苏云金芽胞杆菌—开放的基因组与多种功能
摘要
苏云金芽胞杆菌Bacillus thuringiensis (Bt)作为微生物杀虫剂,被广泛应用于农业、林业和卫生害虫的防治;而利用Bt杀虫基因研制的转基因植物,也在全球植物害虫防治中发挥了重要作用。近年来,随着科学技术的发展与社会需求的拓展,Bt新的功能被不断发掘出来。这些新的功能包括抗线虫、抗病杀菌、促进植物生长、环境修复等。本文从Bt的泛基因组结构及其遗传学特性分析入手,在详细介绍了近来Bt杀虫基因发掘进展的同时,分析了泛基因组与Bt新的功能之间可能存在的关系,旨在为我国Bt资源的研究与应用提供参考。
关键词
苏云金芽胞杆菌;泛基因组;杀虫基因;抗菌作用;促进植物生长;环境修复
中图分类号:
Q 939.9
文献标识码:A
DOI:10.3969/j.issn.05291542.2017.04.001
Abstract
As an important biological insecticide, Bacillus thuringiensis has been widely used to control agricultural, forest and medical insect pests. Bt toxin genes have also been extensively used as gene source in genetically modified crops. In recent years, with the development of science, technology and social demands, some other new functions of Bt have been explored, including resistance to nematodes, antagonistic effects against plant pathogenic fungi and bacteria, plant growthpromoting activities, and environmental bioremediation. Based on the pangenome analysis and genetic peculiarity of Bt, we reviewed recent advances in Bt insecticidal genes, and analyzed the relationship between pangenome and various new functions of Bt, in order to provide a guide for the research and application of Bt in China.
Key words
Bacillus thuringiensis;pangenome;insecticidal gene;antagonistic effect;plant growthpromoting rhizobacteria (PGPR);environmental bioremediation
苏云金芽胞杆菌Bacillus thuringiensis (Bt)是革兰氏阳性的昆虫病原细菌[1],可产生芽胞及多种杀虫活性物质,在害虫防治方面的研究与应用一直是人们关注的热点。其产生的杀虫...
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