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Terpenoids and Their Biosynthesis in Cyanobacteria
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Terpenoids, or isoprenoids, are a family of compounds with great structural diversity which are essential for all living organisms. In cyanobacteria, they are synthesized from the methylerythritol-phosphate (MEP) pathway, using glyceraldehyde 3-phosphate and pyruvate produced by photosynthesis as substrates. The products of the MEP pathway are the isomeric five-carbon compounds isopentenyl diphosphate and dimethylallyl diphosphate, which in turn form the basic building blocks for formation of all terpenoids. Many terpenoid compounds have useful properties and are of interest in the fields of pharmaceuticals and nutrition, and even potentially as future biofuels. The MEP pathway, its function and regulation, and the subsequent formation of terpenoids have not been fully elucidated in cyanobacteria, despite its relevance for biotechnological applications. In this review, we summarize the present knowledge about cyanobacterial terpenoid biosynthesis, both regarding the native metabolism and regarding metabolic engineering of cyanobacteria for heterologous production of non-native terpenoids.
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“terpenoids from the MEP pathway, which uses pyruvate and glyceraldehyde-3-phosphate as precursors [29]”
From Cyanobacteria as a Photosynthetic Chassis for Metabolic Pathway Engineering with Heterologous Gene Expression (2026) · cites this paper as [29]
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1 retracted
RETRACTED: Cyanobacteria and microalgae: A positive prospect for biofuels
Parmar, A., Singh, N. K., Pandey, A., Gnansounou, E., & Madamwar, D. (2011) · Bioresource Technology · doi:10.1016/j.biortech.2011.08.030 · Cited by 542
RetractedHandbook of Hydrocarbon and Lipid Microbiology
Timmis, K. N. (2009) · Springer eBooks · doi:10.1007/978-3-540-77587-4 · Cited by 1,959
Engineering a mevalonate pathway in Escherichia coli for production of terpenoids
Martin, V. J. J., Pitera, D. J., Withers, S. T., Newman, J. D., & Keasling, J. D. (2003) · Nature Biotechnology · doi:10.1038/nbt833 · Cited by 1,720
Rohmer, M., Knani, M., Simonin, P., Sutter, B., & Sahm, H. (1993) · Biochemical Journal · doi:10.1042/bj2950517 · Cited by 1,200
Rohmer, M., & Rohmer, M. (1999) · Natural Product Reports · doi:10.1039/a709175c · Cited by 1,193
Microbial engineering for the production of advanced biofuels
Peralta‐Yahya, P., Zhang, F., del Cardayré, S. B., & Keasling, J. D. (2012) · Nature · doi:10.1038/nature11478 · Cited by 1,100
Cytochromes P450: a success story.
Werck‐Reichhart, D., & Feyereisen, R. (2000) · Genome biology · doi:10.1186/gb-2000-1-6-reviews3003 · Cited by 962
Beta-caryophyllene is a dietary cannabinoid.
Gertsch, J., Leonti, M., Raduner, S., Racz, I., Chen, J.-Z., Xie, X.-Q., Altmann, K.-H., Karsak, M., & Zimmer, A. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0803601105 · Cited by 906
Terpene synthases and the regulation, diversity and biological roles of terpene metabolism
Tholl, D. (2006) · Current Opinion in Plant Biology · doi:10.1016/j.pbi.2006.03.014 · Cited by 886
Isoprenoid biosynthesis: The evolution of two ancient and distinct pathways across genomes
Lange, B. M., Rujan, T., Martin, W., & Croteau, R. (2000) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.240454797 · Cited by 881
Flagged first, then by citations
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- Ramawat, K.G., and Mérillon, J.-M. (2013). Natural Products, Springer. · DOI
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Sorted by citations
Items 101–173 of 173
Mitu, S. A., Cummins, S. F., Reddell, P. W., & Ogbourne, S. M. (2020) · Fitoterapia · doi:10.1016/j.fitote.2020.104680 · Cited by 8
