1. } Spcdc25 G2/M Cell cycle iPA (low) Lateral roots Development IAA
(high)
Ethylene signalling
Small
isodiametric
cells
in RAM
Cellular
architecture
Fig. 7. Cross talk between Spcdc25, hormonal signalling
and development
Spcdc25 depletes and replaces cytokinins at the G2/M transition of the cell cycle
(Orchard et al., 2005), depletes iPA and raises IAA to promote lateral root formation
and stimulates ethylene signalling to promote small isodiametric cells in cortex and
stele of primary roots (data reported here).
Figure 7 Spadafora et al.