Molecular Characterization of TRPA Subfamily Genes and Function in Temperature Preference in Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

To reveal the mechanism of temperature preference in Tuta absoluta, one of the top 20 plant pests in the world, we cloned and identified TaTRPA1, TaPain, and TaPyx genes by RACE and bioinformatic analysis, and clarified their expression profiles during different development stages using real-time PC...

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Bibliographic Details
Published in:International journal of molecular sciences 2021-07, Vol.22 (13), p.7157
Main Authors: Wang, Xiao-Di, Lin, Ze-Kai, Ji, Shun-Xia, Bi, Si-Yan, Liu, Wan-Xue, Zhang, Gui-Fen, Wan, Fang-Hao, Lü, Zhi-Chuang
Format: Article
Language:English
Subjects:
Adaptation
Adults
Amino acids
Behavior
Body temperature
Double-stranded RNA
Genes
Heat
Insects
Larvae
Lepidoptera
Pain
Painless
Pests
Polypeptides
Proteins
Pyrexia
RNA interference
RNA-mediated interference
Temperature perception
temperature preference
Temperature preferences
TRPA1
Tuta absoluta
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Summary:To reveal the mechanism of temperature preference in Tuta absoluta, one of the top 20 plant pests in the world, we cloned and identified TaTRPA1, TaPain, and TaPyx genes by RACE and bioinformatic analysis, and clarified their expression profiles during different development stages using real-time PCR, and revealed their function in preference temperature by RNAi. The full-length cDNA of TaPain was 3136 bp, with a 2865-bp open reading frame encoding a 259.89-kDa protein; and the partial length cDNA of TaPyx was 2326-bp, with a 2025-bp open reading frame encoding a 193.16-kDa protein. In addition, the expression of TaTRPA1 and TaPyx was significantly lower in larvae than other stages, and it was significantly higher in pupae and newly emerging males for TaPain. After feeding target double-stranded RNA (dsRNA), the preferred temperature decreased 2 °C more than the control group. In conclusion, the results firstly indicated the molecular characterization of TRPA subfamily genes and their key role in temperature perception in T. absoluta, and the study will help us to understand the temperature-sensing mechanism in the pest, and will provide some basis for study of other Lepidoptera insects’ temperature preference. Moreover, it is of great significance in enriching the research progress of “thermos TRP”.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms22137157