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Owning the role of β-amylase in environmental stresses, this study was conducted to explore regulatory genes
(transcription factor and protein kinase genes) underlying the gene encoding β-amylase (BAMY1)
(LOC_Os10g32810) expression. Identification of transcription factor and protein kinase genes which are coexpressed
with the BAMY1 gene may provide a deeper insight into elucidation of the underlying regulatory
mechanism of the BAMY1 gene expression. In this regard, co-expression analysis was conducted on the BAMY1
gene using co-expression tool embedded in Genevestigator based on 2836 microarray samples. Co-expression
analysis derived the top 25 most positive correlated candidate genes as co-expressed genes. Searching for genes
encoding transcription factor and protein kinases among co-expressed genes subset revealed several candidate
regulatory genes including one transcription factor and three protein kinases that probably linked to the BAMY1
gene regulation. Continued functional characterization of these candidate regulatory genes may contribute to
further increase the knowledge of the regulatory mechanisms underlying BAMY1 gene expression. Overall, the
present study led to identification of prioritized targets as a worthwhile resource for follow up studies in a quick
and simplicity manner.