Figure 2.

Expression level of arginine decarboxylase (ADC), agmatine iminohydrolase (AIH), N-carbamoylputrescine amidase (NCPAH), arginase (ARG), ornithine decarboxylase (ODC), spermidine synthase (SPDS), spermine synthase (SPMS), diamine oxidase (DAO) and polyamine oxidase (PAO) genes in flax seedlings infected with pathogenic strains of Fusarium culmorum and Fusarium oxysporum and the non-pathogenic strain of Fusarium oxysporum (Fo47) at 6, 12, 24, and 48 h after inoculation. The data were obtained from real-time RT-PCR analysis. Actin was used as a reference gene and the transcript levels were normalized to the control plant (C). The data represent the mean ± standard deviations from three independent experiments. The significance of the differences between the means was determined using Student's t-test (^*P < 0.05, ^**P < 0.01). RQ, relative quantity.