Cloning and molecular analysis of the Arabidopsis gene Terminal Flower 1

S. Ohshima, M. Murata, Wataru Sakamoto, Y. Ogura, F. Motoyoshi

Research output: Contribution to journalArticle

133 Citations (Scopus)

Abstract

The Arabidopsis gene Terminal Flower 1 (TFL1) controls inflorescence meristem identity. A terminal flower (tfl1) mutant, which develops a terminal flower at the apex of the inflorescence, was induced by transformation with T-DNA. Using a plant DNA fragment flanking the integrated T-DNA as a probe, a clone was selected from a wild-type genomic library. Comparative sequence analysis of this clone with an EST clone (129D7T7) suggested the existence of a gene encoding a protein similar to that encoded by the cen gene which controls inflorescence meristem identity in Antirrhinum. Nucleotide sequences of the region homologous to this putative TFL1 gene were compared between five chemically induced tfl1 mutants and their parental wild-type ecotypes. Every mutant was found to have a nucleotide substitution which could be responsible for the tfl1 phenotype. This result confirmed that the cloned gene is TFL1 itself. In our tfl1 mutant, no nucleotide substitution was found in the transcribed region of the gene, and the T-DNA-insertion site was located at 458 bp downstream of the putative polyadenylation signal, suggesting that an element important for expression of the TFL1 gene exists in this area.

Original languageEnglish
Pages (from-to)186-194
Number of pages9
JournalMGG Molecular & General Genetics
Volume254
Issue number2
DOIs
Publication statusPublished - 1997

Fingerprint

Molecular Cloning
Arabidopsis
Inflorescence
Genes
Meristem
Clone Cells
Nucleotides
Antirrhinum
Plant DNA
Ecotype
Polyadenylation
Genomic Library
Expressed Sequence Tags
Sequence Analysis
Phenotype
T-DNA
Proteins

Keywords

  • Arabidopsis thaliana
  • Inflorescence meristem
  • T-DNA tagging
  • Terminal flower mutant
  • TFL1 gene

ASJC Scopus subject areas

  • Genetics

Cite this

Cloning and molecular analysis of the Arabidopsis gene Terminal Flower 1. / Ohshima, S.; Murata, M.; Sakamoto, Wataru; Ogura, Y.; Motoyoshi, F.

In: MGG Molecular & General Genetics, Vol. 254, No. 2, 1997, p. 186-194.

Research output: Contribution to journalArticle

Ohshima, S. ; Murata, M. ; Sakamoto, Wataru ; Ogura, Y. ; Motoyoshi, F. / Cloning and molecular analysis of the Arabidopsis gene Terminal Flower 1. In: MGG Molecular & General Genetics. 1997 ; Vol. 254, No. 2. pp. 186-194.
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