Fig. 6. Effects of treatment with exogenous auxin on embryo. (A,B) Five-day-old seedlings treated with 2,4-D during embryogenesis. In B, the seedling was cleared to visualize the vascular pattern. (C,D) Spatial expression pattern of DR5::GUS in mature embryos. Mock (C) and 2,4-D (D) treatment. The fused part of cotyledons is indicated by a red arrowhead in D.