ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (6): 19-27. doi: 10.7668/hbnxb.20192387

Special Issue: Saline-alkali stress

• Crop Genetics & Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Molecular Characterization of Saline-Alkaline Responsive NAC Transcription Factors in Common Bean

ZHAI Lingxia1, YU Song1,2, HOU Yulong1, QIN Meng1, ZHU Xuetian1, WANG Xiaoqin1, YU Lihe1,2   

  1. 1. College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China;
    2. Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing 163319, China
  • Received:2021-05-31 Published:2021-12-28

Abstract: In order to further reveal the role of kidney common bean NAC gene in regulating plant growth and development and in response to abiotic stress, this research was used the salt-tolerant common bean variety HYD as the test material and used the Illumina HiSeq technology, the transcriptome of common bean leaf tissue under the NaHCO3 and NaCl treatments was constructed. A total of 8 saline-alkaline related NAC transcription factors were screened from the transcriptomic data, and carried out analysis of physicochemical property, systematic evolution, phosphorylation site prediction, protein secondary structure prediction, promoter element analysis, gene structure analysis, chromosomal location analysis and expression analysis. The result showed:The molecular weight of 8 common bean saline-alkaline response NAC genes was 23 676.36-44 354.33 ku, and the protein codes were 203-394 amino acids. The isoelectric point was between 4.74 and 8.86, of which 3 genes encoded acidic proteins, and 8 genes were divided into 4 subfamilies (a-d), positioning in 8 chromosomes, including 3 membrane-bound proteins, the number of serine was the largest in 8 proteins, there were 10-22, and the random coil structure accounts for the largest proportion, 68.0% to 84.5%. All 8 proteins were located in the nucleus. Under NaHCO3 treatment, 4 genes were up-regulated expression (log2FC>2), 2 genes were down-regulated expression (log2FC<-2), Under NaCl treatment, 1 gene was up-regulated expression (log2FC>2), 4 genes were down-regulated expression (log2FC<-2), 3 genes respond to both NaHCO3 and NaCl. A total of 10 promoter elements were found in 8 gene promoters, and each gene contained 3-7 elements. It indicated that these genes might be involved in the stress response of common beans.

Key words: Common bean, NAC transcription factor, Bioinformatics, Saline-alkali stress

CLC Number: 

Cite this article

ZHAI Lingxia, YU Song, HOU Yulong, QIN Meng, ZHU Xuetian, WANG Xiaoqin, YU Lihe. Molecular Characterization of Saline-Alkaline Responsive NAC Transcription Factors in Common Bean[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(6): 19-27. doi: 10.7668/hbnxb.20192387.

share this article