bacteria and provided a new possibility for the metabolic engineering of β-carotene. IMPORTANCE The synthesis mode of all trans-lycopene in bacteria and plants is clear, but there are still doubts in microalgae. Dunaliella is the organism with the highest β-carotene content, and plant-type and bacterial-type enzyme genes have been found in its carotenoid metabolism pathway. In this study, the entire plant-type enzyme gene was completely cloned into Escherichia coli, and high-efficiency expression was obtained, which proved that carotenoid synthesis of algae is similar to that of plants. In bacteria, CRT can directly catalyze 4-step continuous dehydrogenation to produce all trans-lycopene. In plants, four enzymes (PDS, ZISO, ZDS, and CRTISO) are involved in this process. Although a carotenoid synthetase similar to that of bacteria has been found in algae, it does not play a major role. This research reveals the evolutionary relationship of carotenoid metabolism in bacteria, algae, and plants and is of methodologically innovative significance for molecular evolution research.
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Affiliation(s)
- Hao-Hong Chen
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Ming-Hua Liang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Zhi-Wei Ye
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yue-Hui Zhu
- Washington University School of Medicine, St. Louis, Missouri, USA
| | - Jian-Guo Jiang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
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13
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Oliveira CYB, Jacob A, Nader C, Oliveira CDL, Matos ÂP, Araújo ES, Shabnam N, Ashok B, Gálvez AO. An overview on microalgae as renewable resources for meeting sustainable development goals. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 320:115897. [PMID: 35947909 DOI: 10.1016/j.jenvman.2022.115897] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/12/2022] [Accepted: 07/23/2022] [Indexed: 05/27/2023]
Abstract
The increased demands and dependence on depleted oil reserves, accompanied by global warming and climate change have driven the world to explore and develop new strategies for global sustainable development. Among sustainable biomass sources, microalgae represent a promising alternative to fossil fuel and can contribute to the achievement of important Sustainable Development Goals (SDGs). This article has reviewed the various applications of microalgal biomass that includes (i) the use in aquaculture and its sustainability; (ii) commercial value and emerging extraction strategies of carotenoids; (iii) biofuels from microalgae and their application in internal combustion engines; (iv) the use and reuse of water in microalgae cultivation; and (v) microalgae biotechnology as a key factor to assist SDGs. The future prospects and challenges on the microalgae circular bio economy, issues with regard to the scale-up and water demand in microalgae cultivation are also highlighted.
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Affiliation(s)
- Carlos Yure B Oliveira
- Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Brazil.
| | - Ashwin Jacob
- School of Mechanical Engineering, Sathyabama Institute of Science and Technology, Chennai, India
| | - Camila Nader
- Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Cicero Diogo L Oliveira
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, Brazil
| | - Ângelo P Matos
- Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, Brazil
| | - Evando S Araújo
- Grupo de Pesquisa em Aplicações de Eletrofiação e Nanotecnologia (GPEA-Nano), Universidade Federal do Vale do São Francisco, Juazeiro, Brazil
| | - Nisha Shabnam
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Czech Republic
| | - Bragadeshwaran Ashok
- Division of Thermal and Automotive, Vellore Institute of Technology, Vellore, India
| | - Alfredo O Gálvez
- Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Brazil
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14
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Liu M, Ding W, Yu L, Shi Y, Liu J. Functional characterization of carotenogenic genes provides implications into carotenoid biosynthesis and engineering in the marine alga Nannochloropsis oceanica. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Patil AD, Kasabe PJ, Dandge PB. Pharmaceutical and nutraceutical potential of natural bioactive pigment: astaxanthin. NATURAL PRODUCTS AND BIOPROSPECTING 2022; 12:25. [PMID: 35794254 PMCID: PMC9259778 DOI: 10.1007/s13659-022-00347-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 05/09/2022] [Indexed: 05/31/2023]
Abstract
Astaxanthin (3,3'-dihydroxy-β,β-carotene-4,4'-dione) is an orange-red, lipophilic keto-carotenoid pigment. It is majorly found in marine ecosystems particularly in aquatic animals such as salmon, shrimp, trout, krill, crayfish, and so on. It is also synthesized in microalgae Heamatococcus pluvialis, Chlorococcum, Chlorella zofingiensis, red yeast Phaffia rhodozyma and bacterium Paracoccus carotinifaciens. Some aquatic and terrestrial creatures regarded as a primary and secondary sources of the astaxanthin producing and accumulating it through their metabolic pathways. Astaxanthin is the powerful antioxidant, nutritional supplement as well as promising therapeutic compound, observed to have activities against different ravaging diseases and disorders. Researchers have reported remarkable bioactivities of astaxanthin against major non-communicable chronic diseases such as cardiovascular diseases, cancer, diabetes, neurodegenerative, and immune disorders. The current review discusses some structural aspects of astaxanthin. It further elaborates its multiple potencies such as antioxidant, anti-inflammatory, anti-proliferative, anti-cancer, anti-obese, anti-diabetic, anti-ageing, anti-TB, anti-viral, anti-COVID 19, neuro-protective, nephro-protective, and fertility-enhancing properties. These potencies make it a more precious entity in the preventions as well as treatments of prevalent systematic diseases and/or disorders. Also, the review is acknowledging and documenting its powerful bioactivities in relation with the pharmaceutical as well as nutraceutical applicability.
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Affiliation(s)
- Apurva D. Patil
- Department of Biochemistry, Shivaji University, Kolhapur, 416004 Maharashtra India
| | - Pramod J. Kasabe
- School of Nanoscience and Biotechnology, Shivaji University, Kolhapur, Maharashtra India
| | - Padma B. Dandge
- Department of Biochemistry, Shivaji University, Kolhapur, 416004 Maharashtra India
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16
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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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17
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Jin Z, Du L, Cheng Q, Jiang Y, Hui C, Xu L, Zhao Y, Jiang H. Physiological and transcriptional responses of Dictyosphaerium sp. under co-exposure of a typical microplastic and nonylphenol. ENVIRONMENTAL RESEARCH 2022; 204:112287. [PMID: 34743805 DOI: 10.1016/j.envres.2021.112287] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/21/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Microplastics (MPs) and nonylphenol (NP) are typical pollutants that are frequently detected in aquatic environments and can pose a risk to aquatic organisms. However, the responses of algae, the producers in aquatic ecosystems, to MP and NP co-exposure have not been extensively investigated. In this study, polystyrene (PS, 50 mg/L) was selected as a representative MP to evaluate its short-term effects on algae treated with NP (4 mg/L). The results showed that PS mitigated the toxicity of NP to algae after 96 h of exposure, as illustrated by the higher cell densities and pigment concentrations, as well as lower extracellular protein contents and better integrity of intracellular structures, in algae subjected to PS + NP treatment compared with those subjected to NP treatment. Moreover, the upregulated expression of genes involved in photosynthesis and downregulated expression of ribosomal genes as well as genes encoding ATPase and antioxidase, analyzed through RNA-sequencing analysis, further indicated the potential repair and defense mechanisms of PS in NP-treated algae.
