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Koopmann IK, Müller BA, Labes A. Screening of a Thraustochytrid Strain Collection for Carotenoid and Squalene Production Characterized by Cluster Analysis, Comparison of 18S rRNA Gene Sequences, Growth Behavior, and Morphology. Mar Drugs 2023; 21:204. [PMID: 37103341 PMCID: PMC10140983 DOI: 10.3390/md21040204] [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: 02/27/2023] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 04/28/2023] Open
Abstract
Carotenoids and squalene are important terpenes that are applied in a wide range of products in foods and cosmetics. Thraustochytrids might be used as alternative production organisms to improve production processes, but the taxon is rarely studied. A screening of 62 strains of thraustochytrids sensu lato for their potential to produce carotenoids and squalene was performed. A phylogenetic tree was built based on 18S rRNA gene sequences for taxonomic classification, revealing eight different clades of thraustochytrids. Design of experiments (DoE) and growth models identified high amounts of glucose (up to 60 g/L) and yeast extract (up to 15 g/L) as important factors for most of the strains. Squalene and carotenoid production was studied by UHPLC-PDA-MS measurements. Cluster analysis of the carotenoid composition partially mirrored the phylogenetic results, indicating a possible use for chemotaxonomy. Strains in five clades produced carotenoids. Squalene was found in all analyzed strains. Carotenoid and squalene synthesis was dependent on the strain, medium composition and solidity. Strains related to Thraustochytrium aureum and Thraustochytriidae sp. are promising candidates for carotenoid synthesis. Strains closely related to Schizochytrium aggregatum might be suitable for squalene production. Thraustochytrium striatum might be a good compromise for the production of both molecule groups.
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Affiliation(s)
- Inga K Koopmann
- ZAiT, Center for Analytics in Technology Transfer of Bio and Food Technology Innovations, Flensburg University of Applied Sciences, 24943 Flensburg, Schleswig-Holstein, Germany
| | - Bettina A Müller
- ZAiT, Center for Analytics in Technology Transfer of Bio and Food Technology Innovations, Flensburg University of Applied Sciences, 24943 Flensburg, Schleswig-Holstein, Germany
| | - Antje Labes
- ZAiT, Center for Analytics in Technology Transfer of Bio and Food Technology Innovations, Flensburg University of Applied Sciences, 24943 Flensburg, Schleswig-Holstein, Germany
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2
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Yarkent Ç, Oncel SS. Recent Progress in Microalgal Squalene Production and Its Cosmetic Application. BIOTECHNOL BIOPROC E 2022; 27:295-305. [PMID: 35789811 PMCID: PMC9244377 DOI: 10.1007/s12257-021-0355-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 11/26/2022]
Abstract
Squalene, [oxidized form squalane] is a terpenoid with biological activity that produced by animals and plants. In the human body, a significant excretion named as sebum includes squalene in 12 percent. This bioactive compound shows anti-inflammatory, detoxifying, moisturizing and antioxidant effects on the human body. In addition to having these properties, it is known that squalene production decreases as less sebum is produced with age. Because of that, the need for supplementation of squalene through products has arisen. As a result, squalene production has been drawn attention due to its many application possibilities by cosmetic, cosmeceutical and pharmaceutical fields. At this point, approximately 3,000 of sharks, the major and the most popular source of squalene must be killed to obtain 1 ton of squalene. These animals are on the verge of extinction. This situation has caused to focus on finding microalgae strains, which are sustainable producers of squalene as alternative to sharks. This review paper summarizes the recent progresses in the topic of squalene. For this purpose, it contains information on squalene producers, microalgal squalene production and cosmetic evaluation of squalene.
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Affiliation(s)
- Çağla Yarkent
- Department of Bioengineering, Faculty of Engineering, University of Ege, Bornova, 35100 Izmir, Turkey
| | - Suphi S. Oncel
- Department of Bioengineering, Faculty of Engineering, University of Ege, Bornova, 35100 Izmir, Turkey
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3
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Ding J, Wu B, Chen L. Application of Marine Microbial Natural Products in Cosmetics. Front Microbiol 2022; 13:892505. [PMID: 35711762 PMCID: PMC9196241 DOI: 10.3389/fmicb.2022.892505] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
As the market size of the cosmetics industry increases, the safety and effectiveness of new products face higher requirements. The marine environment selects for species of micro-organisms with metabolic pathways and adaptation mechanisms different from those of terrestrial organisms, resulting in their natural products exhibiting unique structures, high diversity, and significant biological activities. Natural products are usually safe and non-polluting. Therefore, considerable effort has been devoted to searching for cosmetic ingredients that are effective, safe, and natural for marine micro-organisms. However, marine micro-organisms can be difficult, or impossible, to culture because of their special environmental requirements. Metagenomics technology can help to solve this problem. Moreover, using marine species to produce more green and environmentally friendly products through biotransformation has become a new choice for cosmetic manufacturers. In this study, the natural products of marine micro-organisms are reviewed and evaluated with respect to various cosmetic applications.
