PURPOSE: A method for improving drought stress resistance of a plant is provided to enable a transgenic plant to grow into a drought resistant race and to stably supply agricultural products. CONSTITUTION: A method for improving drought resistance of a plant comprises a step of overexpressing a protein with an amino acid sequence of sequence number 2 and improving drought resistance. A method for overexpressing the protein comprises: a step of transforming a plant with a recombinant expression vector containing a promoter and a gene encoding the protein or a step of transducing the gene into a plant cell. The gene has a base sequence of sequence number 1. The promoter is inducible RD29A promoter. The plant includes potato, barley, corn, wheat, rye, grass, sugar cane, or onion. The recombinant expression vector is pBINRD29A vector.본 발명은 건조 저항성 단백질의 세포내 수준을 증가시켜 식물의 건조 저항성을 향상시키는 방법에 관한 것으로, 본 발명에 따라 건조 스트레스에 대한 저항성 유전자로 형질전환된 식물체는 건조 저항성 품종으로 육성 가능하며, 이로부터 지구 온난화 등 갑작스런 기후 변화에도 생산성에 영향을 받지 않고 안정적인 농산물 공급이 가능하다.
