Abstract
We have studied the effect of glucose on different enzyme activities in callus cultures of N.plumbaginifolia. We provided evidence that the increase in glucose concentration represses the synthesis of GDH, AcPh and MDH whereas ADH and LDH are unaffected. When glucose repressed cultures were transferred to the low glucose concentration medium the activity of GDH and AcPh resumed to the level shown by non repressed cultures. Sucrose and fructose were as effective as glucose in repressing GDH activity. These results support the hypothesis of the existence of a catabolite dependent regulation of enzyme synthesis in higher plants.
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Restivo, F.M., Tassi, F., Maestri, E. et al. The ’glucose effect’ in callus cultures ofNicotiana plmmbaginifolia is enzyme specific. Biol Plant 31, 104–112 (1989). https://doi.org/10.1007/BF02907240
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DOI: https://doi.org/10.1007/BF02907240