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Affiliation(s)
- Jinwang Ding
- Institute of Applied Genomics, Fuzhou University, Fuzhou, China
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, China
| | - Baochuan Wu
- Institute of Applied Genomics, Fuzhou University, Fuzhou, China
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, China
| | - Liqun Chen
- Institute of Applied Genomics, Fuzhou University, Fuzhou, China
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, China
- *Correspondence: Liqun Chen,
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4
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Patel A, Bettiga M, Rova U, Christakopoulos P, Matsakas L. Microbial genetic engineering approach to replace shark livering for squalene. Trends Biotechnol 2022; 40:1261-1273. [PMID: 35450778 DOI: 10.1016/j.tibtech.2022.03.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/08/2022] [Accepted: 03/18/2022] [Indexed: 12/23/2022]
Abstract
Squalene is generally sourced from the liver oil of deep sea sharks (Squalus spp.), in which it accounts for 40-70% of liver mass. To meet the growing demand for squalene because of its beneficial effects for human health, three to six million deep sea sharks are slaughtered each year, profoundly endangering marine ecosystems. To overcome this unsustainable practice, microbial sources of squalene might offer a viable alternative to plant- or animal-based squalene, although only a few microorganisms have been found that are capable of synthesizing up to 30% squalene of dry biomass by native biosynthetic pathways. These squalene biosynthetic pathways, on the other hand, can be genetically manipulated to transform microorganisms into 'cellular factories' for squalene overproduction.
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Affiliation(s)
- Alok Patel
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden.
| | - Maurizio Bettiga
- Department of Biology and Biological Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden; Bioeconomy Division, EviKrets Biobased Processes Consultants, Landvetter, Sweden
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Leonidas Matsakas
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
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Excessive Aurantiochytrium acetophilum docosahexaenoic acid supplementation decreases growth performance and breast muscle mass of broiler chickens. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Konstantinov DK, Menzorov A, Krivenko O, Doroshkov AV. Isolation and transcriptome analysis of a biotechnologically promising Black Sea protist, Thraustochytrium aureum ssp. strugatskii. PeerJ 2022; 10:e12737. [PMID: 35287351 PMCID: PMC8917795 DOI: 10.7717/peerj.12737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/13/2021] [Indexed: 01/07/2023] Open
Abstract
Background Marine protists are an important part of the ocean ecosystem. They may possess unique sets of biosynthetic pathways and, thus, be promising model organisms for metabolic engineering for producing substances for the pharmaceutical, cosmetic, and perfume industries. Currently, full-genome data are available just for a limited number of protists hampering their use in biotechnology. Methods We characterized the morphology of a new cultured strain of Thraustochytriaceae isolated from the Black Sea ctenophore Beroe ovata using phase-contrast microscopy. Cell culture was performed in the FAND culture medium based on fetal bovine serum and DMEM. Phylogenetic analysis was performed using the 18S rRNA sequence. We also conducted a transcriptome assembly and compared the data with the closest species. Results The protist belongs to the genus Thraustochytrium based on the 18S rRNA sequence analysis. We designated the isolated protist as T. aureum ssp. strugatskii. The closest species with the genome assembly is Schizochytrium aggregatum. Transcriptome analysis revealed the majority of the fatty acid synthesis enzymes. Conclusion Our findings suggest that the T. aureum ssp. strugatskii is a promising candidate for biotechnological use. Together with the previously available, our data would allow the establishment of an accurate phylogeny of the family Thraustochytriaceae. Also, it could be a reference point for studying the evolution of the enzyme families.
