Figure 4.

Phenotypic characterization of wild type and stsr4 mutants (stsr4_3-55, stsr4_3-19, stsr4_3-278, and stsr4_3-698). Plants were grown in vitro for 20 days at 16 h light/8 h dark. Representative whole plant phenotypes in wild type and stsr4 mutants. The typical phenotype with node counts (A), petiole length (B), stem length (C), and midrib length (D) of each genotype was observed and photographed every 5 days. Node counts (number), petiole, stem, and midrip length (mm) of 20 days old wild-type plants were 8.3 ± 0.57, 10.73 ± 1.47, 38.37 ± 1.85, and 11.63 ± 0.85, respectively. Values represent the mean ± SE of six replicated experiments (each mean value represents the measured phenotype of four plants). Bars indicate SE. Student’s t-test; *p < 0.05, **p < 0.01.