Cytokinin and auxin intersection in root meristems
Source: PubMed Central
ABSTRACT Cytokinin promotes cell differentiation in plant roots by repressing auxin transport and responses at the meristem boundary.
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ABSTRACT: Plant hormones control most aspects of the plant life cycle by regulating genome expression. Expression of auxin-responsive genes involves interactions among auxin-responsive DNA sequence elements, transcription factors and trans-acting transcriptional repressors. Transcriptional output from these auxin signaling complexes is regulated by proteasome-mediated degradation that is triggered by interaction with auxin receptor-E3 ubiquitin ligases such SCF(TIR1). Auxin signaling components are conserved throughout land plant evolution and have proliferated and specialized to control specific developmental processes.Annual Review of Genetics 09/2009; 43:265-85. · 22.23 Impact Factor
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