Journal article
The influence of day length on circadian rhythms of Neochloris oleoabundans
Algal research (Amsterdam), Vol.22, pp.31-38
03/01/2017
DOI: 10.1016/j.algal.2016.12.001
Abstract
In this study the influence of day length on circadian rhythms of N. oleoabundans was investigated. N. oleoabundans was grown in a photobioreactor continuously operated (turbidostat), under various day/night (D/N) cycles; 20D4N, 16D8N and 12D12N. The following variables showed to be regulated by the circadian clock: maximum growth rate, start of starch synthesis and DNA replication to 4 and 8 copies. Timing of these processes was not influenced by day length. The length of the photoperiod caused changes in biomass composition, especially due to variations in starch content. In longer days, more starch was accumulated. Starch was used for cell division probably also when cell division occurred in the light. Therefore, also the timing of cell division should be considered in the production of microalgae biomass. This timing mechanism can be explored to produce biomass with a desired concentration of protein, lipids, carbohydrates or pigments.
•Maximum growth rate was reached 6–7h after ‘sunrise’.•Starch synthesis started 6–7h after ‘sunrise’.•Replication of DNA to 4–8 copies seemed to be regulated by the circadian clock.•More starch was accumulated in longer days.•Timing of cell division should be considered in microalgae production.
Details
- Title: Subtitle
- The influence of day length on circadian rhythms of Neochloris oleoabundans
- Creators
- L. de Winter - Wageningen University & ResearchI.T.D. Cabanelas - Wageningen University & ResearchA.N. Órfão - Wageningen University & ResearchE. Vaessen - Wageningen University & ResearchD.E. Martens - Wageningen University & ResearchR.H. Wijffels - Wageningen University & ResearchM.J. Barbosa - Bioprocess Engineering, Wageningen University (www.algae.wur.nl), PO Box 8129, 6700 EV Wageningen, The Netherlands
- Resource Type
- Journal article
- Publication Details
- Algal research (Amsterdam), Vol.22, pp.31-38
- DOI
- 10.1016/j.algal.2016.12.001
- ISSN
- 2211-9264
- eISSN
- 2211-9264
- Publisher
- Elsevier B.V
- Language
- English
- Date published
- 03/01/2017
- Academic Unit
- International Programs; Spanish and Portuguese
- Record Identifier
- 9984398033602771
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