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Affiliation(s)
- Dmitrii K. Konstantinov
- Novosibirsk State University, Novosibirsk, Russia,Institute of Cytology and Genetics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Aleksei Menzorov
- Novosibirsk State University, Novosibirsk, Russia,Institute of Cytology and Genetics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Olga Krivenko
- A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Sevastopol, Russia
| | - Alexey V. Doroshkov
- Novosibirsk State University, Novosibirsk, Russia,Institute of Cytology and Genetics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia,Siberian Federal University, Krasnoyarsk, Russia
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7
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Chou SC, Su YM, Liu T, Li ZW, Liao HE, Renta PP, Chen YM. Novel potential functions of amoeboid cells in thraustochytrids revealed by Aurantiochytrium limacinum BL10. Eur J Protistol 2021; 82:125860. [PMID: 34990900 DOI: 10.1016/j.ejop.2021.125860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 11/24/2021] [Accepted: 12/13/2021] [Indexed: 01/22/2023]
Abstract
The current study investigated the potential functions of amoeboid cell formation and migration in a thraustochytrid strain, Aurantiochytrium limacinum BL10. Our results showed that: (1) When the surface of an agar plate was inoculated with BL10, amoeboid cells mainly emerged on the periphery of isolated colonies. The amoeboid cells then migrated outwards to form small vegetative cell clusters, which favored rapid colony expansion. In addition, amoeboid cells were capable of self-recognition (i.e. they were able to distinguish BL10 from other thraustochytrid species), and could choose whether to evade (self colonies) or approach (non-self colonies). These observations indicated that amoeboid cells were employed by BL10 to help colonize empty territories and to outcompete other thraustochytrid species in previously colonized territories. (2) When the agar medium was soft, amoeboid cells were able to penetrate the surface and migrate throughout, thereby allowing BL10 to colonize the interior of the solid matrix. This finding suggested that amoeboid cell formation and migration may help Aurantiochytrium colonize the interior of solid matrices to obtain additional nutrients and spatial resources. The mechanisms underlying the regulation of amoeboid cell formation and migration as well as the extraordinary microbial social behaviors of BL10 are also discussed in this article.
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Affiliation(s)
- Szu-Cheng Chou
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Yu-Ming Su
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Tsunglin Liu
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Zhen-Wei Li
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Hung-En Liao
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Person Pesona Renta
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Yi-Min Chen
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan 701, Taiwan.
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Matulka RA, Howell LA, Pratyusha Chennupati B, Teresa Bock J. Safety evaluation of odd-chain fatty acid algal oil. Food Chem Toxicol 2021; 156:112444. [PMID: 34332011 DOI: 10.1016/j.fct.2021.112444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
In the food industry, most fatty acid-rich oils are primarily composed of saturated even-chain fatty acids. However, saturated odd-chain fatty acids are potentially a beneficial alternative to other saturated fatty acid-containing oils. In this communication, we examine the safety of odd-chain fatty acid (OCFA) algal oil, a microalgal-sourced oil composed primarily of the saturated odd-chain fatty acids pentadecanoic acid and heptadecanoic acid. OCFA algal oil was assessed for toxicity in a 14-day palatability study and comprehensive 13-week dietary study at inclusion levels of 5%, 10%, and 15% in the diet, utilizing a DHA-rich algal oil as a comparator control. No adverse effects attributed to the consumption of OCFA algal oil were observed in either study. Therefore, we report a No Observable Adverse Effect Level (NOAEL) of 150,000 ppm (15% in the diet), equivalent to an OCFA algal oil intake of 7553.9 and 8387.7 mg/kg bw/day for male and female rats, respectively. The genotoxic potential of OCFA algal oil was also examined in an in vitro bacterial reverse mutation assay and in vivo mammalian bone marrow chromosome aberration test. OCFA algal oil was non-mutagenic in Salmonella typhimurium and Escherichia coli test strains and did not exhibit clastogenicity in vivo.
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9
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Colonia BSO, de Melo Pereira GV, Mendonça Rodrigues F, de Souza Miranda Muynarsk E, da Silva Vale A, Cesar de Carvalho J, Thomaz Soccol V, de Oliveira Penha R, Ricardo Soccol C. Integrating metagenetics and high-throughput screening for bioprospecting marine thraustochytrids producers of long-chain polyunsaturated fatty acids. BIORESOURCE TECHNOLOGY 2021; 333:125176. [PMID: 33894449 DOI: 10.1016/j.biortech.2021.125176] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Omega-3 produced by marine thraustochytrids has appeared as an alternative to fish oil and an eco-friendly solution to overfishing. Herein, an integrative analysis of metagenetics and high-throughput screening was used for bioprospecting marine thraustochytrids from southern Brazil mangrove and coastal seawater. All sampled environments showed biodiversity and abundance of SAR clade. Environmental samples detected with potential lipid-accumulating labyrinthulomycetes were further processed for direct plating and pollen baiting isolation. Microtiter plate system and fluorescence spectroscopy were combined for high-throughput screening of 319 isolates to accumulate lipids. Twenty isolates were selected for submerged cultivation and lipid characterization. Among them, B36 isolate, identified as Aurantiochytrium sp. by 18s rRNA sequencing, achieved the highest biomass (25.60 g/l CDW) and lipids (17.12 g/l CDW). This lipid content had a high biological value with 44.37% LC-PUFAs and 34.6% DHA, which can be used as a sustainable source in vegan, seafood-free and animal feed diets.
