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Alcohol dehydrogenase 5 of Helicoverpa armigera interacts with the CYP6B6 promoter in response to 2‐tridecanone
Author(s) -
Zhao Jie,
Wei Qian,
Gu XinRong,
Ren SuWei,
Liu XiaoNing
Publication year - 2020
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/1744-7917.12720
Subject(s) - helicoverpa armigera , biology , alcohol dehydrogenase , midgut , gene knockdown , biochemistry , cabbage looper , microbiology and biotechnology , trichoplusia , botany , larva , gene , enzyme , noctuidae
Alcohol dehydrogenase 5 (ADH5) is a member of medium‐chain dehydrogenase/reductase family and takes part in cellular formaldehyde and S‐nitrosoglutathione metabolic network. 2‐tridecanone (2‐TD) is a toxic compound in many Solanaceae crops to defend against a variety of herbivory insects. In the broader context of insect development and pest control strategies, this study investigates how a new ADH5 from Helicoverpa armigera ( Ha ADH5) regulates the expression of CYP6B6 , a gene involved in molting and metamorphosis, in response to 2‐TD treatment. Cloning of the HaADH5 complementary DNA sequence revealed that its 1002 bp open reading frame encodes 334 amino acids with a predicted molecular weight of 36.5 kD. Ha ADH5 protein was purified in the Escherichia coli Transetta (pET32a‐ HaADH5 ) strain using a prokaryotic expression system. The ability of Ha ADH5 protein to interact with the 2‐TD responsive region within the promoter of CYP6B6 was confirmed by an in vitro electrophoretic mobility shift assay and transcription activity validation in yeast. Finally, the expression levels of both HaADH5 and CYP6B6 were found to be significantly decreased in the midgut of 6th instar larvae after 48 h of treatment with 10 mg/g 2‐TD artificial diet. These results indicate that upon 2‐TD treatment of cotton bollworm, Ha ADH5 regulates the expression of CYP6B6 by interacting with its promoter. As Ha ADH5 regulation of CYP6B6 expression may contribute to the larval xenobiotic detoxification, molting and metamorphosis, Ha ADH5 is a candidate target for controlling the growth and development of cotton bollworm.