伴孢晶体

苏芸金杆菌伴孢晶体中P2毒素蛋白的研究

P_2 insecticidal protein from parasporal crystal of Bacillus thuringiensis

对烟草粉螟高毒力Bt菌的伴孢晶体研究

Study on Parasporal Crystal of Bacillus thuringiensis

对烟草粉螟高毒力Bt伴孢晶体的特征与SDS-PAGE分析

SDS-PAGE and Characteristic of Bacillus thuringiensis Parasporal Crystal

伴孢晶体是Bt杀虫活性的主要来源，它由一种或几种晶体蛋白组成，具有高度特异的杀虫活性，这种蛋白通常被称为杀虫晶体蛋白（ICPs）或δ-内毒素（δ-endotoxins）。

Parasporal crystals are usually called insecticidal crystal proteins ( ICPs ) or 8-endotoxins .

苏云金芽孢杆菌HD-1伴孢晶体水解规律的研究

The Hydrolysis 's Law of Parasporal Crystal of Bacillus thuringiensis HD-1

本研究为构建高效杀虫工程菌及进一步阐明Bt伴孢晶体中20-kbDNA分子的来源、结构和功能奠定了重要的基础。

All these made a good ground for constructing insecticidal recombinants and analyzing the source , structure , and function of the 20-kb DNA .

Bt的杀虫活性主要来自于生长过程中产生的伴孢晶体蛋白，亦称杀虫晶体蛋白ICPs（Insecticidalcrystalproteins，ICPs）。

The insecticidal activities of Bt come from the parasporal crystal proteins produced when Bt grows up , which is called insecticidal crystal proteins also ( ICPs for short ) .

苏云金杆菌菌株YJ-2000生长和伴孢晶体形成的适宜培养条件

Suitable culture conditions for the growth and parasporal crystal production of Bacillus thuringiensis strain YJ-2000

BtA、Bt伴孢晶体和阿维菌素对小菜蛾胃毒48h的LC50分别为：0.0136mg/mL、0.0059mg/mL、0.7274mg/mL。

Stomach toxicities of BtA , Bt-crystal toxin and Avermectin against P. xylostella in 48h were 0.0136mg / mL , 0.0059mg/mL and 0.7274mg/mL of LC 50 respectively .

实验证明：该菌株在基础培养基上培养72h以后，可以产生大量的伴孢晶体，晶体的大小为0.5～1.0μm，形状为菱形。

The results proved that : it can produce a lot of parasporal crystal after 72h in BP medium . The size of crystal is 0.5 ~ 1.0 u m. Its shape is rhombus .

5种中国苏云金芽孢杆菌的伴孢晶体蛋白基因分析

Analysis of five Chinese Bacillus thuringiensis formulations for the endotoxin components

伴孢晶体形态主要为大小不一的菱形、小正方形。

The spore-companion crystals mainly were different rhombus and small cuboidal .

苏云金芽孢杆菌工程菌伴孢晶体的形态发生

The Morphological Development of Parasporal Crystals of An Engineered Strain of Bacillus thuringiensis

四十株产生伴孢晶体的芽孢杆菌鉴定

Identification of 40 parasporal - crystal - forming Bacillus

干燥温度对苏云金芽孢杆菌伴孢晶体的结构及杀虫活性的影响

Effects of desiccation temperature on the insecticidal activity of parasporal crystal of Bacillus thuringiensis

粘虫幼虫对苏云金芽孢杆菌伴孢晶体低度敏感的机理探讨

Mechanism of Low Sensitivity of Mythimna separata Larvae to Parasporal Crystals of Bacillus thuringiensis

一株产伴孢晶体的霉状芽孢杆菌的研究

Studies on a Mycoid bacillus with parasporal crystal

昆虫中肠液性质对苏云金芽孢杆菌伴孢晶体毒力的影响

The effects of larval midgut fluid on the insecticidal activity of Bacillus thuringiensis parasporal crystal

该菌株具周生鞭毛，产生的伴孢晶体为钝菱形、不规则形和晶体镶嵌，且具显著晶格。

It could produce many sorts of parasporal crystals that were rhombic , irregular and mosaic bipyramid .

聚丙烯酰胺凝胶电泳结果表明，伴孢晶体由135～185kDa的特殊多肽组成。

It was known that parasporal crystals consisted of special polypeptide of 135 ~ 185 kDa by means of SDS PAGE .

苏云金杆菌是一种广泛应用的生物农药，苏云金杆菌在形成芽孢的同时，产生具有毒杀性的伴孢晶体。

Bacillus thuringiensis is a kind of widely used biotic pesticide , which produces a poisonous parasporal crystal along with producing the spores .