Rhodopseudomonas globiformis, sp. n., a new species of the Rhodospirillaceae

✍ Scribed by Norbert Pfennig

• Publisher: Springer
• Year: 1974
• Tongue: English
• Weight: 765 KB
• Volume: 100
• Category: Article
• ISSN: 0302-8933
• DOI: 10.1007/bf00446317

✦ Synopsis

Enrichments of pH: 5.1, inoculated from a warm, acidic sulfur spring 9 of the Yellowstone Park, yielded purple red cultures of a mobile, spherical organism belonging to the Rhodospirillaceae, described herein as a new species Rhodopseudomonas globi]ormis. Under favourable conditions, the cells are 1.6--1.8 y.m in diameter, smaller and larger cells may occur. The photopigments consist of bacteriochlorophyll ap and new aliphatic methoxylated ketocarotenoids. The organism grows either under anaerobic conditions in the light or under mieroaerophilie conditions in the dark. Biotin, p-aminobenzoie acid and a source of reduced sulfur are required as growth factors. Glueonate, mannitol, fructose and ethanol are the best carbon sources at a pH of 4.9. Growth is inhibited by low concentrations of sulfide.