Mycoplasmatales

Thesaurus

Noun

Mycoplasmatales - coextensive with the family Mycoplasmataceaeorder Mycoplasmatalesanimal order - the order of animalsdivision Eubacteria - one-celled monerans having simple cells with rigid walls and (in motile types) flagellafamily Mycoplasmataceae, Mycoplasmataceae - pleomorphic Gram-negative nonmotile microorganism similar to both viruses and bacteria; parasitic in mammals

Mycoplasmatales

[‚mī·kō‚plaz·mə′tā·lēz] (microbiology) The single order of the class Mollicutes; organisms are gram-negative, generally nonmotile, nonsporing bacteria which lack a true cell wall.

Mycoplasmatales

an order of very small microorganisms that differ from true bacteria (Eubacteriae) by the absence of a cell wall. Mycoplasmatales, which are gram-negative, generally nonmotile, and non-sporebearing, are capable of passing through a bacterial filter. In liquid nutrient media they are coccoid, discoidal, or filamentous; on solid media they form small colonies with a dark center. The Mycoplasmatales reproduce by division of threads on coccoid cells. These bacteria are in a number of ways morphologically and physiologically similar to L-form bacteria.

The group of microbes formerly known as pleuropneumonia-like organisms (PPLO) are now assigned to the Mycoplasmatales; they cause pleuropneumonia in cattle and respiratory mycoplasmosis in birds. Mycoplasmatales are also found in humans, causing rheumatic and arthritic conditions and infections of the lacteal glands and respiratory tract. There are saprophytic forms, which live in the mucous membrane of the mouth, as well as in fresh water, sewage, and manure; these forms participate in the breakdown of matter in nature.

REFERENCES

Timakov, V. D., and G. Ia. Kagan. Semeistvo Mycoplasmataceae i L-formy bakterii. Moscow, 1967.
Mycoplasmatales and the L-phase of Bacteria. New York, 1969.

A. A. IMSHENETSKII

Mycoplasmatales

My·co·plas·ma·ta·les

(mī'kō-plaz'mă-tā'lēz), An order of gram-negative bacteria containing cells that are bounded by a three-layered membrane but do not possess a true cell wall. The minimal reproductive units are 0.2-0.3 mcm in diameter. Pathogenic and saprophytic species occur. These organisms reproduce through the breaking up of branched filaments into coccoid, filterable elementary bodies. The order includes the so-called pleuropneumonialike organisms , under organism (PPLO).

My·co·plas·ma·ta·les

(mī'kō-plaz-mă-tā'lēz) An order of gram-negative bacteria with cells that are bounded by a three-layered membrane but do not possess a true cell wall. Pathogenic and saprophytic species occur. These organisms reproduce through the breaking up of branched filaments into coccoid, filterable elementary bodies. The order includes the so-called pleuropneumonialike organisms (PPLO).

Mycoplasmatales

Mycoplasmatales

Mycoplasmatales

Mycoplasmatales

REFERENCES

Mycoplasmatales

My·co·plas·ma·ta·les

My·co·plas·ma·ta·les

Mycoplasmatales

Synonyms for Mycoplasmatales

noun coextensive with the family Mycoplasmataceae

Synonyms

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