Z029732 and Z068035 show short inflorescence internodes. A and B, Adult phenotypes of Z029732 (A) and Z068305 (B) mutants at 34 d under long-day conditions in the T1 generation. C, Comparison of adult phenotypes of Z029732 mutants at 30 d in the T2 generation. Plants from left to right are homozygous and heterozygous for the activation tag and wild type (ecotype Col-0). D, The activation-tagging T-DNA insertion sites in mutants. The triangles indicate the activation-tagging T-DNA insertion sites in Z029732, Z068305, and Z039302. The black bars on the triangles indicate the positions of the four copies of the CaMV 35S enhancer near the right border. E and F, Adult phenotype of overexpressing plants is similar, but more severe than Z029732 and Z068305. G and H, Real-time PCR analysis showing expression of At1g49770 in the wild type, Z029732, Z039302, and Z068305 (G), and the wild type and At1g49770-overexpressing plants (At1g49770-ox1 and At1g49770-ox2; H). Expression levels of genes were normalized with ACT2 expression. Relative expression levels: expression levels of the At1g49770 genes in Z029732, Z039302, Z068305, At1g49770-ox1, and At1g49770-ox2 relative to the wild type.