This Article Full Text Full Text (PDF) Supplemental Data All Versions of this Article: 140/3/890    most recent pp.105.072660v1 Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Web of Science (13) Citing Articles via Google Scholar Google Scholar Articles by Ferrario, S. Articles by Angenent, G. C. Search for Related Content PubMed PubMed Citation Articles by Ferrario, S. Articles by Angenent, G. C. Agricola Articles by Ferrario, S. Articles by Angenent, G. C.

DEVELOPMENT AND HORMONE ACTION

Control of Floral Meristem Determinacy in Petunia by MADS-Box Transcription Factors^1,[W]

Plant Research International, Business Unit Bioscience, 6700 AA Wageningen, The Netherlands (S.F., A.V.S., J.F., R.G.H.I., G.C.A.); and Centre of Bioengineering, Russian Academy of Sciences, 117312 Moscow, Russia (A.V.S.)

The shoot apical meristem (SAM), a small group of undifferentiated dividing cells, is responsible for the continuous growth of plants. Several genes have been identified that control the development and maintenance of the SAM. Among these, WUSCHEL (WUS) from Arabidopsis (Arabidopsis thaliana) is thought to be required for maintenance of a stem cell pool in the SAM. The MADS-box gene AGAMOUS, in combination with an unknown factor, has been proposed as a possible negative regulator of WUS, leading to the termination of meristematic activity within the floral meristem. Transgenic petunia (Petunia hybrida) plants were produced in which the E-type and D-type MADS-box genes FLORAL BINDING PROTEIN2 (FBP2) and FBP11, respectively, are simultaneously overexpressed. These plants show an early arrest in development at the cotyledon stage. Molecular analysis of these transgenic plants revealed a possible combined action of FBP2 and FBP11 in repressing the petunia WUS homolog, TERMINATOR. Furthermore, the ectopic up-regulation of the C-type and D-type homeotic genes FBP6 and FBP7, respectively, suggests that they may also participate in a complex, which causes the determinacy in transgenic plants. These data support the model that a transcription factor complex consisting of C-, D-, and E-type MADS-box proteins controls the stem cell population in the floral meristem.

The author responsible for distribution of materials integral to the findings presented in this article in accordance with the policy described in the Instructions for Authors (www.plantphysiol.org) is: Gerco C. Angenent (gerco.angenent{at}wur.nl).

^[W] The online version of this article contains Web-only data.

Article, publication date, and citation information can be found at www.plantphysiol.org/cgi/doi/10.1104/pp.105.072660.

^* Corresponding author; e-mail gerco.angenent{at}wur.nl; fax 31–317–423110.

Received October 10, 2005; returned for revision December 16, 2005; accepted December 28, 2005.

This article has been cited by other articles:

				N. Prunet, P. Morel, I. Negrutiu, and C. Trehin Time to Stop: Flower Meristem Termination Plant Physiology, August 1, 2009; 150(4): 1764 - 1772. [Full Text] [PDF]

				M. Alhagdow, F. Mounet, L. Gilbert, A. Nunes-Nesi, V. Garcia, D. Just, J. Petit, B. Beauvoit, A. R. Fernie, C. Rothan, et al. Silencing of the Mitochondrial Ascorbate Synthesizing Enzyme L-Galactono-1,4-Lactone Dehydrogenase Affects Plant and Fruit Development in Tomato Plant Physiology, December 1, 2007; 145(4): 1408 - 1422. [Abstract] [Full Text] [PDF]

				Flowering Newsletter bibliography for 2006 J. Exp. Bot., April 20, 2007; (2007) erm028v2. [Full Text] [PDF]

				R. Sablowski Flowering and determinacy in Arabidopsis J. Exp. Bot., March 1, 2007; 58(5): 899 - 907. [Abstract] [Full Text] [PDF]

				T. H. Teeri, A. Uimari, M. Kotilainen, R. Laitinen, H. Help, P. Elomaa, and V. A. Albert Reproductive meristem fates in Gerbera J. Exp. Bot., October 1, 2006; 57(13): 3445 - 3455. [Abstract] [Full Text] [PDF]