The invention relates to the technical field of
genetic engineering, in particular relating to a jujube tree ascorbate
peroxidase gene and application thereof in improving
stress resistance of plants. The
nucleotide sequence of the jujube tree ascorbate
peroxidase gene and the
amino acid sequence of the coding
protein of the jujube tree ascorbate
peroxidase gene are shown in sequence tables of SEQ ID NO:1 and SEQ ID NO:2. In the invention, the jujube tree ascorbate peroxidase gene is obtained to construct a
plant expression vector successfully transferred into an
arabidopsis strain, and the salt tolerance of the jujube tree ascorbate peroxidase gene is evaluated, thereby proving that the jujube tree ascorbate peroxidase gene can be used for improving the salt tolerance of the plants. In addition, a
prokaryotic expression vector constructed by the invention can be used for realizing induction and expression in
escherichia coli. According to the invention, the first-time separation of the jujube tree ZjAPX (Ascorbate
Peroxidase) gene is realized, and the gene can be used as a
target gene transferred to the plants so as to improve the
stress resistance, especially the salt tolerance of the plants, and has guiding significance in improving varieties of the plants, thereby providing
test data and laying a theoretical basis for sufficiently utilizing the excellent-resistance gene ofjujube trees to improve the
stress resistance of the plants.