Main Reaction: Putrescine >> Spermidine

Reference: PubMed ID: 22912643
Authors: Fellenberg C, Ziegler J, Handrick V, Vogt T
Title: Polyamine Homeostasis in Wild Type and Phenolamide Deficient Arabidopsis thaliana Stamens.
Published: 2012 Aug 17

Putrescine --> Spermidine