Note
Frass failure and pupation failure as quantal measurements of Bacillus thuringiensis toxicity to lepidoptera

https://doi.org/10.1016/0022-2011(91)90199-ZGet rights and content

First page preview

First page preview
Click to open first page preview

References (0)

Cited by (19)

  • Activity of Bacillus thuringiensis cyt1Ba crystal protein against hymenopteran forest pests

    2013, Journal of Invertebrate Pathology
    Citation Excerpt :

    B. thuringiensis strains PS86Q3 and PS201T6 and Escherichia coli strains NRRL B-21017 (expressing the cyt1Ba gene from PS201T6) and NRRL B-21018 (expressing the 130-kDa protein gene from PS201T6) were obtained from the National Center for Agricultural Utilization Research (Peoria, ILL). Culturing, harvesting and toxin solubilization protocols were described previously (van Frankenhuyzen and Gringorten, 1991). Concentrated crystal–spore suspensions were obtained by repeated centrifugation and washing of lysed cultures in filter-sterilized distilled water.

  • Bioassay of bacterial entomopathogens against insect larvae

    2012, Manual of Techniques in Invertebrate Pathology
  • Insecticidal activity of Bacillus thuringiensis crystal proteins

    2009, Journal of Invertebrate Pathology
    Citation Excerpt :

    Because individuals vary in their response, toxicity is often estimated as the quantity that needs to be administered to obtain an observable effect (lethal or sublethal) in a given proportion (usually 50%) of the test population, yielding a 50% effective or lethal concentration (hereafter referred to as EC50 or LC50, respectively). Although sublethal effects (feeding inhibition and growth reduction) are the more sensitive indicators of crystal protein toxicity (MacIntosh et al., 1990; van Frankenhuyzen and Gringorten, 1991), mortality was used as response variable in the majority (∼95%) of the bioassays. Toxicity differences within and among species are of primary interest but are confounded by other factors.

View all citing articles on Scopus
View full text