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논문 기본 정보

자료유형
학술저널
저자정보
Shin, Young-Mi (Kumho Life and Environmental Science Laboratory, Chonnam National University) Choe, Goh (Kumho Life and Environmental Science Laboratory, Chonnam National University) Shin, Byoung-Chul (Kumho Life and Environmental Science Laboratory, Chonnam National University) Yi, Gi-Bum (Kumho Life and Environmental Science Laboratory, Chonnam National University) Yun, Pil-Yong (Jeju-Regional Innovation Agency, Jeju Hi-Tech Industry Development Institute) Yang, Ki-Young (Kumho Life and Environmental Science Laboratory, Chonnam National University) Lee, Joon-Seol (Mokpo Experiment Station, National Institute of Crop Science, RDA) Kwak, Sang-Soo (Laboratory of Environmental Biotechnology, KRIBB) Kim, Kyung-Moon (Kumho Life and Environmental Science Laboratory, Chonnam National University)
저널정보
한국식물학회 식물학회지 식물학회지 제50권 제2호
발행연도
2007.1
수록면
206 - 212 (7page)

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We have used two aminoglycosides, $G_{418}$ and paromomycin, to develop a reliable selection system for nptll transgenic sweetpotato (Ipomoea batatas(L.) Lam.). Embryogenic calli derived from shoot apical meristems were bombarded with gold particles coated with pCAMBIA2301, which contained the nptll and gusA genes. When compared on a kill curve that was based on calli proliferation and cell viability, $G_{418}$-selection proved to be more efficient and had fewer escapes than kanamycin. These bombarded explants were then selected on $G_{418}$-containing media. The total time required from bombardment to plant establishment in soil was seven to nine months. Multiple copies of the transgene were integrated into the sweetpotato genome. Northern analysis confirmed transgene expression in the regenerated plants, and a paromomycin assay demonstrated that the nptll gene was functionally expressed in transformed sweetpotato. These molecular analyses and assays all showed that selection with $G_{418}$ and paromomycin is reliable. So far, we have produced 69 transgenic events with this system, at a transformation frequency of approx. 1.1%. That efficiency is based on the number of transgenic plants obtained and the amount of calli bombarded. Thus, this selection method that combines $G_{418}$ with paromomycin is now available for selecting nptll transgenic sweetpotato.

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