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Journal of Experimental Botany, Vol. 51, No. 349, pp. 1475-1477, August 2000
© 2000 Oxford University Press

Short Communications

The significance of {alpha}-amylase under anoxia stress in tolerant rhizomes (Acorus calamus L.) and non-tolerant tubers (Solanum tuberosum L., var. Désirée)

S. Arpagaus and R. Braendle1

Institute of Plant Physiology, University of Berne, Altenbergrain 21, CH-3013 Berne, Switzerland

Abstract

Rhizomes of Acorus calamus L. were able to maintain a functional {alpha}-amylase under anoxia, whereas a steep decrease in the enzyme protein content and activity took place in potato tubers. The stress-induced control in tubers occurred on the translational level. It is suggested that this decrease is one of the key factors with regard to anoxia intolerance.

Key words: {alpha}-Amylase, anoxia, starch mobilization, translational control.


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