Background and Objective: With the completion of the Arabidopsis genome sequencing, the next challenge is the determination ofgene function. Post-translational modifications of proteins by small polypeptide are implicated in plant growth and development.Ubiquitin fold modifier 1 is a member of the ubiquitin like protein family. While, the enzymatic conjugation cascade of ubiquitin foldmodifier 1 has been elucidated in recent years, its biological role is still unknown. The present study focuses in elucidate the role of theufm1 in plants development. Materials and Methods: The researchers performed analyses of the development of wild-type Columbiaplants and mutants of the ubiquitin fold modifier 1 gene to identify and interpret phenotypic changes in plants and seeds. Data werestatistically analyzed with the Info Stat software. Results: In this study, evidence suggesting that ubiquitin fold modifier 1 is involved inthe normal development of the seeds. Conclusion: The ufm1 gene would affect the normal development of the seed, particularly of theembryo, causing high percentage of seed abortion.Fil: Cornejo, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; ArgentinaFil: Masuelli, Ricardo Williams. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentin