Fig. 1.

MPK6 mutation causes three different seed phenotypes. (A, B) Seeds from wild-type plants (Wt, Col-0) (A) and mpk3 mutant (B) are shown for comparison to stable and distinguishable mpk6 mutant seed phenotypes. (C) Seeds resembling the wild type but with a bigger seed phenotype (mpk6wb). (D) Seeds displaying a rough coat raisin-like seed phenotype (mpk6rs). (E) Embryos protruding from the seed coat burst seed phenotype (mpk6bs), described previously by Bush and Krysan (2007). For the pictures, seeds from each class were pooled, but the proportion of each phenotype, obtained from 1000 analysed mpk6 seeds through several generations, is indicated. Bars, 500 µm.