Sweet potato adversity-tolerant associated protein IbFBA2, coding gene, recombinant vector and application

The invention discloses a sweet potato adversity-tolerant associated protein IbFBA2, a coding gene, a recombinant vector and application. The IbFBA2 protein is a protein formed by an amino acid sequence expressed as a sequence 2; the coding gene is a DNA molecule expressed by a sequence 1; the recombinant vector containing the coding gene is a recombinant vector obtained by inserting DNA molecules expressed by 28-1584 nucleotides of 5' terminal of the sequence 1 between two attR loci of pWGB12. The IbFBA2 protein and the coding gene and the recombinant vector thereof can regulate plants to respond to ABA stress; a transgenosis plant capable of responding to ABA treatment can be obtained by introducing the DNA molecule coding the IbFBA2 protein into a target plant. The IbFBA2 protein and the coding gene thereof have important application value in improvement of response to adversity stress of the plants; the foundation is established for cultivation of adversity-tolerant transgenosis plants. 本发明公开了甘薯耐逆相关蛋白IbFB