Valero-Guillén P L, Martín-Luengo F
Can J Microbiol. 1984 Aug;30(8):1088-92. doi: 10.1139/m84-169.
Actinomycetes belonging to the genus Nocardia were isolated from the surface horizon of 15 out of 46 soil samples examined. All the nocardiae strains isolated contained mycolic acids and saturated and unsaturated straight chain fatty acids (from 12 to 18 carbon atoms) and tuberculostearic acid and were biochemically identified as members of the Nocardia asteroides complex. Nocardiae were detected in alluvial, brown, and serosem great soil groups, but not in calcic brown, solontchack, and regosol great soil groups. Numbers of nocardiae isolated varied from 5.12 X 10(2) to 1.21 X 10(4) colony-forming units per gram of dry weight, and they were statistically correlated with the carbon content (percent C) of the soil. Soil samples were, in general, very dry.
在所检测的46份土壤样本中，有15份的表层土壤分离出了诺卡氏菌属的放线菌。所有分离出的诺卡氏菌菌株都含有分枝菌酸、饱和与不饱和直链脂肪酸（碳原子数为12至18个）以及结核硬脂酸，经生化鉴定为星状诺卡氏菌复合体的成员。在冲积土、棕壤和半水成土这几个大土类中检测到了诺卡氏菌，但在石灰性棕壤、盐土和粗骨土这几个大土类中未检测到。每克干重土壤中分离出的诺卡氏菌数量从5.12×10²到1.21×10⁴个菌落形成单位不等，且与土壤的碳含量（碳百分比）存在统计学相关性。总体而言，土壤样本非常干燥。
