河南农业科学 ›› 2023, Vol. 52 ›› Issue (9): 133-140.DOI: 10.15933/j.cnki.1004-3268.2023.09.013

• 园艺 • 上一篇    下一篇

蜀葵ArbHLH148 基因克隆与表达分析

高文,闫庚洋,左俊凯,许乐,侯蕊利,景其昌,任昊   

  1. (河南科技大学园艺与植物保护学院,河南 洛阳 471000)
  • 收稿日期:2023-04-17 出版日期:2023-09-15 发布日期:2023-10-11
  • 作者简介:高文(1973-),男,内蒙古赤峰人,讲师,博士,主要从事园艺植物观赏品质研究。E-mail:tommoto@163.com
  • 基金资助:
    河南省高等学校重点科研项目(17A210009);河南科技大学2022年大学生研究训练计划(SRTP)(2022510)

Cloning and Expression Analysis of ArbHLH148 Gene in Alcea rosea L.

GAO Wen,YAN Gengyang,ZUO Junkai,XU Le,HOU Ruili,JING Qichang,REN Hao   

  1. (College of Horticulture and Plant Protection,Henan University of Science and Technology,Luoyang 471000,China)
  • Received:2023-04-17 Published:2023-09-15 Online:2023-10-11

摘要: 为解析蜀葵ArbHLH148基因在雄蕊瓣化中的功能,以红色重瓣蜀葵花朵为试材,结合转录组数据,采用逆转录PCR方法克隆了ArbHLH148基因,并对其序列特征和表达特性进行了分析。结果表明,ArbHLH148基因cDNA序列全长为672 bp,该基因与树棉bHLH148转录因子基因具有80%的一致性(E值为1e-119)。在系统进化上,ArbHLH148与拟南芥AtbHLH147、AtbHLH148、AtbHLH149、AtbHLH150关系很近,而且其具有典型的碱性螺旋-环-螺旋保守结构域(Basic helix‑loop‑helix,bHLH)。氨基酸序列预测显示,该蛋白质是位于细胞核内的亲水性蛋白,也是没有跨膜区的非分泌蛋白。组织特异性表达分析显示,ArbHLH148 及其功能相关基因ArIAA1、ArARF8、ArTIR1 在萼片、花瓣、雄蕊和瓣化雄蕊中均有表达,但其在雄蕊中的表达量相对较多,在花瓣、瓣化雄蕊中的表达量依次减少,这与生长素信号相关基因ArIAA1、ArARF8、ArTIR1在雄蕊、花瓣、瓣化雄蕊中的表达模式及生长素含量变化相似。表明ArbHLH148基因和生长素信号相关基因的表达差异可能是产生雄蕊瓣化的原因。

关键词: 蜀葵, ArbHLH148, 基因克隆, 序列分析, 表达分析, 雄蕊瓣化

Abstract: In order to analyze the function of ArbHLH148 gene in stamen petalization,ArbHLH148 gene was cloned by RT‑PCR from red double‑petaled hollyhock flowers combined with transcriptome data,and its sequence characteristics and expression characteristics were analyzed.The results showed that the full length of cDNA sequence of ArbHLH148 was 672 bp,which was 80% consistent with the bHLH148 transcription factor gene of Gossypium arboretum(E value=1e-119). The ArbHLH148 had the closest evolutionary relationship with AtbHLH147,AtbHLH148,AtbHLH149 and AtbHLH150 by phylogenetic analysis,and also had a typical basic helix‑loop‑helix(bHLH)conservative domain. The ArbHLH148 protein sequence prediction showed that the protein was a hydrophilic protein located within the nucleus and a non‑secreted protein without a transmembrane domain. Tissue‑specific expression analysis showed that ArbHLH148 and its functionally related genes ArIAA1,ArARF8 and ArTIR1 were expressed in sepals,petals,stamens and petaloid stamens,but its expression was higher relatively in stamens,and decreased sequentially in petals and petaloid stamens,which was similar to the expression pattern of auxin signal‑related genes ArIAA1,ArARF8 and ArTIR1 and auxin content changes in stamens,petals and petaloid stamens.These results suggest that differential expression of ArbHLH148 gene and auxin signal‑related genes may be responsible for stamen petalization.

Key words: Alcea rosea L., ArbHLH148, Gene cloning, Sequence identification, Expression analysis, Stamen petalization

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