Related protein in plant dwarfing genes and their application GA2ox

The present invention discloses a plant and dwarfing GA2ox associated protein coding gene and application. The present invention provides a protein, is the following (a) or (b) :( a) a protein consisting of the amino acid sequence shown by Sequence Listing; (b) the amino acid sequence of one or several amino acid residues via a substitution and / or deletion and / or addition and plant dwarfism sequence derived from the protein group. In the present invention, introducing the recombinant plasmid containing the gene GA2ox tobacco by Agrobacterium transformation, to obtain the transgenic tobacco, the transgenic tobacco significant dwarf phenotype. The present invention is valuable for breeding dwarf plants.