RNA processing and Arabidopsis flowering time control

Biochem Soc Trans. 2004 Aug;32(Pt 4):565-6. doi: 10.1042/BST0320565.


Plants control their flowering time in order to ensure that they reproduce under favourable conditions. The components involved in this complex process have been identified using a molecular genetic approach in Arabidopsis and classified into genetically separable pathways. The autonomous pathway controls the level of mRNA encoding a floral repressor, FLC, and comprises three RNA-binding proteins, FCA, FPA and FLK. FCA interacts with the 3'-end RNA-processing factor FY to autoregulate its own expression post-transcriptionally and to control FLC. Other components of the autonomous pathway, FVE and FLD, regulate FLC epigenetically. This combination of epigenetic and post-transcriptional control gives precision to the control of FLC expression and flowering time.

MeSH terms

  • Arabidopsis / genetics
  • Arabidopsis / physiology*
  • Gene Expression Regulation, Plant / genetics
  • Genes, Plant
  • RNA Processing, Post-Transcriptional*