• Title/Summary/Keyword: genetically modified

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Study on Environmental Risk Assessment for Potential Effect of Genetically Modified Nicotiana benthamiana Expressing ZGMMV Coat Protein Gene

  • Kim, Tae-Sung;Yu, Min-Su;Koh, Kong-Suk;Oh, Kyoung-Hee;Ahn, Hong-Il;Ryu, Ki-Hyun
    • The Plant Pathology Journal
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    • v.22 no.4
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    • pp.353-359
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    • 2006
  • Transgenic Nicotiana benthamiana plants harboring the coat protein(CP) gene of Zucchini green mottle mosaic virus(ZGMMV) were chosen as a model host for the environmental risk assessment of genetically modified plants with virus resistance. This study was focused on whether new virus type may arise during serial inoculation of one point CP mutant of ZGMMV on the transgenic plants. In vitro transcripts derived from the non-functional CP mutant were inoculated onto the virus-tolerant and -susceptible transgenic N. benthamiana plants. Any notable viral symptoms that could arise on the inoculated transgenic host plants were not detected, even though the inoculation experiment was repeated a total of ten times. This result suggests that potential risk associated with the CP-expressiing transgenic plants may not be significant. However, cautions must be taken as it does not guarantee environmental safety of these CP-mediated virus-resistant plants, considering the limited number of the transgenic plants tested in this study. Further study at a larger scale is needed to evaluate the environmental risk that might be associated with the CP-mediated virus resistant plant.

Environmental Monitoring of Herbicide Tolerant Genetically Modified Zoysiagrass (Zoysia japonica) around Confined Field Trials (제초제저항성 유전자변형 들잔디의 시험 격리포장 주변 환경방출 모니터링)

  • Lee, Bumkyu;Park, Kee Woong;Kim, Chang-Gi;Kang, Hong-Gyu;Sun, Hyeon-Jin;Kwon, Yong-Ik;Song, In-Ja;Ryu, Tae-Hun;Lee, Hyo-Yeon
    • Weed & Turfgrass Science
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    • v.3 no.4
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    • pp.305-311
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    • 2014
  • The cultivation area and use of genetically modified (GM) crops have been increased continuously over the world. Seed distribution and transgenes to environmental ecosystem is one of the most important factors in risk assessment and risk management of GM crop. Safe management for the development and commercialization of GM crops is required according to The Act on Transboundary Movements of Living Modified Organisms,etc (LMO Act) in Korea. This study was conducted to setup the environmental monitoring system of GM zoysiagrass (event JG21 and JG21-MS). The monitoring was performed in 4 GMO confined fields, Sungwhan, Ochang, Jeju University and Jeju Namwon. In the result of monitoring, we could not found any gene flow and distribution of GM zoysiagrass in the 3 fields, but one spill of JG21 was found in the Namwon field in 2012. These results suggest that continuous monitoring is necessary to detect the occurrence of GM zoysiagrass for preventing genetic contamination in natural environment.

The Path Analysis of Consumers' Decision-making to Purchase GMO Foods and Request for Labelling It (소비자의 유전자재조합 콩 식품 구매의사 및 표시요구에 대한 경로 분석)

  • Huh, Kyung-Ok
    • Korean Journal of Human Ecology
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    • v.12 no.3
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    • pp.351-362
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    • 2003
  • The goal of this study was to examine the effects of perceived risks toward GMO (Genetically Modified Organism) food on the decision-making to purchase it and demands to reveal its Identity. The major results were as follows. First, consumers strongly perceived the risk toward GMO food, and demanded labeling to identify it. But, many consumers had indecisive in the purchase of GMO food. Second, consumers with high level of perceived risks toward GMO food were more likely not to buy GMO food. In addition, the level of perceived risk was high among consumers who had many children. Finally, consumers with high level of perceived risks toward GMO food were more likely to demand the labelling for identifying GMO food. Consumers who had many children and high level of reliability for labelling food safety strongly demanded to label for revealing GMO food.

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In Vitro Neural Cell Differentiation of Genetically Modified Human Embryonic Stem Cells Expressing Tyrosine Hydroxylase

  • Shin, Hyun-Ah;Lee, Keum-Sil;Cho, Hwang-Yun;Kim, Eun-Young;Lee, Won-Don;Park, Sepill;Lim, Jin-Ho
    • Proceedings of the KSAR Conference
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    • 2004.06a
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    • pp.273-273
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    • 2004
  • This study was to examine in vitro neural cell differentiation pattern of the genetically modified human embryonic stem cells expressing tyrosine hydroxylase (TH). Human embryonic stem (hES, MB03) cell was transfected with cDNAs cording for TH. Successful transfection was confirmed by western immunoblotting. (omitted)

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