https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (9): 1768-1784.doi: 10.16420/j.issn.0513-353x.2019-0986

• Research Papers • Previous Articles     Next Articles

Genome-wide Identification and Expression Analysis of WRKY Gene Family in Dianthus caryophyllus

LIN Shengnan, LIU Jiewei, ZHANG Xiaoni, BAO Manzhu, FU Xiaopeng*()   

  1. College of Horticulture and Forestry Science,Huazhong Agricultural University,Wuhan 430070,China
  • Received:2021-04-09 Revised:2021-05-26 Online:2021-09-25 Published:2021-09-30
  • Contact: FU Xiaopeng E-mail:fuxiaopeng@mail.hzau.edu.cn

Abstract:

The WRKY genes of carnation(DcaWRKY)were identified from Dianthus caryophyllus genomic database based on the WRKY protein sequences of Arabidopsis thaliana and the conserved domain sequence of WRKY proteins(PF03106). In total,53 DcaWRKY members were identified in the carnation genome,with the amino acid size,molecular weight of protein(average),isoelectric point and the gene intron numbers varying from 161-747 aa,18.27-82.58 kD,5.10-10.52 and 1-5 respectively. According to phylogenetic analysis,DcaWRKYs can be divided into three groups and groupⅡcan be further divided into five subgroups. DcaWRKY conserved domain analysis revealed three mutations in the WRKY domain,the WRKYGQK heptapeptide domain in N terminal of DcaWRKY20 were lack of ‘YGQK’and formatted the missing variant WRK,and the K in the heptapeptide domain of WRKYGQK at the C terminal of DcaWRKY39 is mutated to N,forming the heptapeptide domain of WRNYGQK and DcaWRKY48 is the WRKYGKK heptapeptide domain. In addition,Conserved motifs analysis showed that there were at least 10 motifs in DcaWRKY members and they have similar conserved motifs when they are in a closer phylogenetic relationship. Cis-acting element analysis in the promoter region showed that DcaWRKYs contained a large number of functional domains related to light signal,plant hormone,stress and meristem. Based on the transcriptomic data analysis,there were 20 DcaWRKY gene family members up-regulated or down-regulated during adventitious root formation,and we speculated that these genes may play an important role in the formation of adventitious roots in carnations cuttings. And the qRT-PCR analysis revealed that the mRNA expression patterns of DcaWRKY11,DcaWRKY13,DcaWRKY15,DcaWRKY22,DcaWRKY23,DcaWRKY31 and DcaWRKY39 showed a fairly good match to the RNA-seq analysis and showed diversity in the growth process of adventitious roots. In addition,there was no significant difference in the expression of DcaWRKYs between auxin group and control group,indicating that the DcaWRKYs is not sensitive to auxin.

Key words: Dianthus caryophyllus, WRKY, gene, adventitious root formation, expression

CLC Number: