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題名 | Allelochemical Induction of Hormone-metabolizing Microsomal Monooxygenases in the Fall Armyworm=相剋物質誘導草地黏蟲微粒體代謝激素單加氧酶的活性 |
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作者姓名(中文) | 游錫堅; | 書刊名 | 動物研究學刊 |
卷期 | 39:3 2000.07[民89.07] |
頁次 | 頁243-249 |
分類號 | 385 |
關鍵詞 | 青春激素; 蛻皮激素; 細胞色素P450; 草地黏蟲; 相剋物質; Juvenile hormone; Ecdysone; Cytochrome P450; Fall armyworm; Allelochemicals; |
語文 | 英文(English) |
中文摘要 | 青春激素III(JH III)經由來自草地黏蟲中腸內的微粒體所氧化,這種氧化未連結於微粒體膜上,需要NADPH來活化,然而會被一氧化碳和piperonyl butoxide所抑制,因此是一典型的微粒體加氧化[],又稱為JH III氧化[]。以[][]甲醇、荼酚黃峒等相剋物質餵食草地黏蟲的幼蟲,分別提高了JH III氧化[]的活性達188%和105%。這個研究同時利用許多種類的相剋物質,誘導脫皮素20-單加氧梅的活性。結果發現許多食物中的成份如多種單[]類、倍半烯[]類、[][]類等物質可以提高脫皮素20-單加氧[]的活性53%~234%。其中[][]類的harmine是最強的誘導劑。 |
英文摘要 | Juvenile hormone III was oxidized by midgut microsomes prepared from larvae of the fall armyworm, Spodoptera frugiperda (JE Smith). The oxidase is membrane bound, requires NADPH for activity, and is inhibited by carbon monoxide and piperonyl butoxide; it therefore is a typical microsomal monooxygenase, hereafter referred to as JH III oxidase. Feeding the allelochemicals. indole-3-carbinol and β-napthoflavone, to larvae cause 188% and 105% increases. respectively, in JH III oxidase activity as compared with the controls. Induction of microsomal ecdysone 20-monooxygenase activity by allelochemicals was further studied in this insect. Dietary monoterpenes [(+)-pulegone, (+)-imonene, β-myrcene,(+)-camphor, (+)-camphene, α-terpinene, []-terpinene], sesquiterpenes (farnesol, nerolidol), indoles (harmine), coumarins (coumarin), methylenedioxphenyl compounds (safrole, isosafrole, myristicin, piperonyl butoxide), and ketohydrocarbons (2-tridecanone) all stimulated ecdysone 20-monooxygenase activity in larvae from 53% to 234% as compared with the controls. Harmine was the most potent inducer among those tested. Azadiractin when administered orally or by injection had no effect on ecdysone 20-monooxygenase activity in fall armyworms. |
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