华北农学报 ›› 2025, Vol. 40 ›› Issue (1): 104-112. doi: 10.7668/hbnxb.20195335

所属专题: 生物技术

• 作物遗传育种·种质资源·生物技术 • 上一篇    下一篇

广藿香Trihelix家族PatASIL2基因克隆、亚细胞定位及表达分析

李俊仁1, 陈秀珍2, , 吴带娣3   

  1. 1 广州医科大学 附属肿瘤医院,广东 广州 510095
    2 仲恺农业工程学院 农业与生物学院,广东 广州 510225
    3 广州中医药大学 中药学院,广东 广州 510006
  • 收稿日期:2024-09-05 出版日期:2025-02-28
  • 通讯作者:
    陈秀珍(1989—),女,广东东莞人,讲师,博士,主要从事中药资源与药效成分遗传调控研究。
  • 作者简介:

    李俊仁(1989—),男,广东东莞人,主管中药师,博士,主要从事中药资源与分子生药学研究。

  • 基金资助:
    广东省基础与应用基础研究基金项目(2022A1515110525); 广东省基础与应用基础研究基金项目(2021A1515110147); 广州市卫生健康科技项目(20232A011015); 广州市科技计划项目(2023A04J0600)

Cloning,Subcellular Localization,and Expression Analysis of PatASIL2 Gene of Trihelix Family from Pogostemon cablin

LI Junren1, CHEN Xiuzhen2, , WU Daidi3   

  1. 1 Affiliated Cancer Hospital and Institute,Guangzhou Medical University,Guangzhou 510095,China
    2 College of Agriculture and Biology,Zhongkai University of Agriculture and Engineering, Guangzhou 510225,China
    3 School of Chinese Materia Medica,Guangzhou University of Chinese Medicine,Guangzhou 510006,China
  • Received:2024-09-05 Published:2025-02-28

摘要:

为探究广藿香Trihelix家族基因PatASIL2的序列特征、亚细胞定位及表达模式,以广藿香转录组获得的ASIL2基因序列设计特异性引物,以广藿香cDNA为模板,克隆PatASIL2基因,随后对其进行生物信息学分析;构建PatASIL2-EGFP融合蛋白表达载体并转化拟南芥原生质体,检测PatASIL2的亚细胞定位;利用实时荧光定量PCR(qRT-PCR)分析PatASIL2基因在广藿香不同组织、外源茉莉酸甲酯(MeJA)喷施及非生物胁迫(盐胁迫、干旱胁迫、冷胁迫)下的表达情况。结果显示,PatASIL2含长度为1 035 bp的开放阅读框,编码344个氨基酸。PatASIL2不具有跨膜结构和信号肽,属于不稳定的亲水蛋白,含有41个丝氨酸磷酸化位点和1个Myb_DNA-bind_4保守结构域。系统进化分析显示,PatASIL2归类到Trihelix转录因子家族的SIP1亚家族,与芝麻SiASIL2同源性较高。亚细胞定位结果表明,PatASIL2为细胞核定位蛋白。qRT-PCR结果表明,PatASIL2在广藿香的嫩叶、成熟叶、老叶、根和茎中都有表达,尤其在老叶中的表达量最高;在MeJA处理后,PatASIL2基因的表达量在12~24 h显著升高;盐胁迫下,PatASIL2基因的表达量在3~24 h显著升高;在干旱胁迫下,PatASIL2基因的表达量在24 h显著升高;在冷胁迫下,PatASIL2基因在12 h表达量显著升高。

关键词: 广藿香, Trihelix, ASIL2, 基因克隆, 表达模式, 亚细胞定位

Abstract:

To reveal the sequence characteristics,subcellular localization,and expression pattern of PatASIL2,belonging to the Trihelix transcription factor family,the PatASIL2 gene was first cloned using the cDNA of Pogostemon cablin (patchouli)as a template,and the bioinformatics analysis was further performed.The PatASIL2-EGFP expressed vector was constructed and transformed into Arabidopsis protoplasm to investigate the subcellular localization of PatASIL2.The real-time quantitative reverse transcription PCR(qRT-PCR)was also performed to detect the expression profiles of PatASIL2 gene in different tissues of patchouli and under treatments of methyl jasmonate(MeJA),salt stress,drought stress,and cold stress.The results indicated that PatASIL2 gene contained an open reading frame of 1 035 bp and encoded 344 amino acids.The PatASIL2 protein was an unstable hydrophilic protein without transmembrane domains and signal peptides and had 41 serine phosphorylation sites and one Myb_DNA-bind_4 conserved domain.The phylogenetic analysis showed that PatASIL2 was classified into the SIP1 subfamily of Trihelix transcription factor family,and clustered closely with Sesamum indicum SiASIL2.The subcellular localization result indicated that PatASIL2 was a nuclear-localized protein.The qRT-PCR results indicated that PatASIL2 expressed in the young leaf,mature leaf,old leaf,stem,and root in patchouli,particularly with the highest expression in the old leaf.The PatASIL2 expression was significantly upregulated by MeJA at 12—24 h and salt stress at 3—24 h.The expression of PatASIL2 was significantly upregulated at 24 h after drought treatment,and at 12 h after cold treatment.

Key words: Pogostemon cablin, Trihelix, ASIL2, Gene cloning, Expression pattern, Subcellular localization

引用本文

李俊仁, 陈秀珍, 吴带娣. 广藿香Trihelix家族PatASIL2基因克隆、亚细胞定位及表达分析[J]. 华北农学报, 2025, 40(1): 104-112. doi: 10.7668/hbnxb.20195335.

LI Junren, CHEN Xiuzhen, WU Daidi. Cloning,Subcellular Localization,and Expression Analysis of PatASIL2 Gene of Trihelix Family from Pogostemon cablin[J]. Acta Agriculturae Boreali-Sinica, 2025, 40(1): 104-112. doi: 10.7668/hbnxb.20195335.