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Affiliation(s)
- Zhuo Jin
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Linna Du
- Department of Agriculture and Biotechnology, Wenzhou Vocational College of Science and Technology, Wenzhou, 325006, China
| | - Qilu Cheng
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ying Jiang
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Cai Hui
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Ligen Xu
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Yuhua Zhao
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Hui Jiang
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.
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18
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Zhuang D, He N, Khoo KS, Ng EP, Chew KW, Ling TC. Application progress of bioactive compounds in microalgae on pharmaceutical and cosmetics. CHEMOSPHERE 2022; 291:132932. [PMID: 34798100 DOI: 10.1016/j.chemosphere.2021.132932] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 10/31/2021] [Accepted: 11/14/2021] [Indexed: 06/13/2023]
Abstract
Microalgae is an autotrophic organism with fast growth, short reproduction cycle, and strong environmental adaptability. In recent years, microalgae and the bioactive ingredients extracted from microalgae are regarded as potential substitutes for raw materials in the pharmaceutical and the cosmetics industry. In this review, the characteristics and efficacy of the high-value components of microalgae are discussed in detail, along with the sources and extraction technologies of algae used to obtain high-value ingredients are reviewed. Moreover, the latest trends in biotherapy based on high-value algae extracts as materials are discussed. The excellent antioxidant properties of microalgae derivatives are regarded as an attractive replacement for safe and environmentally friendly cosmetics formulation and production. Through further studies, the mechanism of microalgae bioactive compounds can be understood better and reasonable clinical trials conducted can safely conclude the compliance of microalgae-derived drugs or cosmetics to be necessary standards to be marketed.
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Affiliation(s)
- Dingling Zhuang
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Ning He
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China
| | - Kuan Shiong Khoo
- Faculty of Applied Sciences, UCSI University. No. 1, Jalan Menara Gading, UCSI Heights, 56000, Cheras, Kuala Lumpur, Malaysia
| | - Eng-Poh Ng
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, USM, Penang, Malaysia
| | - Kit Wayne Chew
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China; School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900, Sepang, Selangor Darul Ehsan, Malaysia.
| | - Tau Chuan Ling
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
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19
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Ye Y, Ngo HH, Guo W, Chang SW, Nguyen DD, Varjani S, Liu Q, Bui XT, Hoang NB. Bio-membrane integrated systems for nitrogen recovery from wastewater in circular bioeconomy. CHEMOSPHERE 2022; 289:133175. [PMID: 34875297 DOI: 10.1016/j.chemosphere.2021.133175] [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: 09/26/2021] [Revised: 11/24/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Abstract
Wastewater contains a significant amount of recoverable nitrogen. Hence, the recovery of nitrogen from wastewater can provide an option for generating some revenue by applying the captured nitrogen to producing bio-products, in order to minimize dangerous or environmental pollution consequences. The circular bio-economy can achieve greater environmental and economic sustainability through game-changing technological developments that will improve municipal wastewater management, where simultaneous nitrogen and energy recovery are required. Over the last decade, substantial efforts were undertaken concerning the recovery of nitrogen from wastewater. For example, bio-membrane integrated system (BMIS) which integrates biological process and membrane technology, has attracted considerable attention for recovering nitrogen from wastewater. In this review, current research on nitrogen recovery using the BMIS are compiled whilst the technologies are compared regarding their energy requirement, efficiencies, advantages and disadvantages. Moreover, the bio-products achieved in the nitrogen recovery system processes are summarized in this paper, and the directions for future research are suggested. Future research should consider the quality of recovered nitrogenous products, long-term performance of BMIS and economic feasibility of large-scale reactors. Nitrogen recovery should be addressed under the framework of a circular bio-economy.
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Affiliation(s)
- Yuanyao Ye
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, PR China
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia; NTT Institute of Hi-Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Soon Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Dinh Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, Gujarat, 382 010, India
| | - Qiang Liu
- School of Environmental and Chemical Engineering, Shanghai University, No. 99 Shangda Road, Shanghai, 200444, PR China.
| | - Xuan Thanh Bui
- Key Laboratory of Advanced Waste Treatment Technology & Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University Ho Chi Minh (VNU-HCM), Ho Chi Minh City, 700000, Viet Nam
| | - Ngoc Bich Hoang
- NTT Institute of Hi-Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
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20
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Seemashree M, Chauhan V, Sarada R. Phytohormone supplementation mediated enhanced biomass production, lipid accumulation, and modulation of fatty acid profile in Porphyridium purpureum and Dunaliella salina cultures. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2021.102253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Xu L, Gao F, Feng J, Lv J, Liu Q, Nan F, Liu X, Xie S. Relationship between β-Carotene Accumulation and Geranylgeranyl Pyrophosphate Synthase in Different Species of Dunaliella. PLANTS (BASEL, SWITZERLAND) 2021; 11:27. [PMID: 35009031 PMCID: PMC8747272 DOI: 10.3390/plants11010027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
To study the relationship between β-carotene synthesis and geranylgeranyl pyrophosphate synthase (GGPS) activity, 15 species of Dunaliella were used to determine the changes in photosynthetic pigment contents, chlorophyll fluorescence parameters, β-carotene content, and GGPS activity. By observing the morphology and size of 15 species of Dunaliella, D8 has the largest individual algal cell and D9 has the smallest individual. Growth was relatively slow during days one through seven. After about eight days, the cells entered the logarithmic growth period and grew rapidly to a high density. After about 45 days, they entered a mature period, and growth slowed down. The contents of chlorophyll, carotenoids, and β-carotene increased during growth. D1 has the highest accumulation of β-carotene, and GGPS enzyme activity has a positive linear relationship with the β-carotene synthesis content. Phylogenetic analysis showed that the GGPS proteins of the 15 species were highly homologous, and the GGPS protein was not part of the membrane.
