Nitrate-reductase activity and in vivo nitrate-reduction rate in Ulva rigida illuminated by blue light
作者： A. Corzo , F. X. Niell
DOI: 10.1007/BF00381937
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摘要: In the marine green alga Ulva rigida C. Agardh, nitrate reductase (NR) is synergetically induced by blue light and nitrate. The present study examines the effect of blue light and a large NO 3− pulse (0.3 m M) on relevant variables of NO 3−-assimilation such as NO 3−-uptake, intracellular NO 3−-storage, NR activity, in vivo NO 3−-reduction rate and NO 2− and NH 4+-accumulation. Nitrate uptake started immediately upon addition of NO 3−, suggesting the presence of a constitutive carrier, however in the first 1.5 to 2 h, periods of net NO 3 …
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