Ferroni G D, Kaminski J S
Can J Microbiol. 1980 Oct;26(10):1184-90. doi: 10.1139/m80-198.
The quantification of psychrophilic/psychrotrophic and mesophilic, heterotrophic bacteria from a lake which experiences seasonal temperature fluctuations showed that the psychrophilic/psychrotrophic population ranged in number from 1212 to 87000/mL, whereas the mesophilic population ranged from 67 to 3783/mL, for sediment-water interface samples over the yearly cycle. The relative abundance of psychrophiles/psychrotrophs and mesophiles varied with season, but psychrophilic/psychrotrophic bacteria were found to predominate on every sampling occasion. A considerable number of the 37 degree C isolates were found to be psychrotrophs having broad temperature ranges for growth. An especially notable result was the isolation os psychrophiles on every sampling occasion, and in such high numbers, from this "nonpermanently cold" environment. A total of 388 isolates were described according to Gram reaction, colony and cell morphology, biochemical activities, and thermal type, and on the basis of similarities they were grouped into 158 "working types" with their frequencies of occurrence, for all four samplings, did not reveal a direct relationship between numerical predominance and growth rate as determined by temperature.
对一个经历季节性温度波动的湖泊中的嗜冷/耐冷和嗜温异养细菌进行定量分析，结果表明，在一年的周期内，沉积物-水界面样本中嗜冷/耐冷菌数量在1212至87000/mL之间，而嗜温菌数量在67至3783/mL之间。嗜冷/耐冷菌和嗜温菌的相对丰度随季节变化，但在每次采样时均发现嗜冷/耐冷菌占主导地位。在37℃下分离出的相当一部分菌株被发现是具有广泛生长温度范围的耐冷菌。一个特别显著的结果是，在每次采样时都能从这个“并非常年寒冷”的环境中分离出大量嗜冷菌。根据革兰氏反应、菌落和细胞形态、生化活性以及热型对总共388个分离株进行了描述，并基于相似性将它们分为158个“工作类型”，所有四次采样中它们的出现频率并未揭示数量优势与温度所决定的生长速率之间的直接关系。
