{Reference Type}: Journal Article
{Title}: Toxicity of Bacillus thuringiensis crystal proteins against eri silkworm, Samia cynthia ricini (Lepidoptera: Saturniidae).
{Author}: Sandeep Kumar D;Tarakeswari M;Lakshminarayana M;Sujatha M;
{Journal}: J Invertebr Pathol
{Volume}: 138
{Issue}: 0
{Year}: 07 2016
{Factor}: 2.795
{DOI}: 10.1016/j.jip.2016.06.012
{Abstract}: Ten purified crystal proteins of Bacillus thuringiensis (Bt) were tested at concentrations ranging from 2.93 to 3000ng/cm(2) for their toxicity to eri silkworm through protein paint bioassays using castor leaves. Based on LC50 values, Cry1Aa (2.6ng/cm(2)) was highly toxic followed by Cry1Ac (29.3ng/cm(2)) and Cry1Ab (68.7ng/cm(2)). The Cry1Ca and Cry1Ea proteins were moderately toxic to eri silkworm larvae and resulted in 23% and 28% mortality, respectively at the highest concentration tested (3000ng/cm(2)). Only reduction in larval weight was observed with Cry2Aa, Cry1Da and Cry9Aa proteins while Cry3Aa and Cry1Ba proteins were found to be nontoxic.