Home

Cuspidothrix

Generic name: CUSPIDOTHRIX Rajaniemi, Komárek, Willame, Hrouzek, Kaštovská, Hoffmann et Sivonen, 2005. Arch. Hydrobiol./Algol. Stud. 117: 388
Synonyms:
Diagnosis:
Rajaniemi et al. (2005): Trichomata libere natantia, brevia vel longa, recta vel circinata, cylindrica, leve constricta vel non-constricta ad septa, ad 6 um lata, ad apices clare acuta. Cellulae cylindraceae, protoplasmate subtiliter granulari et aerotopis facultative impletis; cellulae apicales
elongatae, attenuatae et acuminatae, plerumque hyalinae. Heterocytae inter-calares, solitariae, cylindraceae ad ellipticae. Akinetes intercalares, solitariae vel rare bi-nae, elongatae, ab heterocytis remotae vel confines. - Planktice in aquis.
Type species: Cuspidothrix issatschenkoi (Usačev) Rajaniemi et al. 2005
Descriptions:
Rajaniemi et al. (2005): Trichomes free-floating, solitary, short or long, straight or coiled, cylindrical, slightly constricted or non-constricted at cross walls, up to 6 |am wide, clearly narrowed and pointed at the ends. Cells cylindrical, cell content finely granular and/or with facultative
aerotopes; apical cells elongated, attenuated and acuminate, mainly colourless (hyaline). Heterocytes only intercalary, solitary, cylindrical or elliptical. Akinetes intercalary, solitary or rarely in twos, elongated ± cylindrical, distant from or aside heterocytes.
Genotype differences, molecular data:
Cuspidothrix, Rajaniemi et al. 2005 Rajaniemi 2005 Rajaniemi et al. (2005)
Reproduction strategies, life cycles, cell division:
Ultrastructure:
Taxonomic position, higher hierarchy: Nostochophydideae, Nostocales, Nostocaceae
Ecology, ecophysiology, ecological significance:
Rajaniemi et al. (2005): Planktic in stagnant freshwater, rarely (secondary) in running waters.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
0TU37S7 (Collection Univ. of Helsinki, Viikki Biocenter)
Infrageneric scheme, species concept:
List of species:
Cuspidothrix capricornii (Cronberg et Komárek) Rajaniemi et al. 2005
Cuspidothrix elenkinii (Kiselev) Rajaniemi et al. 2005
Cuspidothrix issatschenkoi (Usačev) Rajaniemi et al. 2005
Cuspidothrix tropicalis (Horecká et Komárek) Rajaniemi et al. 2005
Cuspidothrix ussatschevii (Proškina-Lavrenko et Makarova) Rajaniemi et al. 2005

Unclear taxa:
Anabaena sp., strain 277 (Collection Univ. of Helsinki, Viikki Biocenter)
Anabaena sp., strain 1TU34S7 (Collection Univ. of Helsinki, Viikki Biocenter)
Keys:
List of stains:
Drawings:
Rajaniemi 2005 Rajaniemi 2005 Rajaniemi et al. (2005)
Application technology:
Literature:

  2.1 taxonomy: Rajaniemi et al. 2005
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: