Ein neuer Vertreter der Myxobakteriengattung Archangium Jahn

Kühlwein, H.; Reichenbach, Hans

doi:10.1007/bf00408457

Cited by 12 publications

(3 citation statements)

References 5 publications

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“…The descriptions of the genus by McCurdy (1974), and of the species included - Angiococcus disciformis by Thaxter (1904), Jahn (1924), McCurdy (1974) and Hook et al (1980); Cystobacter minus by Krzemieniewska & Krzemieniewski (1926) and McCurdy (1970); and Cystobacter violaceus by Kühlwein & Gallwitz (1958), Kühlwein & Reichenbach (1964) and Reichenbach (2005) - can be summarized and emended as follows: Gram-negative, gliding bacteria, undergoing development upon starving conditions. Vegetative cells are long slender rods with tapered ends.…”

Section: Emended Description Of the Genus Archangium Jahn 1924 Almentioning

confidence: 99%

“…Other synonyms: ‘ Polyangium violaceum ’ Kühlwein and Gallwitz 1958, ‘ Archangium violaceum ’ Kühlwein and Reichenbach 1964.…”

Section: Description Of Archangium Violaceum ( Reichenbach 2007 ) Commentioning

confidence: 99%

“…The species is as described by Kühlwein & Gallwitz (1958), Kühlwein & Reichenbach (1964) and Reichenbach (2005). Vegetative cells are slender rods with tapering ends, 0.5–0.7 × 8–12 μm.…”

Section: Description Of Archangium Violaceum ( Reichenbach 2007 ) Commentioning

confidence: 99%

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Reclassification of Angiococcus disciformis, Cystobacter minus and Cystobacter violaceus as Archangium disciforme comb. nov., Archangium minus comb. nov. and Archangium violaceum comb. nov., unification of the families Archangiaceae and Cystobacteraceae, and emended descriptions of the families Myxococcaceae and Archangiaceae

Lang

Schümann

Tindall

et al. 2015

International Journal of Systematic and Evolutionary Microbiology

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The species Archangium gephyra, Angiococcus disciformis, Cystobacter minus and Cystobacter violaceus are currently classified in three different genera of the order Myxococcales. The 16S rRNA gene sequences of the respective type strains show a similarity higher than 98.4 % and form a tight phylogenetic group. A dendrogram calculating the similarity of MALDI-TOF spectra confirmed the close relatedness of the four species that grouped in a monophyletic cluster in the neighbourhood of other species of the genus Cystobacter. The type strains shared similar fatty acid patterns of high complexity with iso-C 15 : 0 , C 16 : 1 v5c and iso-C 14 : 0 3-OH as the major components. The vegetative cells of these species are uniformly long needle-shaped rods, and the myxospores are short rods, ovoid or irregularly spherical thus differing from the myxospores of species related to Cystobacter fuscus, the type species of this genus. Some enzymic and hydrolysing reactions of the type strains are described. As a result of the high relatedness and similarity of the four species, it is proposed to place them into one genus, and due to phylogenetic and morphological distinctness, the species should be classified in a genus distinct from the genus Cystobacter as Archangium gephyra (type strain M18 T 5DSM 2261 T 5ATCC 25201 T 5NBRC 100087 T), Archangium disciforme comb. nov. (type strain CMU 1 T 5DSM 52716 T 5ATCC 33172 T), Archangium minus comb. nov. (proposed neotype strain Cb m25DSM 147515JCM 12627) and Archangium violaceum comb. nov. (type strain Cb vi61 T 5DSM 14727 T 5CIP 109131 T 5JCM 12629 T). Since the family Archangiaceae Jahn 1924 AL has priority over the family Cystobacteraceae McCurdy 1970 AL, it is proposed to assign the genera Archangium, Anaeromyxobacter, Cystobacter, Hyalangium, Melittangium and Stigmatella to the family Archangiaceae. Emended descriptions of the families Myxococcaceae and Archangiaceae are also provided. At times when morphology was the most important feature in the taxonomy of myxobacteria, four species had been assigned to three different genera. Archangium gephyra, Angiococcus disciformis (listed as Myxococcus disciformis, see below for details) and Cystobacter minus are listed in the Approved Lists of Bacterial Names (AL) (Skerman et al., 1980) and Cystobacter violaceus was described in Abbreviations: AL, Approved Lists of Bacterial Names (Skerman et al., 1980); ECL, equivalent chain-length; MALDI-TOF, matrix-assisted laser desorption/ionization time-of-flight. Four supplementary tables are available with the online Supplementary Material.

