Abscisic acid induced stress-like polyamine pattern in wheat seedlings, and its reversal by potassium ions [DFMA, DFMO]

aba acide abscissique crecimiento croissance enzyme inhibitors estres growth inhibidores de enzimas inhibiteur d'enzyme ion exchange poliaminas polyamine polyamines potasio potassium putrescina putrescine racine roots stems stress tallo tige triticum aestivum