浙江农业学报 ›› 2024, Vol. 36 ›› Issue (8): 1832-1843.DOI: 10.3969/j.issn.1004-1524.20231173

• 园艺科学 • 上一篇    下一篇

秋茄KoWRKY43基因克隆、表达与生物信息学分析

蒋文骏1(), 舒红锁2, 陈正满3, 任典挺2, 杨党1,4, 田荣江1, 杜照奎1,4,*()   

  1. 1.台州学院 生命科学学院,浙江 台州 318000
    2.三门县自然资源和规划局,浙江 三门 317100
    3.台州循环经济发展有限公司,浙江 台州 318000
    4.台州学院 浙江省植物进化生态学与保护重点实验室,浙江 台州 318000
  • 收稿日期:2023-10-09 出版日期:2024-08-25 发布日期:2024-09-06
  • 作者简介:*杜照奎,E-mail: dzk@tzc.edu.cn
    蒋文骏(2003—),男,浙江仙居人,本科生,主要从事植物分子生物学研究。E-mail: 3202250665@qq.com
  • 通讯作者: 杜照奎
  • 基金资助:
    台州市科技计划(22nya05);浙江省自然资源厅科技项目(2021-43);浙江省基础公益研究计划(GN21C160013)

Cloning, expression, and bioinformatics analysis of KoWRKY43 gene in Kandelia obovata

JIANG Wenjun1(), SHU Hongsuo2, CHEN Zhengman3, REN Dianting2, YANG Dang1,4, TIAN Rongjiang1, DU Zhaokui1,4,*()   

  1. 1. School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang, China
    2. Sanmen Bureau of Natural Resources and Planning, Sanmen 317100, Zhejiang, China
    3. Taizhou Circular Economy Development Co., Ltd., Taizhou 318000, Zhejiang, China
    4. Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, Zhejiang, China
  • Received:2023-10-09 Online:2024-08-25 Published:2024-09-06
  • Contact: DU Zhaokui

摘要:

转录因子WRKY在开花植物中广泛存在,参与并调节植物的生长发育与防御反应等。为探究红树植物秋茄WRKY基因在非生物胁迫过程中的作用,以秋茄幼苗为试验材料,提取叶片总RNA,通过反转录PCR(RT-PCR)技术克隆获得KoWRKY43基因(GenBank登录号OR789874),采用生物信息学手段分析其基因序列和蛋白质结构特点,利用实时荧光定量PCR(qRT-PCR)技术研究其表达模式。结果表明,KoWRKY43基因开放阅读框(ORF)为942 bp,编码313个氨基酸,蛋白质分子式为C1484H2415N439O459S14,分子量为34.2 ku,理论等电点为9.74,无信号肽,无跨膜结构,定位于细胞核,与木薯、银白杨和簸箕柳亲缘关系相对较近。qPCR检测显示,KoWRKY43基因在秋茄根中表达量最大,显著高于茎、叶、花和果实;幼叶KoWRKY43的表达量受NaCl诱导持续上升,在24 h表达量最大;激素水杨酸和脱落酸的诱导使其表达量先升高后降低,在6 h达到峰值;茉莉酸甲酯在24 h内均未显著改变其表达水平。研究结果为后续开展KoWRKY43基因的功能研究和培育抗逆秋茄品种提供了理论基础。

关键词: 秋茄, KoWRKY43基因, 生物信息学分析, 基因克隆, 激素

Abstract:

The transcription factor WRKY is widespread in flowering plants, and regulates plant growth, development and defense responses. To explore the role of the WRKY gene in Kandelia obovata under abiotic stresses, total RNA was extracted from the leaves of K. obovata, and then the KoWRKY43 gene (GenBank accession number OR789874) was cloned by reverse transcription-PCR (RT-PCR); the gene sequence and protein structure were analyzed by bioinformatics, and its expression pattern was studied by real-time fluorogenic quantitative PCR (qRT-PCR). The results showed that the gene contained an open reading frame (ORF) of 942 bp, encoding 313 amino acids. The protein KoWRKY43, with a molecular formula of C1484H2415N439O459S14, a molecular weight of 34.2 ku, and a theoretical isoelectric point of 9.74, had no signal peptide or transmembrane structure, and it was predicted to be located in the nucleus. Phylogenetic analysis indicated that KoWRKY43 had the most homology with Manihot esculenta, Populus alba and Salix suchowensis. The qRT-PCR analysis showed that the expression abundance of KoWRKY43 gene was highest in roots, which was significantly higher than that in stems, leaves, flowers and fruits. The expression level of the KoWRKY43 in young leaves was induced by NaCl, salicylic acid (SA) and abscisic acid (ABA), and the highest expression levels were observed at 24 h, 6 h and 6 h, respectively. However, methyl jasmonate (MeJA) did not significantly alter the expression level of KoWRKY43 within 24 h. The present research provided a theoretical basis for subsequent functional studies of the gene and the cultivation of stress-resistant K. obovata varieties.

Key words: Kandelia obovata, KoWRKY43 gene, bioinformatics analysis, gene cloning, hormone

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