Transcription profiling of Arabidopsis overexpressers and mutants of TFs-gene LBD37 and LBD38 under different nitrogen regimes

ABSTRACT: Nitrogen (N) and nitrate (NO3-) per se regulate many aspects of plant metabolism, growth and development. N/NO3- also suppresses parts of secondary metabolism including anthocyanin synthesis. Molecular components for this repression are unknown. We report that three N/NO3--induced members of the LATERAL ORGAN BOUNDARY DOMAIN (LBD) gene family of transcription factors (LBD37, LBD38 and LBD39) act as negative regulators of anthocyanin biosynthesis in Arabidopsis (Arabidopsis thaliana). Over-expression of each of the three genes in the absence of N/NO3- strongly suppresses the key regulators of anthocyanin synthesis PAP1 and PAP2, genes in the anthocyanin-specific part of flavonoid synthesis, as well as cyanidin- but not quercetin- or kaempferol-glycoside production. Conversely, lbd37, lbd38

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Grit Rubin 

PROVIDER: E-GEOD-18818 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress