8Sanchis V,Gohar M,Chaufaux J,et al.Development andfield performance of a broad-spectrum nonviable asporogenic recombinant strain of Bacillusthuringiensis with greater potency and UV resistance[J].Apppl Environ Microbiol,1999,65(9):4032~4039.
5Sambmok J , Fritsch E F , Maniatis T, et al. Molecular Cloning. A Laboratory Manual , 2nd ed [M]. Cold Spring Harbor NY: Cold Spring Harbor Laboratory, 1989.
6Narva K E, Payne J M, Schwab G E, et al. Novel Bacillus thuringiensis microbes active against nemotodes and genes encoding novel nemotodes active toxins cloned from Bt isolates[P]. EP 0462721A2. 1991.