Application of soybean gene GsPP2C-51 in improvement of plant drought tolerance

The invention discloses an application of a soybean gene GsPP2C-51 in improving the drought tolerance of plants. The soybean gene GsPP2C-51 is a gene for coding a protein with an amino acid sequence as shown in SEQ ID No.1. The invention also discloses a preparation method of the soybean gene GsPP2C-51. The expression of GsPP2C-51 is obviously induced by the treatment of drought, PEG (Polyethylene Glycol) and exogenous ABA (Abscisic Acid); the overexpression of the GsPP2C-51 improves the drought tolerance of transgenic hairy root composite soybean plants and transgenic arabidopsis thaliana, enhances the activity of SOD, POD and CAT under drought stress, but does not improve the tolerance to salt and cold. The results provide a basis for analyzing the effect of the GsPP2C-51-a1 in the abiotic stress reaction of the soybeans. 本发明公开了大豆基因GsPP2C-51在提高植物耐旱性上的应用，所述大豆基因GsPP2C-51为编码SEQ ID No.1所示氨基酸序列的蛋白的基因。干旱、PEG和外源ABA处理显著诱导了GsPP2C-51的表达；GsPP2C-51的过表达提高了转基因毛状根复合大豆植株和转基因拟南芥的耐旱性，并增强了干旱胁迫下SOD、POD和CAT的活性，但没有提高对盐和冷的耐受性。这些结