Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (1): 83-95.doi: 10.16420/j.issn.0513-353x.2020-0042

• Research Papers • Previous Articles     Next Articles

Genome-wide Identification and Expression Analysis of Chitinase Gene Family in Potato and Its Response to Exogenous Salicylic Acid and Jasmonic Acid

JIAN Hongju1, WAN Mengyuan1, FU Yi1, DING Yi1, JU Xisan1, SHANG Lina1, LI Hui1, WANG Jichun1, HU Bogeng2, LÜ Dianqiu1,**()   

  1. 1College of Agronomy and Biotechnology,State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University,Southwest University,Chongqing 400715,China
    2National Engineering Research Center for Potato,Dezhou,Shandong 253600,China
  • Received:2020-03-30 Revised:2020-06-02 Online:2021-01-25 Published:2021-01-29
  • Contact: Lü Dianqiu


In this study,the chitinase(CHI)gene family protein sequences of Arabidopsis thaliana were used for BlastP analysis in potato genome to obtain the CHI gene members of potato. Gene structure analysis,motif prediction,evolutionary tree construction,cis-acting elements and tissue expression analysis were also carried out. Our results showed that 26 members of potato CHI genes were identified and all StuChi gene members contained few introns,and motif 1-motif 6 contained GH19 domain with catalytic function. A total of 166 stress or hormone response elements were detected to participate in the regulation of StuChi gene expression. Evolutionary tree analysis showed that CHI were divided into six subfamilies. The quantitative expression of four tissues and the quantitative response to salicylic acid of StuChi genes showed that the tissue expression specificity indicated the differentiation of their functions.

Key words: potato, chitinase, gene, SA, JA, expression analysis

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