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22
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Ren Y, Sun H, Deng J, Huang J, Chen F. Carotenoid Production from Microalgae: Biosynthesis, Salinity Responses and Novel Biotechnologies. Mar Drugs 2021; 19:713. [PMID: 34940712 PMCID: PMC8708220 DOI: 10.3390/md19120713] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/05/2021] [Accepted: 12/10/2021] [Indexed: 01/23/2023] Open
Abstract
Microalgae are excellent biological factories for high-value products and contain biofunctional carotenoids. Carotenoids are a group of natural pigments with high value in social production and human health. They have been widely used in food additives, pharmaceutics and cosmetics. Astaxanthin, β-carotene and lutein are currently the three carotenoids with the largest market share. Meanwhile, other less studied pigments, such as fucoxanthin and zeaxanthin, also exist in microalgae and have great biofunctional potentials. Since carotenoid accumulation is related to environments and cultivation of microalgae in seawater is a difficult biotechnological problem, the contributions of salt stress on carotenoid accumulation in microalgae need to be revealed for large-scale production. This review comprehensively summarizes the carotenoid biosynthesis and salinity responses of microalgae. Applications of salt stress to induce carotenoid accumulation, potentials of the Internet of Things in microalgae cultivation and future aspects for seawater cultivation are also discussed. As the global market share of carotenoids is still ascending, large-scale, economical and intelligent biotechnologies for carotenoid production play vital roles in the future microalgal economy.
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Affiliation(s)
- Yuanyuan Ren
- Institute for Food and Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China;
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; (H.S.); (J.D.)
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Han Sun
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; (H.S.); (J.D.)
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Jinquan Deng
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; (H.S.); (J.D.)
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Junchao Huang
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; (H.S.); (J.D.)
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
| | - Feng Chen
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China; (H.S.); (J.D.)
- Institute for Innovative Development of Food Industry, Shenzhen University, Shenzhen 518060, China
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Ismaiel MMS, El-Ayouty YM, Fathey HA. Disparity of the carotenoids antioxidant properties of wild-type and D-PSY-transgenic Dunaliella parva strains under three environmental stresses. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:2151-2163. [PMID: 34744358 PMCID: PMC8526634 DOI: 10.1007/s12298-021-01077-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/09/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
UNLABELLED Two strains of the halophilic alga Dunaliella parva, a wild type (WT) and a transgenic strain (D-PSY) containing an exogenous phytoene synthase gene (PSY), were used to investigate the growth, carotenoid accumulation, and carotenoid antioxidant properties under nitrogen starvation, cobalt and biochar treatments. D-PSY had higher carotenoid content (1.8 times) compared to the WT. The applied stressors stimulated the carotenoid content of both WT and D-PSY especially. The carotenoids were assayed for the potential antioxidant activities by five different assays. Generally, the antioxidant activities of D-PSY carotenoids were superior to that of WT. The biochar and nitrogen treatments generally enhanced the antioxidant activities of the carotenoids, whereas cobalt came third in this respect. The D-PSY transgenic algal strain has both high carotenoids content and antioxidant properties which enhanced under the relatively lower concentrations of the applied stressors. The results have shown to lead to an accurate application of the transgenic alga as a source of potent antioxidant compounds. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12298-021-01077-0.
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Affiliation(s)
- Mostafa M. S. Ismaiel
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig, 44519 Egypt
| | - Yassin M. El-Ayouty
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig, 44519 Egypt
| | - Hoda A. Fathey
- Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig, 44519 Egypt
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24
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Supercritical fluid (CO2+ethanol) extraction of chlorophylls and carotenoids from Chlorella sorokiniana: COSMO-SAC assisted prediction of properties and experimental approach. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101649] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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25
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A New Shifting Strategy in Flashing Light Based on the Cell Growth Curve to Enhance β-carotene Biosynthesis in Dunaliella salina. Curr Microbiol 2021; 78:2733-2740. [PMID: 34032884 DOI: 10.1007/s00284-021-02542-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 05/12/2021] [Indexed: 10/21/2022]
Abstract
Microalgae Dunaliella salina has been recognized as an effective source of β-carotene. To elevate the productivity of this species, light has been served as an important induction factor, in this regard, a new idea was inspired as designing a red-to-blue wavelength shifting system based on the growth rate and cell behavior. A photobioreactor was exposed to two panels of flashing red and blue LEDs. At the commencement of the stationary phase, the wavelength shifting was applied and red LEDs were replaced with blue ones. Maximum β-carotene content of 10 mg.g-1 was obtained; at least 300% higher than the content in the controlled system (flashing red and blue light to the end of growth).
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26
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Lafarga T, Sánchez‐Zurano A, Morillas‐España A, Acién‐Fernández FG. Extremophile microalgae as feedstock for high‐value carotenoids: A review. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Tomás Lafarga
- Department of Chemical Engineering University of Almería Almería 04120 Spain
| | - Ana Sánchez‐Zurano
- Department of Chemical Engineering University of Almería Almería 04120 Spain
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Challenges and Potential in Increasing Lutein Content in Microalgae. Microorganisms 2021; 9:microorganisms9051068. [PMID: 34063406 PMCID: PMC8156089 DOI: 10.3390/microorganisms9051068] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/09/2021] [Accepted: 05/10/2021] [Indexed: 02/08/2023] Open
Abstract
Research on enhancing lutein content in microalgae has made significant progress in recent years. However, strategies are needed to address the possible limitations of microalgae as practical lutein producers. The capacity of lutein sequestration may determine the upper limit of cellular lutein content. The preliminary estimation presented in this work suggests that the lutein sequestration capacity of the light-harvesting complex (LHC) of microalgae is most likely below 2% on the basis of dry cell weight (DCW). Due to its nature as a structural pigment, higher lutein content might interfere with the LHC in fulfilling photosynthetic functions. Storing lutein in a lipophilic environment is a mechanism for achieving high lutein content but several critical barriers must be overcome such as lutein degradation and access to lipid droplet to be stored through esterification. Understanding the mechanisms underlying lipid droplet biogenesis in chloroplasts, as well as carotenoid trafficking through chloroplast membranes and carotenoid esterification, may provide insight for new approaches to achieve high lutein contents in algae. In the meantime, building the machinery for esterification and sequestration of lutein and other hydroxyl-carotenoids in model microorganisms, such as yeast, with synthetic biology technology provides a promising option.
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Abstract
Since the 1950s, microalgae have been grown commercially in man-made cultivation units and used for biomass production as a source of food and feed supplements, pharmaceuticals, cosmetics and lately biofuels, as well as a means for wastewater treatment and mitigation of atmospheric CO2 build-up. In this work, photosynthesis and growth affecting variables—light intensity, pH, CO2/O2 exchange, nutrient supply, culture turbulence, light/dark cell cycling, biomass density and culture depth (light path)—are reviewed as concerns in microalgae mass cultures. Various photosynthesis monitoring techniques were employed to study photosynthetic performance to optimize the growth of microalgae strains in outdoor cultivation units. The most operative and reliable techniques appeared to be fast-response ones based on chlorophyll fluorescence and oxygen production monitoring, which provide analogous results.
