A myb gene required for leaf trichome differentiation in Arabidopsis is expressed in stipules

Cell. 1991 Nov 1;67(3):483-93. doi: 10.1016/0092-8674(91)90523-2.


The GL1 gene is required for the initiation of differentiation of hair cells (trichomes) on the crucifer, Arabidopsis thaliana. This gene has been localized to a 4.5 kb DNA fragment by molecular complementation of gl1 mutants. DNA sequence analysis has shown that the protein encoded by GL1 contains a Myb DNA-binding motif. Southern analysis and subsequence analysis of isolated lambda clones has established that GL1 is a member of an extensive myb gene family in Arabidopsis. The putative GL1 promoter directs the expression of the GUS reporter gene in non-trichome-bearing structures that appear to be stipules. This pattern of expression suggests that GL1 may control the synthesis of a diffusible signal that activates the developmental pathway for trichome differentiation.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Amino Acid Sequence
  • Arabidopsis Proteins*
  • Base Sequence
  • Cell Differentiation
  • DNA-Binding Proteins / chemistry
  • DNA-Binding Proteins / genetics*
  • Gene Expression
  • Genes, Plant*
  • Molecular Sequence Data
  • Oligonucleotides / chemistry
  • Oncogenes*
  • Plant Proteins / genetics*
  • Plants / genetics*
  • Polymerase Chain Reaction
  • Restriction Mapping
  • Sequence Alignment
  • Time Factors


  • Arabidopsis Proteins
  • DNA-Binding Proteins
  • Oligonucleotides
  • Plant Proteins
  • GL1 protein, Arabidopsis

Associated data

  • GENBANK/M79448
  • GENBANK/S60911
  • GENBANK/S60914
  • GENBANK/S60917
  • GENBANK/S60919
  • GENBANK/S60920
  • GENBANK/S60969
  • GENBANK/S61522
  • GENBANK/S61524
  • GENBANK/S63567