Activity of Bacillis thuringiensis toxins against cocoa pod borer larvae

D. Santoso, T. Chaidamsari, S. Wiryadiputra, R.A. de Maagd

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)


Twelve Cry proteins from Bacillus thuringiensis Berliner were tested in bioassays on cacao plantations in Indonesia for activity against the larvae of cocoa pod borer (Conopomorpha cramerella (Snellen)), an insect pest of the cacao tree. Through the damage caused by their feeding, the larvae of cocoa pod borer cause the pods of the cocoa tree to ripen prematurely. They are difficult to control with conventional measures. Preliminary assays identified five toxins that were more active than others. In two subsequent bioassays the activity of selected toxins was determined more accurately. Three Cry1 proteins with relatively little homology were all found to be toxic, opening perspectives for controlling cocoa pod borer by expression of Cry proteins in transgenic plants
Original languageEnglish
Pages (from-to)735-738
JournalPest Management Science
Issue number8
Publication statusPublished - 2004


  • brush-border membrane
  • crystal proteins
  • domain iii
  • spodoptera-exigua
  • lepidoptera
  • resistance
  • management
  • binding


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