Cadmium induced accumulation of putrescine in oat avena sativa cultivar victory and bean phaseolus vulgaris cultivar pinto leaves
Weinstein, L.H.; Kaur-Sawhney, R.; Rajam, M.V.; Wettlaufer, S.H.; Galston, A.W.
Plant Physiology 82(3): 641-645
The effects of Cd2+ on putrescine (Put), spermidine (Spd), and spermine (Spm) titers were studied in oat and bean leaves. Treatment with Cd2+ for up to 16 hours in the light or dark resulted in a large increase in Put titer, but had little or no effect on Spd or Spm. The activity of arginine decarboxylase (ADC) followed the pattern of Put accumulation, and experiments with.alpha.-difluoromethylarginine established that ADC was the enzyme responsible for Put increase.