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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (9): 2363-2376.doi: 10.16420/j.issn.0513-353x.2024-0993

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

Genome-Wide Identification of PoSnRK Gene Family in Paeonia ostii and Expression Analysis During Flower Senescence

WANG Xinru1, BAI Shuaishuai2, SUN Yule1, WU Xinyu1, ZENG Feng3, LIU Chunying1, ZHANG Yuxi1, GAI Shupeng1,**(), YUAN Yanchao1,**()   

  1. 1 College of Life ScienceQingdao Agricultural University,Qingdao, Shandong 266109, China
    2 Shandong Provincial Station of Rural Economic Management and ServiceShandong Provincial Department of Agriculture and Rural Affairs, Ji’nan 250100, China
    3 Agricultural and Rural Bureau of Qihe CountyDezhou, Shandong 251199, China
  • Received:2024-12-26 Revised:2025-03-03 Online:2025-09-25 Published:2025-09-24
  • Contact: GAI Shupeng, YUAN Yanchao

Abstract:

To investigate the members and characteristics of sucrose non-fermenting-1-related protein kinase(SnRK)gene family in Paeonia suffruticosa,bioinformatics methods were employed to identify the members,resulting in the identification of 22 PoSnRKs,including 3 SnRK1s,6 SnRK2s,and 13 SnRK3sCIPKs);conserved domain analysis revealed that all PoSnRK1 proteins possessed the Pkinase,UBA,and KA1 domains,PoSnRK2s possessed the Pkinase domain,and PoCIPKs possessed the Pkinase and NAF domains;conserved motif analysis identified Motif 15,Motif 17,and Motif 18 as characteristic motifs of the SnRK1 subfamily,Motif 16 and Motif 19 as characteristic motifs of the SnRK2 subfamily,and Motif 7,Motif 10,and Motif 14 as characteristic motifs of the CIPK subfamily. Collinearity analysis indicated that there was only one pair of collinear PoSnRKsPo04_CIPK10 and Po01_CIPK14cis-acting element analysis found that most PoSnRK promoters contained cis-elements responsive to hormones and transcription factor binding. Transcriptome expression profiles and qRT-PCR results showed that the expression level of Po02_SnRK2.8Po01_SnRK1.1Po01_CIPK6 and Po04_CIPK10 was consistent with the flower senescence,suggesting that these four genes played a role in the flower aging process of tree peony.

Key words: tree peony, sucrose non-fermenting-1-related protein kinase, gene family, flowers, senescence