the invention discloses maize bzip transcriptional factor , the genes encoding these factors and the use thereof . those transcriptional factors abp2 , abp4 and abp9 , respectively , are the proteins having the amino acid sequences shown by sequence 2 , 4 , and 6 in the sequence listing , or the proteins derived from thereof which are produced by substitution , deletion or addition of at least one or more amino acid residues of the amino acid sequence shown by sequence 2 , 4 and 6 in the sequence listing , having the same activity as the proteins shown by sequence 2 , 4 and 6 in the sequence listing . the genes abp2 , abp4 and abp9 encoding these said facters respectively , are the dna sequences having an identity of more than 90 % to the sequences shown by seq id no . 1 , 3 and 5 in the sequence listing and the encoded proteins having such same functions . the genes of the invention have important significance for breeding plant varieties with enhanced tolerance to abiotic stresses and for improving plant tolerance to abiotic stresses .