Jensen Anne-Mette, Finster Kai Waldemar, Karlson Ulrich
Department of Microbial Ecology, University of Aarhus, Ny Munkegade, Building 540, DK-8000 Aarhus C, Denmark.
Environ Toxicol Chem. 2003 Apr;22(4):730-5.
Pseudomonas sp. strain C3211 was isolated from a temperate climate soil contaminated with creosote. This strain was able to degrade carbazole, dibenzothiophene and dibenzofuran at 10 degrees C with acetone as a co-substrate. When dibenzothiophene was degraded by strain C3211, an orange compound, which absorbed at 472 nm, accumulated in the medium. Degradation of dibenzofuran was followed by accumulation of a yellowish compound, absorbing at 462 nm. The temperature optimum of strain C3211 for degradation of dibenzothiophene and dibenzofuran was at 20 to 21 degrees C, while the maximum temperature for degradation was at 27 degrees C. Both compounds were degraded at 4 degrees C. Degradation at 10 degrees C was faster than degradation at 25 degrees C. This indicates that strain C3211 is adapted to life at low temperatures.
假单胞菌属菌株C3211是从受杂酚油污染的温带气候土壤中分离出来的。该菌株能够在10℃下以丙酮作为共底物降解咔唑、二苯并噻吩和二苯并呋喃。当菌株C3211降解二苯并噻吩时，一种在472nm处有吸收的橙色化合物在培养基中积累。二苯并呋喃降解后，一种在462nm处有吸收的淡黄色化合物积累。菌株C3211降解二苯并噻吩和二苯并呋喃的最适温度为20至21℃，而降解的最高温度为27℃。两种化合物在4℃时均能降解。在10℃下的降解速度比在25℃下快。这表明菌株C3211适应低温环境。
