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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (3): 508-522.doi: 10.16420/j.issn.0513-353x.2021-1219

• Research Papers • Previous Articles     Next Articles

Screening and Identification of Interacting Protein of VaMYB4a from Vitis amurensis

YU Qinhan1, LI Junduo1, CUI Ying1, WANG Jiahui1, ZHENG Qiaoling1, XU Weirong1,2,3,4,*()   

  1. 1School of Agronomy,Ningxia University,Yinchuan 750021,China
    2School of Food & Wine,Ningxia University,Yinchuan 750021,China
    3Engineering Research Center of Grape and Wine,Ministry of Education,Yinchuan 750021,China
    4Key Laboratory of Modern Molecular Breeding of Dominant and Special Crops in Ningxia,Yinchuan 750021,China
  • Received:2022-08-18 Revised:2022-11-08 Online:2023-03-25 Published:2023-04-03
  • Contact: *(E-mail:xuwr@nxu.edu.cn

Abstract:

In this study,the yeast homogenized cDNA library was constructed by Gateway technology using the leaf tissue of cold-tolerant Vitis amurensis Rupr.‘Zuoshan-1’as the test material,and the library capacity was 1.36 × 107 cfu ∙ mL-1. Using VaMYB4a113-252 C-terminal regulatory region as bait,17 candidate interactive proteins were obtained by yeast two-hybrid screening. Two candidate proteins encoding zinc finger-like transcription factors,VaCOL4 and VaCOL5,closely related to abiotic stress response,were selected for interactive validation in yeast and Arabidopsis protoplasts,respectively. Bothcould interact with VaMYB4a and VaMYB4a1113-252,respectively. The phylogenetic and protein conserved domain analyses suggested a potential interaction between VaCOL2 and VaMYB4a,which was further verified by BiFC to confirm their interaction. cis-regulatory acting element prediction showed that the promoter regions of VvCOL2VvCOL4 and VvCOL5 contain multiple hormone and stress-response related elements,among which VvCOL2 included multiple low temperature response elements(LTRs). VaMYB4aVaCOL4 and VaCOL5 share the same expression pattern,but VaCOL2 is expressed differently under cold stress. Overall,VaMYB4a can interact with VaCOL2,VaCOL4,and VaCOL5 to form a protein complex to regulate the plant response to cold stress in a synergistic or antagonistic manner.

Key words: Vitis amurensis, cold stress, Gateway Y2H cDNA library, VaMYB4a, VaCOL, interactive analysis

CLC Number: