WRKY transcription factors are one of the largest multigene families of transcriptional regulators in plants. The transcription factors were named WRKYs after the conserved WRKY amino acid sequence in the DNA binding domain. WRKY transcription factors play roles in response to biotic and abiotic stresses. The GmWRKY promoter family was selected based on the coding region of the gene, as well an interesting response to stress, based on microarray data.