title: Integration of the delta-endotoxin gene of Bacillus thuringiensis into the chromosome of root-colonizing strains of pseudomonads using Tn5.
abstract: The delta-endotoxin gene (tox) from Bacillus thuringiensis subsp. kurstaki HD-1 was cloned into Tn5 and the resulting Tn5-tox element transposed from a vector plasmid into the chromosome of six corn-root-colonizing strains of Pseudomonas fluorescens and Agrobacterium radiobacter. Chromosomal integration of the tox gene maximized stability and minimized the potential for horizontal transfer of the tox gene to other bacterial species. Expression of the tox gene was demonstrated by Western blot analysis and by toxicity against larvae of the tobacco hornworm (Manduca sexta). The method described illustrates how a given gene can be stably integrated into the chromosome of diverse bacterial species.
mesh_terms: D001413:Bacillus thuringiensis / Q000235:genetics*; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D002876:Chromosomes, Bacterial / Q000502:physiology; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D004251:DNA Transposable Elements; D004731:Endotoxins / Q000235:genetics*; D005796:Genes; D005798:Genes, Bacterial; D006460:Hemolysin Proteins; D010957:Plasmids; D011551:Pseudomonas fluorescens / Q000235:genetics*; D012231:Rhizobium / Q000235:genetics*
chemical_list: D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004251:DNA Transposable Elements; D004731:Endotoxins; D006460:Hemolysin Proteins; C030956:insecticidal crystal protein, Bacillus Thuringiensis; D004262:DNA Restriction Enzymes