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General Information

Document type
  • Peer-reviewed journal article
GE organism
  • rice
GE trait
  • insect resistance
  • China, USA


Safety for environment
  • no effect

Transgenic Cry1Ab rice does not impact ecological fitness and predation of a generalist spider Open Access

Tian, JC; Chen, Y; Li, ZL; Li, K; Chen, M; Peng, YF; Hu, C; Shelton, AM; Ye, GY
PLOS ONE. 2012 April. 7(4):e35164

Link to full text (open access, freely available)

PMID: 22511982 DOI: 10.1371/journal.pone.0035164


BACKGROUND: The commercial release of rice genetically engineered to express a Cry1Ab protein from Bacillus thuringiensis (Bt) for control of Lepidoptera in China is a subject of debate. One major point of the debate has focused on the ecological safety of Bt rice on nontarget organisms, especially predators and parasitoids that help control populations of insect pests. METHODOLOGY/PRINCIPAL FINDINGS: A tritrophic bioassay was conducted to evaluate the potential impact of Cry1Ab-expressing rice on fitness parameters of a predaceous ground spider (Pardosa pseudoannulata (Bösenberg et Strand)) that had fed on Bt rice-fed brown planthopper (Nilaparvata lugens (Stål)) nymphs. Survival, development time and fecundity of this spider were not different when they were fed with Bt rice-fed or non-Bt rice-fed prey. Furthermore, ELISA and PCR gut assays, as well as a functional response trial, indicated that predation by P. pseudoannulata was not significantly different in Bt rice or non-Bt rice fields. CONCLUSIONS/SIGNIFICANCE: The transgenic Cry1Ab rice lines tested in this study had no adverse effects on the survival, developmental time and fecundity of P. pseudoannulata in the laboratory or on predation under field conditions. This suggests that this important predator would not be harmed if transgenic Cry1Ab rice were commercialized.


Bt rice, non-target organism, spider, Pardosa pseudoannulata


Funding source
  • National Program on Key Basic Research Projects
  • Ministry of Science and Technology of China
  • National Natural Science Foundation of China
  • Special Research Projects for Developing Transgenic Plants
Funding country
  • China
Funding type
  • government

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Cite this study


Tian, JC, Y Chen, ZL Li, K Li, M Chen, YF Peng, C Hu, AM Shelton, GY Ye. "Transgenic Cry1Ab rice does not impact ecological fitness and predation of a generalist spider." PLOS ONE 7.4 (2012): e35164. Web. 4 Mar. 2024.


Tian, JC., Chen, Y., Li, ZL., Li, K., Chen, M., Peng, YF., Hu, C., Shelton, AM., & Ye, GY. (2012). Transgenic Cry1Ab rice does not impact ecological fitness and predation of a generalist spider. PLOS ONE, 7(4), e35164. doi:10.1371/journal.pone.0035164

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