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Affiliation(s)
| | | | - Felipe Mendonça Rodrigues
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná (UFPR), 81531-970 Curitiba, PR, Brazil
| | | | - Alexander da Silva Vale
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná (UFPR), 81531-970 Curitiba, PR, Brazil
| | - Júlio Cesar de Carvalho
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná (UFPR), 81531-970 Curitiba, PR, Brazil
| | - Vanete Thomaz Soccol
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná (UFPR), 81531-970 Curitiba, PR, Brazil
| | - Rafaela de Oliveira Penha
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná (UFPR), 81531-970 Curitiba, PR, Brazil
| | - Carlos Ricardo Soccol
- Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná (UFPR), 81531-970 Curitiba, PR, Brazil.
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Kożyczkowska A, Najle SR, Ocaña-Pallarès E, Aresté C, Shabardina V, Ara PS, Ruiz-Trillo I, Casacuberta E. Stable transfection in protist Corallochytriumlimacisporum identifies novel cellular features among unicellular animals relatives. Curr Biol 2021; 31:4104-4110.e5. [PMID: 34293333 DOI: 10.1016/j.cub.2021.06.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 05/07/2021] [Accepted: 06/22/2021] [Indexed: 01/31/2023]
Abstract
The evolutionary path from protists to multicellular animals remains a mystery. Recent work on the genomes of several unicellular relatives of animals has shaped our understanding of the genetic changes that may have occurred in this transition.1-3 However, the specific cellular modifications that took place to accommodate these changes remain unclear. To address this, we need to compare metazoan cells with those of their extant relatives, which are choanoflagellates, filastereans, ichthyosporeans, and corallochytreans/pluriformeans. Interestingly, these lineages display a range of developmental patterns potentially homologous to animal ones. Genetic tools have already been established in three of those lineages.4-7 However, there are no genetic tools available for Corallochytrea. We here report the development of stable transfection in the corallochytrean Corallochytrium limacisporum. Using these tools, we discern previously unknown biological features of C. limacisporum. In particular, we identify two different paths for cell division-binary fission and coenocytic growth-that reveal a non-linear life cycle. Additionally, we found that C. limacisporum is binucleate for most of its life cycle, and that, contrary to what happens in most eukaryotes, nuclear division is decoupled from cellular division. Moreover, its actin cytoskeleton shares characteristics with both fungal and animal cells. The establishment of these tools in C. limacisporum fills an important gap in the unicellular relatives of animals, opening up new avenues of research to elucidate the specific cellular changes that occurred in the evolution of animals.
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Affiliation(s)
- Aleksandra Kożyczkowska
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain
| | - Sebastián R Najle
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain
| | - Eduard Ocaña-Pallarès
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain
| | - Cristina Aresté
- Department of Cell Death and Proliferation, IIBB-CSIC, IDIBAPS, 08036 Barcelona, Spain
| | - Victoria Shabardina
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain
| | - Patricia S Ara
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain
| | - Iñaki Ruiz-Trillo
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain; Departament de Genètica, Microbiologia i Estadística, Universitat de Barcelona, Av. Diagonal, 645, 08028 Barcelona, Catalonia, Spain; ICREA, Passeig Lluís Companys 23, 08010, Barcelona, Catalonia, Spain.
| | - Elena Casacuberta
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalonia, Spain.
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Mariam I, Kareya MS, Nesamma AA, Jutur PP. Delineating metabolomic changes in native isolate Aurantiochytrium for production of docosahexaenoic acid in presence of varying carbon substrates. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102285] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Erection of a New Genus and Species for the Pathogen of Hard Clams 'Quahog Parasite Unknown' (QPX): Mucochytrium quahogii gen. nov., sp. nov. Protist 2021; 172:125793. [PMID: 33607480 DOI: 10.1016/j.protis.2021.125793] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 11/21/2022]
Abstract
Quahog Parasite Unknown (QPX) is a facultative parasite of the hard clam, Mercenaria mercenaria. Although it has been observed in clams since the 1960's and cultivated since the 1990's, conflicting reports on important aspects of its biology have prevented its formal description. 18S rRNA gene sequences identify QPX as a thraustochytrid, but its production of copious mucus is atypical for this group. There are also conflicting reports about whether QPX shares common features of thraustochytrids, such as the production of an ectoplasmic net and biflagellate zoospores. This study reaffirms the previous descriptions of zoospore production by QPX in culture, in multiple strains from several geographic locations, and provides detail on how to maintain QPX cultures under conditions that promote the production of zoospores. Furthermore, we describe new aspects of the life cycle not previously observed. Finally, we erect Mucochytrium quahogii gen. nov., sp. nov. to accommodate this unusual thraustochytrid.
