Korean Journal of Plant Tissue Culture (식물조직배양학회지)

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Expression of Proteinase Inhibitor II gene in Transgenic Flowering Cabbage, Brassica oleracea var. acephala DC.

형질전환된 꽃양배추에서 Proteinase Inhibitor II 유전자의 발현

  • Published : 1998.03.01
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Abstract

Hypocotyl explants of flowering cabbage were cocultured with Agrobacterium tumefaciens LBA4404;;pGA875 harboring proteinase inhibitor II(PI-II) cDNA and then regenerated into plants. Sucessful transcripts of PI-II gene were detected by RNA dot blot analysis. Bioassay was conducted on transgenic flowering cabbage. It was confirmed that insecticidal activities of transformants were much higer than that of control plants. In progeny test of hansformants, 27.4% of T$_1$ seeds was resistant on MS medium containing 20 mg/L kanamycin.

PI-II cDNA가 도입된 식물발현 벡터인 pGA875를 가진 A.tumefaciens LBA4404를 이용하여 꽃양배추의 하배축 조직에 형질전환하여 식물체를 재분화 시켰다. Dot blot 분석으로 PI-II 유전자가 전사됨을 확인할 수 있었다. 또한 이들 개체를 담배거세미나방 유충을 이용하여 생물검정한 결과 대조구에 비해 형질전환체 잎의 섭식정도가 현저히 떨어지는 것을 알 수 있었다. 개화후 이들 개체의 종자를 받아 후대검정을 실시하였을 때 27,4%가 kanamycin내성을 가진 꽃양배추로 확인되었다.

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