Pest Management Science (2014) 70, 734-742

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Guijun Wan, Zhihao Dang, Gang Wu, Megha N. Parajulee, Feng Ge and Fajun Chen (2014)
Single and fused transgenic Bacillus thuringiensis rice alter the species-specific responses of non-target planthoppers to elevated carbon dioxide and temperature
Pest Management Science 70 (5), 734-742
Abstract:
BACKGROUND
The approval of transgenic Bacillus thuringiensis (Bt) rice by China was momentous for biotech crops, although it has yet to be approved for commercial production. Non-target pest problems in rice paddies, such as the three ecologically similar species of planthoppers Nilaparvata lugens, Laodelphax striatellus and Sogatella furcifera, could become increasingly serious under global climate change. Fused (Cry1Ab/Cry1Ac) and single (Cry1Ab) transgenic Bt rice were evaluated for effects on species-specific responses of planthoppers to elevated carbon dioxide (CO2) and temperature.
RESULTS
Transgenic Bt rice lines significantly modified species-specific responses of the planthoppers to elevated CO2 and temperature. High temperature appears to favour outbreaks of S. furcifera relative to N. lugens and L. striatellus when feeding upon fused transgenic Bt rice, especially at elevated CO2. Elevated CO2 at high temperature appears to be a factor reducing S. furcifera occurrence when feeding upon single transgenic Bt rice.
CONCLUSION
Different types of transgenic Bt rice alter the species-specific responses of non-target planthoppers to elevated CO2 and temperature. Compared with their non-transgenic parental lines, the single transgenic Bt rice shows better performance in controlling the non-target planthopper S. furcifera by comparison with the fused transgenic Bt rice under elevated CO2 and temperature. It is suggested that multitypes of transgenic Bt rice be used in the field simultaneously in order to take advantage of high transgenic diversity for optimal performance against all pests in paddy fields.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Megha N. Parajulee

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
Research topic(s) for beneficials or antagonists:
non-target effects/fate in environm.


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Nilaparvata lugens
Sogatella furcifera
Laodelphax striatellus
Bacillus thuringiensis Cry1A-toxin (entomopathogen)