不同桂花品种中SQUAMOSA启动子结合蛋白的鉴定与比较  

Identification and comparison of SQUAMOSA promoter-binding protein in different Osmanthus fragrans Lour.varieties

作　　者：赵恒 夏贺笑 杨雅琳 李永 Zhao Heng;Xia Hexiao;Yang Yalin;Li Yong(College of Landscape Architecture and Art,Henan Agricultural University,Zhengzhou 450002,China;College of Life Science and Technology,Inner Mongolia Normal University,Huhhot 010022,China)

机构地区：[1]河南农业大学风景园林与艺术学院,郑州450002 [2]内蒙古师范大学生命科学与技术学院,呼和浩特010022

出　　处：《植物科学学报》2024年第6期774-781,共8页Plant Science Journal

基　　金：国家自然科学基金项目(32360307)。

摘　　要：作为植物特异性转录因子家族,SQUAMOSA启动子结合蛋白(SBP/SPL)参与多种生物过程。本研究基于基因组数据鉴定了桂花(Osmanthus fragrans Lour.)4个品种的SBP基因家族成员,并对其进行生物信息学分析与功能预测。结果显示,4个品种共鉴定出172个SBP基因,各品种的基因成员数量不同,其染色体分布也有差异,根据系统发育树,可将其分为9个亚族,不同亚族在各品种中的分布不同。相同亚族的家族成员具有相似的基因模块和结构,均具有SBP基因特有的保守结构域。SBP基因启动子包含的顺式作用元件与植物激素、生长发育、防御与胁迫相关。基因组织表达情况分析表明,大部分SBP基因在茎、叶和花中都有表达。The SQUAMOSA promoter-binding protein(SBP/SPL)family represents a group of plant-specific transcription factors involved in diverse biological processes.In this study,genomic data were used to identify and analyze SBP gene family members across four varieties of Osmanthus fragrans Lour.A total of 172 SBP genes were identified,with each variety exhibiting distinct numbers of genes and unique chromosomal distributions.Phylogenetic analysis classified these genes into nine subfamilies,with variations in the subfamily distribution across the four varieties.Members within the same subfamily shared similar gene modules and structures,all containing the conserved domains characteristic of SBP genes.Promoter analysis revealed that the cis-acting elements of SBP genes were associated with plant hormones,growth and development,defense,and stress.Tissue-specific analysis demonstrated that most SBP genes were expressed in the stems,leaves,and flowers,suggesting functional involvement in these tissues.

关 键 词：桂花 SBP基因家族 基因组 生物信息学 

分 类 号：Q943.2[生物学—植物学]