小麦TaWRKY47基因的克隆与表达分析
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河南省科技攻关项目(192102110031);


Cloning and Expression Analysis of TaWRKY47 Gene in Wheat
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    摘要:

    为了探究小麦WRKY基因的功能,该研究采用RTPCR方法,在小麦叶片组织中克隆WRKY基因,并对其进行生物信息学和不同逆境胁迫下的表达分析。结果表明:(1)成功克隆得到1个小麦WRKY基因,命名为TaWRKY47。(2)TaWRKY47基因开放阅读框长度为900 bp,编码299个氨基酸,含有一个WRKY保守结构域和一个C2HC锌指结构域,属于WRKY基因家族的第Ⅲ类成员。(3)亚细胞定位分析结果显示,TaWRKY47蛋白定位于细胞核。(4)荧光定量PCR结果表明,TaWRKY47基因在小麦根、茎、叶、雄蕊和雌蕊中均有表达,其中在雌蕊中表达量最高,且受低温、干旱、盐、ABA和H2O2等胁迫表达增强,推测TaWRKY47基因参与了小麦的逆境胁迫过程。该研究结果为进一步研究TaWRKY47基因功能与抗逆机制奠定了理论基础。

    Abstract:

    In order to explore the function of wheat WRKY gene, we cloned a WRKY gene from wheat leaves using RTPCR, and analyzed its bioinformatics and expression under different stresses . The results showed that: (1) the WRKY gene of wheat was successfully cloned, and was designated as TaWRKY47. (2) Sequence analysis showed that the length of TaWRKY47 open reading frame (ORF) was 900 bp, encoding 299 amino acids. The amino acid sequence contained a conserved WRKY domain and a zinc finger structure (C2HC), belonging to Group of WR8aKY Ⅲ family. (3) The subcellular localization analysis showed that TaWRKY47 was located in cell nucleus. (4) Expression pattern showed that TaWRKY47 gene was expressed in roots, stems, leaves, pistils and stamens, with the highest expression found in pistils. The expression of TaWRKY47 cloud be strongly induced by low temperature, drought, salt, ABA and H2O2 stresses. It is suggested that TaWRKY47 gene may play a positive role in stress resistance of wheat. The results provided a theoretical foundation for further study of TaWRKY47 gene function and the antistress mechanism.

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于永昂,张 蕾.小麦TaWRKY47基因的克隆与表达分析[J].西北植物学报,2020,40(9):1475-1482

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  • 在线发布日期: 2020-10-10
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