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Chen J, Huang Y, Shu Y, Hu X, Wu D, Jiang H, Wang K, Liu W, Fu W. Recent Progress on Systems and Synthetic Biology of Diatoms for Improving Algal Productivity. Front Bioeng Biotechnol 2022; 10:908804. [PMID: 35646842 PMCID: PMC9136054 DOI: 10.3389/fbioe.2022.908804] [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: 03/31/2022] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
Microalgae have drawn much attention for their potential applications as a sustainable source for developing bioactive compounds, functional foods, feeds, and biofuels. Diatoms, as one major group of microalgae with high yields and strong adaptability to the environment, have shown advantages in developing photosynthetic cell factories to produce value-added compounds, including heterologous bioactive products. However, the commercialization of diatoms has encountered several obstacles that limit the potential mass production, such as the limitation of algal productivity and low photosynthetic efficiency. In recent years, systems and synthetic biology have dramatically improved the efficiency of diatom cell factories. In this review, we discussed first the genome sequencing and genome-scale metabolic models (GEMs) of diatoms. Then, approaches to optimizing photosynthetic efficiency are introduced with a focus on the enhancement of biomass productivity in diatoms. We also reviewed genome engineering technologies, including CRISPR (clustered regularly interspaced short palindromic repeats) gene-editing to produce bioactive compounds in diatoms. Finally, we summarized the recent progress on the diatom cell factory for producing heterologous compounds through genome engineering to introduce foreign genes into host diatoms. This review also pinpointed the bottlenecks in algal engineering development and provided critical insights into the future direction of algal production.
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Affiliation(s)
- Jiwei Chen
- Department of Marine Science, Ocean College, Zhejiang University, Hangzhou, China
| | - Yifan Huang
- Department of Marine Science, Ocean College, Zhejiang University, Hangzhou, China
| | - Yuexuan Shu
- Department of Marine Science, Ocean College, Zhejiang University, Hangzhou, China
| | - Xiaoyue Hu
- Center for Data Science, Zhejiang University, Hangzhou, China
- School of Mathematical Sciences, Zhejiang University, Hangzhou, China
| | - Di Wu
- Department of Marine Science, Ocean College, Zhejiang University, Hangzhou, China
| | - Hangjin Jiang
- Center for Data Science, Zhejiang University, Hangzhou, China
| | - Kui Wang
- Department of Marine Science, Ocean College, Zhejiang University, Hangzhou, China
| | - Weihua Liu
- School of Mathematical Sciences, Zhejiang University, Hangzhou, China
| | - Weiqi Fu
- Department of Marine Science, Ocean College, Zhejiang University, Hangzhou, China
- Center for Systems Biology and Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, School of Engineering and Natural Sciences, University of Iceland, Reykjavik, Iceland
- *Correspondence: Weiqi Fu,
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Antacli JC, Hernando MP, De Troch M, Malanga G, Mendiolar M, Hernández DR, Varela DE, Antoni J, Sahade RJ, Schloss IR. Ocean warming and freshening effects on lipid metabolism in coastal Antarctic phytoplankton assemblages dominated by sub-Antarctic species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:147879. [PMID: 34380283 DOI: 10.1016/j.scitotenv.2021.147879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 04/04/2021] [Accepted: 05/14/2021] [Indexed: 06/13/2023]
Abstract
Marine phytoplankton can utilize different strategies to cope with ocean warming and freshening from glacial melting in polar regions, which are disproportionally impacted by global warming. In the present study, we investigated the individual and combined effects of a 4 °C increase in seawater temperature (T+) and a 4 psu decrease in salinity (S-) from ambient values on biomass, nutrient use, fatty acid composition and lipid damage biochemistry of natural phytoplankton assemblages from Potter Cove (25 de Mayo/King George Island, Antarctica). Experiments were conducted by exposing the assemblages to four treatments during a 7-day incubation period using microcosm located along shore from January 23 to 31, 2016. The N:P ratio decreased in all treatments from day 4 onwards, but especially under high temperature (T+). Lipid damage was mainly detected under S0T+ and S-T+ conditions, and it decreased when the production of the antioxidant α-tocopherol increased. This antioxidant protection resulted in a build-up of phytoplankton biomass, especially at T+. Under the combined effect of both stressors (S-T+), the concentration of ω3 fatty acids increased, potentially leading to higher-quality FA composition. These results, which were related to the dominance of sub-Antarctic species in phytoplankton assemblages, contribute to the understanding of the potential consequences of ocean warming and increase seawater freshening on the trophic webs of the Southern Ocean.
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Affiliation(s)
- J C Antacli
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Ecología Marina. Av. Vélez Sarsfield 299, 5000 Córdoba Capital, Argentina; Instituto de Diversidad y Ecología Animal (IDEA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba Capital, Argentina.
