DIVERSITY IN THE MECHANISM OF CARBON DIOXIDE FIXATION INDUNALIELLA TERTIOLECTA(CHLOROPHYCEAE)1

Autor:	I. Morris, D. Mukerji, H. E. Glover
Rok vydání:	1978
Předmět:	biology RuBisCO Carbon fixation Chlorophyceae Plant Science Dunaliella Aquatic Science biology.organism_classification Photosynthesis C3 carbon fixation chemistry.chemical_compound chemistry Botany Carbon dioxide biology.protein Phosphoenolpyruvate carboxylase
Zdroj:	Journal of Phycology. 14:137-142
ISSN:	0022-3646
DOI:	10.1111/j.1529-8817.1978.tb02438.x
Popis:	The mechanism of photosynthetic carbon dioxide fixation in the green flagellate Dunaliella tertiolecta Butcher varies during growth in batch culture. Evidence for this change comes from three sources: i) algae from the stationary phase incorporated a greater proportion of the fixed carbon into amino arids and protein than did cells from the mid-exponential phase; ii) the activity of phosphoenolpyruvate carboxylase relative to that of ribulose-1, 5-di-phosphate carboxylase increased with age in batch culture; and, iii) cells from the stationary phase appeared to utilize the bicarbonate ion as the substrate for photosynthesis, whereas those from mid-exponential phase appeared to utilize fire carbon dioxide. These data suggest that a change of photosynthetic mechanism can occur within a single species of alga, depending on its physiological state.
Databáze:	OpenAIRE
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