Cited by 231Algal biology and biofuel productionPhotosynthetic Processes and MechanismsMicrobial Metabolic Engineering and Bioproduction

Genetic Engineering of the Calvin Cycle toward Enhanced Photosynthetic CO2 Fixation in Microalgae

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Yang, Bo, Liu, Jin, Ma, Xiaonian, Guo, Bingbing, Liu, Bin, Wu, Tao, Jiang, Yue, Chen, Feng·2017·Biotechnology for Biofuels

Abstract

Photosynthetic microalgae are emerging as potential biomass feedstock for sustainable production of biofuels and value-added bioproducts. CO 2 biomitigation through these organisms is considered as an eco-friendly and promising alternative to the existing carbon sequestration methods. Nonetheless, the inherent relatively low photosynthetic capacity of microalgae has hampered the practical use of this strategy for CO 2 biomitigation applications. Here, we demonstrate the feasibility of improving photosynthetic capacity by the genetic manipulation of the Calvin cycle in the typical green microalga Chlorella vulgaris . Firstly, we fused a plastid transit peptide to upstream of the enhanced green fluorescent protein (EGFP) and confirmed its expression in the chloroplast of C. vulgaris . Then we introduced the cyanobacterial fructose 1,6-bisphosphate aldolase, guided by the plastid transit peptide, into C. vulgaris chloroplast, leading to enhanced photosynthetic capacity (~ 1.2-fold) and cell growth. Molecular and physiochemical analyses suggested a possible role for aldolase overexpression in promoting the regeneration of ribulose 1,5-bisphosphate in the Calvin cycle and energy transfer in photosystems. Our work represents a proof-of-concept effort to enhance photosynthetic capacity by the engineering of the Calvin cycle in green microalgae. Our work also provides insights into targeted genetic engineering toward algal trait improvement for CO 2 biomitigation uses.

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Authors
Yang, B., Liu, J., Ma, X., Guo, B., Liu, B., Wu, T., Jiang, Y., & Chen, F.
Affiliations
Peking University (CN)
Corresponding author
  • Liu, Jin
  • Chen, Feng
Venue
Biotechnology for Biofuels
Published
2017-10-05
Volume
10
Issue
1
Pages
229-229
ISSN
1754-6834 (ISSN-L)
OpenAlex
W2761439032
Cited by
231
References
49
Citations by year
2026: 20 · 2025: 42 · 2024: 29 · 2023: 27 · 2022: 39 · 2021: 32 · 2020: 20 · 2019: 16 · 2018: 5
FWCI
4.09
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Biotechnology for Biofuels (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
  • National Natural Science Foundation of China (CN) (31471717)
  • National Natural Science Foundation of China (31571807)
  • National High Technology Research and Development Program of China (2012AA023107)
  • Public Science and Technology Research Funds Projects of Ocean (201505032)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
Keywords
photosynthetic carbon fixation, Chlorella vulgaris, microalgae, fructose-1,6-bisphosphate aldolase, plastid transit peptide, chloroplast targeting, ribulose-1,5-bisphosphate regeneration

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