Abstract:
:Several positive transcription factors regulate Arabidopsis anthocyanin biosynthesis. HY5, a component of light-signaling pathways, and PAP1, an R2R3-MYB transcription factor, share common regulatory targets on anthocyanin biosynthesis genes. The epistatic interactions between the two transcription factors are currently unknown. To address this problem, we analyzed crosses between hy5 and pap1 mutants (hy5pap1) or pap1D overexpressors (hy5pap1D), performed chromatin immunoprecipitation-qPCR, and determined the PAP1 promoter region through deletion analysis. The results show that HY5 regulates PAP1 expression via direct binding to G- and ACE-boxes in the promoter region, which suggests bifurcate regulation of anthocyanin biosynthesis by HY5 via transcriptional activation of PAP1.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Shin DH,Choi M,Kim K,Bang G,Cho M,Choi SB,Choi G,Park YIdoi
10.1016/j.febslet.2013.03.037subject
Has Abstractpub_date
2013-05-21 00:00:00pages
1543-7issue
10eissn
0014-5793issn
1873-3468pii
S0014-5793(13)00266-4journal_volume
587pub_type
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