浙江农业学报 ›› 2024, Vol. 36 ›› Issue (6): 1290-1299.DOI: 10.3969/j.issn.1004-1524.20230896

• 园艺科学 • 上一篇    下一篇

金银花光形态建成因子LjCOP1基因克隆及表达模式分析

宛燕1,2(), 周晓春3, 房海灵1,2,*(), 林沂1, 亓希武2, 于盱2, 陈泽群2, 梁呈元2,*()   

  1. 1.南京中医药大学,江苏 南京 210023
    2.江苏省中国科学院植物研究所,江苏 南京 210014
    3.盐城市大丰区林场,江苏 盐城 224100
  • 收稿日期:2023-07-19 出版日期:2024-06-25 发布日期:2024-07-02
  • 作者简介:宛燕(1998—),女,安徽巢湖人,硕士研究生,主要从事药用植物资源研究。E-mail: wany998061@163.com
  • 通讯作者: *房海灵,E-mail: fanghailing2013@163.com;梁呈元,E-mail: chenling8410@126.com
  • 基金资助:
    国家自然科学基金(32000262);江苏省林业科技创新与推广项目(LYKJ〔2021〕20);常州市科技支撑计划项目(CE20202006)

Cloning of light regulator LjCOP1 in Lonicera japonica and its expression characteristics

WAN Yan1,2(), ZHOU Xiaochun3, FANG Hailing1,2,*(), LIN Yi1, QI Xiwu2, YU Xu2, CHEN Zequn2, LIANG Chengyuan2,*()   

  1. 1. Nanjing University of Chinese Medicine, Nanjing 210023, China
    2. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
    3. Yancheng Dafeng District Forest Farm, Yancheng 224100, Jiangsu, China
  • Received:2023-07-19 Online:2024-06-25 Published:2024-07-02

摘要:

光是影响植物生长发育及次生代谢合成的最重要的环境因子之一,COP1 E3连接酶是光信号转导的分子开关。该研究基于金银花转录组数据库,从金银花(Lonicera japonica Thunb.)中克隆得到LjCOP1基因,并对其进行生物信息学及表达模式分析。结果表明,该基因包含13个外显子,编码区(CDS)长度为2 034 bp,编码677个氨基酸残基。多序列比对显示,LjCOP1与其他植物COP1序列具有较高保守性,均包含环形锌指结合域、卷曲螺旋形和WD40重复序列等特殊结构域。基于SWISS-MODEL对金银花LjCOP1基因进行的蛋白结构预测显示其与拟南芥AtCOP1在蛋白质三级结构层面高度保守。启动子顺式作用元件分析表明,LjCOP1启动子序列中含有大量激素响应元件、光响应元件和胁迫响应元件。系统发生分析表明,LjCOP1与莴笋LsCOP1基因亲缘关系较近。表达模式分析显示,LjCOP1在金银花不同部位及花发育时期均有表达,且在叶中高量表达。与黑暗条件相比,白光下LjCOP1基因表达丰度最高,且对黑暗转蓝光响应更强烈。

关键词: 金银花, LjCOP1基因, 表达模式

Abstract:

Light is one of the most important environmental factors to regulate growth, development and metabolism of plants, and COP1 (Constitutively photomorphogenic1) is a molecular switch for light signal transduction. In this study, LjCOP1 gene was cloned from honeysuckle (Lonicera japonica Thunb.) based on the honeysuckle transcriptome database, and analyzed for its bioinformatics and expression pattern. The results showed that LjCOP1 contains 13 exons and 12 introns, with a coding sequence (CDS) length of 2 034 bp encoding 677 amino acid residues. Multiple sequence comparison showed that LjCOP1 is highly conserved with other plant COP1 sequences, and all of them contain special structural domains such as ring zinc finger binding domain, coiled-coil domain and WD40 repeats. Protein structure prediction based on SWISS-MODEL showed that LjCOP1 was highly conserved with AtCOP1 of Arabidopsis thaliana at the level of protein tertiary structure. The analysis of promoter cis-acting progenitor showed that pLjCOP1 contained a large number of hormone-responsive, light-responsive, and stress-responsive elements. Phylogenetic analysis showed that LjCOP1 and LsCOP1 in lettuce genes were closely related. Furthermore, expression pattern analysis showed that LjCOP1 was expressed in different parts of honeysuckle and during the period of flower development, and was highly expressed in leaves. Compared with the dark condition, the highest gene abundance of LjCOP1 was found in white light, and responded more strongly to dark-to-blue light.

Key words: Lonicera japonica, LjCOP1 gene, expression characteristic

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