Myxobaktron

Generic name: MYXOBAKTRON Schmidle, 1904. Hedwigia 43: 415.

Synonyms:

Diagnosis:

Type species: Myxobaktron usterianum Schmidle 1904.

Descriptions:
Komárek & Anagnostidis (1998): Solitary cells without mucilage or with very fine, narrow individual gelatinous layer, straight or slightly arcuate, several times longer than wide, fusiform, gradually tapering to the ends and pointed or pointed-rounded. Cell content homogeneous, blue-green, olive-green or yellowish, in one planktic species with aerotopes.
Komárek (1992): Solitary cells without mucilage or with very narrow fine, diffluent and colourless slime envelope; never in colonies. Cells elongated, spindle-like, continually attenuated to the ends, at the ends bluntly pointed or rounded, more or less straight or slightly arcuated, facultatively with aerotopes and with solitary granules; after division are the cells asymmetrical, with one end more nerrowed, and the second one rounded; the ratio length: width in fullgrown cells always > 10:1, in young cells > 5:1. Ability to form filamentous involutionary cells.
Geitler (1932; sub Dactylococcopsis, incl. Rhabdogloea): Zellen zylindrisch und an den Enden zugespitzt, oder spindelförmig, oder ellipsoidisch und zugespitzt, gerade oder mehr oder weniger spiralig, S-förmig oder unregelmäßig gekrümmt, selten einzellen, meist zu wenigen in zarter, schwer sichtbarer Gallerte zu Kolonien vereinigt. Teilung quer.

Genotype differences, molecular data:

Reproduction strategies, life cycles, cell division:
Komárek (1992): Reproduction only by crosswise cell division, always perpendicularly to the long axis of the cell; sometimes occurs the asymmetrical cell division.

Ultrastructure:

Taxonomic position, higher hierarchy:
Cyanophyceae, Chroococcales, Synechococcaceae, Synechococcoideae
Notes to taxonomy, misinterpretations:

Ecology, ecophysiology, ecological significance:
Komárek & Anagnostidis (1998): Cell division transverse, perpendicular to the longitudinal axis, in the same plane in successive generations, into two, more or less isomorphic daughter cells soon separating from one another (rarely asymmetrically).
Komárek (1992): Little known and sporadically occurring genus. The type species was described from brackish waters in Philippines, one species grows planktic in hypersaline lakes (Near East), one free floating in pools in southern Africa (Angola). Probably more species described under other generic names, usually from tropical regions and more or less extreme (hypersalinic) biotopes.

Physiology and biochemistry:

Distribution, endemism, problematic citations:

Reference strain:

Infrageneric scheme, species concept:

List of species:
Myxobaktron hirudiforme G.S. West 1912
Myxobaktron salinum Walsby in Komárek et Anagnostidis 1986
Myxobaktron usterianum Schmidle 1904

Unclear taxa:
Cyanocloster muscicola sensu Kufferath 1929
Dactylococcopsis acicularis var. grandis Frémy 1930
Dactylococcopsis libyca Marchezoni 1946
Dactylococcopsis magna Bharadwaja 1963
Myxobaktron palatinum Schmidle 1905

Keys:

List of stains:

Drawings:

Application technology:

Literature:

	2.1 taxonomy: Geitler 1932, Geitler 1942, Potts 1980, Walsby et al. 1983, Komárek & Anagnostidis 1985, Komárek & Anagnostidis 1986, Hindák 1992, Komárek 1992, Komárek & Anagnostidis 1998
	2.2 cytomorphology:
	2.3 16S rRNA sequencing:
	2.4 biology and life cycles:
	2.5 ecology:

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