Morphotype V of theBlastocaulis-Planctomyces group of budding and appendaged bacteria:Planctomyces guttaeformis Hortobágyi (sensu Hajdu)

  title={Morphotype V of theBlastocaulis-Planctomyces group of budding and appendaged bacteria:Planctomyces guttaeformis Hortob{\'a}gyi (sensu Hajdu)},
  author={J. Schmidt and M. Starr},
  journal={Current Microbiology},
The ultrastructure of a budding and appendaged bacterium resemblingPlanctomyces guttaeformis Hortobágyi (sensu Hajdu) was examined by transmission electron microscopy in negative-contrast and thin-section preparations from samples of pond and lake water in which natural blooms of this organism had occurred. Its prokaryotic nature was established, and observations were reported regarding its characteristic bulbiform or bulbose cell shape (cylindrical with one globose or swollen end), budding… Expand

Figures from this paper

Life cycle of a budding and appendaged bacterium belonging to morphotype IV of theBlastocaulis-Planctomyces group
Transmission electron microscopy was employed to determine ultrastructural details regarding the single ensheathed flagellum, the polarly distributed crateriform structures and numerous pili, the excreted holdfast, the multifibrillar major appendage (a fascicle), and daughter cell (bud) formation. Expand
Manganese and iron encrustations and other features ofPlanctomyces crassus Hortobágyi 1965, morphotype Ib of theBlastocaulis-Planctomyces group of budding and appendaged bacteria, examined by electron microscopy and X-ray micro-analysis
Water samples collected in August, 1980, from a pond in Budapest, Hungary, have permitted transmission and scanning electron microscopic observations to be made ofPlanctomyces crassus HortobágyiExpand
Corniculate Cell surface protrusions in morphotype II of theBlastocaulis-Planctomyces group of budding and appendaged bacteria
Natural water samples and dilute-peptone enrichment cultures, containing budding and appendaged bacteria assigned to morphotype II of the Blastocaulis-Planctomyces group of nonprosthecately stalked prokaryotes, have been examined by transmission electron microscopy, finding unusual corniculate structures that protruded at seemingly the same loci. Expand
Some ultrastructural features ofPlanctomyces bekefii, morphotype I of theBlastocaulis-Planctomyces group of budding and appendaged bacteria
The ultrastructure ofPlanctomyces bekefii, a budding and appendaged bacterium, has been examined using samples obtained directly from pond water, its natural habitat, and its major appendage, the nonprosthecate stalk, is shown to have a tubular structure, with a substructure of hollow fibers. Expand
Metallic-Oxide encrustations of the nonprosthecate stalks of naturally occurring populations ofPlanctomyces bekefii
Naturally occurring metallic-oxide encrustations of the multifibrillar stalks of morphotype Ia of the Blastocaulis-Planctomyces group of budding and nonprosthecately appendaged prokaryotes from two sources-a pond in Budapest, Hungary and Gebharts Teich, a fishpond in Austria-are examined by energy-dispersive X-ray spectroscopy. Expand
History, Classification and Cultivation of the Planctomycetes
The history of the planctomycetes is traced from their initial discovery as planktonic microcolonies in lake water, to their recognition as an evolutionarily diverse phylum encompassing three classes with a vast array of unique and unusual features. Expand
Current sightings, at the respective type localities and elsewhere, ofPlanctomyces bekefii Gimesi 1924 andBlastocaulis sphaerica Henrici and Johnson 1935
AlthoughPlanctomyces bekefii was originally described as a fungus, both organisms are seen by transmission electron microscopy to be budding and nonprosthecately appendaged prokaryotes, insofar as identity can be demonstrated for such presently noncultivable bacteria solely by microscopic observations. Expand
Antibiotic susceptibility of marine Planctomycetes
It was showed that antibiotics which target protein synthesis or DNA replication, with the exception of aminoglycosides, were the most effective against the tested strains, and the highest efficacy was observed for chloramphenicol, clindamycin and ciprofloxacin. Expand
Phylum XXV. Planctomycetes Garrity and Holt 2001, 137 emend. Ward (this volume)
The phylum Planctomycetes was circumscribed for this volume on the basis of phylogenetic analysis of 16S rRNA gene sequences; the phylum contains the class Planctomycetia.


Morphological diversity of freshwater bacteria belonging to theBlastocaulis-planctomyces group as observed in natural populations and enrichments
The nonprosthecate, stalked, budding, aquatic bacteria presently thought to belong to theBlastocaulis-Planctomyces group are morphologically quite diverse—as can be seen in high resolutionExpand
Isolation and ultrastructure of freshwater strains ofPlanctomyces
Four strains of a freshwaterPlanctomyces species—different in a number of respects from those hitherto described—have been isolated and their morphology and ultrastructure examined by transmissionExpand
L-Forms of Pseudomonas aeruginosa
L-forms of a strain of Pseudomonas aeruginosa were produced by serial subculture of the bacterial form on agar medium containing sucrose as an osmotic stabilizer and carbenicillin. L-forms eventuallyExpand
Observations on the bacterium species Planctomyces guttaeJbrmis Hortob. (Caulobacteriales). Archiv for Hydrobiologie 74:172-185
  • 1974
Neue Planctomyces-Arten.] Botanikai Krzlemenyek. 52:111-115. [In Hungarian, with German rrsume
  • 1965
New aquatic budding and prosthecate bacteria and their taxonomic position
  • 1977
New aquatic budding and prosthecate bacteria and their taxonomic position, pp. 107-133
  • 1977
Genus Planctomyces, pp. 162-163
  • Bergey's manual of determinative bacteriology,
  • 1974
Observations on the bacterium species Planc - tomyces guttaeJbrmis Hortob . ( Caulobacteriales )
  • Archiv for Hydrobiologie
  • 1974
Electron microscope examinations made on microorganisms offishponds
  • Mikroskopie . Zentralblatt ftir Mikroskopische Forschung und Methodik
  • 1973