Institut für Meeresforschung, Am Handelshafen 12, D-2850, Bremerhaven, Federal Republic of Germany.
Microb Ecol. 1980 Jun;6(2):141-6. doi: 10.1007/BF02010552.
The mineral salt requirements of 27 strains ofBacillus firmus were determined. Twenty-six of these strains were of marine origin and one terrestrial strain was used as a reference. Three strains demonstrated strictly halophilic behavior, i.e., they showed no growth in media prepared without sodium chloride. Seven strains were nonhalophilic. The growth of 17 strains was stimulated by the addition of sodium chloride, but the cells were able to grow without it. These results were compared with the DNA base compositions of the strains. In contrast to literature data, relationships between the DNA base ratios and the halophilic or nonhalophilic behavior of the cells could not be detected. But strains with guanine plus cytosine values above 41 mol% did grow well at 44°C, and those strains showing poor growth at this temperature had lower guanine plus cytosine percentages.
测定了 27 株 Firmus 芽孢杆菌的矿盐需求。其中 26 株为海洋来源，一株陆地来源的菌株用作参照。三株表现出严格的嗜盐行为，即它们在没有氯化钠的培养基中无法生长。7 株菌株为非嗜盐菌株。17 株菌株的生长受到氯化钠的刺激，但它们无需氯化钠也能生长。将这些结果与菌株的 DNA 碱基组成进行比较。与文献数据相反，未能检测到 DNA 碱基比与细胞的嗜盐或非嗜盐行为之间的关系。但是，鸟嘌呤加胞嘧啶值高于 41mol%的菌株在 44°C 下生长良好，而在该温度下生长不良的菌株鸟嘌呤加胞嘧啶百分比较低。
