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NAD kinase activity in wheat leaves under water deficit
1Department of Plant Biochemistry and Physiology, Institute of Plant Breeding and Acclimatization, Warszawa, Poland.
Acta Biochimica Polonica
|January 1, 1990
Abstract:
Total NAD kinase activity remained unaltered in the drought non-adapted wheat leaves under water deficit, but gradually decreased with water deficit in the adapted ones. The share of the calmodulin-dependent enzyme was significantly higher in the drought-hardened than in non-hardened plants; however, under severe water deficit the activity of the enzyme dropped by half. It seems, therefore, that NAD kinase activity does not limit phosphorylation of NAD in dehydrated plant tissues.