1887

Abstract

The name sp. nov. is proposed for a group of organisms that were isolated from the feces of penguins in the Federal Republic of Germany and from a cow in the United States. strains are gram-negative, oxidase-negative, fermentative, rod-shaped organisms that grow on MacConkey agar, as well as other media that are selective for members of the The 13 isolates which we studied gave negative results for the following tests: indole production, Voges-Proskauer, Simmons citrate, HS production on triple sugar iron and Kligler agars, urease, lysine decarboxylase, arginine dihydrolase, gelatinase, growth in the presence of KCN, malonate, acid production from -arabinose, cellobiose, dulcitol, erythritol, lactose, melezitose, melibiose, a-methylglucoside, raffinose, salicin, -sorbitol, -sorbose, starch, -tagatose, trehalose, -turanose, and -xylose (15% positive after 7 days), esculin hydrolysis, acetate, lipase, deoxyribonuclease, and -nitrophenyl-β-D-galactopyranoside. The strains were positive for the following tests: catalase, nitrate reductase, methy1 red, phenylalanine deaminase, acid production from -glucose, adonitol, -arabitol, -fructose, -galactose, -mannose, and -rhamnose, and tyrosine clearing. Acid production from glycerol, -inositol, maltose, and -mannitol was delayed; gas was produced from -glucose, -galactose, and -mannose in small amounts or not at all (54% positive after 7 days). Motility at 36°C was variable (46% positive after 2 days; 85% positive after 7 days). Deoxyribonucleic acids from 12 other strains of were highly related (91 to 100% related in reactions assayed on hydroxyapatite at 60 and 75°C) to P-labeled deoxyribonucleic acid from the proposed type strain (strain ATCC 35613). Labeled deoxyribonucleic acid from this type strain was 22 to 45% related at 60°C and 4 to 31% related at 75°C to deoxyribonucleic acids from four other species. The levels of relatedness of to species ranged from 10 to 13% in 60°C reactions. could be differentiated from the other species by the following characteristics: negative tests for Simmons citrate, urease, indole production, and acid production from trehalose and positive tests for acid production from adonitol, -arabitol, -galactose, and -rhamnose. All of the strains which we studied were resistant to tetracycline, and most strains were resistant to cephalothin.

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1986-04-01
2024-06-19
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