Figure 4.

Developmental Patterns of Axillary Buds in the Wild Type and tab1-1.

(A) to (E) Longitudinal sections of the shoot apex (A) and the region where the axillary buds initiate ([B] to [E]).

(F) to (J) Expression patterns of OSH1 during the formation of axillary buds in the wild type. Brackets indicate the premeristem zone.

(K) to (M) Longitudinal sections of the region where the axillary buds should form in tab1-1. Development of the premeristem zone was terminated in some plants ([K] and [L]), and an abnormally elongated prophyll was formed in others (M). The arrowhead indicates flattened tissue where the meristem dome would form in the wild type.

(N) to (P) Expression patterns of OSH1 in tab1-1. Arrowheads and the asterisk indicate very weak ([N] and [P]) and narrow (O) expression of OSH1.

am, axillary meristem; ap, abnormal prophyll; pp, prophyll. Bars = 50 μm.