The effect of kinetin on the photosynthetic apparatus ofSinapis alba

✍ Scribed by R. Zerbe; A. Wild

• Publisher: Springer
• Year: 1980
• Tongue: English
• Weight: 508 KB
• Volume: 1
• Category: Article
• ISSN: 0166-8595
• DOI: 10.1007/bf00020075

✦ Synopsis

The influence of kinetin during the development of primary leaves of Sinapis alba was investigated. Kinetin treatment (6 ppm) induced an increase of dry weight, of soluble reducing sugars, soluble protein, chlorophylls, carotenoids and cytochrome f; a higher ratio of chlorophyll a to chlorophyll b, higher rates of CO 2 fixation per fresh weight and higher activity of nitrite reductase, were also found. These effects are comparable with strong and blue light adaptations. On the other hand, the Hill activity with ferricyartide as the electron acceptor, the rates of CO2 f'Lxation per chlorophyll, the ratios of chlorophyll to cytochrome f and of protein to chlorophyll did not change. Therefore we assume that the kinetin induced and the light induced adaptations are brought about by different causal reaction chains.