Acta Entomologica Sinica (2004) 47, 454-460

Yong-Hou Jiang, Qiang Fu, Jia-An Cheng, Zeng-Rong Zhu, Ming-Xing Jiang, Gong-Yin Ye and Zhi-Tao Zhang (2004)
[Dynamics of Cry1Ab protein from transgenic Bt rice in herbivores and their predators]
Acta Entomologica Sinica 47 (4), 454-460
Abstract: Levels of Cry1Ab protein in several herbivores and their predators through the food chain, originating from transgenic Bt rice (KMD1) were studied in the laboratory. The results showed that the levels of Cry1Ab in the striped stem borer (SSB ) Chilo suppressalis continuously fed with KMD1 MD1 for 36 h declined with time at the booting stage as well as at the maturing stage. Levels of Cry1Ab in Mycalesis gotama continuously feeding on KMD1 or on Xushui 11 control rice after feeding on KMDI for two days declined with time, but more dramatically than those of SSB. High levels of Cry1Ab were detected in faeces of both C. suppressalis and M. gotama, but no Cry1Ab was detected in the controls. 3.5 ng/g Cry1Ab was detected in the haemolymph of C. suppressalis feeding on KMD1. Different levels of Cry1Ab were detected in the brown planthopper (BPH) Nilaparvata lugens, the rice aphid (RA) Sitobion avenae reared on KMD1 1, and the wolf spider (WS) Pirata subpiraticus fed with preys that had ingested KMD1. The concentration of Cry1Ab protein in P. subpiraticus fed with M. gotama larvae reared on KMD1 was about 60 times higher than that in P. subpiraticus fed with C. suppressalis reared on KMD1 for 36 h, and no Cry1Ab protein was detected in the controls. These results indicated that the Cry1Ab protein could be transferred along the food chain.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Jia-An Cheng, Qiang Fu, Zeng-Rong Zhu, Zhi Tao Zhang

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Chilo suppressalis	Rice (Oryza)
	Mycalesis gotama	Rice (Oryza)
Pirata subpiraticus (predator)
Bacillus thuringiensis genes in crops (entomopathogen)	Chilo suppressalis	Rice (Oryza)
Bacillus thuringiensis Cry1A-toxin (entomopathogen)	Chilo suppressalis	Rice (Oryza)