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Humaidah N, Nakai S, Nishijima W, Gotoh T, Furuta M. Application of Aurantiochytrium sp. L3W for food-processing wastewater treatment in combination with polyunsaturated fatty acids production for fish aquaculture. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140735. [PMID: 32679499 DOI: 10.1016/j.scitotenv.2020.140735] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 05/05/2023]
Abstract
Thraustochytrids such as Aurantiochytrium are heterotrophic microorganisms that are known to produce valuable polyunsaturated fatty acids (PUFAs) such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). In this study, Aurantiochytrium sp. strain L3W was used to remove dissolved organic carbon (DOC) and dissolved nitrogen (DN) from bean-boiling (BB) and miso-processing (MP) wastewater and to simultaneously produce PUFAs. Strain L3W removed 52% of the DOC and 37% of the DN from sterilized BB wastewater and produced biomass that contained 137 mg/g of fatty acids (FAs), including 96.2 mg/g of DHA. Growth of strain L3W in sterilized MP wastewater resulted in the production of biomass containing 147.6 mg/g of FAs, including 97.8 mg/g of DHA, and removal of 47% of the DOC and 55% of the DN from the wastewater. The biomass of strain L3W was digestible by the enzymes extracted from the stomachs of rainbow trout. These results confirmed the potential for use of strain L3W to remove DOC and DN from food processing wastewater and to produce PUFAs. This study also provided the first evidence that the raw biomass of Aurantiochytrium sp. can be used as a fish feed additive.
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Affiliation(s)
- Nurlaili Humaidah
- Department of Chemical Engineering, Hiroshima University 1-4-1, Kagamiyama, Higashi-Hiroshima 739-8527, Japan; Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Institut Teknologi Sepuluh Nopember, Kampus ITS, Keputih, Sukolilo, Surabaya 60111, Indonesia
| | - Satoshi Nakai
- Department of Chemical Engineering, Hiroshima University 1-4-1, Kagamiyama, Higashi-Hiroshima 739-8527, Japan.
| | - Wataru Nishijima
- Environmental Research and Management Center, Hiroshima University 1-4-1, Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Takehiko Gotoh
- Department of Chemical Engineering, Hiroshima University 1-4-1, Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Megumi Furuta
- Department of Chemical Engineering, Hiroshima University 1-4-1, Kagamiyama, Higashi-Hiroshima 739-8527, Japan
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14
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Abdel-Wahab MA, El-Samawaty AERMA, Elgorban AM, Bahkali AH. Fatty acid production of thraustochytrids from Saudi Arabian mangroves. Saudi J Biol Sci 2020; 28:855-864. [PMID: 33424376 PMCID: PMC7783828 DOI: 10.1016/j.sjbs.2020.11.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 11/02/2020] [Accepted: 11/02/2020] [Indexed: 11/30/2022] Open
Abstract
This is the first report of thraustochytrids from Saudi Arabia. A total of 108 isolates of thraustochytrid were cultured from Syhat mangroves, Arabian Gulf, Saudi Arabia. Isolated thraustochytrids belonged to five genera: Aplanochytrium, Aurantiochytrium, Schizochytrium, Thraustochytrium and Ulkenia. Cultured thraustochytrids isolated from decaying leaves of Avicennia marina (77 isolates), sediment (15), seawater (10) and decaying thalli of Sargassum (6). Of the 108 isolates, three strains (SY25, SY38 and SY52) were selected based on their high biomass productivity and high percentages of PUFAs. Phylogenetic analyses based on 18S rDNA placed the three strains within the Aurantiochytrium clade with high statistical support. Species of Aurantiochytrium formed six separate clades, the two strains (SY38 and SY52) formed a separate clade that is a sister clade to the one that contains the type species A. limacinum, while SY25 grouped with Aurantiochytrium sp. TA4, that is also isolated from mangroves in Iran, Arabian Gulf. The strains (SY38 and SY52) shared the phylogenetic placement, their morphology and fatty acid profile. The strain SY25 have different shape of sporangia that divide to give zoospores directly, sporogenous cells are surrounded by thick gelatinous sheath and produce high levels of Linoleic and Oleic essential unsaturated fatty acids. The three studied strain produced high levels of Palmitic acid (ranged between 31.1 and 65.3 % of total fatty acids) that can be further optimized for biofuel production.
