西藏高海拔冰川冰中的微生物。
Microorganisms in a high altitude glacier ice in Tibet.
作者信息
Zhang X J, Yao T D, Ma X J, Wang N L
机构信息
Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions, Environmental and Engineering Research Institute, Chinese Academy of Science, Lanzhou, 730 000 China.
出版信息
Folia Microbiol (Praha). 2002;47(3):241-5. doi: 10.1007/BF02817645.
Eighty-one strains of viable microorganisms were recovered from 23 samples collected from Ice Core 3 of Malan Glacier (China, 91 degrees 45.3' E, 35 degrees 48.4' N) drilled at high altitude (5620 m). All the strains were prokaryotes--75 of bacteria (including spore-forming ones) and 6 of actinomycetes. The characteristic genera differ from those of Arctic and Antarctic ice, in which many fungi and algae are widely distributed; this shows an difference of environmental conditions between Tibet and polar regions. The variation in number and species of Bacillus in different ice core layers implied changes of environmental conditions in the past.
从中国马兰冰川3号冰芯（东经91°45.3′，北纬35°48.4′）海拔5620米高处钻取的23个样本中，分离出81株存活的微生物。所有菌株均为原核生物——75株细菌（包括产芽孢细菌）和6株放线菌。其特征属与北极和南极冰层的不同，北极和南极冰层中广泛分布着许多真菌和藻类；这表明西藏与极地地区环境条件存在差异。不同冰芯层中芽孢杆菌数量和种类的变化暗示了过去环境条件的变化。
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