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Zhao Y, Li SL, Chen HY, Zou Y, Zheng QW, Guo LQ, Wu GH, Lu J, Lin JF, Ye ZW. Enhancement of carotenoid production and its regulation in edible mushroom Cordyceps militaris by abiotic stresses. Enzyme Microb Technol 2021; 148:109808. [PMID: 34116757 DOI: 10.1016/j.enzmictec.2021.109808] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/09/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Abstract
Cordyceps militaris carotenoids are widely used as food additives, animal feed supplements, and so on. However, the biosynthetic pathway of carotenoids in C. militaris is still obscure. In this paper, changes of mycelial morphology and carotenoid accumulation of C. militaris were investigated under oxidative (KMnO4) and osmotic stress (NaCl). Subsequently, qRT-PCR was employed to detect the expression levels of genes related to carotenogenesis to explore the mechanism of adaptation to abiotic stress. When the concentrations of KMnO4 and NaCl were respectively 0.4 g/L and 2 g/L, carotenoid accumulation reached a maximum of 6616.82 ± 666.43 μg/g and 6416.77 ± 537.02 μg/g. Under the oxidative stress condition of KMnO4, the expressions of psy and hsp70 increased significantly compared with control. Besides, the genes fus3 and hog1 were significantly enriched in the MAPK signal pathway. Compared with the control group, there was no significant difference in expression of psy in the NaCl group. Moreover, the accumulation of triacylglycerols may contribute significantly to the increase in carotenoid accumulation. The increased accumulation of antioxidant carotenoids induced under environmental stress is to resist oxidative conditions. Fus3 and Hog1 signaling in the MAPK pathway was activated and subsequently take effects on the resistance of oxidative condition by regulating related metabolic processes. C. militaris resist the stress of high oxygen by producing a large amount of glycerol and carotenoids when this fungus is cultured in a saline environment for a long time.
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Affiliation(s)
- Yi Zhao
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China
| | - Shu-Li Li
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China
| | - Hai-Ying Chen
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China
| | - Yuan Zou
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, 510642, China
| | - Qian-Wang Zheng
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, 510642, China
| | - Li-Qiong Guo
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, 510642, China
| | - Guang-Hong Wu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jun Lu
- Faculty of Health & Environmental Sciences, Auckland University of Technology, Auckland, 1142, New Zealand
| | - Jun-Fang Lin
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, 510642, China.
| | - Zhi-Wei Ye
- College of Food Science & Institute of Food Biotechnology, South China Agricultural University, Guangzhou, 510642, China; Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, 510642, China.
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Peng J, Guo J, Lei Y, Mo J, Sun H, Song J. Integrative analyses of transcriptomics and metabolomics in Raphidocelis subcapitata treated with clarithromycin. CHEMOSPHERE 2021; 266:128933. [PMID: 33223212 DOI: 10.1016/j.chemosphere.2020.128933] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/04/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
As a macrolide antibiotic, clarithromycin (CLA) has a high detection rate in surface water and sewage treatment plant effluents worldwide, posing a considerably high ecological risk to aquatic ecosystem. However, algal transcriptome and metabolome in response to CLA remains largely unknown. In this study, a model alga Raphidocelis subcapitata (R. subcapitata), was exposed to CLA at the concentrations of 0, 3, 10, and 15 μg L-1. Transcriptomic analysis was performed for all the treatment groups, whereas metabolomics was merely applied to 0, 3, and 10 μg L-1 groups because of the limited amount of algal biomass. After 7 d cultivation, the growth of R. subcapitata was significantly hindered at the concentrations above 10 μg L-1. A total of 115, 1833, 2911 genes were differentially expressed in 3, 10, and 15 μg L-1 groups, respectively; meanwhile, 134 and 84 differentially accumulated metabolites (DAMs) were found in the 3 and 10 μg L-1 groups. Specifically, expression levels of DEGs and DAMs related to xenobiotic metabolism, electron transport and energy synthesis were dysregulated, leading to the produced reactive oxygen species (ROS). To confront the CLA-induced injury, the biosynthesis of unsaturated fatty acids and carotenoids of R. subcapitata in 3 μg L-1 were up-regulated; although the photosynthesis was up-regulated in both 10 μg L-1 and 15 μg L-1 groups, the energy synthesis and the ability to resist ROS in these two groups were down-regulated. Overall, this study shed light on the mechanism underlying the inhibitory effects of macrolide antibiotics in algae.
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Affiliation(s)
- Jianglin Peng
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Jiahua Guo
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China.
| | - Yuan Lei
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Jiezhang Mo
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Haotian Sun
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Jinxi Song
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China.
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Xi Y, Kong F, Chi Z. ROS Induce β-Carotene Biosynthesis Caused by Changes of Photosynthesis Efficiency and Energy Metabolism in Dunaliella salina Under Stress Conditions. Front Bioeng Biotechnol 2021; 8:613768. [PMID: 33520962 PMCID: PMC7844308 DOI: 10.3389/fbioe.2020.613768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 11/25/2020] [Indexed: 11/13/2022] Open
Abstract
The unicellular alga Dunaliella salina is regarded as a promising cell factory for the commercial production of β-carotene due to its high yield of carotenoids. However, the underlying mechanism of β-carotene accumulation is still unclear. In this study, the regulatory mechanism of β-carotene accumulation in D. salina under stress conditions was investigated. Our results indicated that there is a significant positive correlation between the cellular ROS level and β-carotene content, and the maximum quantum efficiency (Fv/Fm) of PSII is negatively correlated with β-carotene content under stress conditions. The increase of ROS was found to be coupled with the inhibition of Fv/Fm of PSII in D. salina under stress conditions. Furthermore, transcriptomic analysis of the cells cultivated with H2O2 supplementation showed that the major differentially expressed genes involved in β-carotene metabolism were upregulated, whereas the genes involved in photosynthesis were downregulated. These results indicated that ROS induce β-carotene accumulation in D. salina through fine-tuning genes which were involved in photosynthesis and β-carotene biosynthesis. Our study provided a better understanding of the regulatory mechanism involved in β-carotene accumulation in D. salina, which might be useful for overaccumulation of carotenoids and other valuable compounds in other microalgae.