Vincent, M., Blanc-Garin, V., Chenebault, C., Cirimele, M., Farci, S., Garcia-Alles, L. F., Cassier‐Chauvat, C., & Chauvat, F. (2024) · International Journal of Molecular Sciences · doi:10.3390/ijms25073827 · Cited by 8
Biomarkers from Medicinal Plants
Pradhan, A. K., Chowra, U., Nath, M., Roy, S. J., Kalita, B. K., Kundu, B. S., Rajkumari, J. D., & Tanti, B. (2024) · Interdisciplinary biotechnological advances · doi:10.1007/978-981-97-4600-2_8 · Cited by 7
Samanta, D., Singh, R. N., Goh, K. M., & Sani, R. K. (2023) · Systems Microbiology and Biomanufacturing · doi:10.1007/s43393-023-00214-y · Cited by 7
Bilova, T. E., Golushko, N., Frolova, N., Soboleva, A., Silinskaya, S., Khakulova, A. A., Orlova, A. A., Sinetova, M. A., Los, D. A., & Frolov, A. (2025) · International Journal of Molecular Sciences · doi:10.3390/ijms26052201 · Cited by 7
Current utilization of microalgae in the food industry beyond direct human consumption
Esteves, A. F., Pires, J. C. M., & Gonçalves, A. L. (2021) · Elsevier eBooks · doi:10.1016/b978-0-12-821080-2.00005-8 · Cited by 7
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Prakash, D., & Gupta, C. (2018) · IGI Global eBooks · doi:10.4018/978-1-5225-7039-4.ch008 · Cited by 7
Effects of Cyanobacterial Secondary Metabolites on Phytoplankton Community Succession
Pei, Y., Xu, R., Hilt, S., & Chang, X. (2018) · Reference series in phytochemistry · doi:10.1007/978-3-319-76887-8_12-1 · Cited by 6
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Shourie, A., Vijayalakshmi, U., & Singh, A. (2021) · Elsevier eBooks · doi:10.1016/b978-0-12-823499-0.00021-3 · Cited by 6
Photosynthetic Resilience Under Stress: Unraveling the Role of Phytohormones and Phytometabolites
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A Targeted Metabolomic Procedure for the Identification of Isophorone Related Compounds in Honey
Karabagias, I. K. (2018) · Journal of Plant Biochemistry & Physiology · doi:10.4172/2329-9029.1000210 · Cited by 5
Plant Secondary Metabolites in Stress Tolerance
Koç, E., & Karayiğit, B. (2023) · Springer eBooks · doi:10.1007/978-3-031-37424-1_19 · Cited by 6
Liu, Y., Wei, D., Chen, W. N., & Li, A. Z. (2025) · Renewable Energy · doi:10.1016/j.renene.2025.123728 · Cited by 4
Simeis, D. D., Serra, S., Fonzo, A. D., & Secundo, F. (2021) · Chemistry · doi:10.3390/chemistry3030059 · Cited by 4
Killops, S. D., Bishop, A. N., Tegelaar, E. W., Urdal, K., Ghammari, M. R. K., & Weijers, J. W. H. (2023) · Frontiers in Geochemistry · doi:10.3389/fgeoc.2023.1241784 · Cited by 4
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Salehi, B., Rodrigues, C. F., Karaça, A. C., Gülseren, G., Åženol, E., Demircan, E., í–zçelik, B., Tütüncü, S., Sharopov, F. S., Sharifi‐Rad, J., et al. (2020) · Cellular and Molecular Biology · doi:10.14715/cmb/2020.66.4.28 · Cited by 5
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Llewellyn, C. A., Kapoore, R. V., Lovitt, R. W., Greig, C., Fuentes-Grünewald, C., & Kultschar, B. (2019) · Grand challenges in biology and biotechnology · doi:10.1007/978-3-030-25233-5_15 · Cited by 5
Newman, D. M., Sake, C. L., Metcalf, A. J., Davies, F. K., Cano, M., Krishnan, A., & Boyle, N. R. (2022) · Frontiers in Energy Research · doi:10.3389/fenrg.2022.896668 · Cited by 5
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Ribeiro, T., Reis, M. A., Vasconcelos, V. M., & Urbatzka, R. (2024) · Scientific Reports · doi:10.1038/s41598-024-83986-0 · Cited by 3
Du, Y., Guan, J., Xu, R., Liu, X., Shen, W., Ma, Y., He, Y., & Shen, S. (2017) · ALGAE · doi:10.4490/algae.2017.32.10.2 · Cited by 3
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“…ethanol and isobutanol are mainly derived from pyruvate-based pathways [27], fatty acids and alkanes from acetyl-CoA/fatty acyl-ACP metabolism, including the AAR/ADO alkane pathway [28] and terpenoids from the MEP pathway, which uses pyruvate and glyceraldehyde-3-phosphate as precursors [29].”