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Affiliation(s)
- Mohamed A Abdel-Wahab
- Botany and Microbiology Department, Faculty of Science, King Saud University, Riyadh, Saudi Arabia.,Department of Botany and Microbiology, Faculty of Science, Sohag University, Sohag 82524, Egypt
| | | | - Abdallah M Elgorban
- Botany and Microbiology Department, Faculty of Science, King Saud University, Riyadh, Saudi Arabia.,Agricultural Research Center, Plant Pathology Research Institute, Giza, Egypt.,Center of Excellence in Biotechnology Research, King Saud University, Riyadh, Saudi Arabia
| | - Ali H Bahkali
- Botany and Microbiology Department, Faculty of Science, King Saud University, Riyadh, Saudi Arabia
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Hu F, Clevenger AL, Zheng P, Huang Q, Wang Z. Low-temperature effects on docosahexaenoic acid biosynthesis in Schizochytrium sp. TIO01 and its proposed underlying mechanism. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:172. [PMID: 33088342 PMCID: PMC7565746 DOI: 10.1186/s13068-020-01811-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 10/06/2020] [Indexed: 05/25/2023]
Abstract
BACKGROUND Schizochytrium species are known for their abundant production of docosahexaenoic acid (DHA). Low temperatures can promote the biosynthesis of polyunsaturated fatty acids (PUFAs) in many species. This study investigates low-temperature effects on DHA biosynthesis in Schizochytrium sp. TIO01 and its underlying mechanism. RESULTS The Schizochytrium fatty acid biosynthesis pathway was evaluated based on de novo genome assembly (contig N50 = 2.86 Mb) and iTRAQ-based protein identification. Our findings revealed that desaturases, involved in DHA synthesis via the fatty acid synthase (FAS) pathway, were completely absent. The polyketide synthase (PKS) pathway and the FAS pathway are, respectively, responsible for DHA and saturated fatty acid synthesis in Schizochytrium. Analysis of fatty acid composition profiles indicates that low temperature has a significant impact on the production of DHA in Schizochytrium, increasing the DHA content from 43 to 65% of total fatty acids. However, the expression levels of PKS pathway genes were not significantly regulated as the DHA content increased. Further, gene expression analysis showed that pathways related to the production of substrates (acetyl-CoA and NADPH) for fatty acid synthesis (the branched-chain amino acid degradation pathway and the pentose phosphate pathway) and genes related to saturated fatty acid biosynthesis (the FAS pathway genes and malic enzyme) were, respectively, upregulated and downregulated. These results indicate that low temperatures increase the DHA content by likely promoting the entry of relatively large amounts of substrates into the PKS pathway. CONCLUSIONS In this study, we provide genomic, proteomic, and transcriptomic evidence for the fatty acid synthesis pathway in Schizochytrium and propose a mechanism by which low temperatures promote the accumulation of DHA in Schizochytrium. The high-quality and nearly complete genome sequence of Schizochytrium provides a valuable reference for investigating the regulation of polyunsaturated fatty acid biosynthesis and the evolutionary characteristics of Thraustochytriidae species.
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Affiliation(s)
- Fan Hu
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005 China
| | - April L. Clevenger
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK USA
| | - Peng Zheng
- College of Life Science and Health, Wuhan University of Science and Technology, Wuhan, 430065 China
| | - Qiongye Huang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005 China
| | - Zhaokai Wang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005 China
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16
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Hassett BT. A Widely Distributed Thraustochytrid Parasite of Diatoms Isolated from the Arctic Represents a gen. and sp. nov. J Eukaryot Microbiol 2020; 67:480-490. [DOI: 10.1111/jeu.12796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 01/06/2023]
Affiliation(s)
- Brandon T. Hassett
- UiT Norges arktiske universtiet, BFE, NFH bygget Framstredet 6 9019 Tromsø Norway
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17
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Enigmatic Microalgae from Aeroterrestrial and Extreme Habitats in Cosmetics: The Potential of the Untapped Natural Sources. COSMETICS 2020. [DOI: 10.3390/cosmetics7020027] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
With the increasing demand for natural and safe products in cosmetics, algae with their diverse and valuable bioactive compounds are gaining vital importance. Until now, cosmetics have focused mainly on the use of freshwater and marine algae. However, algae are not restricted to aquatic habitats. They are found in essentially every type of aeroterrestrial and extreme environment on the Earth. There, they have to cope with harsh ecological conditions and have developed special strategies to thrive in these inimical habitats. Although not thoroughly studied, their adaptations include protective biochemical compounds which can find their application or are already used in the field of cosmetics. With proper cultivation techniques, algae from these habitats can provide novel sources of high-value functional products for the cosmetics industry, which have the advantage of being obtained in eco-friendly and cost-effective processes. However, it has to be considered that a few aeroterrestrial and extremophilic algae can be toxin producers, and in order to ensure conformity to the safe quality standards, all new ingredients must be properly tested. The aim of the present review is to unveil the hidden and underestimated potential of the enigmatic algae of aeroterrestrial and extreme habitats for the rapidly developing modern cosmetic industries.
