Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Acute toxicity evaluation of drought-tolerant transgenic rice Agb0103 to Daphnia magna

  • Oh, Sung-Dug (Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Lee, Bum Kyu (Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Park, Soo-Yun (Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Yun, Doh-Won (Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Sohn, Soo-In (Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Chang, Ancheol (Department of Agricultural Biotechnology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Suh, Sang Jae (School of Applied Biosciences, Kyungpook National University)
  • Received : 2016.04.21
  • Accepted : 2016.06.08
  • Published : 2016.06.30
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Abstract

A drought-tolerant transgenic rice (Agb0103) was developed using a pepper methionine sulfoxide reductase (CaMsrB2) under the control of rice Rab21 promoter with a selection marker, the phosphinothricin acetyltransferase (PAT) gene. Commercialization of genetically modified (GM) crops will require the evaluation of risks associated with the release of GM crops. With the potential problems associated to GM crops safety testing, the investigation of their effects on non-target organisms is necessary for environmental risk research. This study was carried out to assess acute toxicity of a GM crop using the water flea (Daphnia magna) for non-target organism risk evaluation. The effect of acute toxicity on Daphnia magna of Agb0103 rice and a non-GM rice, Ilmibyeo, were investigated at different concentrations (0, 625, 1,250, 2,500, 5,000, and 10,000 mg/L). The Agb0103 rice used for the test was confirmed to express the CaMsrB2/PAT gene by the PCR and ELISA. Daphnia magna feeding tests showed no significant differences in cumulative immobility or abnormal response with either Agb0103 rice or non-GM rice. The 48hr-EC50 values showed no difference between Agb0103 rice (2243 mg/L) and non-GM rice (2694 mg/L). These results suggest that there is no significant difference in toxicity to Daphnia magna between Agb0103 rice and its non-GM counterpart.

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References

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