Isolation of the phase variants of the purple photosynthetic bacterium Rhodobacter sphaeroides and investigation of their molecular, physiological, biochemical, and morphological characteristics |
| |
Authors: | R N Ivanovskii E S Mil’ko D M Mil’ko |
| |
Institution: | 16456. Department of Microbiology, Faculty of Biology, Moscow State University, Moscow, 119899, Russia
|
| |
Abstract: | The ability of purple photosynthetic bacteria to form phase variants (dissociants) was discovered. The R and M phase variants were isolated from the Rhodobacter sphaeroides population, and their affiliation with the parent strain was confirmed by the PCR of their 16S rRNA gene fragments. The R and M variants were different both in colony morphology and in resistance to some physical and chemical factors. The R variant of Rhb. sphaeroides had advantages when grown in the light, at elevated temperature, under aeration, and UV irradiation, whereas the M variant had advantages when grown aerobically in the dark or at increased NaCl concentrations. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|