Bacteroides ureolyticus, a New Species to Accommodate Strains Previously Identified as 'Bacteroides corrodens, Anaerobic'

Autor:	Francis L. Jackson, Yvonne E. Goodman
Rok vydání:	1978
Předmět:	Oxidase test biology Strain (chemistry) Cytochrome ved/biology Cytochrome c Immunology ved/biology.organism_classification_rank.species Microbiology Pilus Biochemistry Casein biology.protein Carbohydrate fermentation Bacteroides ureolyticus
Zdroj:	International Journal of Systematic Bacteriology. 28:197-200
ISSN:	1465-2102 0020-7713
DOI:	10.1099/00207713-28-2-197
Popis:	The name Bacteroides ureolyticus is proposed for a species to accommodate strains of gram-negative, urease-positive, anaerobic, corroding rods previously incorrectly referred to as Bacteroides corrodens. The organisms are catalase negative and reduce nitrate. In peptone-yeast-glucose medium, growth is enhanced by the addition of fumarate and formate, and succinate is the major end product. Conventional carbohydrate fermentation tests are negative. The oxidase test is positive and is markedly inhibited by azide. Absorption bands of reduced cytochromes are seen by visual spectroscopy at 550 nm (cytochrome c) and 555-560 nm (b-type cytochrome); no cytochrome α band was detected. Most strains hydrolyze gelatin and casein. Strains with very weak proteolytic activity are also encountered. The cells are nonflagellated but may show “twitching motility.” Electron micrographs of five of seven strains reveal polar pili. Strains that lack pili do not produce spreading colonies or show twitching motility. The guanine-plus-cytosine content of the deoxyribonucleic acid is in the range of 28.0 to 30.0 mol%. Strain NCTC 10941 is designated as the type strain.
Databáze:	OpenAIRE
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