Cited by 59Photosynthetic Processes and MechanismsAlgal biology and biofuel productionLight effects on plants

Flashing light enhancement of photosynthesis and growth occurs when photochemistry and photoprotection are balanced in Dunaliella salina

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Abu-Ghosh, Said, Fixler, Dror, Dubinsky, Zvy, Solovchenko, Alexei, Zigman, Miriam, Yehoshua, Yaron, Iluz, David·2015·European Journal of Phycology

Abstract

Photosynthesis and growth in Dunaliella salina were significantly (P ≤ 0.01) enhanced under flashing light with a light–dark cycle tailored for the minimal activation of the violaxanthin cycle (VC), in comparison with cultures grown under constant illumination of the same time-integrated photon dose. The experiments were performed without using inhibitors or any other experimental conditions other than light. The flashing light (FL) was optimally balanced for the growth and photosynthesis of D. salina, which was characterized by a decreased VC de-epoxidation rate. The high-light induction of non-photochemical quenching (NPQ) was significantly slower in the FL-acclimated cells compared with those acclimated to continuous illumination. The comparative investigation of the cell ultrastructure revealed distinct effects of high-light stress in cultures grown under continuous light; this was not the case under FL. We conclude that a slower activation of the VC takes place under balanced flashing light, when each flash is followed by a dark period long enough for utilization of the photons absorbed during the flash at a given irradiance. The activation kinetics of the VC and, hence, the induction of NPQ seem to play an important role in the enhancement of the photosynthesis observed in D. salina grown under flashing light. Potential use of these parameters for optimization of FL for microalgal cultivation is discussed.

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Crossref · 10.1080/09670262.2015.1069404

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  • Flashing light experiments increase cell concentration in final cultures of Chlorella kessleri and Dunaliella salina.

    “Flashing light experiments have been shown to increase cell concentration in final cultures of Chlorella kessleri (Park and Lee, 2000) and Dunaliella salina (Abu-Ghosh et al., 2015), and hold immense promise for optimising large scale cultivation.”

    From Cyanobacteria and microalgae in supporting human habitation on Mars (2022) · cites this paper as Abu-Ghosh et al., 2015

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Authors
Abu-Ghosh, S., Fixler, D., Dubinsky, Z., Solovchenko, A., Zigman, M., Yehoshua, Y., & Iluz, D.
Affiliations
  • The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University
  • Bar-Ilan University (IL)
  • Lomonosov Moscow State University (RU)
Venue
European Journal of Phycology
Published
2015-09-02
Volume
50
Issue
4
Pages
469-480
ISSN
  • 0967-0262 (ISSN-L)
  • 1469-4433
OpenAlex
W2204253281
Cited by
59
References
57
Citations by year
2026: 4 · 2025: 4 · 2024: 2 · 2023: 3 · 2022: 8 · 2021: 5 · 2020: 11 · 2019: 8 · 2018: 5 · 2017: 7 · 2016: 1 · 2015: 1
FWCI
2.02
Type
journal article
Language
en
Open access
Locations
European Journal of Phycology (publishedVersion)
Funders
  • Queen Mary University of London
  • Wageningen University and Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
Keywords
flashing lights, Dunaliella salina, photosynthesis enhancement, violaxanthin cycle, non-photochemical quenching, photoprotection, high light stress, light-dark cycle, microalgae cultivation, cell ultrastructure

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