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Affiliation(s)
- Yimei Xi
- School of Bioengineering, Dalian University of Technology, Dalian, China
| | - Fantao Kong
- School of Bioengineering, Dalian University of Technology, Dalian, China
| | - Zhanyou Chi
- School of Bioengineering, Dalian University of Technology, Dalian, China
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Effect of Protocatechuic Acid on Euglena gracilis Growth and Accumulation of Metabolites. SUSTAINABILITY 2020. [DOI: 10.3390/su12219158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The development of efficient, environmentally friendly, low-cost approaches used to boost the growth of microalgae is urgently required to meet the increasing demands for food supplements, cosmetics, and biofuels. In this study, the growth promotion effects of protocatechuic acid (PCA) in the freshwater microalga Euglena gracilis were confirmed for the first time. PCA is a simple phenolic compound derived from natural plants and has a range of biological functions. The highest biomass yield, 3.1-fold higher than that of the control, used at 1.3 g·L−1, was obtained at 800 mg·L−1 of PCA. The yields of the metabolites chlorophyll a, carotenoids, and paramylon in the presence of PCA at 800 mg·L−1 were 3.1, 3.3, and 1.7 times higher than those of the control group, respectively. The highest paramylon yield was achieved at a lower dosage of PCA (100 mg·L−1), which is considered to be feasible for economic paramylon production. The growth and biosynthesis of metabolites stimulated by phytochemicals such as PCA could be an efficient and cost-effective strategy to enhance the productivity of microalgae in large-scale cultivations.
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Pigments Production, Growth Kinetics, and Bioenergetic Patterns in Dunaliella tertiolecta (Chlorophyta) in Response to Different Culture Media. ENERGIES 2020. [DOI: 10.3390/en13205347] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This work dealt with the study of growth parameters, pigments production, and bioenergetic aspects of the microalga Dunaliella tertiolecta in different culture media. For this purpose, cultures were carried out in Erlenmeyer flasks containing F/2 medium, Bold’s Basal medium, or an alternative medium made up of the same constituents of the Bold’s Basal medium dissolved in natural seawater instead of distilled water. D. tertiolecta reached the highest dry cell concentration (Xmax = 1223 mgDM·L−1), specific growth rate (µmax = 0.535 d−1), cell productivity (PX = 102 mgDM·L−1·d−1), and photosynthetic efficiency (PE = 14.54%) in the alternative medium, while the highest contents of carotenoids (52.0 mg·g−1) and chlorophyll (108.0 mg·g−1) in the biomass were obtained in Bold’s Basal medium. As for the bioenergetic parameters, the biomass yield on Gibbs energy dissipation was higher and comparable in both seawater-based media. However, the F/2 medium led to the highest values of moles of photons absorbed to produce 1 C-mol of biomass (nPh), total Gibbs energy absorbed by the photosynthesis (ΔGa) and released heat (Q), as well as the lowest cell concentration, thus proving to be the least suitable medium for D. tertiolecta growth. On the other hand, the highest values of molar development of O2 and consumption of H+ and H2O were obtained in the alternative medium, which also ensured the best kinetic parameters, thereby allowing for the best energy exploitation for cell growth. These results demonstrate that composition of culture medium for microalgae cultivation has different effects on pigments production, growth kinetics, and bioenergetics parameters, which should be taken into consideration for any use of biomass, including as raw material for biofuels production.
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Pourkarimi S, Hallajisani A, Alizadehdakhel A, Nouralishahi A, Golzary A. Factors affecting production of beta-carotene from Dunaliella salina microalgae. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101771] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Silva SC, Ferreira ICFR, Dias MM, Barreiro MF. Microalgae-Derived Pigments: A 10-Year Bibliometric Review and Industry and Market Trend Analysis. Molecules 2020; 25:E3406. [PMID: 32731380 PMCID: PMC7435790 DOI: 10.3390/molecules25153406] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 12/23/2022] Open
Abstract
Microalgae productive chains are gaining importance as sustainable alternatives to obtain natural pigments. This work presents a review on the most promising pigments and microalgal sources by gathering trends from a 10-year bibliometric survey, a patents search, and an industrial and market analysis built from available market reports, projects and companies' webpages. The performed analysis pointed out chlorophylls, phycocyanin, astaxanthin, and β-carotene as the most relevant pigments, and Chlorella vulgaris, Spirulina platensis, Haematococcus pluvialis, and Dunaliella salina, respectively, as the most studied sources. Haematococcus is referred in the highest number of patents, corroborating a high technological interest in this microalga. The biorefinery concept, investment in projects and companies related to microalgae cultivation and/or pigment extraction is increasingly growing, particularly, for phycocyanin from Spirulina platensis. These pieces of evidence are a step forward to consolidate the microalgal pigments market, which is expected to grow in the coming years, increasing the prospects of replacing synthetic pigments by natural counterparts.
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Affiliation(s)
- Samara C. Silva
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal; (S.C.S.); (I.C.F.R.F.)
- Laboratory of Separation and Reaction Engineering—Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;
| | - Isabel C. F. R. Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal; (S.C.S.); (I.C.F.R.F.)
| | - Madalena M. Dias
- Laboratory of Separation and Reaction Engineering—Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;
| | - M. Filomena Barreiro
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal; (S.C.S.); (I.C.F.R.F.)
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Zarandi-Miandoab L, Hejazi MA, Bagherieh-Najjar MB, Chaparzadeh N. Optimization of the Four Most Effective Factors on β-Carotene Production by Dunaliella salina Using Response Surface Methodology. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2020; 18:1566-1579. [PMID: 32641964 PMCID: PMC6934969 DOI: 10.22037/ijpr.2019.1100752] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
During recent years, there was growing demand in using microalga valuable products such as β-carotene in health care. β-Carotene has anti-cancer and anti-aging properties for human. In Dunaliella salina cells, β-carotene has a major protecting role for biomolecules, when the production of reactive oxygen species is elevated. In the present study, we investigated the influence of the four most effective factors (light intensity, temperature, nitrate and salinity concentration) and their interactions on the β-carotene production and the total chlorophyll/β-carotene ratio in low light adapted D. salina cells. Box-Benken design and response surface methodology (RSM) were used for this purpose and optimization of the factor levels. Two models were developed to explain how β-carotene productivity and the total chlorophyll/β-carotene ratio may depend on the stress factors. Among the four stress variables for β-carotene production, light intensity was stronger than the others. Meanwhile, interaction between light intensity and salt concentration exhibited the most important effect on the total chlorophyll/ β-carotene ratio. The predicted optimal conditions for maximum β-carotene productivity and minimum total chlorophyll/β-carotene ratio were derived from the fitted model in 200 µmol photons m-2s-1 light intensity, 25 ºC, 0.9 mM nitrate and 3.8 M NaCl. When the predicted condition was tested experimentally, the expected results were observed. This suggests that overproduction of β-carotene in D. salina under certain conditions depends on used light intensity for preadaptation. The step-wise manner applying of stresses may act as a beneficial strategy to β-carotene overproduction.
