How Floral Meristems are Built
- 634 Downloads
The formation of flowers involves the activity of a genetic network that acts in meristems to specify floral identity. The main output of this network is the initiation of a developmental patterning program for the generation of floral organs. The first characteristic of meristem identity genes is their capacity to integrate the environmental and endogenous cues that regulate the onset of flowering. This mechanism synchronizes temporal and spatial information, ensuring that flowers arise in the correct location at the appropriate time. The second characteristic of this network is the mutual regulatory interactions established between meristem identity genes. These interactions provide flexibility and robustness against environmental noise and prevent reversion once the decision to flower has been made. Finally, the third feature is the overlap between the meristem identity and other developmental programs that operate simultaneously to regulate different aspects of the construction of flowers.
Keywordsfloral meristem identity genes flowering time genetic network
Unable to display preview. Download preview PDF.
- An, H., Roussot, C., Suárez-López, P., Corbesier, L., Vincent, C., Piñeiro, M., Hepworth, S., Mouradov, A., Justin, S., Turnbull, C., Coupland, G. 2004CONSTANS acts in the phloem to regulate a systemic signal that induces photoperiodic flowering of ArabidopsisDevelopment13136153626PubMedCrossRefGoogle Scholar
- Bowman, J.L., Alvarez, J., Weigel, D., Meyerowitz, E.M., Smyth, D.R. 1993Control of flower development in Arabidopsis thaliana by APETALA1 and interacting genesDevelopment119721743Google Scholar
- Goethe, J.W.v. 1790Versuch die Metamorphose der Pflanzen zu ErklärenC.W. EttingerGotha, GermanyGoogle Scholar
- Mouradov, A., Cremer, F., Coupland, G. 2002Control of flowering time: interacting pathways as a basis for diversityPlant Cell14(Suppl)S111S130Google Scholar
- Murfet, I.C. 1975Flowering in Pisum: multiple alleles at the lf locusHeredity358598Google Scholar
- Sawa, S., Watanabe, K., Goto, K., Liu, Y.G., Shibata, D., Kanaya, E., Morita, E.H., Okada, K. 1999bFILAMENTOUS FLOWER, a meristem and organ identity gene of Arabidopsis, encodes a protein with a zinc finger and HMG-related domainsGenes Dev.1310791088Google Scholar
- Steeves, S.T., Sussex, I.M. 1989Patterns in Plant DevelopmentCambridge University PressCambridge, UKGoogle Scholar
- Weigel, D., Meyerowitz, E.M. 1993LEAFY controls meristem identity in ArabidopsisAmasino, R. eds. Cellular Communications in PlantsPlenum PressNew York115122Google Scholar