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18.97.14.87
18.97.14.87
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참나무류의 원형질체 분리 및 융합에 (融合) 영향을 끼치는 요인에 관한 연구
Studies on Factors Affecting Isolation and Fusion of Protoplasts of Quercus Species
현정오 , 김재헌 , 장석소 ( Jung Oh Hyun , Jae Hun Kim , Suk So Chang )
UCI I410-ECN-0102-2008-520-002105387

Factors affecting isolation and fusion of protoplasts of three Quercus species were investigated and procedures for isolation, purification and fusion of protoplasts of the three species were also established. Unhardened leaves and rapidly growing callus cultures were good source of viable protoplasts. The optimum composition of enzyme mixture for rapid isolation of protoplasts from leaf mesophyll tissues and calli was Cellulase Onozuka R-10 (20g/ℓ, Macerozyme R-10(10g/ℓ), Pectinase(250 units/ℓ, CaCl₂·2H₂O(14mM), MgSO₄·7H₂O(1.8mM), KNO₃(1.0mM), H₃BO₃(1.0mM), KH₂PO₄(0.2mM), KI(1.0μM), 1,4-dithiothreitol (0.1mM) and mannitol (0.6M). Optimum density of protoplasts for maximum fusion was 2×10^5/㎖ which was the highest protoplast density given in this study. Optimum concentration and duration of PEG 1450 treatment for inducing fusion appeared to be 29%(W/V) final PEG 1450 concentration and 5-10 minutes, respectively.

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