生物技术通报 ›› 2025, Vol. 41 ›› Issue (1): 210-220.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0507

• 研究报告 • 上一篇    下一篇

单叶蔷薇GRAS转录因子家族鉴定及表达分析

孔青洋(), 张晓龙, 李娜, 张晨洁, 张雪云, 于超, 张启翔, 罗乐()   

  1. 北京林业大学园林学院 城乡生态环境北京实验室 花卉种质创新与分子育种北京市重点实验室 教育部园林环境工程研究中心 林木花卉遗传育种教育部重点实验室 林木资源高效生产全国重点实验室 国家花卉工程技术研究中心,北京 100083
  • 收稿日期:2024-05-29 出版日期:2025-01-26 发布日期:2025-01-22
  • 通讯作者: 罗乐,男,博士,教授,研究方向:园林植物遗传育种;E-mail: luolebjfu@163.com
  • 作者简介:孔青洋,男,硕士,研究方向:园林植物遗传育种;E-mail: kongqingyangd@163.com
  • 基金资助:
    国家重点研发计划(2023YFD1200105);国家重点研发计划(2019YFD1001001);中央高校基本科研业务费专项资金(QNTD202306);国家自然科学基金项目(32071820)

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 Published:2025-01-26 Online:2025-01-22

摘要:

【目的】对单叶蔷薇(Rosa persicaGRAS基因家族成员进行鉴定及功能分析,为单叶蔷薇GRAS基因家族功能研究及育种应用奠定理论基础。【方法】以单叶蔷薇基因组为研究对象,对单叶蔷薇GRAS基因家族进行成员鉴定、结构分析、进化分析、顺式作用元件分析、GRAS蛋白二级结构、三级结构预测,结合转录组对组织部位、不同水平干旱和低温胁迫环境中基因表达进行分析。【结果】鉴定出42个GRAS基因家族成员,分布在 7条不同的染色体上;42个RbGRAS基因可分为9个亚族;基因结构分析表明RbGRAS基因具有保守的N端,而C端在结构上较多变;对基因家族成员共线性分析显示,有4对片段重复基因和4对串联重复基因;顺式作用元件分析发现,单叶蔷薇GRAS基因家族中含有丰富的激素应答元件和胁迫响应元件;RbGRAS蛋白二级预测结构以α-螺旋以及无规则卷曲为主,三级预测结果显示蛋白组成相似;组织特异性表达分析结果显示GRAS基因主要在根系和茎组织中表达,在花中表达量较低;RbGRAS基因在干旱和低温胁迫中也存在基因特异性表达。【结论】鉴定得到42个RbGRAS家族成员,均含有逆境相关作用元件,RbGRAS27RbGRAS41分别对干旱和低温胁迫积极响应。

关键词: 单叶蔷薇, GRAS基因家族, 生物信息学分析, 表达分析, 干旱胁迫, 低温胁迫

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