摘要:
The invention belongs to the technical field of genetic engineering of agricultural microorganisms. Specifically, the invention relates to producing and using gene cluster for thuringiensin synthesis from Bacillus thuringiensis. The gene cluster includes 11 genes of thuA, thuB, thuC, thuD, thuE, thuF, thuG, thu1, thu2, thu3 and thu4. These genes have the nucleotide sequence as shown in SEQ ID NO: 1. And the thuringiensin biosynthetase encoded by these genes have the amino acid sequences as shown in SEQ ID NO: 2-12. The genes according to the invention and the proteins encoded by those genes can be used as new nucleosides lead compound of pesticide library and provide new target for developing insecticides. In practical use, a series of new, efficient and low toxic insecticide can be obtained by structure modification.
摘要翻译:本发明属于农业微生物遗传工程技术领域。 具体地说,本发明涉及生产和使用苏云金芽孢杆菌的苏氨酸素合成基因簇。 基因簇包含thuA,thuB,thuC,thuD,thuE,thuF,thuG,thu1,thu2,thu3和thu4等11个基因。 这些基因具有如SEQ ID NO:1所示的核苷酸序列。由这些基因编码的苏云金素生物合成酶具有如SEQ ID NO:2-12所示的氨基酸序列。 根据本发明的基因和由这些基因编码的蛋白质可以用作农药图谱的新核苷酸铅化合物,并提供开发杀虫剂的新靶标。 在实际应用中,通过结构修饰可以获得一系列新型,高效,低毒的杀虫剂。
摘要:
The isolation, cloning of an enhancin gene bel1 from Bacillus thuringiensis, and the use of an enhancin Bel1 in biological insecticides are disclosed in the present invention. A new enhancin gene bel1 is isolated from Bacillus thuringiensis subsp. kurstaki YBT-1520, and its encoded product is a new enhancin Bel1. The enhancin has very strong effect-enhancing activity on the insecticidal action of insecticidal crystal protein Cry1Ac in killing Lepidoptera insects. The insecticidal activity of genetically engineered Bacillus thuringiensis BMB0187 developed on the basis of this enhancin is 5.7 times as high as that of the initial strain.
摘要:
The present invention discloses the isolation, cloning and use of insecticidal crystal proteins from Bacillus thuringiensis. The present invention isolates a novel insecticidal crystal protein gene cry7Ba1 from B. thuringiensis subsp. huazhongensis YBT-978 strain, and said gene encodes a novel insecticidal crystal protein Cry7Ba1, which shows insecticidal activity against Lepidopteran insects. The present invention also discloses the gene sequence of the novel insecticidal crystal protein, uses suitable expression vectors to transform micro-organisms so as to express the product Cry7Ba1 encoded by the gene and make it exert the insecticidal activity of the protein against Lepidopteran pests.
摘要:
The isolation, cloning of an enhancin gene bel1 from Bacillus thuringiensis, and the use of an enhancin Bel1 in biological insecticides are disclosed in the present invention. A new enhancin gene bel1 is isolated from Bacillus thuringiensis subsp. kurstaki YBT-1520, and its encoded product is a new enhancin Bel1. The enhancin has very strong effect-enhancing activity on the insecticidal action of insecticidal crystal protein Cry1Ac in killing Lepidoptera insects. The insecticidal activity of genetically engineered Bacillus thuringiensis BMB0187 developed on the basis of this enhancin is 5.7 times as high as that of the initial strain.
摘要:
The present invention discloses the isolation, cloning and use of insecticidal crystal proteins from Bacillus thuringiensis. The present invention isolates a novel insecticidal crystal protein gene cry7Bal from B. thuringiensis subsp. huazhongensis YBT-978 strain, and said gene encodes a novel insecticidal crystal protein Cry7Bal, which shows insecticidal activity against Lepidopteran insects. The present invention also discloses the gene sequence of the novel insecticidal crystal protein, uses suitable expression vectors to transform micro-organisms so as to express the product Cry7Bal encoded by the gene and make it exert the insecticidal activity of the protein against Lepidopteran pests.