Characterization of a WRKY transcription factor expressed in late torpedo-stage embryos of Solanum chacoense

Planta. 2004 May;219(1):185-9. doi: 10.1007/s00425-004-1253-2. Epub 2004 Mar 26.


A novel WRKY-like transcription factor was isolated from a screen for weakly expressed mRNAs in ovules in the self-incompatible wild potato species Solanum chacoense Bitt. This protein, named ScWRKY1, consisted of 525 amino acids and can be classified as a WRKY group-I member, having two WRKY domains. It is expressed at low levels in stems, roots, and petals, and expressed at much higher levels in leaves. Interestingly, although barely detectable in developing seeds, it is strongly and transiently expressed in fertilized ovules bearing late torpedo-staged embryos, suggesting a specific role during embryogenesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • DNA-Binding Proteins / genetics*
  • DNA-Binding Proteins / metabolism
  • Gene Expression Regulation, Plant*
  • Molecular Sequence Data
  • Plant Proteins / genetics*
  • Plant Proteins / metabolism
  • Seeds / growth & development*
  • Seeds / metabolism
  • Sequence Alignment
  • Sequence Homology, Amino Acid
  • Solanum / embryology*
  • Solanum / genetics
  • Transcription Factors / genetics*
  • Transcription Factors / metabolism


  • DNA-Binding Proteins
  • Plant Proteins
  • Transcription Factors