The photosynthesis of Dunaliella parva Lerche as a function of temperature, light and salinity
- C. JiménezAffiliated withDepartamento de Ecología, Facultad de Ciencias, Universidad de Málaga
- , F. X. NiellAffiliated withDepartamento de Ecología, Facultad de Ciencias, Universidad de Málaga
- , J. A. FernándezAffiliated withDepartamento de Fisiología Vegetal, Facultad de Ciencias, Universidad de Málaga
The photosynthetic behaviour of Dunaliella parva Lerche from the athalassic lagoon of Fuente de Piedra (Malaga, Southern Spain) was studied experimentally at three NaCl concentrations (1, 2 and 3 M), five temperatures (15, 23, 31, 38 and 42 °C) and nine different irradiances between 82 and 891 mol m-2 s-l. Results are analyzed to define the best growing conditions for the algae.
D. parva shows the highest photosynthetic rates at a NaCl molarity of 2 M, under a moderate light intensity (600 mol m-2 s-1) at 31 °C. Above this light intensity a clear photoinhibition of the photosynthesis was found at 2 M and 3 M of NaCl. D. parva is a halotolerant and a thermoresistant species as evidenced by its net photosynthesis rate and positive values of oxygen evolution at 42 °C.
Two methods for modelling photosynthesis vs. irradiance curves are discussed. The first is a single model, based on third-order polynomial equations, and the second is double model, based on hyperbolical Michaelis-Menten type functions and negative exponential to define photoinhibition.
KeywordsDunaliella parva net photosynthesis light temperature salinity
- The photosynthesis of Dunaliella parva Lerche as a function of temperature, light and salinity
- Book Title
- Saline Lakes
- Book Subtitle
- Proceedings of the Fourth International Symposium on Athalassic (inland) Saline Lakes, held at Banyoles, Spain, May 1988
- pp 165-172
- Print ISBN
- Online ISBN
- Series Title
- Developments in Hydrobiology
- Series Volume
- Springer Netherlands
- Copyright Holder
- Springer Science+Business Media B.V.
- Additional Links
- Dunaliella parva
- net photosynthesis
- Industry Sectors
- Editor Affiliations
- 1. Dpt. Ecologia, Fac. Biologia, Univ. Barcelona
- 2. Dpt. Zoology, Univ. of British Columbia
- Author Affiliations
- 3. Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain
- 4. Departamento de Fisiología Vegetal, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain
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