Journal
PLANT SCIENCE
Volume 160, Issue 2, Pages 355-360Publisher
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0168-9452(00)00399-X
Keywords
anthocyanin; strawberry; chalcone synthase; phenyalanine ammonia-lyase; DAHP synthase; conditioned medium
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A conditioned medium (CM) prepared from cell suspension cultures of strawberry stimulated anthocyanin synthesis. The effect was significantly (P < 0,05) greater than that of synthetic medium (SM), with macronutrient concentrations, carbohydrate concentrations and pH adjusted to those of CM. The activity of 3-deoxy-D-arabino-heptulosonate 7-phosphate (DAHP) synthase (EC 4.1.2.15) (DS-Mn; DS-Co), phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) and chalcone synthase (CHS, EC 2.3.1.74) were monitored in the CM- and SM-cultured cells. PAL and CHS activities were found to increase significantly (P < 0.05) in the CM-cultured cells. CHS transcript levels were higher in the CM-cultured cells compared to transcript abundance in SM-cultured cells. There was no significant difference in the DS-Mn and DS-Co activities of cells grown in conditioned or synthetic media. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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