Soina V S, Vorobiova E A, Zvyagintsev D G, Gilichinsky D A
Department of Soil Science, Moscow State University, Russia.
Adv Space Res. 1995 Mar;15(3):237-42. doi: 10.1016/s0273-1177(99)80090-8.
The present report is the first contribution toward a comprehensive fine-structural study of microbial cells from permafrost. Prokaryotes with a variety of cell wall types demonstrate high stability of cell structure after long-term cryopreservation in frozen soils and sediments of the Arctic. The surface capsular layers that were a salient feature of the cells both in situ and on nutrient media may be an adaptation to low temperature. To the extent that permafrost regions on Earth approximate Martian conditions, preservation of cell structure there can serve as the basis for predictions about preservation in Martian permafrost sediments.
本报告是对永久冻土中微生物细胞进行全面精细结构研究的首份成果。具有多种细胞壁类型的原核生物在北极冻土和沉积物中长期冷冻保存后，展现出细胞结构的高度稳定性。原位及在营养培养基中细胞均具有的显著特征——表面荚膜层，可能是对低温的一种适应。就地球永久冻土区域与火星条件相近的程度而言，那里细胞结构的保存可为预测火星永久冻土沉积物中的保存情况提供依据。
