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Acta Prataculturae Sinica ›› 2024, Vol. 33 ›› Issue (9): 81-93.DOI: 10.11686/cyxb2023373

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Identification and analysis of members of the FBA gene family in alfalfa

Xiao-tong WANG1(), Xiao-hong LI1, Xu-xia MA1, Wen-qi CAI1, Xue-li FENG1, Shu-xia LI1,2,3()   

  1. 1.College of Forestry and Prataculture,Ningxia University,Yinchuan 750021,China
    2.Ningxia Grassland and Animal Husbandry Engineering Technology Research Center of Ningxia University,Yinchuan 750021,China
    3.Key Laboratory for Model Innovation in Forage Production Efficiency,Ministry of Agriculture and Rural Affairs,Ningxia University,Yinchuan 750021,China
  • Received:2023-10-09 Revised:2023-12-27 Online:2024-09-20 Published:2024-06-20
  • Contact: Shu-xia LI

Abstract:

Fructose-1,6-bisphosphate aldolase (FBA) is a key enzyme in glycolysis, gluconeogenesis, and the Calvin cycle, and plays an important role in the regulation of plant growth and development and abiotic stresses. In this study, the alfalfa (Medicago sativaFBA gene family was identified at the genome-wide level using bioinformatics methods and analysed for physicochemical properties, phylogenetic relationships, chromosomal localization, gene structural features, promoter cis-acting elements and gene expression patterns. The results showed that there were 11 MsFBA genes in alfalfa, distributed on chromosomes 1, 4, 5, 7, 8 and contig633end. Analysis of physicochemical properties showed that MsFBAs encoded for between 111 and 437 amino acids; all of these proteins were predicted to be hydrophilic. Phylogenetic relationship analysis showed that MsFBA family proteins were classified into two subfamilies, and MsFBAs were highly conserved among different species. The results of collinear correlations between alfalfa, Arabidopsis thaliana and Medicago truncatulaFBAs showed higher homology between alfalfa and M. truncatula. The results of promoter cis-acting element prediction showed that many phytohormone-responsive elements and abiotic stress-responsive elements existed in the promoter region of MsFBAs. Analysis of the expression pattern of MsFBAs in different tissues and abiotic stresses showed that the expression of MsFBAs in aboveground tissues was significantly higher than that in belowground tissues, which was tissue-specific; the expression of MsFBAs was induced by low temperature, abscisic acid, drought, and salt stress, which indicated that MsFBAs have an important role in the regulation of abiotic stresses. This study provides initial data to support ongoing research on the function of FBA genes in alfalfa.

Key words: alfalfa, FBA gene family, bioinformatics, growth and development, abiotic stress