Fig. 6. Representative vegetative growth phenotypes of the CSN3 co-suppression plants. (A) Leaf developmental phenotypes of the CSN3 transgenic plants. The plants in a, b and c were from the T₂ generation in the Columbia background. The plant in d was from the T₃ generation and in the Landsberg background. Scale bars: 5 mm. Arrows indicate defective leaves. (B) The developmental phenotypes of the CSN3 transgenic plants with similarity to auxin related mutants. The plants were from the T₃ generation in the Columbia background except that the plant in d was from the T₂ generation. Scale bars: 5 mm. Arrows indicate defective organs. (C) Top: seedlings producing no true leaves. Bottom: northern blot analysis of the STM gene in transgenic and wild-type plants. The seedling shown was from the T₃ generation in the Columbia background.