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Santos, F. M. S. D., Low, K. H., & Chai, L. C. (2022) · Research Square · doi:10.21203/rs.3.rs-1247479/v1 · Cited by 1
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Popin, R. V., Alvarenga, D. O., Castelo‐Branco, R., Fewer, D. P., & Sivonen, K. (2020) · Research Square · doi:10.21203/rs.3.rs-121751/v1
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Pérez-Carrascal, O. M., Tromas, N., Terrat, Y., Moreno, E., Giani, A., Marques, L. C. B., Fortin, N. Y., & Shapiro, B. J. (2021) · Figshare · doi:10.6084/m9.figshare.16689896
Rodrigues, J. S., Bourgade, B., Galle, K. R., & Lindberg, P. (2024) · Figshare · doi:10.6084/m9.figshare.26571010
Self-citationPérez-Carrascal, O. M., Tromas, N., Terrat, Y., Moreno, E., Giani, A., Marques, L. C. B., Fortin, N. Y., & Shapiro, B. J. (2021) · Figshare · doi:10.6084/m9.figshare.16689917
Pérez-Carrascal, O. M., Tromas, N., Terrat, Y., Moreno, E., Giani, A., Marques, L. C. B., Fortin, N. Y., & Shapiro, B. J. (2021) · Figshare · doi:10.6084/m9.figshare.16689926
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Kharwar, S., Parveen, Z., Singh, R. P., Gautam, Y., & Kumar, V. (2026) · 3 Biotech · doi:10.1007/s13205-026-04870-4
Poduschnick, L., Mihaescu, D., Nakielski, A., Dienst, D. D., Beuel, A.-K., Voß, L. F. J. M., Axmann, I. M. I., & Magnus, J. B. (2026) · SSRN Electronic Journal · doi:10.2139/ssrn.7019805
Foua, H., Chabili, A., Elmimouni, H., Douma, M., & Loudiki, M. (2026) · Waste and Biomass Valorization · doi:10.1007/s12649-026-03743-4
Cen, C., Zhang, K., Shuai, Y., Yao, Z., & Yu, Z. (2026) · Water Research · doi:10.1016/j.watres.2026.126933
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Kolling, D., Stemwedel, K., Taser, D., Jentsch, T., Schwoerer, S., Struwe, H., Bültemeier, A., Freiberg, J., Witte, C., Franke, J., et al. (2026) · Science · doi:10.1126/science.aeg1821
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Metadata
- Authors
- Pattanaik, B., & Lindberg, P.
- Affiliations
- Uppsala University (SE)
- Corresponding author
- Lindberg, Pia
- ORCID
- Lindberg, Pia
- Venue
- Life
- Publisher
- MDPI AG
- Published
- 2015-01-21
- Volume
- 5
- Issue
- 1
- Pages
- 269-293
- ISSN
- 2075-1729 (ISSN-L)
- PMC
- PMC4390852
- OpenAlex
- W2058582378
- Cited by
- 173
- References
- 152
- Citations by year
- 2026: 10 · 2025: 9 · 2024: 25 · 2023: 19 · 2022: 15 · 2021: 19 · 2020: 29 · 2019: 13 · 2018: 12 · 2017: 10 · 2016: 8 · 2015: 4
- FWCI
- 1.10
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Life (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Carl Tryggers Stiftelse för Vetenskaplig Forskning
- Knut och Alice Wallenbergs Stiftelse
- Energimyndigheten
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant biochemistry and biosynthesis
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
- Life Sciences › Immunology and Microbiology › Applied Microbiology and Biotechnology › Microbial Natural Products and Biosynthesis
- Keywords
- terpenoids, cyanobacteria, methylerythritol phosphate pathway, isopentenyl pyrophosphate, dimethylallyl diphosphate, terpenoid biosynthesis, metabolic engineering, heterologous production, biofuels
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