An S-locus-related gene in Arabidopsis encodes a functional kinase and produces two classes of transcripts

Plant J. 1996 Sep;10(3):523-31. doi: 10.1046/j.1365-313x.1996.10030523.x.


ARK1 is a vegetatively expressed receptor protein kinase gene isolated from Arabidopsis thaliana based on its sequence similarity to Brassica genes involved in pollen-stigma signaling and the self-incompatibility response. This paper shows that the kinase domain of ARK1 autophosphorylates on serine and threonine residues when expressed as a recombinant fusion protein. ARK1 produces a 2.9 kb transcript encoding a transmembrane receptor protein kinase and a 1.4 kb transcript encoding the receptor domain alone. Constitutive high-level expression of ARK1 transcripts in transgenic Arabidopsis resulted in severe stunting and also disrupted normal cellular expansion and differentiation.

Publication types

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

MeSH terms

  • Arabidopsis / enzymology
  • Arabidopsis / genetics*
  • Arabidopsis / growth & development
  • Gene Expression Regulation, Plant
  • Genes, Plant*
  • Phenotype
  • Phosphorylation
  • Plants, Genetically Modified
  • Promoter Regions, Genetic
  • Protein Kinases / genetics*
  • Protein Kinases / metabolism*
  • RNA, Messenger / genetics*
  • RNA, Messenger / metabolism
  • RNA, Plant / genetics
  • RNA, Plant / metabolism
  • Transcription, Genetic


  • RNA, Messenger
  • RNA, Plant
  • Protein Kinases