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Affiliation(s)
- Leila Zarandi-Miandoab
- Department of Biology, Azarbaijan Shahid Madani University, Tabriz, Iran.,Department of Biology, Faculty of Sciences, Golestan University, Gorgan, Iran
| | - Mohammad-Amin Hejazi
- Department of Food Biotechnology, Branch for Northwest & West region, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran
| | | | - Nader Chaparzadeh
- Department of Biology, Azarbaijan Shahid Madani University, Tabriz, Iran
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Lou S, Zhu X, Zeng Z, Wang H, Jia B, Li H, Hu Z. Identification of microRNAs response to high light and salinity that involved in beta-carotene accumulation in microalga Dunaliella salina. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101925] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fang L, Zhang J, Fei Z, Wan M. Astaxanthin accumulation difference between non-motile cells and akinetes of Haematococcus pluvialis was affected by pyruvate metabolism. BIORESOUR BIOPROCESS 2020. [DOI: 10.1186/s40643-019-0293-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Haematococcus pluvialis is the best source of natural astaxanthin, known as the king of antioxidants. H. pluvialis have four cell forms: spore, motile cell, non-motile cell and akinete. Spores and motile cells are susceptible to photoinhibition and would die under photoinduction conditions. Photoinduction using non-motile cells as seeds could result in a higher astaxanthin production than that using akinetes. However, the mechanism of this phenomenon has not been clarified.
Results
Transcriptome was sequenced and annotated to illustrate the mechanism of this phenomenon. All differentially expressed genes involved in astaxanthin biosynthesis were up-regulated. Particularly, chyb gene was up-regulated by 16-fold, improving the conversion of β-carotene into astaxanthin. Pyruvate was the precursor of carotenoids biosynthesis. Pyruvate kinase gene expression level was increased by 2.0-fold at the early stage of akinetes formation. More changes of gene transcription occurred at the early stage of akinetes formation, 52.7% and 51.9% of total DEGs in control group and treatment group, respectively.
Conclusions
Genes transcription network was constructed and the synthesis mechanism of astaxanthin was clarified. The results are expected to further guide the in-depth optimization of the astaxanthin production process in H. pluvialis by improving pyruvate metabolism.
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Salinity Stress Responses and Adaptation Mechanisms in Eukaryotic Green Microalgae. Cells 2019; 8:cells8121657. [PMID: 31861232 PMCID: PMC6952985 DOI: 10.3390/cells8121657] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/02/2019] [Accepted: 12/12/2019] [Indexed: 01/04/2023] Open
Abstract
High salinity is a challenging environmental stress for organisms to overcome. Unicellular photosynthetic microalgae are especially vulnerable as they have to grapple not only with ionic imbalance and osmotic stress but also with the generated reactive oxygen species (ROS) interfering with photosynthesis. This review attempts to compare and contrast mechanisms that algae, particularly the eukaryotic Chlamydomonas microalgae, exhibit in order to immediately respond to harsh conditions caused by high salinity. The review also collates adaptation mechanisms of freshwater algae strains under persistent high salt conditions. Understanding both short-term and long-term algal responses to high salinity is integral to further fundamental research in algal biology and biotechnology.
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Carotenoids Overproduction in Dunaliella Sp.: Transcriptional Changes and New Insights through Lycopene β Cyclase Regulation. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9245389] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dunaliella is a green microalga known for its ability to produce high levels of carotenoids under well-defined growing conditions. Molecular responses to the simultaneous effect of increasing salinity, light intensity and decrease of nitrogen availability were investigated in terms of their effect on different metabolic pathways (isoprenoids synthesis, glycolysis, carbohydrate use, etc.) by following the transcriptional regulation of enolase (ENO), 1-deoxy-D-xylulose 5-phosphate synthase (DXS), lycopene β-cyclase (LCYB), carotene globule protein (CGP), chloroplast-localized heat shock protein (HSP70), and chloroplast ribulose phosphate-3-epimerase (RPE) genes. The intracellular production of carotenoid was increased five times in stressed Dunaliella cells compared to those grown in an unstressed condition. At transcriptional levels, ENO implicated in glycolysis, and revealing about polysaccharides degradation, showed a two-stage response during the first 72 h. Genes directly involved in β-carotene accumulation, namely, CGP and LCYB, revealed the most important increase by about 54 and 10 folds, respectively. In silico sequence analysis, along with 3D modeling studies, were performed to identify possible posttranslational modifications of CGP and LCYB proteins. Our results described, for the first time, their probable regulation by sumoylation covalent attachment as well as the presence of expressed SUMO (small ubiquitin-related modifier) protein in Dunaliella sp.
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Pereira S, Otero A. Effect of light quality on carotenogenic and non-carotenogenic species of the genus Dunaliella under nitrogen deficiency. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101725] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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A cost-effective and environmentally sustainable process for phycoremediation of oil field formation water for its safe disposal and reuse. Sci Rep 2019; 9:15232. [PMID: 31645605 PMCID: PMC6811566 DOI: 10.1038/s41598-019-51806-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 10/07/2019] [Indexed: 11/22/2022] Open
Abstract
High volumes of formation water comprising of complex mixture of hydrocarbons is generated during crude oil exploration. Owing to ecotoxicological concerns, the discharge of the formation water without remediation of hydrocarbonaceous pollutants is not permitted. Keeping this into mind, we carried out phycoremediation of hydrocarbons in formation water so that it can be safely discharged or re-used. For this, a native algal species was isolated from formation water followed by its morphological and 18S ribosomal RNA based identification confirming the algal isolate to be Chlorella vulgaris BS1 (NCBI GenBank Accession No. MH732950). The algal isolate exhibited high biomass productivity of 1.76 gm L−1 d−1 (specific growth rate: 0.21 d−1, initial inoculum: 1500 mg L−1) along with remediation of 98.63% petroleum hydrocarbons present in formation water within 14 days of incubation indicating an efficient hydrocarbon remediation process. Concomitantly, the hydrocarbon remediation process resulted in reduction of 75% Chemical Oxygen Demand (COD) load and complete removal of sulfate from formation water making it suitable for safe disposal or reuse as oil well injection water respectively. The present process overcomes the bottlenecks of external growth nutrient addition or dilution associated with conventional biological treatment resulting in a practically applicable and cost-effective technology for remediation of oil field formation water.
