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Effect of Different Sugars on Photosynthesis and Chlorophyll Fluorescence in Photoautotrophic Tomato Suspension Cell Cultures.
- Source :
- Photosynthetica; Dec2001, Vol. 39 Issue 4, p611-614, 4p
- Publication Year :
- 2001
-
Abstract
- The effects of metabolisable sugars sucrose and glucose along with non-metabolisable isomers of sucrose palatinose and turanose were tested. Rate of oxygen evolution ( P), electron transport rate (ETR), and photochemical quenching (q<subscript>p</subscript>) showed substantial decrease after 24 and 48 h by glucose and sucrose treatments, whereas there was no effect on all these parameters by the treatment with palatinose and turanose. Also the F<subscript>v</subscript>/F<subscript>m</subscript> ratio remained constant through the time of studies revealing that the maximal photochemical capacity of the cells was unchanged. Non-photochemical quenching (q<subscript>N</subscript>) showed a decrease compared to the control values by all the treatments. Hence P and Chl fluorescence parameter were affected only by those sugars which are used in the metabolic pathways and not by sugar analogues. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03003604
- Volume :
- 39
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Photosynthetica
- Publication Type :
- Academic Journal
- Accession number :
- 50070203
- Full Text :
- https://doi.org/10.1023/A:1015624600607