Page:Bergey's manual of determinative bacteriology.djvu/936

 ORDER X. MYCOPLASMATALES FREUNDT, 1955.

My.co.plas.ma.ta'les. M.L. neut.n. Mycoplasma type genus of the order; -ales ending to denote an order; M.L. fern. pi. n. Mycoplasmatales the Mycoplasma order.

Highly pleomorphic organisms which possess a peculiar mode of reproduction (according to some observers) characterized by the breaking up of filaments (with a more or less pronounced tendency to true branching) into coccoid, filterable elementary bodies. The cell bodies are soft and fragile; without special precautions they are often distorted or entirely destroyed in microscopical preparations. Non-motile. Typical endospores are never produced. Gram-negative. Growth occurs in agar media, although most of the species have exacting nutritional requirements. Pathogenic and saprophytic species occur.

FAMILY I. MYCOPLASMATACEAE FREUNDT, 1955.

My.co.plas.ma.ta'ce.ae. M.L. neut.n. Mycoplasma type genus of the family; -aceae ending to denote a family; M.L. fem.pl.n. Mycoplasmataceae the Mycoplasma family.

Characters as for the order.

{{c|(Asterococcus Borrel, Dujardin-Beaumetz, Jeantet and Jouan, Ann. Inst. Past., 24, 1910, 179; not Asterococcus Scherffel, Ber. d. deutsch. Bot. Gesellsch., 26 A, 1908, 762; Coccobacillus Martzinovski, Ann. Inst. Past., 25, 1911, 917; not Coccobacilhis Gamaleia, Cent. f. Bakt., 4, 1888, 167; Micromyces Frosch, Arch. f. wissen. u. prakt. Tierheilk., 49, 1923, 35 and 273; not Micromyces Dangeard, Le Botaniste, 1, 1889, 55; Nowak, Ann. Inst. Past., 43, 1929, 1349; Asteromyces Wroblewski, Ann. Inst. Past., 47, 1931, 105; Anulomyces Wroblewski, ibid., Ill; Borrelomyces Turner, Jour. Path, and Bact., 4^, 1935, 25; Bovimyces Sabin, Bact. Rev., 5, 1941, 57; Pleuropneumonia Tulasne and Brisou, Ann. Inst. Past., 88, 1955, 237; see Freundt, Internat. Bull, of Bact. Nomen. and Taxon., 5, 1955, 72; and Edward, Internat. Bull, of Bact. Nomen. and Taxon., 5, 1955, 87.) {{c|914}}