Fig. S1 Free IAA concentrations in Arabidopsis thaliana seedlings upon Alternaria brassicicola infection over a time course.

Fig. S2 Neither infection with Pst DC3000 nor treatment with SA significantly increases free IAA concentrations in Arabidopsis thaliana.

Fig. S3 JA regulates the expression of auxin transport-related genes at the transcription level in Arabidopsis thaliana.

Fig. S4 The degradation of IAA28-myc upon Alternaria brassicicola infection over a time course in Arabidopsis thaliana.

Fig. S5 PDF1.2 (PLANT DEFENSIN 1.2) expression is not significantly compromised in auxin-related Arabidopsis thaliana mutants after systemic infection with Alternaria brassicicola.

Table S1 Primers used for q-PCR analysis in this study

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