TABLE 1.

General linear mixed model (GLM) comparing contributions of siderophore production, the direct siderophore effect and siderophore-mediated interactions on the dynamics of disease progression in planta^a

Variable	Lag phase before disease onset			Maximum rate of disease onset			Fraction of wilted plants
	df	F	P	df	F	P	df	F	P
Siderophore production	↓1	44.43	<0.01	1	2.57	0.2	1	1.72	0.19
Direct siderophore effect	1	1.64	0.2	1	1.64	0.11	↑1	9.99	<0.01
Siderophore-mediated interaction	1	0.47	0.49	↑1	39.27	<0.01	1	0.01	0.93
No. of residuals		100			100			100
Model summary	R2: 0.30; AIC: 384.33			R2: 0.28; AIC: −253.80			R2: 0.08; AIC: −174.09

^aAll response variables were treated as continuous variables. The table shows the most parsimonious models selected based on the Akaike information criterion (AIC) information. The upward and downward arrows denote positive and negative effects on response variables, respectively and the significant effects (P < 0.05) are highlighted in bold.