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Tobacco plants that lack expression of functional nitrate reductase in roots show changes in growth rates and metabolite accumulation
2001
Journal of Experimental Botany
When tobacco is provided with a high nitrate supply, only a small amount of the nitrate taken up by the roots is immediately assimilated inside the roots, while the majority is transported to the leaves where it is reduced to ammonium. To elucidate the importance of root nitrate assimilation, tobacco plants have been engineered that showed no detectable nitrate reductase activity in the roots. These plants expressed the nitrate reductase structural gene nia2 under control of the leaf-specific
doi:10.1093/jexbot/52.359.1251
pmid:11432943
fatcat:xbp3usbaj5hbbdabolghsujjgm