Pellett S, Bigley D V, Grimes D J
Appl Environ Microbiol. 1983 Jan;45(1):328-32. doi: 10.1128/aem.45.1.328-332.1983.
The distribution of Pseudomonas aeruginosa in navigation pool 8 of the upper Mississippi River was investigated by acetamide broth enrichment of water, sediment, and swab (solid-water interface) samples. Among the 152 P. aeruginosa isolates, serological type 1 was most prevalent (34.2%), and a small number (13.2%) showed carbenicillin resistance. Pigmentation was variable, with only 44.7% elaborating typical blue-green pigment. P. aeruginosa was most commonly isolated from sediment, with solid-water interfaces (aufwuchs samples) also exhibiting high frequencies of isolation. Current velocity, oxygen and nutrient availability, surface tension, desiccation, and negative phototropism were important factors in the riverine distribution of this epibacterium.
通过对密西西比河上游8号航段的水、沉积物和拭子(固水界面)样本进行乙酰胺肉汤富集培养,研究了铜绿假单胞菌在该区域的分布情况。在152株铜绿假单胞菌分离株中,血清型1最为常见(34.2%),少数(13.2%)表现出对羧苄青霉素耐药。色素沉着情况不一,只有44.7%产生典型的蓝绿色色素。铜绿假单胞菌最常从沉积物中分离得到,固水界面(附生生物样本)的分离频率也很高。流速、氧气和养分可用性、表面张力、干燥和负向光性是这种附生细菌在河流中分布的重要因素。