Back to Search
Start Over
The Effect of Diel Temperature and Light Cycles on the Growth of Nannochloropsis oculata in a Photobioreactor Matrix
- Source :
- PLoS ONE, Vol 9, Iss 1, p e86047 (2014), PLoS ONE
- Publication Year :
- 2014
- Publisher :
- Public Library of Science (PLoS), 2014.
-
Abstract
- A matrix of photobioreactors integrated with metabolic sensors was used to examine the combined impact of light and temperature variations on the growth and physiology of the biofuel candidate microalgal species Nannochloropsis oculata. The experiments were performed with algal cultures maintained at a constant 20u C versus a 15°C to 25°C diel temperature cycle, where light intensity also followed a diel cycle with a maximum irradiance of 1920 μmol photons m-2 s-1. No differences in algal growth (Chlorophyll a) were found between the two environmental regimes; however, the metabolic processes responded differently throughout the day to the change in environmental conditions. The variable temperature treatment resulted in greater damage to photosystem II due to the combined effect of strong light and high temperature. Cellular functions responded differently to conditions before midday as opposed to the afternoon, leading to strong hysteresis in dissolved oxygen concentration, quantum yield of photosystem II and net photosynthesis. Overnight metabolism performed differently, probably as a result of the temperature impact on respiration. Our photobioreactor matrix has produced novel insights into the physiological response of Nannochloropsis oculata to simulated environmental conditions. This information can be used to predict the effectiveness of deploying Nannochloropsis oculata in similar field conditions for commercial biofuel production. © 2014 Tamburic et al.
- Subjects :
- Chlorophyll
Chlorophyll a
Light
Photosystem II
General Science & Technology
Photoperiod
lcsh:Medicine
Photobioreactor
Marine Biology
Bioengineering
Aquaculture
Plant Science
Biology
Photosynthesis
Biochemistry
Photobioreactors
chemistry.chemical_compound
Engineering
Light Cycle
Botany
Microalgae
Biological Systems Engineering
lcsh:Science
Diel vertical migration
Multidisciplinary
Plant Biochemistry
Chlorophyll A
Physics
lcsh:R
fungi
Temperature
Agriculture
Equipment Design
Chemical Engineering
Light intensity
chemistry
Biofuels
Plant Physiology
Environmental chemistry
Algaculture
Interdisciplinary Physics
Phycology
lcsh:Q
Research Article
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....fbdac40547ded3783727f08d63df82d0