Abstract
In higher plants, recent advances in plant molecular genetics, combined with modern physiological and biochemical studies, have expanded our understanding of the regulatory mechanisms controlling the primary steps of inorganic nitrogen assimilation and the subsequent biochemical pathways involved in nitrogen supply and recycling for higher plant metabolism, growth and development. In this presentation, we describe improvements in our understanding of the molecular controls of nitrogen assimilation through the use of transgenic plants and the study of genetic variability in model and crop species. To illustrate this research programme, the physiological impact of modified gene expression, using either transgenic plants or different genotypes, was studied using 15N-labelling experiments in order to monitor the influx of nitrate or ammonia and its subsequent incorporation into amino acids.
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Hirel, B., Limami, A.M. Prospects for improving nitrogen use efficiency: Insights given by 15N-labelling experiments. Phytochemistry Reviews 2, 133–144 (2003). https://doi.org/10.1023/B:PHYT.0000004186.60917.d4
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DOI: https://doi.org/10.1023/B:PHYT.0000004186.60917.d4