Journal of Integrative Agriculture ›› 2024, Vol. 23 ›› Issue (6): 1994-2005.DOI: 10.1016/j.jia.2023.09.023

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草地贪夜蛾瞬时受体电位通道基因的鉴定及TRPA1的功能研究

  

  • 收稿日期:2023-04-27 接受日期:2023-08-02 出版日期:2024-06-20 发布日期:2024-05-30

Identification of transient receptor potential channel genes and functional characterization of TRPA1 in Spodoptera frugiperda 

Yutong Zhang1*, Hangwei Liu2*, Song Cao2, 3*, Bin Li1, 2, Yang Liu1, Guirong Wang1, 2#   

  1. 1 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China

    2 Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China

    3 Institute of Evolution and Ecology, School of Life Sciences, Central China Normal University, Wuhan 430079, China

  • Received:2023-04-27 Accepted:2023-08-02 Online:2024-06-20 Published:2024-05-30
  • About author:Yutong Zhang, E-mail: 82101222333@caas.cn; Hangwei Liu, E-mail: liuhangwei2014@163.com; Song Cao, E-mail: csong@ccnu.edu.cn; #Correspondence Guirong Wang, E-mail: wangguirong@caas.cn * These authors contributed equally to this study.
  • Supported by:
    This work was funded by the Shenzhen Science and Technology Program, China (KQTD20180411143628272), the Special Funds for Science Technology Innovation and Industrial Development of Shenzhen Dapeng New District, China (pt202101-02) and the National Key R&D Program of China (2022YFE0116500).

摘要:

草地贪夜蛾是一种极具破坏性的害虫,由于其强大的繁殖和迁飞能力,已成为一种全球性害虫。瞬时受体电位(Transient Receptor PotentialTRP通道一个庞大的离子通道家族,在昆虫感知外界环境和维持内部稳态中发挥着举足轻重的作用。近年来,TRP通道在昆虫行为调控中的重要作用得到了广泛的研究。本研究草地贪夜蛾基因组中鉴定了15TRP基因座共编码26个转录本,并分析了其在不同发育阶段的表达谱。结果表明,草地贪夜蛾含有4TRPC基因、6TRPA基因、1TRPM基因、2TRPV基因、1TRPN基因和1TRPML基因,但并未鉴定到TRPP基因。此外,利用爪蟾卵母细胞表达系统对SfruTRPA1功能进行了鉴定,SfruTRPA1能被20 ~ 45℃范围内的升高温度激活,在相同温度范围内重复刺激后无明显脱敏现象。外,SfruTRPA1能被天然化学物质异硫氰酸烯丙酯(allyl isothiocyanate, AITC)和肉桂醛(cinnamaldehyde, CA)激活研究草地贪夜蛾的TRP通道基因进行了鉴定,为开发针对TRP通道的新型农药提供了靶标,也为全面解析TRP通道在昆虫生理功能中的作用奠定了基础。

Abstract:

Spodoptera frugiperda is a highly destructive pest that has become a global problem due to its robust reproductive and migratory capabilities.  Transient receptor potential (TRP) channels, which constitute a vast ion channel family, play pivotal roles in sensing the external environment and maintaining internal homeostasis in insects.  TRP channels have been widely investigated for their critical roles in regulating various insect behaviors in recent years.  In this study, we identified 15 TRP gene loci encoding 26 transcripts in the genome of Sfrugiperda and analyzed their expression profiles at different developmental stages.  The results revealed that Sfrugiperda possesses four TRPC genes, six TRPA genes, one TRPM gene, two TRPV genes, one TRPN gene, and one TRPML gene, while a canonical TRPP is absent.  Moreover, the SfruTRPA1 was functionally characterized using the Xenopus oocyte expression system.  The results showed that SfruTRPA1 is activated by temperature increases from 20 to 45°C, and there is no significant desensitization after repeated stimuli within the same temperature range.  Additionally, SfruTRPA1 is activated by certain natural chemicals, including allyl isothiocyanate (AITC) and cinnamaldehyde (CA).  These findings provide valuable insights to the TRP genes in Sfrugiperda.

Key words: Spodoptera frugiperda ,  transient receptor potential channel ,  expression profile ,  TRPA1 ,  Xenopus oocyte