Gene for enhancing draught-resistance of plant and its uses

The invention relates to a gene for improving the stress resistance of a plant the nucleotide sequence of which is expressed in the SEQ ID NO: 1. The nucleotide sequence expressed by the SEQ ID NO:1 is inserted into a vector to obtain the recombinant plasmid of the invention; the vector can select a known eukaryotic expression in the field. The recombinant plasmid is converted into tobaccos to obtain a transgenic plant. Test shows that based on an MS culture medium additionally provided with NaCl, mannitol and ABA, the transgenic plant grows better than a wild plant. After drying the transgenic plant and the wild plant for 18 days, the transgenic plant grows better than the wild plant. The detecting data for the content of malondialdehyde shows that the damage degree of the transgenic plant under stress conditions is lower than that of the wild plant. Therefore, the gene for improving the stress resistance of a plant can be applied in the fields of anti-drought of the plant and improving the salt improvement.