华北农学报 ›› 2024, Vol. 39 ›› Issue (3): 67-76. doi: 10.7668/hbnxb.20194389

所属专题: 生物技术 热点论文

• 作物遗传育种·种质资源·生物技术 • 上一篇    下一篇

蓖麻RcNAC100-like基因克隆及表达特性分析

李艳肖1, 王丽娜2, 朱贵爽1, 刘鹏1, 向殿军1   

  1. 1 内蒙古民族大学 农学院,内蒙古 通辽 028000
    2 黑龙江省农业科学院 大庆分院,黑龙江 大庆 163319
  • 收稿日期:2023-12-22 出版日期:2024-06-28
  • 通讯作者:
    刘 鹏(1973—),男,内蒙古赤峰人,教授,博士,主要从事作物遗传育种研究。
    向殿军(1978—),男,黑龙江望奎人,教授,博士,主要从事作物分子育种研究。
  • 作者简介:

    李艳肖(1998—),男,内蒙古通辽人,在读硕士,主要从事作物抗逆境基因挖掘及功能研究。

  • 基金资助:
    国家自然科学基金项目(32060492); 内蒙古自治区自然科学基金项目(2022MS03057); 内蒙古自治区自然科学基金项目(2023MS03032)

Cloning and Expression Characteristics Analysis of RcNAC100-like Gene in Castor

LI Yanxiao1, WANG Lina2, ZHU Guishuang1, LIU Peng1, XIANG Dianjun1   

  1. 1 College of Agriculture,Inner Mongolia Minzu University,Tongliao 028000,China
    2 Daqing Branches of Heilongjiang Academy of Agricultural Sciences,Daqing 163319,China
  • Received:2023-12-22 Published:2024-06-28

摘要:

NAC(NAM,ATAF1/2,CUC2)基因是胁迫信号转导网络中重要的调节因子,克隆蓖麻NAC基因,研究其分子特征及表达特性,旨在为研究蓖麻NAC基因的潜在功能提供数据支持。采取RT-PCR技术克隆通篦5号的RcNAC100-like基因并分析其分子特征,包括生物信息学、亚细胞定位、表达模式和转录激活域分析。结果表明,RcNAC100-like基因的cDNA全长1 244 bp,包含1 086 bp的CDS,共推导361个氨基酸,该蛋白质的不规则卷曲和α-螺旋结构较多,是1个亲水的、非分泌性蛋白质;系统进化分析结果表明,RcNAC100-like蛋白质与木薯和橡胶树NAC蛋白质的亲缘关系最近,且motif组成及位置高度相似;RcNAC100-like蛋白的亚细胞定位结果与预测结果一致,定位在细胞核;RcNAC100-like启动子的顺式作用元件预测结果显示,该区域有多个环境响应类元件和生长发育类相关元件;基因表达模式分析结果表明,RcNAC100-like基因有组织表达特异性,在根中的相对表达量最高;另外,该基因能够对不利环境(干旱、盐、冷和ABA胁迫)迅速做出反应并积极地表达,说明RcNAC100-like基因可能是蓖麻对逆境响应的关键基因;转录激活试验结果表明,RcNAC100-like转录因子在酵母中具有转录激活活性。综上,RcNAC100-like基因可能在蓖麻的抗逆境过程中发挥重要作用。

关键词: 蓖麻, RcNAC100-like基因, 生物信息学, 克隆, 表达

Abstract:

The NAC(NAM,ATAF1/2,CUC2)gene is an important regulatory factor in the stress signal transduction network.Cloning the NAC gene in castor,studying its molecular characteristics and expression characteristics,aiming to provide data support for the potential function of the castor NAC gene.The RcNAC100-like gene of Tongbi No.5 was cloned by RT-PCR technology,and its molecular characteristics were analyzed,including bioinformatics,subcellular localization,expression patterns,and transcription activation domain analysis.The results showed that the full length of RcNAC100-like gene cDNA was 1 244 bp,including a 1 086 bp coding sequence(CDS),encoding 361 amino acids.The protein had more irregular coil and α-helix structures,and was a hydrophilic,non-secretory protein.Phylogenetic analysis showed that the RcNAC100-like protein was most closely related to NAC proteins in Manihot esculenta and Hevea brasiliensis,with highly similar motif composition and positioning.The subcellular localization of RcNAC100-like protein was consistent with the predicted results,located in the nucleus.The predicted cis-acting elements in the RcNAC100-like promoter region indicate the presence of multiple environmental response and growth-related elements.Expression pattern analysis showed that the RcNAC100-like gene had tissue-specific expression,with the highest relative expression level in the roots.Additionally,the gene could respond rapidly to adverse environments(drought,salt,cold,and ABA stress)and actively express,indicating that the RcNAC100-like gene might be a key gene in the castor's response to stress.Transcription activation assay results showed that the RcNAC100-like transcription factor has transcriptional activation activity in yeast.In summary,the RcNAC100-like gene may play an important role in the castor's resistance to adversity.

Key words: Castor, RcNAC100-like gene, Bioinformatics, Clone, Expression

引用本文

李艳肖, 王丽娜, 朱贵爽, 刘鹏, 向殿军. 蓖麻RcNAC100-like基因克隆及表达特性分析[J]. 华北农学报, 2024, 39(3): 67-76. doi: 10.7668/hbnxb.20194389.

LI Yanxiao, WANG Lina, ZHU Guishuang, LIU Peng, XIANG Dianjun. Cloning and Expression Characteristics Analysis of RcNAC100-like Gene in Castor[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(3): 67-76. doi: 10.7668/hbnxb.20194389.