To obtain transgenic cabbage line with broad insect resistance, a new synthetic Bacillus thuringiensis cry1Ba3 gene was
introduced into white cabbage via Agrobacterium tumefaciens-mediated transformation and 37 transformants were obtained.
Polymerase chain reaction (PCR) and Southern blot analyses confirmed that cry1Ba3 was successfully inserted into the
genome of cabbage. Reverse transcription-polymerase chain reaction (RT-PCR) demonstrated that cry1Ba3 was expressed.
Western blot results confirmed the production of insecticidal protein encoded by cry1Ba3. Insect bioassays showed that
transgenic cabbages effectively controlled both susceptible and Cry1Ac-resistant diamondback moth (DBM) larvae.
Key words: Bacillus thuringiensis cry1Ba3, cabbage, diamondback moth, resistance