Figure 4.

The Function of RSL Class I Proteins in the Formation of Structures that Develop from Individual Epidermal Cells Has Been Conserved Among Land Plants

(A and B) Papillae on P. patens gametophores from 1-month-old colonies. Arrows highlight axillary papillae. The scale bar represents 50 μm.

(A) More than one slime papilla develops at each node on wild-type gametophores (arrows).

(B) One or no slime papilla develops at each node of Pprsl1 Pprsl2 double mutant gametophores. The arrow identifies the single papilla that develops at a node of the Pprsl1 Pprsl2 double mutant.

(C–F) Five-day-old seedlings of A. thaliana. The scale bar represents 500 μm.

(C) Wild-type (with root hairs).

(D) Atrhd6-3 Atrsl1-1 double mutant (root hairless).

(E and F) Atrhd6-3 Atrsl1-1 double mutant transformed with 35S_pro:AtRHD6 (with root hairs) (E) and Atrhd6-3 Atrsl1-1 double mutant transformed with 35S_pro:MpRSL1 (F).

See also Figure S4.