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Liu F, Lane P, Hewson JC, Stavila V, Tran-Gyamfi MB, Hamel M, Lane TW, Davis RW. Development of a closed-loop process for fusel alcohol production and nutrient recycling from microalgae biomass. BIORESOURCE TECHNOLOGY 2019; 283:350-357. [PMID: 30933901 DOI: 10.1016/j.biortech.2019.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 06/09/2023]
Abstract
Improving the economic feasibility is necessary for algae-based processes to achieve commercial scales for biofuels and bioproducts production. A closed-loop system for fusel alcohol production from microalgae biomass with integrated nutrient recycling was developed, which enables the reuse of nitrogen and phosphorus for downstream application and thus reduces the operational requirement for external major nutrients. Mixed fusel alcohols, primarily isobutanol and isopentanol were produced from Microchloropsis salina hydrolysates by an engineered E. coli co-culture. During the process, cellular nitrogen from microalgae biomass was converted into ammonium, whereas cellular phosphorus was liberated by an osmotic shock treatment. The formation of struvite from the liberated ammonium and phosphate, and the subsequent utilization of struvite to support M. salina cultivation was demonstrated. The closed loop system established here should help overcome one of the identified economic barriers to scale-up of microalgae production, and enhance the sustainability of microalgae-based chemical commodities production.
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Affiliation(s)
- Fang Liu
- Department of Biomass Science & Conversion Technologies, Sandia National Laboratories, Livermore, CA 94550, USA
| | - Pamela Lane
- Department of Systems Biology, Sandia National Laboratories, Livermore, CA 94550, USA
| | - John C Hewson
- Department of Fire Science and Technology, Sandia National Laboratories, Livermore, CA 94550, USA
| | - Vitalie Stavila
- Department of Energy Nanomaterials, Sandia National Laboratories, Livermore, CA 94550, USA
| | - Mary B Tran-Gyamfi
- Department of Biomass Science & Conversion Technologies, Sandia National Laboratories, Livermore, CA 94550, USA
| | - Michele Hamel
- Department of Biomass Science & Conversion Technologies, Sandia National Laboratories, Livermore, CA 94550, USA
| | - Todd W Lane
- Department of Systems Biology, Sandia National Laboratories, Livermore, CA 94550, USA
| | - Ryan W Davis
- Department of Biomass Science & Conversion Technologies, Sandia National Laboratories, Livermore, CA 94550, USA.
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Gonçalves CF, Menegol T, Rech R. Biochemical composition of green microalgae Pseudoneochloris marina grown under different temperature and light conditions. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101032] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sun D, Zhang Z, Zhang Y, Cheng KW, Chen F. Light induces carotenoids accumulation in a heterotrophic docosahexaenoic acid producing microalga, Crypthecodinium sp. SUN. BIORESOURCE TECHNOLOGY 2019; 276:177-182. [PMID: 30623873 DOI: 10.1016/j.biortech.2018.12.093] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/22/2018] [Accepted: 12/24/2018] [Indexed: 06/09/2023]
Abstract
In the present study, the effect of various light conditions on carotenoid accumulation in a novel heterotrophic microalga, Crypthecodinium sp. SUN was investigated. The results showed that C. sp. SUN mainly produced γ-carotene and β-carotene. The total carotenoid content could reach to 12.8 mg g-1 dry weight under high light intensity (100 μmol m-2 s-1), which was >100-fold higher than that under dark condition. Besides, along with the light intensity increased, the ROS level in vivo was decreased at 48 h and 72 h. Further study showed that, light could efficiently promote the gene expression of PSY and LCYb, which explain the molecular mechanisms of carotenoids accumulation under light conditions. Meanwhile, slightly inhibited fatty acids accumulation could promote the carotenoids yield. The present work proposed that C. sp. SUN could be a potential carotenoid producer, and provided valuable insight for carotenoids biosynthesis.
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Affiliation(s)
- Dongzhe Sun
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China; Nutrition & Health Research Institute, COFCO, Beijing 102209, China
| | - Zhao Zhang
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China; BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China
| | - Yue Zhang
- BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China
| | - Ka-Wing Cheng
- Institute for Food & Bioresource Engineering, College of Engineering, Peking University, Beijing 100871, China; BIC-ESAT, College of Engineering, Peking University, Beijing 100871, China; Institute for Advanced Study, Shenzhen University, Nanshan, Shenzhen 518060, 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; Institute for Advanced Study, Shenzhen University, Nanshan, Shenzhen 518060, China.
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Comparative assessment on the extraction of carotenoids from microalgal sources: Astaxanthin from H. pluvialis and β-carotene from D. salina. Food Chem 2019; 277:128-134. [DOI: 10.1016/j.foodchem.2018.10.066] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 10/10/2018] [Accepted: 10/12/2018] [Indexed: 11/20/2022]
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47
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Saini DK, Chakdar H, Pabbi S, Shukla P. Enhancing production of microalgal biopigments through metabolic and genetic engineering. Crit Rev Food Sci Nutr 2019; 60:391-405. [PMID: 30706720 DOI: 10.1080/10408398.2018.1533518] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The versatile use of biopigments in food, feed, cosmetic, pharmaceutical and analytical industries emphasized to find different and renewable sources of biopigments. Microalgae, including cyanobacteria, are becoming a potential candidate for pigment production as these have fast-growing ability, high pigment content, highly variable and also have "Generally recognized as safe" status. These algal groups are known to produce different metabolites that include hormones, vitamins, biopolythene and biochemicals. We discuss here the potential use of microalgal biopigments in our daily life as well as in food and cosmetic industries. Pigment like carotenoids has many health benefits such as antioxidant, anti-inflammatory properties and also provide photo-protection against UV radiation. This review details the effect of various abiotic and biotic factors such as temperature, light, nutrition on maximizing the pigment content in the microalgal cell. This review also highlights the potential of microalgae, whether in present native or engineered strain including the many metabolic strategies which are used or can be used to produce a higher amount of these valuable biopigments. Additionally, future challenges in the context of pigment production have also been discussed.
