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Effects of lunar soil, Zagami meteorite, and ocean ridge basalt on the excretion of itoic acid, a siderophore, and coproporphyrin by Bacillus subtilisSamples of lunar soil (10084,151), Zagami meteorite, postulated to be ejected from Mars, and ocean ridge basalt, the most abundant volcanic rock on earth, all completely inhibited the excretion of itoic acid and of coproporphyrin by Bacillus subtilis, a common airborne bacterium. Since such inhibition has been known to occur only under iron rich growth conditions(the excretion of these compounds occurs under iron deficient growth conditions), the result indicated that the organism was capable of extracting iron quite readily from these materials. A sample of synthetic ilmenite completely failed to inhibit the excretion of coproporphyrin, and inhibited the excretion of itoic acid only slightly. The result suggested that much of the iron extracted by the organism must have come from iron sources other than ilmenite,such as pyroxenes and olivines,in these natural materials tested.
Document ID
19860021949
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ito, T.
(East Carolina Univ. Greenville, NC, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1986
Publication Information
Publication: NASA. Johnson Space Center NASA/American Society for Engineering Educati
Subject Category
Space Biology
Accession Number
86N31421
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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