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Updated: Jul 3, 2026

Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
[Change of oil-degrading activity in microorganisms stored under laboratory conditions]
Abstract:
Change of the oil-degrading activity was studied in psychrophilic microbial strains Rhodococcus spp. DS-07, DS-21 and Pseudomonas spp. DS-09, DS-22 maintained on various media: rich and synthetic with a selective agent. After 2.5 years of storage on rich medium, the oil-degrading activity decreased by 50-60%, whereas this decrease was insignificant in the medium with oil. Passages to selective medium with oil after the storage partly restored the activity. It was found that storage of oil-degrading microorganisms caused loss of biodegradation plasmids. Their recovery and long-term preservation demand the presence of the selective agent in the medium.
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