Studies on bacteria-like particles sampled from the stratosphere

M. Wainwright; P.K. Weber; J.B. Smith; I.D. Hutcheon; B. Klyce; N.C. Wickramasinghe; J.V. Narlikar; P. Rajaratnam

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Studies on bacteria-like particles sampled from the stratosphere

机译：从平流层取样的细菌样颗粒的研究

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Bacteria-like particles recovered from the stratosphere and deposited on cellulose acetate membranes have been analysed to confirm their bacterial nature. One particle appeared to be attached to an inorganic particle apparently by mucoid material typically produced by bacteria. A filamentous structure, morphologically similar to a fungal hypha, was also observed. EDS analysis showed that the particles were all non-mineral and therefore could be biological in nature. However, the composition of several clumps of nanobacteria-sized particles were found, by SIMS analysis, to be inconsistent with that of bacteria, The results show that it is dangerous to assume that bacteria-like particles seen under scanning electron microscopy are necessarily bacteria.

机译：从平流层中回收并沉积在醋酸纤维素膜上的细菌样颗粒已经过分析，以确认其细菌性质。很明显，一种颗粒似乎是由细菌通常产生的粘液状物质附着在无机颗粒上的。还观察到丝状结构，其形态类似于真菌菌丝。 EDS分析表明，这些颗粒都是非矿物的，因此本质上可以是生物的。但是，通过SIMS分析发现，几团纳米细菌大小的颗粒的组成与细菌的组成不一致。结果表明，假设在扫描电子显微镜下看到的细菌样颗粒一定是细菌是危险的。

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来源
《Aerobiologia》 |2004年第4期|p.237-240|共4页
作者
M. Wainwright; P.K. Weber; J.B. Smith; I.D. Hutcheon; B. Klyce; N.C. Wickramasinghe; J.V. Narlikar; P. Rajaratnam;
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作者单位

Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK;

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正文语种 eng
中图分类生物科学;
关键词
astrobiology; panspermia; scanning electron microscopy; SIMS; stratosphere;

机译：天体生物学;大精子症;扫描电镜;SIMS;平流层;

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Studies on bacteria-like particles sampled from the stratosphere

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