Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (10): 1797-1807.DOI: 10.3969/j.issn.1004-1524.2021.10.02

• Crop Science • Previous Articles     Next Articles

Identification and expression analysis of millet GH5 gene family

MENG Yaxuan(), SUN Yingqi, ZHAO Xinyue, WANG Fengxia, WENG Qiaoyun, LIU Yinghui*()   

  1. College of Agriculture and Forestry Science and Technology, Hebei North University, Zhangjiakou 075000, China
  • Received:2020-12-15 Online:2021-10-25 Published:2021-11-02
  • Contact: LIU Yinghui

Abstract:

Glycoside hydrolase 5 (GH5) belonged to the largest family of glycoside hydrolyases involved in the cell wall synthesis and degradation in plant. To identify and systematically characterize GH5 gene family, whole genome scan and bio-informatics analysis in millet were performed. In this study, total 18 GH5 genes were identified in millet, which unevenly distributed on eight chromosomes. By the gene structure and evolutionary analysis, SiGH5 proteins had a conserved domain, and overlapping alignment found that GH5 protein structures were highly conserved. Multi-species phylogenetic tree analysis indicated that GH5 proteins had species-specific characteristics. Gene structure analysis showed that the 18 GH5 genes contained exons and introns structure, some gene had the exon shuffling phenomenon. Expression analysis revealed that millet GH5 genes were specifically expressed in one or more organs, and significantly induced under different abiotic stress. In addition, a large number of hormone-responsive elements were identified in promoter region,which implied millet GH5 genes might play important role in response to plant growth and stresses.

Key words: millet, GH5 gene family, bioinformatics analysis, protein structure, expression analysis

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