NDLI: Potato Expressing Beetle-Specific Bacillus thuringiensis Cry3Aa Toxin Reduces Performance of a Moth

Content Provider	Springer Nature Link
Author	Hussein, Hany M. Habuštová, Oxana Turanli, Ferit Sehnal, František
Copyright Year	2006
Abstract	Expression of the Bacillus thuringiensis beetle-specific toxin Cry3Aa, which renders a genetically modified potato cultivar resistant to the Colorado potato beetle Leptinotarsa decemlineata, exerts a deleterious effect on the polyphagous moth Spodoptera littoralis. The caterpillars of S. littoralis feed less and produce smaller pupae on the genetically modified cultivar (NewLeaf Superior) than on the parental nontransgenic cultivar (Superior). The conversion efficiencies of total dry matter, combustion heat, carbon, and nitrogen from leaves to insect biomass are similar on both cultivars. In spite of similar food utilization and a relatively small difference in the body mass at pupation, female adults that developed from caterpillars fed on NewLeaf Superior lay a mean of 309 eggs compared to a mean of 713 eggs deposited by females that developed from caterpillars fed on Superior. Because of this difference and a simultaneous reduction in fertility (egg hatchability) from 78 to 48%, a pair of adults that fed as larvae on NewLeaf Superior produces only 148 larvae, whereas a pair of adults that fed as larvae on Superior produces 556 larvae. We suggest that small amounts of Cry3Aa that accumulate in insect tissue and persist until the adult stage are responsible for the decline in reproduction.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF
ISSN	00980331
Journal	Journal of Chemical Ecology
Volume Number	32
Issue Number	1
e-ISSN	15731561
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-02-26
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bacillus thuringiensis Spodoptera littoralis Leptinotarsa decemlineata genetically modified crops Cry3Aa Bt applications insect digestion pest population growth Physical Chemistry Agriculture Ecology Biological Microscopy
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Ecology, Evolution, Behavior and Systematics

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