The influence of day length on circadian rhythms of Neochloris oleoabundans

L. de Winter; I.T.D. Cabanelas; A.N. Órfão; E. Vaessen; D.E. Martens; R.H. Wijffels; M.J. Barbosa

doi:10.1016/j.algal.2016.12.001

The influence of day length on circadian rhythms of Neochloris oleoabundans

L. de Winter, I.T.D. Cabanelas, A.N. Órfão, E. Vaessen, D.E. Martens, R.H. Wijffels, M.J. Barbosa^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

17 Citations (Scopus)

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.

Original language	English
Pages (from-to)	31-38
Journal	Algal Research
Volume	22
DOIs	https://doi.org/10.1016/j.algal.2016.12.001
Publication status	Published - 2017

Keywords

Biomass composition
Cell cycle
Circadian clock
Day/night cycle
Microalgae

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10.1016/j.algal.2016.12.001

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title = "The influence of day length on circadian rhythms of Neochloris oleoabundans",

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.",

keywords = "Biomass composition, Cell cycle, Circadian clock, Day/night cycle, Microalgae",

author = "{de Winter}, L. and I.T.D. Cabanelas and A.N. {\'O}rf{\~a}o and E. Vaessen and D.E. Martens and R.H. Wijffels and M.J. Barbosa",

year = "2017",

doi = "10.1016/j.algal.2016.12.001",

language = "English",

volume = "22",

pages = "31--38",

journal = "Algal Research",

issn = "2211-9264",

publisher = "Elsevier",

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TY - JOUR

T1 - The influence of day length on circadian rhythms of Neochloris oleoabundans

AU - de Winter, L.

AU - Cabanelas, I.T.D.

AU - Órfão, A.N.

AU - Vaessen, E.

AU - Martens, D.E.

AU - Wijffels, R.H.

AU - Barbosa, M.J.

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - Biomass composition

KW - Cell cycle

KW - Circadian clock

KW - Day/night cycle

KW - Microalgae

U2 - 10.1016/j.algal.2016.12.001

DO - 10.1016/j.algal.2016.12.001

M3 - Article

AN - SCOPUS:85004168871

SN - 2211-9264

VL - 22

SP - 31

EP - 38

JO - Algal Research

JF - Algal Research

ER -

The influence of day length on circadian rhythms of Neochloris oleoabundans

Abstract

Keywords

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