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Spectral Dependence of Photoregulation of Inorganic Nitrogen Metabolism in Chlamydomonas reinhardii

, : Spectral Dependence of Photoregulation of Inorganic Nitrogen Metabolism in Chlamydomonas reinhardii. Plant Physiology 77(1): 95-98

The utilization of NO(3) (-) by green algae growing photoautotrophically under air, which are growth conditions close to their more habitual situations in nature, is associated with the excretion of NO(2) (-) and NH(4) (+) to the culture medium. The entire process is promoted by blue light and depends on photosynthetically active radiation for the required reducing equivalents. The stimulation of NO(3) (-) utilization and of its associated NO(2) (-) and NH(4) (+) excretions saturated at very low quantum fluxes of blue light (15 microequivalents per square meter per second) in Chlamydomonas reinhardii cells sparged with CO(2)-free air and irradiated with 50 microequivalents per square meter per second background red light. The wavelength dependence data of this stimulation correlated closely with the in situ photoactivation of nitrate reductase and also with the light induced increase in its biosynthesis and/or assembly.These results indicate that the photoregulation of inorganic N metabolism in C. reinhardii is mainly due to the blue light modulation of nitrate reductase. Although flavins are the most suitable candidates to act as physiological photoreceptors, the wavelength dependence data only show a major peak in the blue region between 400 and 500 nanometers.

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Accession: 050358698

PMID: 16664036

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Sands, Dpa; Chan, Rr, 1996: Survivorship of Australian Othreis fullonia on Erythrina variegatta: hypotheses for development of host-plant biotypes in the Pacific. Entomologia experimentalis et applicata 80(1): 145-148

Korff J.M.; Jarabak J., 1981: An nadp linked prostacyclin dehydrogenase in rabbit kidney. An NADP-linked 15-hydroxyprostaglandin dehydrogenase specific for prostacyclin was purified 1300-fold from rabbit kidney. Prostaglandins[PG]E2, F2.alpha. and 6-keto-PGF1.alpha. and thromboxane B2 were oxidized by the purified enzyme with rates of...

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Petr, T., 1983: Aquatic pollution in the Purari basin. Monographiae biologicae1(51): 325-339

Heller, M. I.; Croot, P. L., 2010: Kinetics of superoxide reactions with dissolved organic matter in tropical Atlantic surface waters near Cape Verde TENATSO. The decay kinetics of superoxide (O2(-) ) reacting with organic matter was examined in oligotrophic waters at, and nearby, the TENATSO ocean observatory adjacent to the Cape Verde archipelago. Superoxide is the short-lived primary photochemical pr...

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Katz, R.L., 1972: Sedatives and tranquilizers. A lytic bacteriophage isolated from sewage was found to attack strains of Aerobacter aerogenes, Escherichia coli, and Klebsiella pneumoniae, but not members of the genera Salmonella, Proteus, and Serratia. The phage, designated phimp, contained de...

Lecerf F.; Nguyen B L.; Pasqualini J.R., 1988: Biological effects and ultrastructural alterations of cis tamoxifen n demethyltamoxifen and 4 hydroxytamoxifen in the uterus and vagina of newborn guinea pigs. The biological and morphological effects of cis-tamoxifen, N-desmethyltamoxifen and 4-hydroxytamoxifen, administered sc alone (100 .mu.g/animal) or combined with estradiol (20 .mu.g/animal) were studied in the uterus and vagina of the guinea pig....

Liu, A.N., 1981: Metastatic carcinoma of choroid. Chinese Journal of Ophthalmology 17(5): 274-276

Verosub Kenneth L.; Fine Pinchas; Singer Michael J.; TenPas Jeff, 1994: Pedogenesis and paleoclimate; interpretation of the magnetic susceptibility record of Chinese loess-Paleosol sequences: Reply. Geology (Boulder) 22(9): 859-860