Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published July 2008 | Supplemental Material
Journal Article Open

A Repressor Complex Governs the Integration of Flowering Signals in Arabidopsis

Abstract

Multiple genetic pathways act in response to developmental cues and environmental signals to promote the floral transition, by regulating several floral pathway integrators. These include FLOWERING LOCUS T (FT) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1). We show that the flowering repressor SHORT VEGETATIVE PHASE (SVP) is controlled by the autonomous, thermosensory, and gibberellin pathways, and directly represses SOC1 transcription in the shoot apex and leaf. Moreover, FT expression in the leaf is also modulated by SVP. SVP protein associates with the promoter regions of SOC1 and FT, where another potent repressor FLOWERING LOCUS C (FLC) binds. SVP consistently interacts with FLC in vivo during vegetative growth and their function is mutually dependent. Our findings suggest that SVP is another central regulator of the flowering regulatory network, and that the interaction between SVP and FLC mediated by various flowering genetic pathways governs the integration of flowering signals.

Additional Information

© 2008 Elsevier Inc. Received: April 2, 2008. Revised: April 29, 2008. Accepted: May 1, 2008. Published: July 7, 2008 . We thank P. Huijser, I. Lee, R. Amasino, M. Yanofsky, A. Samach, G. Coupland, D. Weigel, and N.-H. Chua for materials, and Y. Eshed and Y. He for critical reading of the manuscript. This work was supported by Academic Research Funds R-154-000-282-112 and R-154-000-337-112 from the National University of Singapore and R-154-000-263-112 from the Ministry of Education, Singapore, and intramural research funds from Temasek Life Sciences Laboratory.

Attached Files

Supplemental Material - mmc1.pdf

Files

mmc1.pdf
Files (541.3 kB)
Name Size Download all
md5:763770b9175a3eb1546ec1efe018e102
541.3 kB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 23, 2023