Walter Dewitte

TL;DR: Seven allelic recessive Arabidopsis mutants, designated superroot, are isolated, displaying several abnormalities reminiscent of auxin effects, including small and epinastic cotyledons, an elongated hypocotyl, the development of excess adventitious and lateral roots, a reduced number of leaves, and the absence of an inflorescence.

TL;DR: This work reviews plant cell cycle regulators and their control and highlights the fundamental conservation of underlying cell cycle mechanisms between animals and plants.

TL;DR: It is demonstrated that cell cycle exit in the G1-phase is required for normal cellular differentiation processes during plant development and a critical role for CYCD3 in the switch from cell proliferation to the final stages of differentiation is suggested.

TL;DR: This work shows, using cell-type-specific transcriptional effects of SHR and SCR combined with data from chromatin immunoprecipitation-based microarray experiments, that SHR regulates the spatiotemporal activation of specific genes involved in cell division.

TL;DR: It is concluded that CYCD3 activity is important for determining cell number in developing lateral organs and the relative contribution of the alternative processes of cell production and cell expansion to overall organ growth, as well as mediating cytokinin effects in apical growth and development.