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Fig. 5. Flower phenotypes of AtBRM-silenced plants. In all cases plants were grown under SD conditions. (A-D) Scanning electron micrographs of mature wild-type (A) and atbrm (B-D) flowers. Scale bar: 0.5 mm. The mutant flowers have a variety of phenotypes: (B) short petals and stamens, (C) bent carpel, (D) four stamens. The arrowhead in D indicates two fused stamens. (E) Higher magnification of fused stamens shown in D. Scale bar: 250 µm. (F) Gynoecium tip from an atbrm plant, stigma and style are absent. Scale bar: 10 µm. (G,H) Stamen filament cells from mature wild-type (G) and atbrm (H) flowers. Scale bar: 10 µm. (I) Sepaloid petal in an atbrm flower. Scale bar: 0.5 mm. (J) Abaxial cells from the sepaloid petal shown in I. Arrowheads indicate stomatal cells. Scale bar: 10 µm. (K) Abaxial cells from a wild-type petal. Scale bar: 10 µm. The atbrm plants belong to line 10.1 in all cases except C, which is line 29.1.





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