Jaaginema
| Generic name: JAAGINEMA Anagnostidis et Komárek, 1988. Algolog. Stud. 50-53: 395. | ||||||||||
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| Diagnosis: | ||||||||||
| Type species:Jaaginema subtilissimum (Kutzing ex De Toni) Anagnostidis et Komárek 1988 | ||||||||||
| Descriptions: Komárek (1992): Filamentous; filaments usually solitary or freely clustered (tangled and coiled) into small colonies, rarely forming macroscopically visible mats; trichomes always without sheaths, cylindrical, isopolar, usually wawed or coiled, narrow, thin, 0.5-3 μm wide, uniseriate, usually not narrowed to the ends, slightly constricted or unconstricted at the cross walls, always immotile. Cells cylindrical, elongated, longer than wide (up to several times), without aerotopes, sometimes with solitary granules (rarely at the cross walls); end cells rounded_or narrowed, pointed or conical – rounded, always - without calyptra. Cell content pale blue-green, grey, yellowish or olive-green; in some species ability of chromatic adaptation (changeable phycobiline ratio). |
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| Genotype differences, molecular data: | ||||||||||
| Reproduction strategies, life cycles, cell division: Komárek (1992): Cell division by the crosswise binary fission, perpendicularly to the long axis of a trichome, daughter cells grow +/- up to the original size before the next division. All cells capable to divide. Reproduction by the fragmentation of trichomes without necridic cells into immotile hormocytes (indistinct motility was not proved yet). |
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| Ultrastructure: | ||||||||||
| Taxonomic position, higher hierarchy: Cyanophyceae, Oscillatoriales, Pseudanabaenaceae, Pseudanabaenoideae Notes to taxonomy, misinterpretations: |
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| Ecology, ecophysiology, ecological significance: Komárek (1992): Mainly benthic organisms, growing on the bottom of diverse water biotopes, pools, lakes, reservoirs with rich vegetation of water plants, commonly in metaphyton. Several species known from mineral, thermal or salinic waters. |
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| Physiology and biochemistry: |
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| Distribution, endemism, problematic citations: |
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| Reference strain: |
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| Infrageneric scheme, species concept: |
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| List of species: Jaaginema angustissimum (W. et G.S. West) Anagnostidis et Komárek 1988 Jaaginema borodinii (Voronichin) Anagnostidis et Komárek 1988 Jaaginema cavanillesianum (Gonzalez-Guerrero) Anagnostidis 2001 Jaaginema crassum (Voronichin) Anagnostidis 2001 Jaaginema filiforme (Copeland) Anagnostidis 2001 Jaaginema geitleri (Frémy) Anagnostidis et Komárek 1988 Jaaginema geminatum (Meneghini ex Gomont) Anagnostidis et Komárek 1988 Jaaginema gracile (Böcher) Anagnostidis et Komárek 1988 Jaaginema homogeneum (Frémy) Anagnostidis et Komárek 1988 Jaaginema kisselevii (Anisimova) Anagnostidis et Komárek 1988 Jaaginema kuetzingianum (Nägeli in Kützing) Anagnostidis et Komárek 1988 Jaaginema lancaeforme (Kalbe) Anagnostidis 2001 Jaaginema longearticulatum (Hansgirg ex Forti) Anagnostidis et Komárek 1988 Jaaginema metaphyticum Komárek in Anagnostidis et Komárek 1988 Jaaginema minimum (Gicklhorn) Anagnostidis et Komárek 1988 Jaaginema neglectum (Lemmermann) Anagnostidis et Komárek 1988 Jaaginema pallidum (Böcher) Anagnostidis et Komárek 1988 Jaaginema perfilievii (Anisimova) Anagnostidis et Komárek 1988 Jaaginema profundum (Schröter et Kirchner) Anagnostidis et Komárek 1988 Jaaginema pseudogeminatum (Schmid) Anagnostidis et Komárek 1988 Jaaginema quadripunctulatum (Brühl et Biswas) Anagnostidis et Komárek 1988 Jaaginema subtilissimum (Kützing ex De Toni) Anagnostidis et Komárek 1988 Jaaginema tenellum (Copeland) Anagnostidis 2001< Jaaginema thermale Anagnostidis 2001 Jaaginema trinkleri (Skuja) Anagnostidis 2001 Jaaginema unigranulatum (Biswas) Anagnostidis 2001 Jaaginema woronichinii (Anisimova in Elenkin) Anagnostidis et Komárek 1988 Unclear taxa: |
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| Keys: | ||||||||||
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Drawings: Komárek 1992
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Literature:
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