Study of Initial Colonization by Environmental Microorganisms in the Russian Segment of the International Space Station (ISS)

Gravitational and space research : publication of the American Society for Gravitational and Space Research Pub Date : 2014-12-01 DOI:10.2478/gsr-2014-0012

U. Reidt, A. Helwig, L. Plobner, Veronika Lugmayr, Ulrich Treutlein, S. Kharin, Yu.I. Smirnov, N. Novikova, J. Lenic, V. Fetter, T. Hummel

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引用次数: 8

Abstract

ABSTRACT In this report, we describe the initial colonization of environmental microorganisms associated with ISS on four different materials (Nomex, cable labeling material, printed circuit board, and aluminum), which are commonly used at the ISS. Material substrates were placed in the Russian segment of the ISS in a Target Book for 135 days. After the incubation, the Target Book was analyzed on Earth by determining colony-forming units and identifying the microorganisms by rRNA gene sequencing. The highest cell concentrations and widest biological diversity were on the polymer materials, such as Nomex and cable labeling material. Additional molecular biological identification revealed the following organisms as typical pioneer microorganisms: Staphylococcus spp., Bacillus spp., Streptococcus spp., Cladosporium spp., Sphingomonas spp., Micrococcus luteus, and Stenotrophomonas maltophilia.

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国际空间站俄罗斯段环境微生物初始定植的研究

在本报告中，我们描述了与国际空间站相关的环境微生物在国际空间站常用的四种不同材料(Nomex、电缆标签材料、印刷电路板和铝)上的初始定植。材料基材被放置在国际空间站俄罗斯部分的目标书中135天。孵育后，在地球上对Target Book进行分析，确定菌落形成单位，并通过rRNA基因测序鉴定微生物。高分子材料上的细胞浓度最高，生物多样性最广，如Nomex和电缆标签材料。进一步的分子生物学鉴定表明，以下微生物是典型的先锋微生物:葡萄球菌、芽孢杆菌、链球菌、枝孢杆菌、鞘氨单胞菌、黄体微球菌和嗜麦芽窄养单胞菌。

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Gravitational and space research : publication of the American Society for Gravitational and Space Research

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