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Section: Emended Description Of the Genus Archangium Jahn 1924 Almentioning

confidence: 99%

“…Other synonyms: ‘ Polyangium violaceum ’ Kühlwein and Gallwitz 1958, ‘ Archangium violaceum ’ Kühlwein and Reichenbach 1964.…”

Section: Description Of Archangium Violaceum ( Reichenbach 2007 ) Commentioning

confidence: 99%

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Reclassification of Angiococcus disciformis, Cystobacter minus and Cystobacter violaceus as Archangium disciforme comb. nov., Archangium minus comb. nov. and Archangium violaceum comb. nov., unification of the families Archangiaceae and Cystobacteraceae, and emended descriptions of the families Myxococcaceae and Archangiaceae

Lang

Schümann

Tindall

et al. 2015

International Journal of Systematic and Evolutionary Microbiology

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Archangium

Reichenbach¹

2015

Bergey's Manual of Systematics of Archaea and Bacteria

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Ar.chan' gi.um . Gr. fem. n. arche beginning, origin, primitive; Gr. neut. n. angion vessel, container; Archangium primitive vessel. Proteobacteria / Deltaproteobacteria / Myxococcales / Cystobacteraceae / Archangium Vegetative cells are long, slender, needle‐shaped rods with tapering ends. Fruiting bodies without sporangioles , contorted strings of myxospores in hardened slime forming cushion‐shaped masses, very variable in shape and size, may separate into packets when put under pressure. Myxospores short, fat rods with rounded ends to almost spherical, optically refractile. Swarm colonies with branched radial veins in a tough slime sheet. Does not degrade chitin. Type species : Archangium gephyra Jahn 1924, 67.

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Cystobacter

Reichenbach¹

2015

Bergey's Manual of Systematics of Archaea and Bacteria

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Cys.to.bac' ter . Gr. fem. n. kystis bladder; M.L. masc. n. bacter from Gr. fem. n. bakteria rod, stick; M.L. masc. n. Cystobacter bladder‐forming rod. Proteobacteria / Deltaproteobacteria / Myxococcales / Cystobacteraceae / Cystobacter The history of the genus Cystobacter and the problems associated with its recognition are discussed above in the introduction to the family. The fruiting body shape and structure of Cystobacter is similar to fruiting bodies produced by Polyangium, Sorangium, Byssophaga, Jahnia, Pyxicoccus , and to a certain extent, Stigmatella hybrida . The genus as it is presented here still is heterogeneous and probably comprises at least three different genera. One group of species, with Cystobacter fuscus as the main representative, has slender, often slightly C‐ or S‐shaped bent, rod‐shaped myxospores with more or less tapering ends. Many strains of this group are efficient chitin degraders. The second group, represented by Cystobacter disciformis , has myxospores that are stout, short, fat rods, very much like myxospores of Archangium gephyra . These organisms rarely attack chitin. A third group, centered around Cystobacter gracilis , has delicate vegetative cells with tapering ends, and small myxospores that are straight or slightly bent rods with rounded ends. Analysis of the available 16S rRNA sequences separates at least the first two groups rather neatly (Spröer et al., 1999). Type species : Cystobacter fuscus Schroeter 1886, 170.

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Ein neuer Vertreter der Myxobakteriengattung Archangium Jahn

Cited by 12 publications

References 5 publications

Archangium

Cystobacter

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