Fig. 4.

Calli from leaf explants. General view of 4-week-old calli of WT (a) and tae (b) mutant on the regeneration medium. Expression of CycB1;1:GUS in the calli of WT (c, e) and tae (d, f) mutant after 2 weeks (c, d) and 3 weeks (e, f) growth on callusogenesis medium. Bars correspond to (a, b) 1 cm and (c–f) 2 mm.