GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    Electronic Resource
    Electronic Resource
    Die Rolle der Fimbrien bei der eigenartigen Sternbildung von Agrobacterium luteum (1968)
    Springer
    Archives of microbiology 63 (1968), S. 321-330 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Die bemerkenswerte Sternbildung von Agrobacterium luteum Stamm A61 (Moll et al., 1967; Ahrens, 1968) ist auf polare Fimbrien zurückzuführen, die um die Sternaggregate ausgebreitet sind. Es wird angenommen, daß sich Schwärmzellen an den Fimbrien verfangen und durch Kontraktion rasch zum Stern gezogen werden. Nach elektronenoptischen Präparaten sind die Fimbrien bis zu 10,5 μ lang und können die beobachtete Sternbildung gut erklären. Agrobacterium luteum Stamm B14 besitzt ebenfalls lange polare Fimbrien. Beide Stämme tragen peritriche Geißeln, deren Struktur sich deutlich von den dünnen und unregelmäßigen Fimbrien unterscheidet.
    Notes: Summary The remarkable way of star formation in Agrobacterium luteum strain A61 (Moll et al., 1967; Ahrens, 1968) was found to be due to polar fimbriae which are spread around the star-shaped aggregates. It is assumed that swarmers adhere to the fimbriae and, by contraction, are swiftly pulled towards the star. As seen in electron microscopic preparations, the fimbriae are up to 10,5 μ long and may well explain the star formation observed. Agrobacterium luteum strain B 14 also possesses long polar fimbriae. Both strains have peritrichous flagella, the structure of which being clearly distinct from the delicate and irregular fimbriae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00412119
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    facet.materialart.
    Unknown
    Degradation of p-nitrophenol by natural microbial communities from the estuary of the river Elbe (1991)
    Institut für Meereskunde
    Details
    Publication Date: 2022-06-03
    Description: The test compound p-nitrophenol during summer normally is rapidly degraded in the freshwater area of the Elbe river. In contrast, degradation of PNP is decreased significantly during periods of low temperature or low oxygen content. Thus the xenobiotic compound is carried to the North Sea. In estuarine and marine environments the degradation of PNP is diminished step by step towards the open sea and is finally ceased completely, mostly as a result of increasing salinity.
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - without review
  • 13
    facet.materialart.
    Unknown
    A synoptic survey on bacterial numbers, biomass and activity along the middle line of the Baltic Sea (1991)
    Institut für Meereskunde
    Details
    Publication Date: 2022-06-03
    Description: Between 28 August and 5 September 1982 thirty water samples (5 m depth) were taken on a transect between the Bothnian Bay and the Kiel Bight. Despite substantially differing hydrographical situations within the different subregions of the Baltic Sea, the total bacterial numbers showed a remarkable regional uniformity. Bacterial numbers fluctuated between 3 and 4 x 106 cells ml-1. A distinct pattern was observed: mean bacterial cell volumes were high in the Bothnian Bay (0.145 µm3) and low in the Gotland- and Bornholm Sea (0.094 and 0.091 µm3, respectively). The bacterial biomass fell in the range of 184 - 117 µg C 1-1. The activity parameters were somewhat more variable than bacterial numbers and biomass.
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - without review
  • 14
    facet.materialart.
    Unknown
    Factors influencing the acclimation period preceding the mineralization of organic chemicals by microbial communities (1991)
    Institut für Meereskunde
    Details
    Publication Date: 2022-06-13
    Description: An acclimated mixed culture of degrading bacteria and a degradable substance (4-Nitrophenol) were introduced into differently treated water samples. It could be shown that in all cases where an acclimated inoculum was used, degradation took place almost immediately compared to not acclimated cultures, where it took at least 10 days. The rate and extent of mineralization was influenced by low temperature, the presence of other organic nutrients and especially protozoan grazing. The data suggest that one of the main reasons for the acclimation period was the very small initial population of degrading bacteria. The role of other carbon sources is ambivalent. Low concentrations of organic chemicals which cannot sustain growth slow down acclimation and the degradation rate. Another important factor slowing down growth is grazing by protozoa, which can inhibit effective degradation.
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - without review
  • 15
    facet.materialart.
    Unknown
    The Use of Bacteriological Variables for the Characterization of Different Water Bodies (1994)
    Wiley
    In:  Internationale Revue der gesamten Hydrobiologie und Hydrographie, 79 (4). pp. 605-619.
