Nitrate Utilization by the Diatom Skeletonema costatum
- 1 December 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 62 (6), 991-994
- https://doi.org/10.1104/pp.62.6.991
Abstract
Nitrate utilization was characterized in N-deficient cells of the marine diatom S. costatum. To separate nitrate uptake from nitrate reduction, nitrate reductase activity was suppressed with tungstate. Neither nitrite nor the presence of amino acids in the external medium or darkness affects nitrate uptake kinetics. Ammonium strongly inhibits carrier-mediated nitrate uptake, without affecting diffusion transfer. A model is proposed for the uptake and assimilation of nitrate in S. costatum and their regulation by ammonium ions.This publication has 13 references indexed in Scilit:
- Nitrate Utilization by the Diatom Skeletonema costatumPlant Physiology, 1978
- Characterization of a membrane-bound nitrate reductase from Azotobacter chroococcumBiochemical and Biophysical Research Communications, 1977
- Ferredoxin-dependent photosynthetic reduction of nitrate and nitrite by particles of anacystis nidulansMolecular and Cellular Biochemistry, 1976
- Nitrate transport system in Neurospora crassa.1974
- Regulation of Nitrate Uptake in Penicillium chrysogenum by Ammonium IonPlant Physiology, 1973
- Regulation of the nitrate assimilation pathway in cultured tobacco cells: III. The nitrate uptake systemBiochimica et Biophysica Acta (BBA) - General Subjects, 1971
- The Effect of Tungstate on Nitrate Assimilation in Higher Plant TissuesPlant Physiology, 1969
- Enzyme Induction in Higher PlantsScience, 1969
- REDUCTION OF NITRATE AND NITRITE BY SUBCELLULAR PREPARATIONS OF ANABAENA CYLINDRICA II. REDUCTION OF NITRATE TO NITRITE1Plant and Cell Physiology, 1967
- The development of nitrate reductase in Chlorella and its repression by ammoniumArchiv für Mikrobiologie, 1963