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Fig. S1 Expression of representative WRKY genes in the wild-type in response to osmotic stress.

Fig. S2 Expression level of osmotic stress-responsive genes in the wild-type plant after 15% polyethylene glycol (PEG) treatment in combination with various amounts of salicylic acid (SA).

Fig. S3 Expression of WRKY54 and WRKY70 in the wild-type in response to high salt, drought, cold and exogenous abscisic acid (ABA).

Fig. S4 Comparison of salt stress tolerance in Col-WT (wild-type), wrky54wrky70 and wrky54wrky70sid2-1 mutants, and the WRKY70-overexpressing line (S55).

Fig. S5 Comparison of drought stress tolerance in Col-WT (wild-type), wrky54wrky70 and wrky54wrky70sid2-1 mutants, and the WRKY70-overexpressing line (S55).

Fig. S6 Comparison of the stomatal density in the wild-type and wrky54wrky70 double mutant.

Fig. S7 Abscisic acid (ABA) levels in the wild-type (Col-WT), wrky54wrky70 and wrky54wrky70sid2-1 mutants, and the WRKY70-overexpressing line (S55) exposed to drought stress for 2 h.

Table S2 Primers used for quantitative reverse transcription-polymerase chain reaction (qRT-PCR)

nph12378-sup-0002-TablesS1-S3-S4.xlsxapplication/msexcel50K

Table S1 Analysis of gene ontology (GO) terms for the genes picked from the normalized dataset of the microarray

Table S3 Comparison of osmotic stress-related gene expression in wild-type plants (Col-WT), wrky54wrky70, sid2-1 and wrky54wrky70sid2-1 mutants under 15% polyethylene glycol (PEG) treatment during 1 d

Table S4 Genes downregulated by osmotic stress in the wild-type compared with those in the wrky54wrky70 double mutant