草莓FaWRKY70克隆与表达模式分析
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1.西藏职业技术学院;2.江苏农林职业技术学院

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西藏自治区自然科学基金项目(XZ202201ZR0004G)


Cloning and Expression Analysis of FaWRKY70 in Strawberry
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    摘要:

    【目的】深入解析WRKY70同源基因在草莓响应胁迫过程中的作用,为草莓分子育种提供新的基因资源。【方法】采用同源克隆法从草莓果实及叶片中克隆得到草莓WRKY70基因,利用生物信息学分析方法分析该基因理化性质、蛋白质结构、进化关系等,并结合qRT-PCR数据分析其表达模式。【结果】FaWRKY70基因全长为1 020 bp,编码339个氨基酸;比对得到的同源基因中,FaWRKY70与苹果、牡丹等同科物种氨基酸序列相似度较高,且同源基因大多与植物对生物和非生物胁迫的响应相关,暗示FaWRKY70可能参与草莓抵御胁迫的过程;FaWRKY70在草莓的花、果实、叶片、根、茎中均有表达,在花中表达量最高,果实中最低;在水杨酸处理后,FaWRKY70基因能够快速响应,表达量在3 h后达最高,随后逐渐降低。使用茉莉酸甲酯处理时FaWRKY70基因受诱导响应程度较小,整体呈现下调趋势。【结论】FaWRKY70能通过不同响应方式参与草莓生命活动及激素信号转导过程。

    Abstract:

    [Objective] The role of WRKY70 homologous gene in strawberry response to stress was analyzed in depth, so as to provide new genetic resources for strawberry molecular breeding. [Methods] The WRKY70 was cloned from strawberry fruits and leaves by homologous cloning method, and the physicochemical properties, protein structure and evolutionary relationship of the gene were analyzed by bioinformatics analysis, and its expression pattern was analyzed by qRT-PCR data. [Results] The FaWRKY70 was 1 020 bp in length and encoded 339 amino acids. Among the homologous genes obtained, FaWRKY70 had a high degree of amino acid sequence similarity with the same family species such as apple and peony, and most of the homologous genes were related to plant responses to biotic and abiotic stresses, suggesting that FaWRKY70 may be involved in the process of strawberry resistance to stress. FaWRKY70 was expressed in flowers, fruits, leaves, roots and stems of strawberry, with the highest expression level in flowers and the lowest in fruits. After salicylic acid treatment, the expression level of FaWRKY70 could respond rapidly, reaching the highest level after 3 hours, and then gradually decreasing. However, when treated with methyl jasmonate, the FaWRKY70 was less responsive to induction, and the overall trend was down-regulated. [Conclusion] FaWRKY70 can participate in strawberry life activities and hormone signal transduction through different response modes.

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  • 收稿日期:2023-10-10
  • 最后修改日期:2024-04-18
  • 录用日期:2024-04-19
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