Acta Agriculturae Boreali-Sinica ›› 2025, Vol. 40 ›› Issue (3): 34-43. doi: 10.7668/hbnxb.20195549

Special Issue: Tomato Biotechnology Vegetables

• Crop Genetics & Breeding·Germplasm Resources. Biotechnology • Previous Articles     Next Articles

Construction of Yeast Library of Tomato Nucleus System and Screening of ToCV CP-interacting Proteins

WANG Lina1,2, GAO Kang2, KANG Chen2, TIAN Zhejuan2, LI Yadong2, WANG Peng2, LI Zhaowei1, , WU Zhiming2,   

  1. 1 College of Food Science and Biology,Hebei University of Science and Technology,Shijiazhuang 050018,China
    2 Institute of Cash Crops,Hebei Academy of Agriclture and Forestry Sciences,Shijiazhuang 050051,China
  • Received:2024-11-01 Published:2025-06-28

Abstract:

This study aims to identify potential proteins that interact with the coat protein(CP)of Tomato chlorosis virus (ToCV)from a cDNA library,to explore the infection mechanism of ToCV and the role of CP in the infection process.The research highlights the significant impact of Tomato chlorosis virus disease on tomato yield and quality during summer and late-autumn production.The Moneymaker tomato variety infected with ToCV was used as the experimental material.Using Gateway technology,a nuclear yeast cDNA library was constructed from ToCV-infected tomatoes,and a yeast two-hybrid bait vector,pGBKT7-CP(CP-BD),was developed.CP was employed as the bait protein to screen the nuclear yeast cDNA library,identifying hundreds of potential interacting proteins involved in various physiological processes.Further verification was performed using one-on-one yeast two-hybrid assays and NCBI BLAST analysis to confirm the proteins interacting with ToCV CP.The constructed nuclear yeast cDNA library had a primary capacity of 1.60×107,with a 100% recombination rate and an average insert size exceeding 1 000 bp.The secondary library also achieved a capacity of 1.60×107,with a 100% recombination rate and an average insert size greater than 1 000 bp,meeting the quality standards for subsequent yeast hybridization experiments.Proteins interacting with ToCV CP,identified through library screening,were categorized into cellular processes,biological regulation,and intracellular material transport.Notably,many of these proteins were associated with processes such as viral replication and transport,host cell infection,and the regulation of host cell metabolism and the cell cycle.Additionally,the identified proteins included those with functions such as protein binding,nucleic acid binding,and hydrolase activity.Among these,ribonucleases were the most abundant,playing a critical role in the viral infection process.Ultimately,30 proteins,including HSPs,DnaJ,and TCPs,were confirmed to interact with ToCV CP.These findings provide a strong foundation for further research into the infection mechanism of ToCV and the functional role of CP in the infection process.

Key words: Tomato chlorosis virus, Coat protein, Gateway technology, Yeast two-hybrid, Nuclear system

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Cite this article

WANG Lina, GAO Kang, KANG Chen, TIAN Zhejuan, LI Yadong, WANG Peng, LI Zhaowei, WU Zhiming. Construction of Yeast Library of Tomato Nucleus System and Screening of ToCV CP-interacting Proteins[J]. Acta Agriculturae Boreali-Sinica, 2025, 40(3): 34-43. doi: 10.7668/hbnxb.20195549.

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