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Affiliation(s)
- Dinesh Kumar Saini
- Enzyme Technology and Protein Bioinformatics Laboratory Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Hillol Chakdar
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Maunath Bhanjan, Uttar Pradesh, India
| | - Sunil Pabbi
- Centre for Conservation and Utilisation of Blue Green Algae (CCUBGA) Division of Microbiology, ICAR - Indian Agricultural Research Institute, New Delhi, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
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Cezare-Gomes EA, Mejia-da-Silva LDC, Pérez-Mora LS, Matsudo MC, Ferreira-Camargo LS, Singh AK, de Carvalho JCM. Potential of Microalgae Carotenoids for Industrial Application. Appl Biochem Biotechnol 2019; 188:602-634. [PMID: 30613862 DOI: 10.1007/s12010-018-02945-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/26/2018] [Indexed: 12/15/2022]
Abstract
Microalgae cultivation, when compared to the growth of higher plants, presents many advantages such as faster growth, higher biomass productivity, and smaller land area requirement for cultivation. For this reason, microalgae are an alternative platform for carotenoid production when compared to the traditional sources. Currently, commercial microalgae production is not well developed but, fortunately, there are several studies aiming to make the large-scale production feasible by, for example, employing different cultivation systems. This review focuses on the main carotenoids from microalgae, comparing them to the traditional sources, as well as a critical analysis about different microalgae cultivation regimes that are currently available and applicable for carotenoid accumulation. Throughout this review paper, we present relevant information about the main commercial microalgae carotenoid producers; the comparison between carotenoid content from food, vegetables, fruits, and microalgae; and the great importance and impact of these molecule applications, such as in food (nutraceuticals and functional foods), cosmetics and pharmaceutical industries, feed (colorants and additives), and healthcare area. Lastly, the different operating systems applied to these photosynthetic cultivations are critically discussed, and conclusions and perspectives are made concerning the best operating system for acquiring high cell densities and, consequently, high carotenoid accumulation.
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Affiliation(s)
- Eleane A Cezare-Gomes
- Department of Biochemical and Pharmaceutical Technology, University of São Paulo, Avenida Prof. Lineu Prestes 580, Bl. 16, São Paulo, SP, 05508-900, Brazil
| | - Lauris Del Carmen Mejia-da-Silva
- Department of Biochemical and Pharmaceutical Technology, University of São Paulo, Avenida Prof. Lineu Prestes 580, Bl. 16, São Paulo, SP, 05508-900, Brazil
| | - Lina S Pérez-Mora
- Department of Biochemical and Pharmaceutical Technology, University of São Paulo, Avenida Prof. Lineu Prestes 580, Bl. 16, São Paulo, SP, 05508-900, Brazil
| | - Marcelo C Matsudo
- Institute of Natural Resources, Federal University of Itajubá, Av. Benedito Pereira dos Santos, 1303, Itajubá, MG, 37500-903, Brazil
| | - Lívia S Ferreira-Camargo
- Center of Natural and Human Sciences, Federal University of ABC, R. Abolição, s/n° - Vila São Pedro, Santo André, SP, 09210-180, Brazil
| | - Anil Kumar Singh
- Department of Pharmacy, University of São Paulo, Avenida Prof. Lineu Prestes 580, Bl. 16, São Paulo, SP, 05508-900, Brazil
| | - João Carlos Monteiro de Carvalho
- Department of Biochemical and Pharmaceutical Technology, University of São Paulo, Avenida Prof. Lineu Prestes 580, Bl. 16, São Paulo, SP, 05508-900, Brazil.
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Liang MH, Wang L, Wang Q, Zhu J, Jiang JG. High-value bioproducts from microalgae: Strategies and progress. Crit Rev Food Sci Nutr 2018; 59:2423-2441. [PMID: 29676930 DOI: 10.1080/10408398.2018.1455030] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Microalgae have been considered as alternative sustainable resources for high-value bioproducts such as lipids (especially triacylglycerides [TAGs]), polyunsaturated fatty acids (PUFAs), and carotenoids, due to their relatively high photosynthetic efficiency, no arable land requirement, and ease of scale-up. It is of great significance to exploit microalgae for the production of high-value bioproducts. How to improve the content or productivity of specific bioproducts has become one of the most urgent challenges. In this review, we will describe high-value bioproducts from microalgae and their biosynthetic pathways (mainly for lipids, PUFAs, and carotenoids). Recent progress and strategies for the enhanced production of bioproducts from microalgae are also described in detail, and these strategies take advantages of optimized cultivation conditions with abiotic stress, chemical stress (addition of metabolic precursors, phytohormones, chemical inhibitors, and chemicals inducing oxidative stress response), and molecular approaches such as metabolic engineering, transcriptional engineering, and gene disruption strategies (mainly RNAi, antisense RNA, miRNA-based knockdown, and CRISPR/Cas9).
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Affiliation(s)
- Ming-Hua Liang
- a College of Food Science and Engineering, South China University of Technology , Guangzhou , China
| | - Ling Wang
- b School of Biotechnology, Jiangsu University of Science and Technology , Zhenjiang , China
| | - Qiming Wang
- c College of Bioscience and Biotechnology, Hunan Agricultural University , Changsha , China
| | - Jianhua Zhu
- b School of Biotechnology, Jiangsu University of Science and Technology , Zhenjiang , China.,c College of Bioscience and Biotechnology, Hunan Agricultural University , Changsha , China.,d Department of Plant Science and Landscape Architecture, University of Maryland , College Park , Maryland , USA
| | - Jian-Guo Jiang
- a College of Food Science and Engineering, South China University of Technology , Guangzhou , China
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Loss of Function in Zeaxanthin Epoxidase of Dunaliella tertiolecta Caused by a Single Amino Acid Mutation within the Substrate-Binding Site. Mar Drugs 2018; 16:md16110418. [PMID: 30388729 PMCID: PMC6266236 DOI: 10.3390/md16110418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 10/21/2018] [Accepted: 10/26/2018] [Indexed: 12/17/2022] Open
Abstract
The zea1 mutant of marine microalga Dunaliella tertiolecta accumulates zeaxanthin under normal growth conditions, and its phenotype has been speculated to be related to zeaxanthin epoxidase (ZEP). In this study, we isolated the ZEP gene from both wild-type D. tertiolecta and the mutant. We found that the zea1 mutant has a point mutation of the 1337th nucleotide of the ZEP sequence (a change from guanine to adenine), resulting in a change of glycine to aspartate in a highly conserved region in the catalytic domain. Similar expression levels of ZEP mRNA and protein in both wild-type and zea1 were confirmed by using qRT-PCR and western blot analysis, respectively. Additionally, the enzyme activity analysis of ZEPs in the presence of cofactors showed that the inactivation of ZEP in zea1 was not caused by deficiency in the levels of cofactors. From the predicted three-dimensional ZEP structure of zea1, we observed a conformational change on the substrate-binding site in the ZEP. A comparative analysis of the ZEP structures suggested that the conformational change induced by a single amino acid mutation might impact the interaction between the substrate and substrate-binding site, resulting in loss of zeaxanthin epoxidase function.
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