Redundant regulation of meristem identity and plant architecture by FRUITFULL, APETALA1 and CAULIFLOWER

Ferrandiz, C., Gu, Q., Martienssen, R., Yanofsky, M. F. (February 2000) Redundant regulation of meristem identity and plant architecture by FRUITFULL, APETALA1 and CAULIFLOWER. Development, 127 (4). pp. 725-734. ISSN 0950-1991

[img]
Preview
PDF (Paper)
Martienssen Development 2000b.pdf - Published Version

Download (415Kb) | Preview
URL: http://www.ncbi.nlm.nih.gov/pubmed/10648231

Abstract

The transition from vegetative to reproductive phases during Arabidopsis development is the result of a complex interaction of environmental and endogenous factors. One of the key regulators of this transition is LEAFY (LFY), whose threshold levels of activity are proposed to mediate the initiation of flowers. The closely related APETALA1 (AP1) and CAULIFLOWER (CAL) meristem identity genes are also important for flower initiation, in part because of their roles in upregulating LFY expression. We have found that mutations in the FRUITFULL (FUL) MADS-box gene, when combined with mutations in AP1 and GAL, lead to a dramatic non-flowering phenotype in which plants continuously elaborate leafy shoots in place of flowers. We demonstrate that this phenotype is caused both by the lack of LFY upregulation and by the ectopic expression of the TERMINAL FLOWER1 (TFL1) gene. Our results suggest that the FUL, AP1 and CAL genes act redundantly to control inflorescence architecture by affecting the domains of LFY and TFL1 expression as well as the relative levels of their activities.

Item Type: Paper
Uncontrolled Keywords: inflorescence meristem flowering time developmental phases flower development MADS-box LEAFY (LFY) TERMINAL FLOWER1 (TFL1) APETALA1 (AP1) CAULIFLOWER (CAL) FRUITFULL (FUL) arabidopsis floral development mads-box gene homeotic gene inflorescence development flower development leafy thaliana expression initiation organs
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification
bioinformatics > genomics and proteomics > genetics & nucleic acid processing
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function > gene expression
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function
organs, tissues, organelles, cell types and functions > tissues types and functions > meristem
organism description > plant
CSHL Authors:
Communities: CSHL labs > Martienssen lab
Depositing User: Matt Covey
Date: February 2000
Date Deposited: 13 Dec 2013 16:43
Last Modified: 13 Dec 2013 16:43
Related URLs:
URI: http://repository.cshl.edu/id/eprint/28973

Actions (login required)

Administrator's edit/view item Administrator's edit/view item
CSHL HomeAbout CSHLResearchEducationNews & FeaturesCampus & Public EventsCareersGiving