Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Pakistan Journal of Biological Sciences
Year: 1999  |  Volume: 2  |  Issue: 4  |  Page No.: 1472 - 1477

Entomocidal Activity of Bacillus Thuringiensis Transgenic Rice Plants Against Rice Leaffolder, Cnaphalocrocis Medinalis (Lepidoptera: Pyralidae).

Rizwana Anwar, Shahid Karim and S. Riazuddin    

Abstract: Transgenic rice plants obtained through the incorporation of Bt cry1Ac gene. Initially putative transformants were screened for pesticidal activity against rice leaf folder larvae. Selected putative transformants showed a range of larval mortality from 20-100 percent to C. medinalis. The integration of the Bt cry gene was checked by Polymerase Chain Reaction (PCR), using primers 5` ACA GAA GAC CCT TCA ATA TC 3` and 3` GTT ACC GAG TGA AGA TGT AA 5` for amplification of a 656 bp fragment of DNA from the genomic DNA of putative transformants. Selection based on PCR and initial bioassays, two transgenic plants designated as, CAMB 1148 and CAMB 1150 were further confirmed for toxin expression by ELISA, Western blot analysis and comparative biotoxicity assay. ELISA and Western blot were performed with polyclonal antibody of Cry1Ac toxins that showed the presence of active ingredient of Bt toxin in both plants. Biotoxicity assays also reconfirmed the stability and activity of Cry toxins in both transgenic rice plants, eventually aiming for homozygosity with enhanced resistance to rice leaf folder.

Cited References   |    Fulltext    |   Related Articles   |   Back
 
 
   
 
 
 
  Related Articles

 
 
 
 
 
 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility