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자료유형
학술저널
저자정보
안율균 (농촌진흥청 원예연구소) 전종성 (경희대학교) 윤무경 (농촌진흥청 원예연구소)
저널정보
한국분자세포생물학회 Molecules and Cells Molecules and Cells 제36권 제2호
발행연도
2013.8
수록면
158 - 162 (5page)

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The genetic improvement of garlic plants (Allium sativum L.) with agronomical beneficial traits is rarely achieved due to the lack of an applicable transformation system. Here, we developed an efficient Agrobacterium-mediated transformation procedure with Danyang, an elite Korean garlic cultivar. Examination of sGFP (synthetic green fluorescence protein) expression revealed that treatment with 2-(N-morpholino) ethanesulfonic acid (MES), L-cysteine and/or dithiothreitol (DTT) gives the highest efficiency in transient gene transfer during Agrobacterium co-cultivation with calli derived from the roots of in vitro plantlets. To increase stable transformation efficiency, a two-step selection was employed on the basis of hygromycin resistance and sGFP expression. Of the hygromycin-resistant calli initially produced, only sGFP-expressing calli were subcultured for selection of transgenic calli. Transgenic plantlets produced from these calli were grown to maturity. The transformation efficiency increased up to 10.6% via our optimized procedure. DNA and RNA gel-blot analysis indicated that transgenic garlic plants stably integrated and expres-sed the phosphinothricin acetyltransferase (PAT) gene. A herbicide spraying assay demonstrated that transgenic plants of garlic conferred herbicide resistance, whilst non-transgenic plants and weeds died. These results indicate that our transformation system can be efficiently utilized to produce transgenic garlic plants with agronomic benefits.

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