Plant Regeneration through Organogenesis from Callus of Camptotheca acuminata Decaisne
2009
Bae, D.H., Chonnam National University, Gwangju, Republic of Korea | Park, W.S., Forest Resources Research Institute, Naju, Republic of Korea | Hwang, S.J., Chonnam National University, Gwangju, Republic of Korea | Hwang, B., Chonnam National University, Gwangju, Republic of Korea
Camptotheca acuminata, a native of South China is a well known natural source of monoterpene-indole alkaloid camptothecin(CPT), one of the most promising anti-tumoural compounds. This study was conducted to optimize plant growth regulators and culture conditions on plantlets regeneration through organogenesis from callus of Camptotheca acuminta. Callus were induced from various explants of in vitro germinated plantlets of C. acuminta using WPM medium containing 0.2 mg/L 2,4-D. Hypocotyl segments were exhibited higher embryogenic callus than the other explants. Shoot buds formation from embryogenic callus was affected by plant growth regulators, pre-treated dark condition and liquid culture. Organogenesis was optimal in WPM liquid medium containing 0.5 mg/L BA. The dark pre-treatment for 2 weeks before the solid culture was effective for organogenesis. The regenerated shoots were rooted in WPM medium with 0.2 mg/L NAA and successfully acclimated in green-house conditions.
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