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  1. B300 農学部/生命農学研究科
  2. B300a 雑誌掲載論文
  3. 学術雑誌

Expressional and functional analysis of CYP15A1, a juvenile hormone epoxidase, in the red flour beetle Tribolium castaneum

http://hdl.handle.net/2237/00033514
d9ad2721-a98c-4604-9012-b1ba3bf77e0a
名前 / ファイル ライセンス アクション
Minakuchi_et_al_MS.pdf Minakuchi_et_al_MS (284.0 kB)
Minakuchi Minakuchi et al_Figs,Tables (10.4 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2021-02-10
タイトル
タイトル Expressional and functional analysis of CYP15A1, a juvenile hormone epoxidase, in the red flour beetle Tribolium castaneum
著者 Minakuchi, Chieka

× Minakuchi, Chieka

WEKO 103446

Minakuchi, Chieka

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Ishii, Fumika

× Ishii, Fumika

WEKO 103447

Ishii, Fumika

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Washidu, Yumiko

× Washidu, Yumiko

WEKO 103448

Washidu, Yumiko

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Ichikawa, Akio

× Ichikawa, Akio

WEKO 103449

Ichikawa, Akio

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Tanaka, Toshiharu

× Tanaka, Toshiharu

WEKO 103450

Tanaka, Toshiharu

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Miura, Ken

× Miura, Ken

WEKO 103451

Miura, Ken

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Shinoda, Tetsuro

× Shinoda, Tetsuro

WEKO 103452

Shinoda, Tetsuro

Search repository
権利
権利情報 © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
抄録
内容記述 Juvenile hormone (JH) is synthesized and secreted by the corpora allata. In the final two steps of JH biosynthesis, farnesoic acid (FA) is converted to JH through methylation by JH acid O-methyltransferase (JHAMT) and epoxidation by the cytochrome P450 enzyme CYP15. In the present study, we identified a homolog of CYP15 from the red flour beetle Tribolium castaneum (TcCYP15A1), and analyzed its expression as well as its role in JH biosynthesis. Quantitative RT-PCR analysis showed that the level of TcCYP15A1 mRNA was high in the embryonic stage as well as in the middle of the final larval instar. In the embryonic stage, the transcript level of TcCYP15A1 started to increase 30 h after egg laying (AEL), peaked 54–60 h AEL, and was followed by an increase of TcJHAMT mRNA, suggesting that JH biosynthesis started at this time point. TcCYP15A1 mRNA was present, but not exclusively so in the larval corpora allata. The recombinant TcCYP15A1 protein epoxidized both FA and methyl farnesoate (MF) in highly stereo-specific manners. These results confirmed that TcCYP15A1 is involved in JH biosynthesis. The RNAi-mediated knockdown of TcCYP15A1 in the pre-final larval instar did not result in precocious metamorphosis to pupa, indicating that MF may exhibit JH-like activity in order to maintain the larval status. The double knockdown of TcJHAMT and TcCYP15A1 resulted in pupae and adults with shorter wings, suggesting that the precursors of JH, JH acid and MF, may be essential for wing expansion.
内容記述タイプ Abstract
出版者
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
DOI
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.jinsphys.2015.04.008
ISSN(print)
収録物識別子タイプ ISSN
収録物識別子 0022-1910
書誌情報 Journal of Insect Physiology

巻 80, p. 61-70, 発行日 2015-09
著者版フラグ
値 author
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