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Cyanocatena

Generic name: CYANOCATENA Hindák, 1975. Arch. Hydrobiol., Suppl. 46: 334.
Synonyms:
Diagnosis:
Type species:Cyanocatena planctonica Hindák 1975.
Descriptions:
Komárek & Anagnostidis (1998): Colonies free floating with cells irregularly arranged in very fine slime, microscopic, irregular, with varying number of cells; in young colonies cells sometimes are arranged in irregular rows. Mucilage structureless, colourless, diffluent at the margin; cells without their own gelatinous envelopes, but often with brownish or blackish rings (ferric precipitates). Cells cylindrical, elongate with rounded ends, sometimes slightly arcuate.
Komárek (1992): Unicellular-colonial; colonies free-floating, always microscopic, irregular in outline, with few or many freely, irregularly arranged cells, enveloped by very fine, indistinct, diffluent, colourless, wide mucilage, sometimes visible only after staining. Cells pale blue-green or pale grey, without gas vesicles, almost spherical up to cylindrical, straight or slightly arcuated, widely rounded at ends, with circular, blackish ferric precipitations on the cell surface and between cells; precipitations arise often at the place of cell division and remain sometimes free within common mucilage.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek & Anagnostidis (1998):Cells divide by binary fission in one plane in successive generations, transversely to the longitudinal
axis, often where the ring-like precipitations are located. Reproduction by disintegration of colonies. Monospecific genus.
Komárek (1992):Cell division by binary fission, perpendicularly to the longer cell axis. After division remain daughter cells sometimes connected
for a short time (with remaining iron-oxid precipitates}, later separate one from another. Reproduction by the disintegration of colonies.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Chroococcales, Synechococcaceae, Aphanothecoideae
Notes to taxonomy, misinterpretations:Monotypic genus.
Ecology, ecophysiology, ecological significance:
Komárek (1992): Planktic in eutrophic water bodies, known from the central Europe (Austria, Czechoslovakia, Germany). Very similar to some
Cyanodictyon species (cf. Cyanodictyon imperfectum).
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Cyanocatena bicudoi Ramirez 1996
Cyanocatena imperfecta (Cronberg et Weibull) Joosten 2006
Cyanocatena planctonica Hindák 1975
Cyanocatena verucosa Hindák 2002

Unclear taxa:
Keys:
List of stains:
Drawings:
Komárek (1992)
Application technology:
Literature:

  2.1 taxonomy: Hindák 1975, Heynig 1979, Hindák 1982, Hindák 1983, Komárek 1992, Komárek & Anagnostidis
1998
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: