Regulatory dephosphorylation of CDK at G2/M in plants: Yeast mitotic phosphatase cdc25 induces cytokinin-like effects in transgenic tobacco morphogenesis.
2011
Abstrakt
The data gained using the yeast mitotic activator, Spcdc25, expressing plants clearly argue for the existence and importance of activatory dephosphorylation at G2/M transition and its interaction with cytokinin signalling in plants. The observed cytokinin-like effects of Spcdc25 expression are consistent with the concept of interaction between cell cycle regulators and phytohormones during plant development.
The G2/M control of plant cell cycle, however, remains an elusive issue as doubts persist about the mode of activatory dephosphorylation, which in other eukaryotes is provided by Cdc25 phosphatase serving as a final all-or-nothing mitosis regulator.