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  • Organic Chemistry  (3)
  • nitrate reductase  (2)
  • 40KD; 44KD; Atomic absorption spectrometry (AAS); Beryllium-10; Beryllium-10, standard deviation; Beryllium-9; Beryllium-9, standard deviation; Deposit type; DEPTH, sediment/rock; Distance; Distance, maximum; Distance, minimum; Dredge, box; DRG_B; Elevation of event; Event label; Geochemistry; Identification; Latitude of event; Longitude of event; manganese micronodule; manganese nodule; Mass spectrometry; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; sediment; SO23/2; SO23/2_40KD; SO23/2_44KD; Sonne; Zulu Sea  (1)
  • Auxotrophs  (1)
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  • 1
    facet.materialart.
    Unknown
    10Be and 9Be isotopes composition of Mn nodule 44 TKD and Mn crust 40 TKD retrieved in the South China sea during expedition SO23/2 (R/V Sonne) (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: During the campaign SO23/2 (R/V Sonne) in the South China sea various manganese deposits were retrieved by dredging. Two representative samples were selected for chemical analysis: one Mn crust (0.4 cm thick) attached to a vesicular olivine basalt fragment for station 40KD and one irregular spheroidal shaped Mn nodule with rough surface and a Miocene chalk core for station 44KD. Their chemical composition was determined by X-ray fluorescence analysis on the grounded bulk sample.
    Keywords: 40KD; 44KD; Atomic absorption spectrometry (AAS); Beryllium-10; Beryllium-10, standard deviation; Beryllium-9; Beryllium-9, standard deviation; Deposit type; DEPTH, sediment/rock; Distance; Distance, maximum; Distance, minimum; Dredge, box; DRG_B; Elevation of event; Event label; Geochemistry; Identification; Latitude of event; Longitude of event; manganese micronodule; manganese nodule; Mass spectrometry; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; sediment; SO23/2; SO23/2_40KD; SO23/2_44KD; Sonne; Zulu Sea
    Type: Dataset
    Format: text/tab-separated-values, 253 data points
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    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Regulation of sulfate assimilation by amino acids in Lemna minor L.
    Amsterdam : Elsevier
    Plant Science 44 (1986), S. 125-132 
    Details
    ISSN: 0168-9452
    Keywords: ATP sulfurylase ; adenosine 5'-phosphosulfate sulfotransferase ; amino acids ; nitrate reductase ; sulfate assimilation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-9452(86)90081-6
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Uptake and assimilation of atmospheric NO2 — N by spruce needles (Picea abies): A field study (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 1497-1502 
    Details
    ISSN: 1573-2932
    Keywords: NO2 ; dry deposition ; gas exchange ; picea abies ; spruce forests ; nitrate reductase ; nitrogen assimilation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract NO2 enters spruce needles by gas exchange through the slomata. Nitrate formed from NO2 is reduced in the cytosol by nitrate reductase (NR), the rate limiting enzyme of the nitrogen assimilatory pathway. A linear relationship was found between the nitrate reductase activity (NRA), NO2 concentration and the amount of N incorporated into amino acids and proteins, so that NRA was suggested as an estimate of NO2-uptake. In the present field study, 50 spruce trees (Picea abies) have been selected, which grow in a natural habitat in a NO2 concentration gradient in a forest crossed by a highway which is a major NO source. At part of the sites, the microclimatic conditions have been recorded, so that common models of local gas exchange of the needles could be used to estimate stomatal uptake of NO2. NRA was investigated as a function of radiation and stomatal uptake on the day before needle sampling. Close to the highway NRA was permanently elevated with a maximum in summer. As with the laboratory results, a linear relationship between stomatal uptake and NRA was found. Total N — content of current year shoots was not affected by the additional N-source provided by airborne NO2. The present study shows that the gas exchange models are consistent with the physiological reactions of spruce needles on a local level and therefore contribute to the validation of calculations of NO2 dry deposition to spruce forests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00477193
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  • 4
    Electronic Resource
    Electronic Resource
    The development of a negative selection system for the isolation of plant temperature-sensitive auxin auxotrophs (1988)
    Springer
    Theoretical and applied genetics 75 (1988), S. 869-874 
    Details
    ISSN: 1432-2242
    Keywords: Auxin ; Auxotrophs ; BUdR ; Enrichment ; Temperature sensitivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A protocol has been developed for the negative selection of plant auxotrophs using the nucleoside analogues BUdR and FUdR. The protocol was optimised using nitrogen-starved protoplast-derived cells of Nicotiana plumbaginifolia to simulate auxotrophy. The present results represent a significant improvement over previous reports in that: 1) The background of colonies escaping BUdR/FUdR kill is low and reproducible. 2) The protocol was improved to the point where background survival was 0.03% for non-starved cultures and 0.09% for auxin-starved cultures. 3) It was shown that UV irradiation decreases BUdR sensitivity of dividing cells and that this is overcome by increased exposure to BUdR. 4) Application of the method to auxin-starved haploid protoplast-derived cell suspensions resulted, for the first time, in the selection of temperature-sensitive (ts) auxin auxotrophs. 5) It could be demonstrated, for the first time, that the method in practice enriches for auxotrophs, in this case by a factor of 10 for auxin auxotrophs and at least 60 for ts auxin auxotrophs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00258047
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  • 5
    Electronic Resource
    Electronic Resource
    Die Reduktion von α-Aminocarbonsäureestern zu Aminoalkoholen mittels Lithiumaluminiumhydrid (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1617-1623 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reduktion mit Lithiumaluminiumhydrid wurde aus den entsprechenden Estern von α-Aminocarbonsäuren die folgenden Aminoalkohole dargestellt: D, L-Phenylalaninol, L(-)-Phenylalaninol, L(-)-Tyrosinol, L(+)-Alaninol, L(+)-Leucinol, L,(+)-2-Oxymethylpyrrolidin (L(+)-Prolinol), L(+)-2-Aminobutandiol-(1,4) (L(+)-Asparaginol), D, L-2-Aminobutandiol-(1,4) (D, L-Asparaginol) und 2-Amino-propandiol-( 1,3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310624
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  • 6
    Electronic Resource
    Electronic Resource
    L-Histidinol (1949)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 32 (1949), S. 1936-1938 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reduktion von Dibenzoyl-L-histidinmethylester mit LiAlH4 wurden Monobenzoyl-L-histidinol und aus letzterem durch Verseifung L-Histidinol hergestellt. Letztere Verbindung zeigt ähnliche pharmakologische Wirkung wie Histamin, aber erst in 1000-3000 mal höherer Dosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19490320619
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  • 7
    Electronic Resource
    Electronic Resource
    L-Valinol und L-Tyrosinol (1949)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 32 (1949), S. 1156-1157 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reduktion mit Lithiumaluminiumhydrid wurden aus L-Valin-methylester L-Valinol und aus L-Tyrosin-methylester L-Tyrosinol in guten Ausbeuten hergestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19490320374
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