Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (5): 921-933.doi: 10.16420/j.issn.0513-353x.2020-0526

• Research Papers • Previous Articles     Next Articles

Genome-wide Identification and Expression Analysis of DRB Gene Family in Dimocarpus longan

CAI Roudi, LI Xue, CHEN Yan, XU Xiaoping, CHEN Xiaohui, LAI Zhongxiong*(), LIN Yuling*()   

  1. Institute of Horticultural Biotechnology,Fujian Agriculture and Forestry University,Fuzhou 350002,China
  • Received:2020-12-23 Revised:2021-03-22 Online:2021-05-25 Published:2021-06-07
  • Contact: LAI Zhongxiong,LIN Yuling;


In order to understand the potential functions of DRB(dsRNA-binding proteins)in longan,the bioinformatics analysis was carried out to identify members of the DRB gene family,and then their expression patterns were analyzed. The results showed that the DlDRB gene family contained eight members with two or three DSRM(double-stranded RNA binding motif)domains and could be distributed into five subgroups. The numbers of introns varied from one to seven. DlDRBs contain six kinds of motifs. The promoters ofDlDRBscontain a large number of light response elements,hormone response elements and stress response elements. DlDRBswere expressed in all stages of longan somatic embryogenesis and different organs. Under ABA,SA and MeJA treatments,the expression ofDlDRBsis clearly inhibited. This study indicated that members of the DlDRBs were highly conserved,they may be involved in the growth and development of somatic embryogenesis and organs in longan,and may be related to the response processes of ABA,SA and MeJA.

Key words: Dimocarpus longan, DRB gene family, genome-wide identification, promoter, bioinformatics, expression analysis

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