Overexpression of AtSUMO1 Enhances the Mutant Phenotype of esd4-1 Plants.
(A) Comparison of the phenotypes of Ler (plant A1), esd4-1 (plant A2), transgenic esd4-1 expressing mature AtSUMO1 from the 35S promoter (plant A3), and transgenic Ler expressing mature AtSUMO1 from the 35S promoter (plant A4).
(B) Close-up of transgenic plant A3 shown in (A). The stake = 1 cm. Similar results were obtained with plants overexpressing mature AtSUMO2, mature AtSUMO3, precursor AtSUMO1, precursor AtSUMO2, and precursor AtSUMO3.