Table I.

Effect of P. brassicae inoculation on free polyamine concentrations in roots of the susceptible accession Col-0 and the partially resistant accession Bur-0 at 2, 7, 14, and 21 dpi

Values represent means of four independent experiments ±se.

Polyamine	Genotype	Inoculation	Polyamine Content
			2 dpi	7 dpi	14 dpi	21 dpi
			μmol g−1DW
Putrescine	Col-0	Noninoculated	0.37 ± 0.08	0.6 ± 0.16	0.54 ± 0.43	0.17 ± 0.04
		Inoculated	0.32 ± 0.11	0.58 ± 0.3	0.44 ± 0.14	0.26 ± 0.15
	Bur-0	Noninoculated	0.45 ± 0.17	0.46 ± 0.18	0.25 ± 0.03	0.22 ± 0.10
		Inoculated	0.38 ± 0.24	0.45 ± 0.17	0.35 ± 0.10	0.29 ± 0.08
Spermidine	Col-0	Noninoculated	0.3 ± 0.29	0.79 ± 0.13	1.8 ± 0.79	0.61 ± 0.82
		Inoculated	0.18 ± 0.06	2.02 ± 1.10	0.44 ± 0.29	0.87 ± 0.84
	Bur-0	Noninoculated	0.18 ± 0.1	0.42 ± 0.39	0.33 ± 0.39	0.63 ± 0.64
		Inoculated	0.33 ± 0.33	0.28 ± 0.1	0.18 ± 0.11	0.69 ± 0.72
Spermine	Col-0	Noninoculated	0.22 ± 0.17	0.35 ± 0.26	0.46 ± 0.55	0.06 ± 0.03
		Inoculated	0.18 ± 0.06	0.49 ± 0.45	0.08 ± 0.01	0.05 ± 0.02
	Bur-0	Noninoculated	0.14 ± 0.1	0.09 ± 0.04	0.07 ± 0.03	0.06 ± 0.01
		Inoculated	0.19 ± 0.13	0.14 ± 0.05	0.06 ± 0.02	0.09 ± 0.04