TY - JOUR
T1 - Carbohydrate, metabolic, and osmotic changes in scaled-up liquid cultures of Narcissus leaves
AU - Chen, Jianxin
AU - Ziv, Meira
PY - 2003/11
Y1 - 2003/11
N2 - The use of scaled-up liquid cultures could be an efficient system for mass propagation of Narcissus, as it can greatly reduce the costs involved with manual handling. Induction of hyperhydric meristematic leaf section clusters and proliferation were carried out in an ancymidol (ANC)-containing liquid medium in flasks and disposable presterilized plastic bioreactors. Non-hyperhydric bulblets started to develop from hyperhydric meristematic leaf section clusters after subculture on a 0.8% agar strength medium, and young bulbs formed after 10 mo. in vivo acclimatization with a 98% survival rate. The present study reveals that in Narcissus leaf sections cultured in liquid medium, morphogenetic changes in leaf sections were associated with metabolic changes. The changes in carbohydrate, protein, and water potential of the liquid media and leaf sections were found to be closely related to meristematic center initiation on Narcissus hyperhydric leaf sections. Starch, sucrose, and glucose were significantly higher in the hyperhydric leaf sections cultured in ANC medium. The water potential was significantly higher in ANC-treated leaf sections and significantly lower in the medium containing ANC, at the stage shortly before or after hyperhydricity and meristematic centers began forming on the leaf sections. A 30 k Da protein was found to be present in the hyperhydric leaf sections. Based on the present study, a large-scale micropropagation protocol of Narcissus in agar and liquid cultures is proposed.
AB - The use of scaled-up liquid cultures could be an efficient system for mass propagation of Narcissus, as it can greatly reduce the costs involved with manual handling. Induction of hyperhydric meristematic leaf section clusters and proliferation were carried out in an ancymidol (ANC)-containing liquid medium in flasks and disposable presterilized plastic bioreactors. Non-hyperhydric bulblets started to develop from hyperhydric meristematic leaf section clusters after subculture on a 0.8% agar strength medium, and young bulbs formed after 10 mo. in vivo acclimatization with a 98% survival rate. The present study reveals that in Narcissus leaf sections cultured in liquid medium, morphogenetic changes in leaf sections were associated with metabolic changes. The changes in carbohydrate, protein, and water potential of the liquid media and leaf sections were found to be closely related to meristematic center initiation on Narcissus hyperhydric leaf sections. Starch, sucrose, and glucose were significantly higher in the hyperhydric leaf sections cultured in ANC medium. The water potential was significantly higher in ANC-treated leaf sections and significantly lower in the medium containing ANC, at the stage shortly before or after hyperhydricity and meristematic centers began forming on the leaf sections. A 30 k Da protein was found to be present in the hyperhydric leaf sections. Based on the present study, a large-scale micropropagation protocol of Narcissus in agar and liquid cultures is proposed.
KW - Ancymidol
KW - Hyperhydricity
KW - Large-scale micropropagation
KW - Liquid culture
KW - Narcissus tazetta
UR - http://www.scopus.com/inward/record.url?scp=0345802627&partnerID=8YFLogxK
U2 - 10.1079/IVP2003451
DO - 10.1079/IVP2003451
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AN - SCOPUS:0345802627
SN - 1054-5476
VL - 39
SP - 645
EP - 650
JO - In Vitro Cellular and Developmental Biology - Plant
JF - In Vitro Cellular and Developmental Biology - Plant
IS - 6
ER -