Two-component systems in plant signal transduction

Trends Plant Sci. 2000 Feb;5(2):67-74. doi: 10.1016/s1360-1385(99)01542-3.


In plants, two-component systems play important roles in signal transduction in response to environmental stimuli and growth regulators. Genetic and biochemical analyses indicate that sensory hybrid-type histidine kinases, ETR1 and its homologs, function as ethylene receptors and negative regulators in ethylene signaling. Two other hybrid-type histidine kinases, CKI1 and ATHK1, are implicated in cytokinin signaling and osmosensing processes, respectively. A data base search of Arabidopsis ESTs and genome sequences has identified many homologous genes encoding two-component regulators. We discuss the possible origins and functions of these two-component systems in plants.

Publication types

  • Review

MeSH terms

  • Arabidopsis / enzymology
  • Arabidopsis / genetics
  • Arabidopsis / metabolism*
  • Molecular Sequence Data
  • Signal Transduction*

Associated data

  • GENBANK/AB010073
  • GENBANK/AB011485
  • GENBANK/AB016872
  • GENBANK/AB019231
  • GENBANK/AB025641
  • GENBANK/AC001645
  • GENBANK/AC002560
  • GENBANK/AC004557
  • GENBANK/AC005310
  • GENBANK/AC007069
  • GENBANK/AF069441
  • GENBANK/N96794
  • GENBANK/T42057
  • GENBANK/T43076
  • GENBANK/W43046
  • GENBANK/Z17687