Journal of Plant Biotechnology

  • 제32권2호
  • /
  • Pages.117-121
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  • 2005
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  • 1229-2818(pISSN)
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  • 2384-1397(eISSN)
한국식물생명공학회 (The Korean Society of Plant Biotechnology)
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국내 옥수수 품종 및 계통의 미숙배 배양으로부터 Yellowish Friable Embryogenic 캘러스 (YFEC) 생산과 식물체 재생

Yellowish Friable Embryogenic Callus (YFEC) Production and Plant Regeneration from Immature Embryo Cultures of Domestic Maize Cultivars and Genotypes (Zea may L.)

  • Cho Mi-Ae (Eugentech Inc) ;
  • Park Yun-Ok (Eugentech Inc) ;
  • Kim Jin-Suck (Korea Research Institute of Chemical Technology) ;
  • Park Ki-Jin (Maize Experiment Station, Gangwon-do Provincial Agricultural Research and Extension Service) ;
  • Min Hwang-Ki (Maize Experiment Station, Gangwon-do Provincial Agricultural Research and Extension Service) ;
  • Liu Jang-Ryol (Plant Cell Biotechnology Laboratory, Korea Research Institute of Bioscience and Biotechnology (KRIBB)) ;
  • Choi Pil-Son (Department of Medicinal Plant Resources, Nambu University)
  • 발행 : 2005.06.01
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초록

국내 옥수수 3품종 (두메찰, 미백찰, 흑점찰)과 5 계통(HW1, KL103, HW3, HW4, KW7)의 미숙배를 1 mg/L 2,4-D, 25 mM proline, 100 mg/L casamino acid, 3 mM MES, 1.7 mg/L $AgNO_3$, Eriksson's vitamin 및 20 g/L sucrose가 첨가된 MS배지 (SEM)에 5주 동안 배양하였다. 각 계통 및 품종의 체세포배 발생 빈도는 HW1 (45.20%), KL103 (5.75%), HW3 (37.20%), HW4 (30.10%), KW70 (55.20%), 미백찰 (18.74%), 흑점찰 (22.41%), 두메찰 (36.72%)이었으며, 모델 품종인 Hi II type에서는 10% 이하였다. Hi II계통에서 형성되는 type II캘러스와 같은 노란색의 부드러운 배발생캘러스 (yellowish friable embryogenic callus, YFEC)는 오직 HW3와 흑점찰 품종에서 형성되었으며, 반면 다른 품종 및 계통에서는 late-embryo단계의 단단한 체세포배가 직접 발생되거나 형태적으로 비정상 모양을 갖는 단단하고 팽창된 체세포배가 발생 되었다. 노란색의 부드러운 배발생캘러스 (yellowish friable embryogenic callus, YFEC)는 동일배지에서 빠르게 증식 되었고 6개월 이상 배발생 능이 유지 되었으며, 1차 재분화 배지와 2차 재분화배지에 옮겼을 때 모두 식물체로 전환 되었다. 그러나 단단한 노란색의 배발생캘러스와 비정상 형태의 체세포배는 동일배지에서 매우 느리게 증식되었고, 재분화 배지에서 낮은 식물체 전환율 (25%)을 보였다. 따라서 본 연구로부터 선발된 HW3와 흑점찰은 향후 국내 옥수수 유전자원을 이용한 형질전환 시스템 개발연구에 이용 될 수 있을 것으로 예상된다.

Immature embryos of 3 cultivars (Du Me Chal, Mi Baek Chal, Heug Jeom Chal) and 5 genotypes (HW1, KL103, HW3, HW4, KW7) were cultured on medium containing MS salts, Eriksson's vitamins, 1 mg/L 2,4-dichlorophenoxyacetic acid, 25 mM proline, 100 mg/L casamino acid, 3 mM MES, 1.7 mg/L $AgNO_3$ and 20 g/L sucrose (SIM). Frequency of somatic embryo formation on explant of immature embryos showed in HW1 (45.20%), KL103 (5.75%), HW3 (37.20%), HW4 (30.10%), KW70 (55.20%), Mi Baek Chal (18.74%), Heug Jeom Chal (22.41%), Du Me Chal (36.72%) and Hi II type (<10%), respectively. Yellowish friable embryogenic callus (YFEC) such as type II callus of Hi II genotype only produced from the HW3 and Heug Jeom Chal, whereas other cultivars and genotypes were directly formed somatic embryos with late-embryonic stages or expanded yellowish compact somatic embryo with morphological abnormality. The yellowish friable embryogenic callus (YFEC) could be proliferated on the same medium, which were maintained embryogenic capacity for 6 months over. Upon transfer to first regeneration and second regeneration medium, somatic embryos converted to plantlets at a frequency of approximately 100%. However, the expanded somatic embryos with abnormal morphology were slowly proliferated when subcultured on the same medium, and some of them were degenerated or converted to plantlets at a frequency of approximately 25%. Accordingly, The Heug Jeom Chal and HW3 genotype will be further used for development of high frequency transformation system in domestic maize germplasm.

키워드

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피인용 문헌

  1. Anomalous somatic embryos formation and plant regeneration from the cultures of immature embryos of Camellia japonica L. vol.38, pp.4, 2011, https://doi.org/10.5010/JPB.2011.38.4.258