Forsyth G, Logan N A
School of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, UK.
Lett Appl Microbiol. 2000 Mar;30(3):263-6. doi: 10.1046/j.1472-765x.2000.00706.x.
Sixty-two samples of Antarctic soils, mosses, penguin guano, algae and lichens were examined for the presence of aerobic endospore-forming bacteria; 36 samples (58%) yielded such organisms, and two samples from Edmonson Point (74 degrees 21'S 165 degrees 08'E) and one sample from Apostrophe Island (73 degrees 32'S 167 degrees 24'E), northern Victoria Land, yielded strains of Bacillus thuringiensis. Further isolations from two of the samples, appreciable variation in biotypes among the strains, failure of the strains to grow on routine B. thuringiensis media, and the fact that one of the sampling sites is very rarely visited by humans, suggest that the organisms were living in these soils rather than being chance contaminants. A representative strain, from Apostrophe Island, was identified as serovar pirenaica (H57).
对62份南极土壤、苔藓、企鹅粪便、藻类和地衣样本进行了检测，以确定其中需氧芽孢杆菌的存在情况；36份样本（58%）检测出了这类微生物，来自埃蒙德森角（南纬74°21′，东经165°08′）的两份样本以及来自维多利亚地北部的阿坡罗菲岛（南纬73°32′，东经167°24′）的一份样本分离出了苏云金芽孢杆菌菌株。从两份样本中进一步分离，菌株之间生物型存在明显差异，这些菌株在常规苏云金芽孢杆菌培养基上无法生长，而且其中一个采样地点很少有人类到访，这些都表明这些微生物是生活在这些土壤中，而非偶然污染物。从阿坡罗菲岛分离出的一株代表性菌株被鉴定为皮瑞亚种（H57）。
