Removal of the sugar inhibition of flowering in Lemna gibba G3 by catecholamines

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概要

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• DL-Epinephrine (10^<-8>-10^<-7> M), DL-norepinephrine (10^<-6> M) and DL-isoproterenol (10^<-8>-10>-6> M) alleviated floral inhibition due to 1% of sucrose in Lemna gibba G3 The induction period extended by sucrose was curtailed by epinephrine, frond multiplication enhanced by the sugar being left unaltered. The pattern of action of catecholamines appeared to be very similar to that of cAMP. DL-Epinephrine, however, was ineffective in the presence of 10^<-7> M DL-propranolol which affected neither flower nor frond production by itself. Ouabain and nicotinic acid also nullified the epinephrine action on duckweed flowering. These and other relevant findings support the hypothesis that the cAMP-adenyl cyclase system participates in the processes of flower induction in this long-day plant.

• 日本植物生理学会の論文

著者

• Oota Y

  Biological Institute Nagoya University

関連論文

• Removal of the sugar inhibition of flowering in Lemna gibba G3 by catecholamines

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