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Nitrogen assimilation in the callus of an angiosperm holoparasitic plant, Cuscuta reflexa, has been investigated by studying the level of key enzymes of the nitrogen assimilation pathway, namely nitrate reductase (NR), glutamine synthetase (GS), glutamate synthase (GOGAT) and glutamate dehydrogenase (GDH), during its growth in the absence and presence of NAA. The activity of all these enzymes in culture...
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