더덕 (Codonopsis lanceolata)의 부정근 유도 및 생장에 미치는 배양조건과 생물반응기 배양

초록

This paper reported the establishment of mass production system of adventitious roots of Codonopsis lanceolata through shake flask and bioreactor culture. Induction of adventitious roots was started from the explants of leaf, stem and root on 1/2 strength Murashing and Skoog (MS) solid medium. Stem segments were the best explants for induction of adventitious roots compared to leaf and root segments. Among the different auxins tested (NAA, IBA and IAA), number of adventitious root per explant was highest on solid medium with 1.0 mg/L IBA, and produced 9.9±1.2 roots per explant. However, growth of adventitious roots was fast in the presence of IBA at low concentration (0.1 mg/L). In shake flask culture, maximum production of adventitious roots (fresh weight) was obtained in half-strength MS medium compared to full-strength and one-third MS medium. When the adventitious roots produced in shake-flask culture were transferred to 5 L air-lift bioreactor, 16 times of fresh weight increase was gained after one month of culture. These results indicate that this protocol for the production of C. lanceolata adventitious roots can be applied to large scale culture for practical application.