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  • 1
    Electronic Resource
    Electronic Resource
    3-Amino-3-deoxy-D-glucose: an antibiotic produced by a deep-sea bacterium (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 464-465 
    Details
    ISSN: 1420-9071
    Keywords: Deep-sea bacteria ; gram-positive ; antimicrobial activity ; Bacillus ; 3-amino-3-deoxy-D-glucose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Gram-positive bacteria isolated from deep-sea sediments of the Pacific basin showed considerable antibacterial activity. ABacillus strain, isolated from a sediment sample collected at a depth of 4310 m, was shown to produce 3-amino-3-deoxy-D-glucose, a known antibiotic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01940457
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  • 2
    Electronic Resource
    Electronic Resource
    Deoxyribonuclease activity in seawater and sediment (1973)
    Springer
    Marine biology 20 (1973), S. 58-63 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract This paper describes a fluorometric method for assaying deoxyribonuclease (DNase) activity in natural seawater and sediment. DNase activity was detected in a sea-water sample taken from Tokyo Bay (Japan), and in various sediment samples taken from Suruga, Sagami and Tokyo Bays, and from Aburatsubo Inlet. Much more DNase occurred in seawater in a state bound to suspended particles or microbial cells than dissolved free in seawater. Although viable DNA-hydrolyzing bacteria were found to be widely distributed in seawater and sediment, poor correlation existed between the bacterial population and the intensity of DNase activity in the sediments examined. In addition, intensities of DNase activity in various surface sediments had no apparent correlation with the DNA contents and the sediment types. However, a close correspondence was found between the vertical variation of DNase activities and the gradient of DNA contents and of Eh in the core sediment at Aburatsubo Inlet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00387675
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  • 3
    Electronic Resource
    Electronic Resource
    Phosphatase activity in Eutrophic Tokyo Bay (1978)
    Springer
    Marine biology 49 (1978), S. 223-229 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Alkaline phosphatase activity in seawater samples taken from Tokyo Bay was measured by both spectrophotometric and fluorometric methods. A stratified distribution pattern of the enzyme was observed in August, a vertically mixed pattern in December. The distribution of phosphatase activity in the eutrophic seawater was paralleled by variations in other parameters, such as viable counts of bacteria, chlorophyll a content, inorganic and total phosphorus concentrations, amounts of seston, particulate deoxyribonucleic acids (DNA) and protein. A significant correlation between phosphatase activity and these measurements indicated that the enzyme was a good indicator of the degree of eutrophication. The positive relationship between phosphatase and inorganic phosphorus indicates that enzyme activity was not inhibited at inorganic phosphorus levels present in the bay and that production of phosphatase by microorganisms inhabiting the bay was not repressed at the inorganic phosphorus levels in the bay. Culture experiments revealed that the formation of repressible phosphatase by bacteria isolated from the bay was not affected by the inorganic phosphorus levels in the bay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391134
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  • 4
    Electronic Resource
    Electronic Resource
    Change in a bacterial population during the process of degradation of a phytoplankton bloom in a brackish lake (1983)
    Springer
    Marine biology 76 (1983), S. 253-255 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Change in a bacterial population during the process of degradation of a phytoplankton bloom was investigated at Lake Hamana, Japan in June 1981. The predominant phytoplankton were Prorocentrum micans Ehrenberg and P. triestinum Schiller. While most phytoplankton cells were living and moving actively, most bacteria were those in a free-living state (free-living bacteria) and the number of bacteria associated with particulate materials (attached bacteria) was less than a few percent of the total bacterial number. As the decline process proceeded, the number of free-living bacteria remained almost constant or decreased slightly; on the other hand, the number of attached bacteria increased gradually and reached about 40% of the total bacterial number. These results indicate that some of the free-living bacteria become attached to particulate organic matter and grow on the surface of the particles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00393025
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  • 5
    Electronic Resource
    Electronic Resource
