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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 47 - 54 (8page)
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Background Various kinds of transposable elements (TEs) constitute high proportions of eukaryotic genomes. Although most of these TEs are not actively mobile, genome stress can induce mobilization of dormant TEs. Transgenic plants undergo tissue culture and subsequent whole-plant regeneration, which can cause genomic stress and in turn induce mobilization of inactive TEs. Objectives To investigate the activation of transposable elements on the genome wide of the GM plant. Methods Transposon activities were analyzed in three transgenic rice plants carrying the insect resistance gene Cry1Ac and an herbicide resistance gene by the transposon display technique. These three transgenic plants were derived from a leading Korean rice variety, Illmi. Results We detected seven mobile activities in the mPing element, which is a MITE family transposon. The identity of the novel fragments in the gel display was confirmed by checking TAA target site duplication via sequence analysis. The genomic integration sites were all on different chromosomes, and the integrations were specific to either one or two T1 transgenic lines, except for one common integration on chromosome 4. One integration was in the 5′-UTR of the Glycerol3-phosphate acyltransferase 8 gene, two integrations were in introns of expressed genes, and the other four integrations were in intergenic regions. Conclusion Thus, novel mobilization of dormant TEs occurs in transgenic plants, which must be considered in the generation of genetically modified crops (GM crops).
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