Characterization of a weak allele of the GL1 gene of Arabidopsis thaliana

Jeffrey J. Esch, David G. Oppenheimer, M. David Marks

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35 Scopus citations


A genomic clone containing the gl1-2 allele has been isolated and sequenced. The predicted amino acid sequence of the gl1-2 protein is identical to that of the GL1-Col allele up to position 201. At this point in the coding region of gl1-2 there is a deletion relative to the wild-type sequence that results in an in-frame stop codon at position 202. This deletion removes 27 amino acid residues, including a highly negatively charged region, from the predicted gl1-2 polypeptide. The loss of this negatively charged carboxy-terminal region from the gl1-2 product is most likely the cause of the partial loss of gene activity which results in a reduction in leaf trichome initiation.

Original languageEnglish (US)
Pages (from-to)203-207
Number of pages5
JournalPlant molecular biology
Issue number1
StatePublished - Jan 1 1994


  • Myb
  • cell expansion
  • plant development
  • transcription factor
  • trichome


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