Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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In vitro culture of adventitious root from Rhodiola sachalinensis

기내배양을 통한 홍경천(Rhodiola sachalinensis)의 부정근 생산

  • Bae, Kee-Hwa (Division of Forest Resources, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Yoon, Eui-Soo (Department of Biological Science, Kongju National University) ;
  • Choi, Yong-Eui (Division of Forest Resources, College of Forest and Environmental Sciences, Kangwon National University)
  • Published : 2009.08.30
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Abstract

Rhodiola sachalinensis is one of the most popular oriental medicines in East Asia. It is a perennial herb, belonging to the family Crassulaceae, which is mainly distributed in mountains at the altitudes of 1700-2500 m in Baek-Du mountain. Cultivation of this species for the production of medicine materials is not easy in nature, because of restrict habitats. In vitro production of roots can be applicable for the production of medicinal materials. Here, we investigated the optimal conditions for induction and proliferation of adventitious roots in in vitro culture system. Leaf, stem and root segments from R. sachalinensis were cultured on Murashige and Skoog(MS) medium supplemented with the various concentrations of IBA(Indole-3-butyric acid)(0.5, 1.0, 3.0, and 5.0 mg/L) and sucrose(10, 30, 50, and 100 g/L). The optimal explant for adventitious root induction was leaf segment. Induction of adventitious roots was highest on MS medium supplemented with 5.0 mg/L IBA and sucrose 30 g/L. In liquid culture, fresh weight of adventitious roots was highest(15.65 g) on 1/3 strength MS liquid medium supplemented with 5.0 mg/L IBA with 30 g/L sucrose. These results revealed the first attempt for the production of adventitious roots in R. sachalinensis.

홍경천의 잎, 줄기, 뿌리 절편을 이용하여 기내 부정근의 생산 체계를 확립하였다. 먼저 홍경천의 잎, 줄기, 뿌리 절편을 0.1, 1.0, 3.0 및 5,0 mg/L의 IBA와 sucrose가 10, 30, 50 및 100 g/L가 첨가된 MS 배지위에 치상하여 부정근의 유도율을 조사하였다. 부정근의 유도는 잎, 줄기 절편에서 IBA의 농도가 5.0 mg/L 일때 가장 높은 유도율을 보였으며, 뿌리 절편은 IBA 3.0 mg/L 첨가된 배지에서 부정근 유도율이 가장 높았다. Sucrose의 농도는 30 g/L가 첨가되었을 때 잎, 줄기, 뿌리 절편에서 높은 유도율을 나타났다. 고체배지 조건에서 부정근의 유도율이 가장 우수한 조건을 기본으로 액체배양을 실시하였으며, 염의 농도에 따른 부정근의 증식조건을 조사하였다. 1/3MS 배지에서 홍경천의 부정근을 배양하였을 때 1/2MS, MS 액체 배지조건 보다 약 2배, 2.5배의 부정근 생장량을 보였다.

Keywords

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