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  • 1
    Call number: SR 94.0399(46)
    In: Mitteilungen der Abteilung für Geologie und Paläontologie am Landesmuseum Joanneum
    Type of Medium: Series available for loan
    Pages: 79 S. + 1 Kt.-Beil.
    Series Statement: Mitteilungen der Abteilung für Geologie, Paläontologie und Bergbau am Landesmuseum Joanneum 46
    Language: German
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of medicinal chemistry 8 (1965), S. 260-263 
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Zoomorphology 58 (1967), S. 381-395 
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary The two infusorian Suctoria Discophrya speciosa Lachmann and D. guilcherae Matthes, which live on various Hydrophilidae, contain numerous bacteria in their endoplasm. The gram-negative bacteria frequently arrange themselves in pairs with their free ends, in the majority of cases, tapered to points. They grow on the surface of the gelatinous culture medium as round shiny colonies which have an intense yellow color. An extreme formation of slime also occurs. The rods which are liberated from the host directly are non-motile while the cultivated bacteria show peritrich flagellation and motility. Two strains were selected from an abundance of material (A 1=D. speciosa and A 2=D. guilcherae) and they showed size differences; however, they were completely identical in their biochemical behavior. The identical bacteria belong to the genus Flavobacterium. We have named the new organism Flavobacterium buchneri n. sp. The obligate character of the infection forces us to assume that a symbiotic relationship exists between the partners. Unfortunately, the biochemical findings give no indication for the motive of the symbiosis. One probably has to look for the reason in the sphere of nutrition physiology. Since D. speciosa and D. guilcherae are closely related one may assume that their primitive ancestor already had a symbiotic relationship with our Flavobacterium. By the preceding we mean that the first infection takes place or occurs when the infusorian Suctoria suck the plasma and bacteria from the prey. The continuation of the symbiosis in the progeny is inevitably guaranted through the method of budding.
    Notes: Zusammenfassung Die beiden auf verschiedenen Hydrophiliden lebenden Sauginfusorien Discophrya speciosa Lachmann und D. guilcherae Matthes beherbergen in ihrem Endoplasma zahllose Bakterien. Die gram-negativen Keime sind häufig paarweise aneinandergelagert und an ihren freien Enden zumeist zugespitzt. Auf der Oberfläche gallertiger Nährböden wachsen sie als runde, glänzende Kolonien von intensiv gelber Farbe. Auch extreme Schleimbildung tritt auf. Während die aus den Wirten direkt freigesetzten Stäbchen unbeweglich sind, zeigen die kultivierten Keime peritriche Begeißelung und Beweglichkeit. Aus dem reichen Material wurden zwei Stämme ausgewählt (A 1=D. speciosa, A 2=D. guilcherae), die zwar Größendifferenzen zeigen, aber in ihren biochemischen Leistungen (Bunte Reihe) völlig übereinstimmen. Die identischen Keime gehören dem. Genus Flavobacterium an. Wir nennen den neuen Organismus Flavobacterium buchneri n. sp. Der obligate Charakter der Besiedlung zwingt zur Annahme eines symbiontischen Verhältnisses zwischen den Partnern. Die biochemischen Befunde geben leider keinen Hinweis für das Motiv der Symbiose. Es ist wohl im ernährungsphysiologischen Bereich zu suchen. Da D. speciosa und D. guilcherae eng miteinander verwandt sind, darf man annehmen, daß bereits ihre Stammform mit unserem Flavobacterium in Symbiose lebte. Bei deren Erstbesiedlung müssen die Keime mit dem Beuteplasma in das räuberische Sauginfusor gelangt sein. Die Weitergabe der Symbionten an die Nachkommenschaft ist durch den Knospungsmodus zwangsläufig gewährleistet.
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 1965-03-01
    Print ISSN: 0022-2623
    Electronic ISSN: 1520-4804
    Topics: Chemistry and Pharmacology , Medicine
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