Cited by 135Algal biology and biofuel productionMicrobial Metabolic Engineering and BioproductionAquatic Ecosystems and Phytoplankton Dynamics

Enhanced accumulation of glycogen, lipids and polyhydroxybutyrate under optimal nutrients and light intensities in the cyanobacterium Synechocystis sp. PCC 6803

Monshupanee, T., Incharoensakdi, A.·2014·Journal of Applied Microbiology

Abstract

AIMS: Glycogen (GL) and lipids (LP) are efficient biofuel substrates, whereas polyhydroxybutyrate (PHB) is a potent biodegradable plastic. This study aimed to increase accumulation of these three compounds in Synechocystis sp. PCC 6803. METHODS AND RESULTS: Under autophototrophic growth, co-accumulation of the three compounds reached maximum level in a mid-stationary phase at 39·2% of dry weight (22·7% GL, 14·1% LP and 2·4% PHB). Nitrogen deprivation increased this to 61·5% (36·8% GL, 11·2% LP and 13·5% PHB), higher than that achieved by phosphorus, sulfur, iron or calcium deprivation. Combining nitrogen deprivation with 0·4% (w/v) glucose addition for heterophototrophic growth and optimizing the light intensity (200 μmol photons m(-2) s(-1) ) synergistically enhanced combined accumulation to 71·1% of biomass (41·3% GL, 16·7% LP and 13·1% PHB), a higher level than previously reported in Synechocystis. However, the maximum coproductivity of GL, LP and PHB (at 0·72 g l(-1) ) was obtained in the 12-day heterophototrophic culture without nitrogen deprivation. CONCLUSION: Accumulation of GL, LP and PHB was enhanced under both autophototrophic and heterophototrophic conditions by optimizations of nutrient and light supplies. SIGNIFICANCE AND IMPACT OF THE STUDY: This study provides a means for increasing co-production of potent bioenergy substrates and useful biomaterials in Synechocystis which may also be applicable to other cyanobacteria.

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Crossref · 10.1111/jam.12409

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  • Glycogen can be degraded via enzymatic hydrolysis (saccharification) and fermented into bioethanol.

    “This polysaccharide can be degraded via enzymatic hydrolysis (saccharification) and fermented into bioethanol [28].”
  • Monshupanee and Incharoensakdi found that total glycogen content increased from 15.1 to 28.9% DW under phosphorus deprivation, with biomass production not compromised.

    “Another example of the enhancement in the production of glycogen via phosphorus deprivation is in Monshupanee and Incharoensakdi [28], where the total glycogen content increased from 15.1 to 28.9% DW.”

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Authors
Monshupanee, T., & Incharoensakdi, A.
Affiliations
Chulalongkorn University (TH)
Corresponding author
Monshupanee, T.
Venue
Journal of Applied Microbiology
Published
2013-12-19
Volume
116
Issue
4
Pages
830-838
ISSN
1364-5072 (ISSN-L)
OpenAlex
W2037601555
Cited by
133
References
37
Citations by year
2026: 5 · 2025: 10 · 2024: 20 · 2023: 10 · 2022: 16 · 2021: 17 · 2020: 9 · 2019: 14 · 2018: 10 · 2017: 9 · 2016: 6 · 2015: 6 · 2014: 1
FWCI
1.57
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Microbiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Thailand Research Fund (MRG 5480109)
  • Ratchadaphiseksomphot Endowment Fund of Chulalongkorn University (RES560530096-AM)
  • National Research Council of Thailand
  • Office of Higher Education Commission
  • National Research University (FW 0659A)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
Keywords
Synechocystis sp. PCC 6803, glycogen accumulation, lipid accumulation, polyhydroxybutyrate, nitrogen starvation, glucose supplementation, light intensity optimization, autotrophic growth, heterotrophic growth, biodegradable plastics, cyanobacteria
MeSH terms
Darkness, Glucose, Glycogen, Hydroxybutyrates, Light, Biomass, Synechocystis, Lipid Metabolism, Phototrophic Processes

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