PubMed Health⌕ Search

Biomedical subjects

C S MCCLESKEY

Publications and source records attributed to C S MCCLESKEY.

8 recordsLinked to original sources

VOLATILE FATTY ACID REQUIREMENT OF A STRAIN OF LISTERIA MONOCYTOGENES.

Larson, A. D. (Louisiana State University, Baton Rouge), L. V. Hattier, and C. S. McCleskey. Volatile fatty acid requirement of a strain of Listeria monocytogenes. J. Bacteriol. 89:819-824. 1965.-Listeria monocytogenes strain 2 requires either isobutyric or 2-methylbutyric acid for growth. Elucidation of this requirement began with characterization of the growth-enhancing substance in culture filtrates of Aerobacter aerogenes. A. aerogenes required tryptose, glucose, and aerobic conditions for excretion of active fatty acids into the medium. Commercial preparations of isobutyric, 2-methylbutyric, isovaleric, 3-methylvaleric, and n-valeric acid supported the growth of strain 2. Purification of these fatty acids by gas chromatography demonstrated that strain 2 responded significantly only to isobutyric and 2-methylbutyric acid. Amines, alcohols, and hydroxy fatty acids, which were structurally related to the active acids, did not satisfy the fatty acid requirement of L. monocytogenes strain 2. Only one isolate (strain 2) of 128 cultures of L. monocytogenes required volatile fatty acid for growth.

Alcohols↗

DENITRIFICATION BY CORYNEBACTERIUM NEPHRIDII.

Hart, Lewis T. (Louisiana State University, Baton Rouge), A. D. Larson, and C. S. McCleskey. Denitrification by Cornyebacterium nephridii. J. Bacteriol. 89:1104-1108. 1965.-Corynebacterium nephridii was found to reduce nitrate (contrary to the original description) at a rapid rate. In the conventional 0.1% nitrate broth, neither nitrite nor nitrate was detected after 24 hr. There was no assimilation of nitrate nitrogen, and the final product of nitrate reduction was nitrous oxide. Manometric studies and growth experiments indicated that the organism is incapable of reducing nitrous oxide. C. nephridii is gram-negative, grows on bile salts (5%) agar, EMB Agar, and MacConkey Agar. It was proposed that this species be transferrrd to the genus Achromobacter and designated Achromobacter nephridii (Büsing, Döll, and Freytag) comb. nov.

Achromobacter↗

IDENTITY OF THE PINK-PIGMENTED METHANOL-OXIDIZING BACTERIA AS VIBRIO EXTORQUENS.

Stocks, Peter K. (Louisiana State University, Baton Rouge), and C. S. McCleskey. Identity of the pink-pigmented methanol-oxidizing bacteria as Vibrio extorquens. J. Bacteriol. 88:1065-1070. 1964.-Pink-pigmented bacteria isolated from enrichment cultures of methane oxidizers were found to possess similar morphological, cultural, and physiological characteristics. All the strains utilized methanol, formate, oxalate, succinate, glycerol, and benzene as sole carbon sources; methanol, formate, and glycerol afforded best growth. Most strains utilized fructose and ribose; other carbohydrates tested were not available as carbon and energy sources. There was strain variation in the use of hexane, heptane, n-propanol, n-butanol, acetate, and propionate. Methane, ethane, n-propane, and n-butane were not utilized. Our isolates, and Pseudomonas methanica of Harrington and Kallio (not the methane-dependent P. methanica of Dworkin and Foster), Pseudomonas AM1 of Peele and Quayle, Pseudomonas PRL-W4 of Kaneda and Roxburgh, and Protaminobacter ruber den Dooren de Jong are nearly identical with Vibrio extorquens (Bassalik) Bhat and Barker, and should be considered the same species.

Bacteria↗

MORPHOLOGY AND PHYSIOLOGY OF METHANOMONAS METHANOOXIDANS.

Stocks, Peter K. (Louisiana State University, Baton Rouge), and C. S. McCleskey. Morphology and physiology of Methanomonas methanooxidans. J. Bacteriol. 88:1071-1077. 1964.-Pure cultures of methane-oxidizing bacteria isolated from soil, from the rumen of a fistulated cow, and from coalmine water were found to be identical in morphological, cultural, and physiological characteristics with Methanomonas methanooxidans of Brown and Strawinski. Two of the isolates were serologically related to the organism of Brown and Strawinski. All the strains required methane for good growth, but a delayed moderate growth occurred on methanol. No other substances were utilized as carbon and energy source. Nitrogen requirements were satisfied by nitrates, ammonium salts, peptone, or certain amino acids. The taxonomic position of the species is discussed.

Amino Acids↗