    Details
    Publication Date: 2018-06-19
    Description: Studies on the Mediterranean Undercurrent in the Gulf of Cádiz showed that bacterial abundance and biomass as well as heterotrophic activity were higher in the water of Mediterranean origin in 500–800 m depth than in the adjacent Atlantic water. Upwelling processes off Mauretania and Portugal were accompanied by high bacterial numbers (bacterial plate counts) in the mixed surface layer. Changes in the qualitative composition of the bacterial flora in the waters off West Africa and in the Arabian Gulf were explained by the introduction of dust from desert regions into the sea by aeolian transport. In the Western Baltic migration of fish was detected by the presence of special bacteria, which normally live on or in these animals. Regions with complex hydrographic structures such as the Western and Central Baltic Sea revealed interesting relationships between bacteriological abundance and activity on the one hand and characteristic physical and chemical properties, such as origin, salinity and O2/H2S‐content, on the other. The importance of bacteriological variables for the characterization of different water bodies is discussed.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1002/iroh.19940790410
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 16
    facet.materialart.
    Unknown
    Ökologische Untersuchungen zur Nitrifikation in Nord-und Ostsee (1967)
    Biologische Anstalt Helgoland
    In:  Helgoländer Wissenschaftliche Meeresuntersuchungen, 15 (1-4). pp. 243-252.
    Details
    Publication Date: 2019-01-21
    Description: Ammonia, nitrite and nitrate were regularly estimated at several stations in the Kieler Bucht (western Baltic Sea) since November 1964. There are considerable seasonal changes in the contents of these 3 nitrogen compounds with impressive maxima of nitrite and nitrate in February or at the beginning of March. The great increase of nitrite and nitrate during the winter and also a smaller increase in summer are mainly caused by oxidation of ammonia, first to nitrite and then to nitrate, by nitrifying bacteria. In consequence chemoautotrophic nitrite- and nitratebacteria could be found in the water as well as in sediments all over the Kieler Bucht and also in the North Sea around the isle of Helgoland. These nitrifying bacteria are able to oxidize ammonia or nitrite in salinity conditions typical for the western Baltic Sea and the North Sea.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/BF01618627
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 17
    facet.materialart.
    Unknown
    Auswertung von bakteriologischen Untersuchungen bei zwei Stationen der Elbe oberhalb von Hamburg (1991)
    In:  Wasser und Abwasser, 35 . pp. 93-108.
    Details
    Publication Date: 2019-09-23
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - without review
  • 18
    facet.materialart.
    Unknown
    Mikrobiologie der Gewässer (1991)
    G. Fischer
    In:  G. Fischer, Jena u.a., 294 pp. 5. ISBN 3-334-00400-7
    Details
    Publication Date: 2014-05-14
    Type: Book , NonPeerReviewed
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Book
  • 19
    facet.materialart.
    Unknown
    Eutrophierung der Schlei - Vergangenheit und Gegenwart - (1994)
    Institut für Ökologie, Hiddensee
    In:  Bodden, 1 . pp. 31-49.
    Details
    Publication Date: 2018-08-17
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - without review
  • 20
    facet.materialart.
    Unknown
    Über einige sternbildende Bakterien aus der Ostsee (1967)
    Institut für Meereskunde
    Details
    Publication Date: 2022-04-21
    Description: Es werden vier sternbildende Bakterienstämme aus der westlichen Ostsee beschrieben und Beobachtungen über die Ausbildung der sternförmigen Zellaggregate mitgeteilt. Ein Stamm wird zu Agrobacterium stellulatum STAPP und KNÖSEL gestellt, die drei anderen werden als eigene Arten abgegrenzt und dafür die Namen Agrobacterium ferrugineum nov. spec., Agrobacterium luteum nov. spec. und Agrobacterium sanguineum nov. spec. vorgeschlagen. Four bacterial strains forming starlike aggregates were isolated from waters of the Western Baltic Sea. They were studied morphologically and physiologically, with special emphasis on the aggregate formation. A description of each strain is given. One belongs to Agrobacterium stellulatum STAPP and KNÖSEL. For three further strains the following names are proposed: Agrobacterium ferrugineum nov. spec., Agrobacterium luteum nov. spec. and Agrobacterium sanguineum nov. spec.
    Type: Article , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - without review
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...