Signaling: Cytokinin Signaling

Living reference work entry


  • Cytokinin is a plant hormone involved in almost every aspect of plant growth and development.

  • Cytokinin signaling proceeds via a phosphorelay pathway that is similar to bacterial two-component systems.

  • Cytokinin two-component elements include histidine kinase receptors, which are activated by cytokinin binding, phosphotransfer proteins, which shuttle the phosphoryl group from the receptors to the final elements of the pathway, the response regulators, which mediate the biological outputs.


Histidine Kinase Receiver Domain Phosphoryl Group Cytokinin Receptor Cytokinin Signaling 
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Future Reading

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  5. Kim HJ, Chiang YH, Kieber JJ, Schaller GE. SCFKMD controls cytokinin signaling by regulating the degradation of type-B response regulators. Proc Natl Acad Sci U S A. 2013;110:10028–33.PubMedCentralPubMedCrossRefGoogle Scholar
  6. Tsai YC, Weir NR, Hill K, Zhang W, Kim HJ, Shiu SH, Schaller GE, Kieber JJ. Characterization of genes involved in cytokinin signaling and metabolism from rice. Plant Physiol. 2012;158:1666–84.PubMedCentralPubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Department of BiologyUniversity of North CarolinaChapel HillUSA

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