    Distribution of lipopolysaccharide, an indicator of bacterial biomass, in subtropical areas of the sea (1983)
    Springer
    Marine biology 76 (1983), S. 257-262 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Lipopolysaccharide (LPS) concentrations, an indicator of bacterial biomass, were determined in the South China Sea and the Pacific Ocean. The distribution patterns of LPS were compared with those of chlorophyll a (Chl a), zooplankton biomass and the concentrations of several nutrients. LPS and total bacterial numbers in seawater were correlated with each other with a correlation coefficient (r) of 0.84 at Stations 7, 8 and 10. Diurnal fluctuation of LPS was negligible, but Chl a varied slightly in the vertical water column. Zooplankton stayed at a depth of around 400 m during the daytime and ascended quickly to the surface (0–50 m) early in the evening. The profiles of LPS and Chl a were negatively correlated to each other in the water layers above the Chl a maximum peak (r=-0.74; excluding the samples from 75 m at Station 7 and 10 m at Station 11 due to inadequate data for the statistical analysis). LPS and zooplankton biomass during the night-time, in contrast, paralleled each other at 5 stations surveyed (r=0.71). The presence of zooplankton resulted in an increase in bacterial numbers in the seawater in vitro. Based on these results, the factors controlling the occurrence and abundance of bacteria and phyto- and zooplankton in the pelagic sea are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00393026
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  • 6
    Electronic Resource
    Electronic Resource
    Utilization of dissolved amino acids in seawater by marine bacteria (1982)
    Springer
    Marine biology 68 (1982), S. 31-36 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Utilization of dissolved free and combined amino acids (DFAA and DCAA) by two types of bacterial isolates in artificial seawater was investigated. One type of isolate had proteolytic activity and the other did not. Both types of isolates utilized DFAA in artifical seawater, but there was some selectivity of amino acids and a certain threshold concentration below which DFAA was no longer utilized. The bacterial isolate which had proteolytic activity utilized asein in artificial seawater, and the amount of DFAA did not increase. During incubation the composition of DFAA changed significantly, while that of DCAA did not change markedly. It is suggested that marine bacteria utilize not only DFAA but also labile DCAA rapidly when it is added to seawater and they play an important role in determining the concentration and composition of dissolved amino acids in the marine ecosystem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00393138
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  • 7
    Electronic Resource
    Electronic Resource
    The synthesis of 3-spirooxindole derivatives. Total syntheses of dl-formosanine, dl-isoformosanine, dl-mitraphylline and dl-isomitraphylline
    Amsterdam : Elsevier
    Tetrahedron Letters 15 (1974), S. 187-190 
    Details
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0040-4039(01)82169-9
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  • 8
    Electronic Resource
    Electronic Resource
    Fluctuation of deoxyribonuclease activity from late spring to autumn in Tokyo Bay (1981)
    Springer
    Hydrobiologia 76 (1981), S. 49-55 
    Details
    ISSN: 1573-5117
    Keywords: DNase activity in coastal seawater
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Deoxyribonuclease (DNase) activity in seawater of Tokyo Bay was determined during 1972 and 1973. The activity was dependent on substrate (deoxyribonucleic acid) concentration within the range from o to io mg/l. During the summer the activity was high in the inner part of the bay and decreased on approaching the mouth of the bay. The intensity of activity was very high compared with the standing crop of particulate deoxyribonucleic acid (DNA) and this high activity corresponded with rapid decrease of the amount of nucleic acid with increasing depth in the water columns in the bay. During the investigation carried out in 1972 the activity fluctuated, being weak in May and November and high during the summer months. The profiles for activity did not coincide with those for chlorophyll-a, particulate DNA and seston, except in September. These non-parallel relations are discussed in terms of the distribution patterns of phytoplankton and bacteria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00014033
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  • 9
    Electronic Resource
    Electronic Resource
    Biological oceanography (1971)
    Springer
    Journal of oceanography 27 (1971), S. 275-286 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02109746
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    Paper (German National Licenses)
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