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Gene Review

HAE  -  receptor-like protein kinase 5

Arabidopsis thaliana

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High impact information on HAESA

  • Association of RLK5 with the KI domain is dependent on phosphorylation of RLK5 and can be abolished by dephosphorylation [1].
  • HAESA, an Arabidopsis leucine-rich repeat receptor kinase, controls floral organ abscission [2].
  • Immunodetection, immunoprecipitation, and protein kinase activity assays reveal HAESA is a plasma membrane serine/threonine protein kinase [2].
  • Histochemical analysis of transgenic plants harboring a HAESA promoter:: beta-glucuronidase reporter gene and in situ RNA hybridization experiments show HAESA expression in the abscission zones where the sepals, petals, and stamens attach to the receptacle, at the base of pedicels, and at the base of petioles where leaves attach to the stem [2].
  • The reduction of function of HAESA in transgenic plants harboring an antisense construct results in delayed abscission of floral organs, and the severity of the phenotype is directly correlated with the level of HAESA protein [2].

Biological context of HAESA


  1. Interaction of a protein phosphatase with an Arabidopsis serine-threonine receptor kinase. Stone, J.M., Collinge, M.A., Smith, R.D., Horn, M.A., Walker, J.C. Science (1994) [Pubmed]
  2. HAESA, an Arabidopsis leucine-rich repeat receptor kinase, controls floral organ abscission. Jinn, T.L., Stone, J.M., Walker, J.C. Genes Dev. (2000) [Pubmed]
  3. Biochemical properties of the autophosphorylation of RLK5, a receptor-like protein kinase from Arabidopsis thaliana. Horn, M.A., Walker, J.C. Biochim. Biophys. Acta (1994) [Pubmed]
  4. Expression of a gibberellin-induced leucine-rich repeat receptor-like protein kinase in deepwater rice and its interaction with kinase-associated protein phosphatase. van der Knaap, E., Song, W.Y., Ruan, D.L., Sauter, M., Ronald, P.C., Kende, H. Plant Physiol. (1999) [Pubmed]
  5. Isolation of a cDNA encoding a novel leucine-rich repeat motif from Sorghum bicolor inoculated with fungi. Hipskind, J.D., Nicholson, R.L., Goldsbrough, P.B. Mol. Plant Microbe Interact. (1996) [Pubmed]
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