Abstract
Chlorophyll fluorescence measurements were used to evaluate the effect of temperature on photoinhibition in Spirulina platensis cultures grown in tubular reactors outdoors. Cultures grown at 35 °C during the day time showed a lower reduction in the Fv/Fm ratio as compared to cultures grown at 25 °C. It is demonstrated that the lower temperature photoinhibited cells can undergo a complete recovery once transferred to low light and higher temperature. This recovery does not take place when 100 μg ml-1 chloramphenicol is added to cells. The recovery is light dependent and cells incubated in the dark at low temperature do not show a recovery in the Fv/Fm ratio. The data presented strongly support the hypothesis that photoinhibition takes place in outdoor Spirulina cultures. At the same time it is demonstrated that fluorescence measurements can be used as a fast reliable indication for photoinhibition in outdoor algal cultures.
| Original language | English |
|---|---|
| Pages (from-to) | 31-34 |
| Number of pages | 4 |
| Journal | Journal of Applied Phycology |
| Volume | 6 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Feb 1994 |
Keywords
- Spirulina
- fluorescence
- photoinhibition
- photosynthesis
- temperature
ASJC Scopus subject areas
- Aquatic Science
- Plant Science