Fuente: WIPO "biotechnology" Instant invention relates to a method for the modification or delay of plant differentiation and/or development by tissue- and/or developmental-specific expression of a deacetylase (deac) encoding a protein exhibiting N-acetyl-PPT (e.g., N-acetyl-phosphinothricine) deacetylase activity in combination with the application of a composition containing one or more non-toxic compounds (e.g., N-acetyl-PPT), allowing - through deacetylation within the plant cell of N-acetyl-PPT - inducible and selective modification of meristem cells within a living plant in order to modify differentiation and/or development of the plant.