Biotechnology Bulletin ›› 2025, Vol. 41 ›› Issue (1): 210-220.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0507

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Identification and Expression Analysis of GRAS Transcription Factor Family in Rosa persica

KONG Qing-yang(), ZHANG Xiao-long, LI Na, ZHANG Chen-jie, ZHANG Xue-yun, YU Chao, ZHANG Qi-xiang, LUO Le()   

  1. School of Landscape Architecture, Beijing Forestry University, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, Engineering Research Center of Landscape Environment of Ministry of Education, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center for Floriculture, Beijing 100083
  • Received:2024-05-29 Online:2025-01-26 Published:2025-01-22
  • Contact: LUO Le E-mail:kongqingyangd@163.com;luolebjfu@163.com

Abstract:

【Objective】Identification and functional analysis of members of the GRAS gene family in Rosa persica, laying a theoretical foundation for functional research and breeding applications of the GRAS gene family in Rosa persica. 【Method】Using the genome of Rosa persica as the research object, the member identification, structural analysis, evolutionary analysis, cis-acting element analysis, prediction of secondary and tertiary structures of GRAS protein were carried out on the GRAS gene family of Rosa persica. Combined with transcriptome analysis, gene expression analysis was conducted in tissue locations, different levels of drought and low temperature stress environments.【Result】The 42 members of the GRAS gene family were identified, distributed on 7 different chromosomes. The 42 RbGRAS genes were divided into 9 subfamilies. Gene structure analysis showed that the RbGRAS gene had a conserved N-terminus, while the C-terminus had more structural variation. The collinearity analysis of gene family members showed 4 pairs of segment repeat genes and 4 pairs of tandem repeat genes. Analysis of cis-acting elements revealed that the GRAS gene family of R. persica contained abundant hormone responsive elements and stress responsive elements. The secondary prediction structure of RbGRAS protein was mainly alpha helix and irregular curl, while the tertiary prediction results showed similar protein composition. The results of tissue-specific expression analysis showed that the GRAS gene was mainly expressed in the root and stem tissues, with lower expression levels in flowers. The RbGRAS gene also showed gene specific expression under drought and low temperature stress.【Conclusion】The 42 members of the RbGRAS family are identified, all contain stress-related elements. RbGRAS27 and RbGRAS41 respond positively to drought and low temperature stress, respectively.

Key words: Rosa persica, GRAS gene family, bioinformatics analysis, expression analysis, drought stress, low temperature stress