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＜departmental bulletin paper＞
On the exotoxin of Bacillus thuringiensis var. thuringiensis Berliner : (1) Separation and the effect of toxin on silk worm

Creator
Author PID
L000934
Creator Name
田中, 健治
Tanaka, Kenji
Affiliation
Affiliation Name
農林省食糧研究所
Food Research Institute, Ministry of Agriculture and Forestry
Creator Name
貞包, 治夫
Sadakane, Haruo
Affiliation
Affiliation Name
九州大学農学部
Department of Water and Forests, Faculty of Agriculture, Kyushu University
Author PID
L001137
Creator Name
村上, 浩紀
Murakami, Hiroki
Affiliation
Affiliation Name
九州大学農学部
Department of Water and Forests, Faculty of Agriculture, Kyushu University
Creator Name
波多野, 昌二
Hatano, Shoji
Affiliation
Affiliation Name
九州大学農学部
Department of Water and Forests, Faculty of Agriculture, Kyushu University
Author PID
L000569
Creator Name
渡辺, 忠雄
Watanabe, Tadao
Affiliation
Affiliation Name
九州大学農学部
Department of Water and Forests, Faculty of Agriculture, Kyushu University
Language
Japanese
Publisher
九州大學農學部
Faculty of Agriculture, Kyushu University
Date
1972-03
Source Title
Science bulletin of the Faculty of Agriculture, Kyushu University
Vol
26
Issue
1/4
First Page
537
Last Page
544
Publication Type
Version of Record
Access Rights
open access
JaLC DOI
https://doi.org/10.15017/23112
Related DOI
九州大學農學部學藝雜誌 || 26(1-4) || p537-544
Science bulletin of the Faculty of Agriculture, Kyushu University || 26(1-4) || p537-544
http://www.agr.kyushu-u.ac.jp/
Related URI
九州大學農學部學藝雜誌 || 26(1-4) || p537-544
Science bulletin of the Faculty of Agriculture, Kyushu University || 26(1-4) || p537-544
http://www.agr.kyushu-u.ac.jp/
Relation
九州大學農學部學藝雜誌 || 26(1-4) || p537-544
Science bulletin of the Faculty of Agriculture, Kyushu University || 26(1-4) || p537-544
http://www.agr.kyushu-u.ac.jp/

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Details

Record ID
23112
Peer-Reviewed
Unrefereed
Subject Terms
菌体外毒素
家蚕
リボース
燐
蛹化
フェノールオキシダーゼ活性
酵素阻害
Bacillus thuringiensis var. thuringiensis Berliner
in vitro
ISSN
0368-6264
NCID
AN0005519X
Notes
Insecticidal exotoxin produced from Bacillus thuringiensis var. thuringiensis Berliner was found to contain two components called F-I and F-II. Both of them had an adenine, a phosphorus and a ribose in their molecules. Molecular weight of F-I was calculated as 860 electrophotometrically. F-I was about 10 times more toxic than F-II by the lethal potency to silkworms. Toxin-injected worms were killed with elongated duration of a instar, and without ecdysis. Molting worms were less sensitive to the toxin F-I than working worms. Phenoloxidase activity in the integument of the silkworms which were injected with F-I were kept at low levels, even when the activity of normal bodies arose more higher. But the toxin scarcely inhibited the enzymatic activity in vitro.
1. BTTが産生する低分子の菌体外毒素はF-I,F-IIの2種の成分からなり,その各々はリボースおよび燐を1部宛含んでおり,その毒性はF-ＩがF-IIにくらべて10倍以上強力であつた. 2. F-Iの家蚕に対する毒性は食桑蚕に対する時が眠中のそれに対する時よりも強かつた.また蚕蛹に対しては蛹化後6日以前に注射した時には羽化することなく死に至つたが,8日以降に注射すると羽化が認められ,その後斃死した. 3. 家蚕の品種による毒性の感受性には著しい差はなかつた. 4. 本毒素は蛹化前におけるフェノールオキシダーゼ活性の上昇を阻止したが,in vitroにおける酵素阻害は100倍以上の高濃度の毒素によつてわずかに認められたにすぎなかつた.
Created Date 2012.07.25
Modified Date 2022.11.11

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