Effect of space flight conditions on properties of hydrocarbon-oxidizing bacteria |
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Authors: | Ermolenko Z M Martovetskaia V A Chugunov V A Kholodenko V P |
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Institution: | State Research Center of Applied Microbiology, Obolensk, Moscow oblast, 142279 Russia. |
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Abstract: | Results of experiments on the Mir space station (EO-25 and EO-26) demonstrated that the conditions of orbital flight, primarily the cosmic radiation, was a mutagenic factor affecting both the genotype and phenotype of an oil-oxidizing bacterial strain, Mycobacterium flavescens EX-91. The emerging mutants differed from original culture by the rate of colony growth and the ability to ferment certain carbohydrates or synthesize beta-galactosidase. Changes in the rate of utilization of raw oil and individual hydrocarbon types (constituting model mixtures) suggest that cosmic radiation may serve as a means of obtaining mutant clones of microorganisms with new properties. |
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