Different induction of biogenic amine accumulation during cold acclimation in Triticeae genotypes with varying freezing tolerance

Abstract The appropriate timing of the accumulation biogenic amines is very important during cold acclimation due to their direct protective role and involvement in signaling processes. time course changes amount six them was compared a 3-week period freezing tolerant sensitive genotype rye, barley wheat. In general, greater faster cold-induced increase amine content observed genotypes three species ones. This change quick case putrescine, spermidine cadaverine reaching maximum after days freezing-tolerant rye genotype. There continuous spermine tyramine contents whole wheat while nearly constant levels were detected one. these two exhibited positive correlation with level tolerance each five sampling points. Based on correlations, coordinated adjustment studied occurred which could contribute efficient adaptation cold. addition, earlier induction may better acclimation.