摘要:
A transposable element, or transposon, isolated from Bacillus thuringiensis (B.t.) and designated as transposon Tn5401. The invention also includes a method of using this transposon in a site-specific recombination system for construction of recombinant B.t. strains that contain insecticidal B.t. toxin protein genes and that are free of DNA not native to B.t..
摘要:
Methods and compositions for the control of pests of the family Calliphoridae are described. Specifically, Bacillus thuringiensis (B.t.) isolates having anti-calliphorid activity are disclosed. Also described are recombinant hosts which express B.t. genes coding for pesticidal toxins. The B.t. isolates and recombinant proteins are shown to be useful in a method for controlling calliphorids including screw-worms and the sheep blowfly.
摘要:
The invention relates to sequences of nucleotides of bacteria, particularly Gram+ bacteria such as bacteria of the Bacillus type and more particularly sequences of nucleotides of the gene CryIIIA for the control of the expression of DNA sequences in a cellular host. The invention relates particularly to an expression system comprising a DNA sequence susceptible of being involved in the control of the expression of a coding sequence of nucleotides. Said DNA sequence comprises a promoter, as well as a sequence of nucleotides called 'downstream region', situated between the promoter and the coding sequence of the gene to be expressed, and susceptible of acting at the post-transcriptional level during the expression of the gene. Preferably, the downstream region comprises a nucleotide sequence S2 comprising an essentially complementary region at the extremity 3' of the RNA 16S of the ribosomes of Bacillus type bacteria.
摘要:
Disclosed and claimed are toxins and genes from Bacillus thuringiensis strains designated PS80JJ1, PS158D5, PS167P, PS169E, PS177F1, PS177G, PS204G4, PS204G6 which can be used to control corn rootworm. Mutants which retain the activity of the parent strain can be used to control the pest. Further, isolated spores or purified toxins from these isolates can be used to control corn rootworm. Genes encoding δ-endotoxins can be removed from these strains using standard well-known techniques, and transferred to other hosts. Expression of the δ-endotoxin in such hosts results in control of corn rootworm larvae.
摘要:
Certain isolates of Bacillus thuringiensis (B.t.) have been found to have activity against scarab pests. These isolates are designated B.t. PS86B1, B.t. PS43F and B.t. PS50C. These isolates, or transformed hosts containing the gene expressing a scarab-active toxin obtained from the isolates, can be used to control scarab-active pests, e.g., masked chafer, Cyclocephala sp., June bettle, Cotinis sp., northern masked chafer, Cyclocephala borealis, Japanese beetle, Popillia japonica, and Pasadena masked chafer, Cyclocephala pasadenae, in various environments.
摘要:
Bacillus thuringiensis serovar japonensis strain Buibui (FERM BP-3465) belonging to Bacillus thuringiensis serovar japonensis and capable of producing insecticidal toxin proteins to kill coloepterous larvae, and an insecticide containing, as an effective ingredient, the toxin proteins produced.
摘要:
A Bacillus thuringiensis strain isolate, designated EG5144, exhibits insecticidal activity against coleopteran insects, including Colorado potato beetle and insects of the genus Diabrotica. A novel toxin gene in B.t. strain EG5144 produces an irregularly shaped insecticidal crystal protein of approximately 70 kDa that is toxic to coleopteran insects. The cryIII-type gene (SEQ ID NO:1), designated as the cryIIIC(b) gene, has a nucleotide base sequence illustrated in Figure 1.
摘要翻译:命名为EG5144的苏云金芽孢杆菌菌株分离株表现出对鞘翅目昆虫的杀虫活性,包括科罗拉多马铃薯甲虫和Diabrotica属的昆虫。 一种新型毒素基因 菌株EG5144产生约70kDa的不规则形状的杀虫晶体蛋白,对鞘翅目昆虫有毒。 称为cryIIIC(b)基因的cryIII型基因(SEQ ID NO:1)具有图1所示的核苷酸碱基序列。
摘要:
Two purified and isolated cryI-type genes were obtained from a novel B.t. strain. One gene, designated cryIF (SEQ ID NO:1), has a nucleotide base sequence coding for the amino acid sequence illustrated in Figure 1. The 134 kDa crystal protein, designated CryIF (SEQ ID NO:2), produced by this gene is toxic to European corn borer larvae and other lepidopteran insects. The second gene, designated cryIX, produces a crystal portein of about 81 kDa, designated CryIX, that is also toxic to lepidopteran insects.
摘要:
Plants made resistant to insects by transforming their nuclear genome with two or more DNA sequences, each encoding a different non-competitively binding B. thuringiensis protoxin or insecticidal part thereof, preferably the toxin thereof.
摘要:
A plant cell transformed with all or part of a Bacillus thuringiensis gene coding for either a 130 or 132 kDa protoxin against Lepidoptera, preferably with a part of the gene coding just for the respective 62 or 60 kDa trypsin-digestion product of the protoxin. A plant, regenerated from the transformed cell, is resistant to Lepidoptera.