The meeting schedule has been posted.
Information on the 5k run has been posted.
 41st Annual Meeting of the Society for Invertebrate Pathology |  | |
41st Annual Meeting of the Society for Invertebrate Pathology | | |
Latest InfoThe meeting schedule has been posted. Information on the 5k run has been posted. Navigation |
Screening for more toxic δ-endotoxins of Bacillus thuringiensis for the management of Spodoptera litura in India Venkatasamy Balasubramani1, 2; P. R. Johnston2; Neil Crickmore2 Spodoptera litura is a major pest attacking important commercial crops like cotton in India. Commercial Bt cotton hybrids carrying Cry1Ac toxin (Bollgard I type) or Cry1Ac and Cry2Ab toxins (Bollgard II type) give adequate control of the target insect Helicoverpa armigera, however there is a common opinion among farmers that S. litura is an emerging problem in Bt cotton. There is an urgent need to screen for more toxic holotype and/or hybrid Cry proteins against S. litura to minimise the use of chemical insecticides in Bt cotton, the main objective of transgenic cotton technology. In laboratory screening experiments G27, the EEC hybrid toxin producing strain, was more toxic than other holotypes (1Ca and 1Fa) and hybrids (AbAbC and AcAcC) tested. |