The cell cycle in Arabidopsis

Cell cycling is controlled by a complex series of events, each precisely monitored at multiple levels. Internal and external information must be integrated to enable the cell to make the crucial decision whether to divide or not. In all eukaryotes, progression through G1, S, G2, and M phases is driven by the activation of threonine/serine-specific cyclin-dependent kinases. Because plants have unique developmental features, the tuning of their cell cycle regulation must somehow be different. This review summarizes the current knowledge of the mechanisms of cell cycle control in the model plant Arabidopsis thaliana. (C) Elsevier, Paris.