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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (4): 737-753.doi: 10.16420/j.issn.0513-353x.2022-0044

• Research Papers • Previous Articles     Next Articles

Preliminary Investigation of C2H2 Family Genes in Blueberry Flower Bud Dormancy Release

LI Ke1, SHEN Mengxiao1, PAN Weihao1, ZHANG Shixuan1, MAO Xinye1, YIN Yahong1, LI Yongqiang1,2,*(), ZHU Youyin3,*(), GUO Weidong1,2   

  1. 1. College of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua,Zhejiang 321000,China
    2. Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants,Jinhua,Zhejiang 321000,China
    3. Jinhua Polytechnic,Jinhua,Zhejiang 321000,China
  • Received:2022-10-08 Revised:2023-01-21 Online:2023-04-25 Published:2023-04-27
  • Contact: *(E-mail:lyq@zjnu.cnzhuyouyin@jhc.edu.cn) E-mail:lyq@zjnu.cn;zhuyouyin@jhc.edu.cn

Abstract:

In order to explore the function of C2H2 zinc finger protein in blueberry flower bud dormancy,members of VcC2H2-ZFP gene family were identified in blueberry by bioinformatics analysis. The expression pattern of C2H2 genes during the process of flower bud endodormancy release and treatment of exogenous abscisic acid(ABA)were analyzed through transcriptome data and Quantitative Real-time PCR(qRT-PCR). In this study,79 VcC2H2-ZFP family members were identified in blueberry. According to the results of phylogenetic tree and conservative motif analysis,VcC2H2-ZFP family members were divided into three groups. The results of gene expression showed that VcC2H2-ZFP genes family were expressed in all organs of blueberry,among which 15 VcC2H2-ZFP genes were significantly differentially expressed during flower bud endodormancy release;the expression levels of Vc31g303.5Vc7g51.6,and Vc16g355.5 were high at deep endodormancy stage,but decreased with the process of dormancy release. Cis-acting element analysis showed that the promoter of VcC2H2-ZFP genes contained a large number of hormone response elements such as photoreaction,stress defense,ABA,and gibberellin. The results of qRT-PCR showed that exogenous ABA treatment of blueberry flower buds can significantly promote the expression of VcC2H2-ZFP genes such as Vc16g355.5Vc7g51.6,and Vc31g303.5. The results revealed that part of VcC2H2-ZFP might participate in the regulation of blueberry flower bud dormancy by responding to ABA.

Key words: blueberry, flower bud, dormancy, C2H2 family gene, abscisic acid

CLC Number: