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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (11): 2376-2386.doi: 10.16420/j.issn.0513-353x.2022-0854

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Response to Low Temperature Stress and Screening and Validation of Interaction Protein of CqCHP1 in Chieh-qua

WANG Min, YANG Songguang, LIU Wei, HE Xiaoming, SHI Shaoqi, LIU Wenrui, CHEN Lin, JIANG Biao, PENG Qingwu*()   

  1. Guangdong Key Laboratory for New Technology Research of Vegetables,Vegetable Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China
  • Received:2023-03-21 Revised:2023-09-18 Online:2023-11-25 Published:2023-11-28
  • Contact: PENG Qingwu

Abstract:

In this study,CqCHP1 was cloned from‘Yueguang Chieh-qua’,which encoded cysteine/ histidine-rich C1 domain protein. The gene’s open reading frame was 816 bp with 271 amino acids. The secondary structure indicated that CqCHP1 contained main random curl and 23 serine phosphorylation sites. Phylogenetic tree and amino acid sequence alignment analysis showed that CqCHP1 had the highest homology with cucumber Csa_4G297435. CqCHP1 was expressed in different tissues and specifically induced by low temperature. And at seedling and fruiting stages,CqCHP1 showed higher expression in resistance materials than sensitive materials,while at vegetative growth and flowering periods,it’s the opposite. The protein was located in the nucleus. Analysis of interaction proteins obtained by yeast screening showed that CqCHP1 could interact with bHLH92 in nucleus. And the inteaction was verified by Bimolecular fluorescence complementation(BIFC)and Luciferase complementation imaging assay(LCI).

Key words: chieh-qua, low temperature, CHP1 protein, protein-interation, bHLH92 transcription factor