In planta functions of the Arabidopsis cytokinin receptor family

Since their discovery as cell-division factors in plant tissue culture about five decades ago, cytokinins have been hypothesized to play a central role in the regulation of cell division and differentiation in plants. To test this hypothesis in planta, we isolated Arabidopsis plants lacking one, two, or three of the genes encoding a subfamily of histidine kinases (CRE1, AHK2, and AHK3) that function as cytokinin receptors. Seeds were obtained for homozygous plants containing mutations in all seven genotypes, namely single, double, and triple mutants, and the responses of germinated seedlings in various cytokinin assays were compared. Both redundant and specific functions for the three different cytokinin…

• NS
  National Science Foundation
• UD
  U.S. Department of Energy
• UO
  University of Wisconsin-Madison
• AO
  Academy of Finland
• JS
  Japan Society for the Promotion of Science

  Awards: 15107001, 12142207
• NI
  National Institute of General Medical Sciences