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Fig. 4. Maps of recombinant plasmids and strategy for constructing a strain of
Bacillus thuringiensis that produces Cyt1A, Cry11B and the
Bacillus sphaericus 2362 binary toxin. (A) p45S1 containing
cyt1A from B. thuringiensis subsp. israelensis and
binary toxin gene from B. sphaericus 2362. (B) pPFT11Bs-CRP
containing cry11B from B. thuringiensis subsp.
jegathesan. Amp, ampicillin-resistant gene; Erm,
erythromycin-resistant gene; Cm, chloramphenicol-resistant gene;
cyt1A-p, cyt1A promoters; cry1Ac-p, cry1Ac promoters; E.
c. ori, E. coli replication origin; B. t. ori, B. thuringiensis
replication origin.