生物技术通报 ›› 2024, Vol. 40 ›› Issue (12): 84-92.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0420

• 研究报告 • 上一篇    下一篇

菠菜高迁移率族基因家族鉴定及表达分析

邹婷婷(), 杨莉, 曲茜彤, 陈子航, 潘曦, 邵鸿旭, 王小丽()   

  1. 上海师范大学生命科学学院 植物种质资源开发协同创新中心,上海 200234
  • 收稿日期:2024-05-06 出版日期:2024-12-26 发布日期:2025-01-15
  • 通讯作者: 王小丽,女,博士,副教授,研究方向:蔬菜栽培与品质调控;E-mail: wangxl@shnu.edu.cn
  • 作者简介:邹婷婷,女,硕士研究生,研究方向:蔬菜栽培与品质调控;E-mail: 2974567001@qq.com
  • 基金资助:
    上海市科技兴农项目(沪农科推字(2022)第1-8号)

Identification and Expression Analysis of High Mobility Gene Families in Spinach

ZOU Ting-ting(), YANG Li, QU Xi-tong, CHEN Zi-hang, PAN Xi, SHAO Hong-xu, WANG Xiao-li()   

  1. Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai 200234
  • Received:2024-05-06 Published:2024-12-26 Online:2025-01-15

摘要:

【目的】高迁移率族蛋白(high mobility group, HMG)参与DNA结构/染色质的调节,在基因转录调控中起重要作用。鉴定菠菜(Spinacia oleracea L.)HMG基因家族,为菠菜HMG蛋白生物学功能研究提供理论依据。【方法】从全基因组水平对菠菜SoHMG家族成员进行鉴定,并对家族成员进行理化性质、基因结构、保守基序、启动子元件及水杨酸响应表达谱等分析。【结果】菠菜基因组含有16个SoHMG基因家族成员,编码区长度为240-4 029 bp,编码氨基酸79-1 342,分散在6条染色体上。进化树分析将SoHMG划分为2个亚家族,包括3个A亚族和13个B亚族成员,同一亚家族成员具有类似的保守结构域。在B亚家族启动子中发现了水杨酸等激素响应元件。SoHMG基因在菠菜根、茎、叶中均有表达,其中4个基因在叶中表达量较高。绝大多数SoHMG基因表达量在水杨酸处理下表达上调,其中,SoHMGB1(SOV1g000250.1)、SoHMGB7(SOV5g026260.1)、SoHMGB2(SOV1g027200.1)上调幅度最为显著,上调倍数10倍以上。【结论】菠菜HMG基因家族注释得到16个成员,分为2个亚族,其中3个基因(SoHMGB1SoHMGB7SoHMGB2)在水杨酸处理下显著上调,可能在水杨酸信号响应中发挥重要作用。

关键词: 菠菜, HMG, 鉴定, 水杨酸, 基因表达

Abstract:

【Objective】High mobility group(HMG)proteins participate in the regulation of DNA structure and chromatin, which play an important role in gene transcription regulation. Identifying the family of HMG genes in spinach(Spinacia oleracea L.)may provide a theoretical basis for studying the biological functions of spinach HMG proteins.【Method】The members of the spinach SoHMG family were identified at the whole genome level, and their physicochemical properties, gene structure, conserved motifs, promoter elements, and salicylic acid-responsive expression profiles were analyzed. 【Result】The spinach genome contained 16 members of the SoHMG gene family, with a coding region length of 240-4 029 bp and a coding amino acid number between 79-1 342. The 16 SoHMG genes were scattered across six chromosomes. By evolutionary tree analysis, SoHMG members were divided into two subfamilies, including three members in A subfamily and 13 in B subfamily. The members of the same subfamily have similar conserved domains. Some hormone-responsive elements, such as salicylic acid(SA), were found in the promoter of the SoHMGB subfamily. The SoHMG genes were expressed in the roots, stems, and leaves of spinach. Most of genes had higher expressions in the leaves. SA treatment induced the expressions of most of the SoHMG genes. Among them, the expressions of SoHMGB1(SOV1g000250.1), SoHMGB7(SOV5g026260.1), and SoHMGB2(SOV1g027200.1)were more than 10 times higher than those in control. 【Conclusion】There are 16 members of HMG gene family in spinach genome, which is divided into 2 subfamilies. Three genes((SoHMGB1, SoHMGB7, and SoHMGB2))are significantly upregulated under SA treatment, which may play an important role in the SA signal response.

Key words: spinach, HMG, identification, salicylic acid, gene expression