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Quantitative ecology and dry-heat resistance of psychrophilesMicroorganisms capable of growth at 7 C were enumerated and isolated from soil samples from the manufacture area (Denver, Colorado) and assembly area (Cape Kennedy, Florida) of the Viking spacecraft. Temperature requirements were determined for these isolates, and those growing at 3 C, but not at 32 C were designated as obligate psychrophiles in this investigation. These were identified to major generic groups, and the population density of obligate psychrophiles from the various groups was determined. Dry heat D-values were found for those spores that demonstrated growth or survival under a simulated Martian environment.
Document ID
19740023458
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Winans, L., Jr. (Abilene Christian Univ. TX, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1974
Subject Category
Biosciences
Report/Patent Number
NASA-CR-139667
Accession Number
74N31571
Funding Number(s)
CONTRACT_GRANT: NGR-44-095-001
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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