华北农学报 ›› 2023, Vol. 38 ›› Issue (4): 1-10. doi: 10.7668/hbnxb.20193892

所属专题: 玉米 抗旱节水 生物技术 热点文章

• 作物遗传育种·种质资源·生物技术 • 上一篇    下一篇

玉米bZIP转录因子ZmbZIP26的分子特征、亚细胞定位及响应非生物胁迫的表达分析

曹丽茹1,2, 马晨晨1,2, 庞芸芸1, 叶飞宇1,2, 王振华1,2, 鲁晓民1,2   

  1. 1 河南省农业科学院 粮食作物研究所,河南 郑州 450002
    2 神农种业实验室,河南 郑州 450002
  • 收稿日期:2023-04-02 出版日期:2023-08-28
  • 通讯作者:
    鲁晓民(1980—),男,河南许昌人,研究员,博士,主要从事玉米新品种选育及示范推广。
  • 作者简介:

    曹丽茹(1988—),女,河南濮阳人,副研究员,博士,主要从事玉米逆境生理与分子生物学研究及种质创制和新品种选育。

  • 基金资助:
    中央引导地方科技发展资金(Z20221343040); 河南省农业科学院杰出青年科技基金(2022JQ02); 河南省青年人才托举工程项目(2022HYTP034); 国家自然科学基金青年基金(32201708)

Molecular Characteristics,Subcellular Localization and Expression Analysis of Maize bZIP Transcription Factor ZmbZIP26 in Response to Abiotic Stress

CAO Liru1,2, MA Chenchen1,2, PANG Yunyun1, YE Feiyu1,2, WANG Zhenhua1,2, LU Xiaomin1,2   

  1. 1 Grain Crop Research Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China
    2 The Shennong Laboratory,Zhengzhou 450002,China
  • Received:2023-04-02 Published:2023-08-28

摘要:

bZIP转录因子广泛存在于植物中,在调节植物生长发育和非生物胁迫应答中起着重要作用。为探究bZIP转录因子在玉米干旱胁迫响应中的功能,在玉米苗期干旱胁迫处理5 d和复水3 d时,利用转录组测序技术对转录因子基因的表达变化进行分析,筛选到一个响应干旱和复水处理的bZIP转录因子(ZmbZIP26),共表达网络分析发现,ZmbZIP26处于网络调节的核心节点位置。ZmbZIP26基因含有558 bp的开放阅读框,编码185个氨基酸,属于亲水性蛋白。蛋白质进化树及保守序列分析发现,ZmbZIP26蛋白与高粱和芒草同源蛋白的同源性较高,而且在同一氨基酸位置上的保守基序相同。启动子顺式作用元件分析表明,ATG上游2 000 bp区域内含有干旱响应元件、激素响应元件和光响应元件等。qRT-PCR分析发现,ZmbZIP26是组成型表达基因,在幼茎、雌穗和根中高表达,且ZmbZIP26基因积极响应干旱、高温、高盐、氮胁迫及恢复正常的过程,可能在植物的抗逆过程中发挥着重要作用。亚细胞定位分析发现,ZmbZIP26属于核蛋白,定位在细胞核上。蛋白质互作预测发现,ZmbZIP26可能与锌指蛋白、丝氨酸蛋白、钙依赖性蛋白、谷胱甘肽转移蛋白等互作构建了一张调控网络,协同调控玉米生长发育和胁迫应答过程。

关键词: 玉米, bZIP转录因子, 干旱-复水处理, 非生物胁迫

Abstract:

bZIP transcription factors are widely found in plants and play an important role in regulating plant growth and development and abiotic stress response.In order to explore the functional role of bZIP transcription factor in maize drought stress response,transcriptome sequencing technology was used to analyze the expression changes of transcription factors in maize seedlings treated with drought stress for 5 days and rehydration for 3 days,and a bZIP transcription factor(ZmbZIP26)was screened from transcriptome data in response to drought and rewatering treatment.Co-expression network analysis revealed that ZmbZIP26 was at the core node of network regulation.The gene contained a 558 bp open reading frame encoding 185 amino acids,which was a hydrophilic protein.Phylogenetic tree and conserved sequence analysis showed that ZmbZIP26 protein had high homology with homologous proteins of sorghum and Miscanthus,and also had the same conserved motifs at the same amino acid positions.Cis-element analysis showed that the upstream 2 000 bp region of the ATG site contained drought response elements,hormone response elements and light response elements.qRT-PCR analysis showed that ZmbZIP26 was a constitutively expressed gene,which was highly expressed in young stems,female panicles and roots.ZmbZIP26 positively responded to drought,high temperature,high salt and nitrogen stress and the process of restoring,which might play an important role in the process of plant resistance.Subcellular localization analysis revealed that ZmbZIP26 was a nuclear protein localized in the nucleus.Protein interaction prediction showed that ZmbZIP26 might interact with zinc finger protein,serine protein,Ca-dependent protein and glutathione transfer protein to construct a regulatory network,which cooperatively regulated maize growth and development and stress response process.

Key words: Maize, bZIP transcription factor, Drought-restoring treatment, Abiotic stress

引用本文

曹丽茹, 马晨晨, 庞芸芸, 叶飞宇, 王振华, 鲁晓民. 玉米bZIP转录因子ZmbZIP26的分子特征、亚细胞定位及响应非生物胁迫的表达分析[J]. 华北农学报, 2023, 38(4): 1-10. doi: 10.7668/hbnxb.20193892.

CAO Liru, MA Chenchen, PANG Yunyun, YE Feiyu, WANG Zhenhua, LU Xiaomin. Molecular Characteristics,Subcellular Localization and Expression Analysis of Maize bZIP Transcription Factor ZmbZIP26 in Response to Abiotic Stress[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(4): 1-10. doi: 10.7668/hbnxb.20193892.

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