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Dellero Y, Maës C, Morabito C, Schuler M, Bournaud C, Aiese Cigliano R, Maréchal E, Amato A, Rébeillé F. The zoospores of the thraustochytridAurantiochytrium limacinum: Transcriptional reprogramming and lipid metabolism associated to their specific functions. Environ Microbiol 2020; 22:1901-1916. [DOI: 10.1111/1462-2920.14978] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Younès Dellero
- Laboratoire de Physiologie Cellulaire VégétaleUniversité Grenoble Alpes, CEA, CNRS, INRA, IRIG‐LPCV 38054 Grenoble Cedex 9 France
| | - Cécile Maës
- Laboratoire de Physiologie Cellulaire VégétaleUniversité Grenoble Alpes, CEA, CNRS, INRA, IRIG‐LPCV 38054 Grenoble Cedex 9 France
| | - Christian Morabito
- INRAE Metagenopolis Unit, Domaine de Vilvert Bât. 325. 78 352 Jouy‐en‐Josas France
| | - Martin Schuler
- Laboratoire de Physiologie Cellulaire VégétaleUniversité Grenoble Alpes, CEA, CNRS, INRA, IRIG‐LPCV 38054 Grenoble Cedex 9 France
| | - Caroline Bournaud
- Laboratoire de Physiologie Cellulaire VégétaleUniversité Grenoble Alpes, CEA, CNRS, INRA, IRIG‐LPCV 38054 Grenoble Cedex 9 France
| | - Riccardo Aiese Cigliano
- Sequentia Biotech Campus UAB, Edifici Eureka Av. de Can Domènech s/n 08193 Bellaterra (Cerdanyola del Vallès) Spain
| | - Eric Maréchal
- Laboratoire de Physiologie Cellulaire VégétaleUniversité Grenoble Alpes, CEA, CNRS, INRA, IRIG‐LPCV 38054 Grenoble Cedex 9 France
| | - Alberto Amato
- Laboratoire de Physiologie Cellulaire VégétaleUniversité Grenoble Alpes, CEA, CNRS, INRA, IRIG‐LPCV 38054 Grenoble Cedex 9 France
| | - Fabrice Rébeillé
- Laboratoire de Physiologie Cellulaire VégétaleUniversité Grenoble Alpes, CEA, CNRS, INRA, IRIG‐LPCV 38054 Grenoble Cedex 9 France
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19
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Patel A, Liefeldt S, Rova U, Christakopoulos P, Matsakas L. Co-production of DHA and squalene by thraustochytrid from forest biomass. Sci Rep 2020; 10:1992. [PMID: 32029800 PMCID: PMC7005032 DOI: 10.1038/s41598-020-58728-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 01/15/2020] [Indexed: 12/12/2022] Open
Abstract
Omega-3 fatty acids, and specifically docosahexaenoic acid (DHA), are important and essential nutrients for human health. Thraustochytrids are recognised as commercial strains for nutraceuticals production, they are group of marine oleaginous microorganisms capable of co-synthesis of DHA and other valuable carotenoids in their cellular compartment. The present study sought to optimize DHA and squalene production by the thraustochytrid Schizochytrium limacinum SR21. The highest biomass yield (0.46 g/gsubstrate) and lipid productivity (0.239 g/gsubstrate) were observed with 60 g/L of glucose, following cultivation in a bioreactor, with the DHA content to be 67.76% w/wtotal lipids. To reduce costs, cheaper feedstocks and simultaneous production of various value-added products for pharmaceutical or energy use should be attempted. To this end, we replaced pure glucose with organosolv-pretreated spruce hydrolysate and assessed the simultaneous production of DHA and squalene from S. limacinum SR21. After the 72 h of cultivation period in bioreactor, the maximum DHA content was observed to 66.72% w/wtotal lipids that was corresponded to 10.15 g/L of DHA concentration. While the highest DHA productivity was 3.38 ± 0.27 g/L/d and squalene reached a total of 933.72 ± 6.53 mg/L (16.34 ± 1.81 mg/gCDW). In summary, we show that the co-production of DHA and squalene makes S. limacinum SR21 appropriate strain for commercial-scale production of nutraceuticals.
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Affiliation(s)
- Alok Patel
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Stephan Liefeldt
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87, Luleå, Sweden
| | - Leonidas Matsakas
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87, Luleå, Sweden.
