Free accessResearch articleFirst published online 2015-12
Effects of Adding Vindoline and MeJA on Production of Vincristine and Vinblastine,and Transcription of their Biosynthetic Genes in the Cultured CMCs of Catharanthus roseus
Vincristine and vinblastine were found by Liquid Chromatography-Mass Spectrometry (LC-MS) in Catharanthus roseus cambial meristem cells (CMCs) jointly treated with 0.25 mM vindolineand methyl jasmonate (MeJA), suggesting that C. roseus CMCs contain a complete set of the enzymes which are in response to convert vindoline into vincristine and vinblastine. Based on the facts that the transcript levels of vindoline-biosynthetic genes (STR, SGD and D4H) were up-regulated instead of being down-regulated by adding itself to the culture, and that the transcriptional factor ORCA3 was up-regulated simultaneously, we further confirmed that the transcription of STR, SGD, D4H was manipulated by ORCA3.
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