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Role of the pentose phosphate pathway during callus development in explants from potato tuber
Authors:KIKUTA, YOSHIO   AKEMINE, TETSUO   TAGAWA, TAKASHI
Affiliation:Department of Botany, Faculty of Agriculture, Hokkaido University Sapporo, Japan
Abstract:Metabolic change during callus formation in explants from potatotuber (Solarium tuberosum L.) was investigated. Under the presentculture conditions, callus starts exponential growth (estimatedby the fresh weight increase) with a 5-day lag period, at whichtime marked production of DNA occurs. In the lag period, respirationis very much resistant to malonate, and the value of the C6/C1ratio and activities of both G6PDH 6PGDH pass their peaks. Onthe basis of these and relevant findings, glucose metabolismthrough the PP pathway is surmised to play a significant rolein the initial DNA multiplication phase of callus development. (Received October 15, 1969; )
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