| | - M P Hernando
- Departamento de Radiobiología, Comisión Nacional de Energía Atómica, Av. Gral. Paz 1499, San Martín, Buenos Aires, Argentina; Red de Investigación de estresores Marinos-costeros en América Latina y el Caribe, REMARCO
| | - M De Troch
- Ghent University, Marine Biology, Krijgslaan 281-S8, B-9000 Ghent, Belgium
| | - G Malanga
- Instituto de Bioquímica y Medicina Molecular (IBIMOL), Universidad de Buenos Aires (UBA)- CONICET. Fisicoquímica, Facultad de Farmacia y Bioquímica, Junín 956 (C1113AAD), Buenos Aires, Argentina
| | - M Mendiolar
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo Victoria Ocampo No 1, B7602HSA Mar del Plata, Argentina
| | - D R Hernández
- Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo Victoria Ocampo No 1, B7602HSA Mar del Plata, Argentina
| | - D E Varela
- Department of Biology and School of Earth and Ocean Sciences, University of Victoria, Victoria, B.C., Canada
| | - J Antoni
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900 La Plata, Argentina
| | - R J Sahade
- Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Ecología Marina. Av. Vélez Sarsfield 299, 5000 Córdoba Capital, Argentina; Instituto de Diversidad y Ecología Animal (IDEA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba Capital, Argentina
| | - I R Schloss
- Instituto Antártico Argentino, 25 de Mayo 1143, San Martín, Buenos Aires, Argentina; Centro Austral de Investigaciones Científicas (CADIC, CONICET), Bernardo Houssay 200, Ushuaia, Tierra del Fuego, Argentina; Universidad Nacional de Tierra del Fuego, Ushuaia, Tierra del Fuego, Argentina
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A state-of-the-art review on the synthetic mechanisms, production technologies, and practical application of polyunsaturated fatty acids from microalgae. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102281] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Marella TK, López-Pacheco IY, Parra-Saldívar R, Dixit S, Tiwari A. Wealth from waste: Diatoms as tools for phycoremediation of wastewater and for obtaining value from the biomass. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:137960. [PMID: 32408422 DOI: 10.1016/j.scitotenv.2020.137960] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/13/2020] [Accepted: 03/13/2020] [Indexed: 06/11/2023]
Abstract
Diatoms are a type of microalgae with diverse capabilities which make them useful for multiple applications. The abundance of diatoms in water bodies facilitates the removal of pollutants from wastewater originating from different industries, such as agriculture and other anthropogenic sources. The unique photosynthetic, cellular and metabolic characteristics of diatoms allows them to utilize pollutants like nitrate, iron, phosphate, molybdenum, silica, and heavy metals, such as copper, cadmium, chromium, lead, etc., which make diatoms a good option for wastewater treatment. In addition, the biomass produced by diatoms growth on wastewaters has diverse applications and can, therefore, be valuable. This review focusses on the unique capabilities of diatoms for wastewater remediation and the capture of carbon dioxide, concomitant with the generation of valuable products. Diatom biorefinery can be a sustainable solution to wastewater management, and the biomass obtained from treatment can be turned into biofuels, biofertilizers, nutritional supplements for animal production, and used for pharmaceutical applications containing bioactive compounds like EPA, DHA and pigments such as fucoxanthin.
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Affiliation(s)
- Thomas Kiran Marella
- International Crop Research Institute for Semi-arid Tropics (ICRISAT), Patancheru 502 324, Telangana State, India
| | - Itzel Y López-Pacheco
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, CP 64849 Monterrey, N.L., Mexico
| | - Roberto Parra-Saldívar
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, CP 64849 Monterrey, N.L., Mexico
| | - Sreenath Dixit
- International Crop Research Institute for Semi-arid Tropics (ICRISAT), Patancheru 502 324, Telangana State, India
| | - Archana Tiwari
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, 201 313, India.
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Cheregi O, Ekendahl S, Engelbrektsson J, Strömberg N, Godhe A, Spetea C. Microalgae biotechnology in Nordic countries - the potential of local strains. PHYSIOLOGIA PLANTARUM 2019; 166:438-450. [PMID: 30809828 PMCID: PMC6850598 DOI: 10.1111/ppl.12951] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/25/2019] [Accepted: 02/25/2019] [Indexed: 05/03/2023]
Abstract
Climate change, energy use and food security are the main challenges that our society is facing nowadays. Biofuels and feedstock from microalgae can be part of the solution if high and continuous production is to be ensured. This could be attained in year-round, low cost, outdoor cultivation systems using strains that are not only champion producers of desired compounds but also have robust growth in a dynamic climate. Using microalgae strains adapted to the local conditions may be advantageous particularly in Nordic countries. Here, we review the current status of laboratory and outdoor-scale cultivation in Nordic conditions of local strains for biofuel, high-value compounds and water remediation. Strains suitable for biotechnological purposes were identified from the large and diverse pool represented by saline (NE Atlantic Ocean), brackish (Baltic Sea) and fresh water (lakes and rivers) sources. Energy-efficient annual rotation for cultivation of strains well adapted to Nordic climate has the potential to provide high biomass yields for biotechnological purposes.
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Affiliation(s)
- Otilia Cheregi
- Department of Biological and Environmental SciencesUniversity of GothenburgGothenburg 40530Sweden
| | - Susanne Ekendahl
- Department of Chemistry and MaterialsRISE Research Institutes of SwedenBorås 50115Sweden
| | - Johan Engelbrektsson
- Department of Chemistry and MaterialsRISE Research Institutes of SwedenBorås 50115Sweden
| | - Niklas Strömberg
- Department of Chemistry and MaterialsRISE Research Institutes of SwedenBorås 50115Sweden
| | - Anna Godhe
- Department of Marine SciencesUniversity of GothenburgGothenburg 40530Sweden
| | - Cornelia Spetea
- Department of Biological and Environmental SciencesUniversity of GothenburgGothenburg 40530Sweden
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