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20
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Jones SW, Karpol A, Friedman S, Maru BT, Tracy BP. Recent advances in single cell protein use as a feed ingredient in aquaculture. Curr Opin Biotechnol 2020; 61:189-197. [PMID: 31991311 DOI: 10.1016/j.copbio.2019.12.026] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/18/2019] [Accepted: 12/24/2019] [Indexed: 01/08/2023]
Abstract
The global demand for high-quality, protein-rich foods will continue to increase as the global population grows, along with income levels. Aquaculture is poised to help fulfill some of this demand, and is thus the fastest growing animal protein industry. A key challenge for it, though, is sourcing a sustainable, renewable protein ingredient. Single cell protein (SCP) products, protein meals based on microbial or algal biomass, have the potential to fulfill this need. Here, we review potential sources of SCP strains and their respective production processes, highlight recent advances on identification of new SCP strains and feedstocks, and, finally, review new feeding trial data on important aquaculture species, specifically Atlantic salmon, rainbow trout, and whiteleg shrimp.
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Affiliation(s)
- Shawn W Jones
- White Dog Labs, Inc., 239 Lisa Dr., New Castle, DE 19720, USA
| | - Alon Karpol
- White Dog Labs, Israel Prof. A.D. Bergman St. 2b, Rehovot, 7670504, Israel
| | - Sivan Friedman
- White Dog Labs, Israel Prof. A.D. Bergman St. 2b, Rehovot, 7670504, Israel
| | - Biniam T Maru
- White Dog Labs, Inc., 239 Lisa Dr., New Castle, DE 19720, USA
| | - Bryan P Tracy
- White Dog Labs, Inc., 239 Lisa Dr., New Castle, DE 19720, USA.
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21
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Morabito C, Bournaud C, Maës C, Schuler M, Aiese Cigliano R, Dellero Y, Maréchal E, Amato A, Rébeillé F. The lipid metabolism in thraustochytrids. Prog Lipid Res 2019; 76:101007. [PMID: 31499096 DOI: 10.1016/j.plipres.2019.101007] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/22/2019] [Accepted: 08/21/2019] [Indexed: 10/26/2022]
Abstract
Thraustochytrids are unicellular heterotrophic marine protists of the Stramenopile group, often considered as non-photosynthetic microalgae. They have been isolated from a wide range of habitats including deep sea, but are mostly present in waters rich in sediments and organic materials. They are abundant in mangrove forests where they are major colonizers, feeding on decaying leaves and initiating the mangrove food web. Discovered 80 years ago, they have recently attracted considerable attention due to their biotechnological potential. This interest arises from their fast growth, their specific lipid metabolism and the improvement of the genetic tools and transformation techniques. These organisms are particularly rich in ω3-docosahexaenoic acid (DHA), an 'essential' fatty acid poorly encountered in land plants and animals but required for human health. To produce their DHA, thraustochytrids use a sophisticated system different from the classical fatty acid synthase system. They are also a potential source of squalene and carotenoids. Here we review our current knowledge about the life cycle, ecophysiology, and metabolism of these organisms, with a particular focus on lipid dynamics. We describe the different pathways involved in lipid and fatty acid syntheses, emphasizing their specificity, and we report on the recent efforts aimed to engineer their lipid metabolism.
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Affiliation(s)
- Christian Morabito
- Laboratoire de Physiologie Cellulaire Végétale, Université Grenoble Alpes, CNRS, CEA, INRA, 38054 Grenoble Cedex 9, France.
| | - Caroline Bournaud
- Laboratoire de Physiologie Cellulaire Végétale, Université Grenoble Alpes, CNRS, CEA, INRA, 38054 Grenoble Cedex 9, France.
| | - Cécile Maës
- Laboratoire de Physiologie Cellulaire Végétale, Université Grenoble Alpes, CNRS, CEA, INRA, 38054 Grenoble Cedex 9, France.
| | - Martin Schuler
- Laboratoire de Physiologie Cellulaire Végétale, Université Grenoble Alpes, CNRS, CEA, INRA, 38054 Grenoble Cedex 9, France.
| | - Riccardo Aiese Cigliano
- Sequentia Biotech Campus UAB, Edifici Eureka Av. de Can Domènech s/n, 08193 Bellaterra, Cerdanyola del Vallès, Spain.
| | - Younès Dellero
- Institute of Genetic, Environment and Plant Protection, UMR 1349 IGEPP INRA/Agrocampus Ouest Rennes/Université Rennes 1, Domaine de la Motte, BP35327, 35653 Le Rheu cedex, France.
| | - Eric Maréchal
- Laboratoire de Physiologie Cellulaire Végétale, Université Grenoble Alpes, CNRS, CEA, INRA, 38054 Grenoble Cedex 9, France.
| | - Alberto Amato
- Laboratoire de Physiologie Cellulaire Végétale, Université Grenoble Alpes, CNRS, CEA, INRA, 38054 Grenoble Cedex 9, France.
| | - Fabrice Rébeillé
- Laboratoire de Physiologie Cellulaire Végétale, Université Grenoble Alpes, CNRS, CEA, INRA, 38054 Grenoble Cedex 9, France.
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