Document Detail

A MADS domain gene involved in the transition to flowering in Arabidopsis.
MedLine Citation:
PMID:  11123798     Owner:  NLM     Status:  MEDLINE    
Flowering time in many plants is triggered by environmental factors that lead to uniform flowering in plant populations, ensuring higher reproductive success. So far, several genes have been identified that are involved in flowering time control. AGL20 (AGAMOUS LIKE 20) is a MADS domain gene from Arabidopsis that is activated in shoot apical meristems during the transition to flowering. By transposon tagging we have identified late flowering agl20 mutants, showing that AGL20 is involved in flowering time control. In previously described late flowering mutants of the long-day and constitutive pathways of floral induction the expression of AGL20 is down-regulated, demonstrating that AGL20 acts downstream to the mutated genes. Moreover, we can show that AGL20 is also regulated by the gibberellin (GA) pathway, indicating that AGL20 integrates signals of different pathways of floral induction and might be a central component for the induction of flowering. In addition, the constitutive expression of AGL20 in Arabidopsis is sufficient for photoperiod independent flowering and the over-expression of the orthologous gene from mustard, MADSA, in the classical short-day tobacco Maryland Mammoth bypasses the strict photoperiodic control of flowering.
R Borner; G Kampmann; J Chandler; R Gleissner; E Wisman; K Apel; S Melzer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Plant journal : for cell and molecular biology     Volume:  24     ISSN:  0960-7412     ISO Abbreviation:  Plant J.     Publication Date:  2000 Dec 
Date Detail:
Created Date:  2001-01-02     Completed Date:  2001-03-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9207397     Medline TA:  Plant J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  591-9     Citation Subset:  IM    
Swiss Federal Institute of Technology, Institute for Plant Sciences, Universitätstrasse 2, CH-8092 Zürich, Switzerland.
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MeSH Terms
Amino Acid Sequence
Arabidopsis / genetics*,  growth & development
Cloning, Molecular
DNA Transposable Elements
DNA, Complementary / chemistry,  genetics
DNA-Binding Proteins / genetics*
Gene Expression Regulation, Developmental
Gene Expression Regulation, Plant
MADS Domain Proteins
Molecular Sequence Data
Plant Proteins
Plants, Genetically Modified
Plants, Toxic
Sequence Alignment
Sequence Analysis, DNA
Sequence Homology, Amino Acid
Tobacco / genetics
Transcription Factors / genetics*
Reg. No./Substance:
0/DNA Transposable Elements; 0/DNA, Complementary; 0/DNA-Binding Proteins; 0/MADS Domain Proteins; 0/Plant Proteins; 0/Transcription Factors

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