Record Display for the EPA National Library Catalog


Main Title Effects of Cotton Expressing the 'Bacillus thuringiensis' var. 'kurstaki' Endotoxin on Soil Microorganisms.
Author Donegan, K. K. ; Seidler, R. J. ;
CORP Author National Health and Environmental Effects Research Lab., Corvallis, OR. ;Dynamac Corp., Corvallis, OR.
Publisher 1996
Year Published 1996
Report Number EPA/600/A-96/095;
Stock Number PB97-122709
Additional Subjects Cotton ; Endotoxins ; Soil microorganisms ; Bacteria ; Genetic engineering ; Bacillus thuringiensis
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB97-122709 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 23p
Many agriculturally important plants have been engineered to produce endotoxins from different subspecies of the bacterium Bacillus thuringiensis (B.t.). The endotoxin Bacillus thuringensis var. kurstake (B.t.k.) has demonstrated insecticidal activity against lepidopterans. Although high specificity has been assumed formost B.t. endotoxins, their effects on non-target organisms have not been fully evaluated. This chapter describes experiments that investigated the biological and moleuclar changes in microbial populations following the incorporation of purified B.t.k. endotoxin or B.t.k.-producing cotton into natural soils. Microbial populations were monitored for changes in the total numbers and species composition of culturable bacteria and fungi, in the substrate utilization if the bacterial community and in the total DNA content and DNA fingerprints of the eubacteria.