EFFECT OF SALICYLIC ACID ON PHOTOSYNTHESIS AND SOME ANTIOXIDANT ENZYMES OF STRESSED SCENEDESMUS OBLIQUUS CULTURES | ||||
| Al-Azhar Bulletin of Science | ||||
| Article 4, Volume 2008, Issue 12, December 2008, Page 91-108 PDF (296.87 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/absb.2008.10857 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| S. A. DESOUKY | ||||
| Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Assiut, 71524, Egypt | ||||
| Abstract | ||||
| This study followed the effect of salicylic acid on growth criteria, photosynthetic pigments, photosynthesis, respiration, proline and the activities of some antioxidant enzymes of stressed Scenedesmus obliquus cultured for 7 days. The growth criteria (cell number and dry weight) and total pigments ofnon- stressed and stressed Scenedesmus obliquus cultures were significantly increased, when the algal cultures were subjected to 200 mM NaCl and treated with 100and 200 ppm of salicylic acid. Also, Photosynthesis (oxygen evolution), respiration (dark oxygen uptake), proline, amino acids and catalase enzyme of non- salinized and salinized Scenedesmus obliquus cultured were significantly increased, when the algal cultures were subjected to 200 mM NaCl and treated with 100and 200 ppm of salicylic acid. However, both respiration (oxygen uptake) , lipid peroxidation as termed (malondialdhyde) and peroxidase were significantly decreased, when the algal cultures were subjected to 200 mM NaCl and treated with 400 ppm of salicylic. These values were compared with that of the control cultures. | ||||
| Keywords | ||||
| Scenedesmus obliquus; Photosynthesis; Respiration; Lipid peroxidation (malondialdhyde); catalase; peroxidase | ||||
|
Statistics Article View: 191 PDF Download: 305 |
||||
