reviewAnnual Review of Plant BiologyApr 29, 2004Closed access

MOLECULAR MECHANISM OF GIBBERELLIN SIGNALING IN PLANTS

TSTai‐ping SunFGFrank Gubler

Duke University · Commonwealth Scientific and Industrial Research Organisation · +1 more institution

PubMed
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Abstract

The hormone gibberellin (GA) plays an important role in modulating diverse processes throughout plant development. In recent years, significant progress has been made in the identification of upstream GA signaling components and trans- and cis-acting factors that regulate downstream GA-responsive genes in higher plants. GA appears to derepress its signaling pathway by inducing proteolysis of GA signaling repressors (the DELLA proteins). Recent evidence indicates that the DELLA proteins are targeted for degradation by an E3 ubiquitin ligase SCF complex through the ubiquitin-26S proteasome pathway.

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Topics & keywords

Topics
Keywords
  • Gibberellin
  • Ubiquitin ligase
  • Proteasome
  • Ubiquitin
  • Proteolysis
  • Signal transduction
  • Cell biology
  • Repressor
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