Coexisting bacterial populations responsible for multiphasic mineralization kinetics in soil.

摘要: Experiments were conducted to study populations of indigenous microorganisms capable mineralizing 2,4-dinitrophenol (DNP) in two soils. Previous kinetic analyses indicated the presence coexisting DNP-mineralizing a forest soil (soil 1). Studies which eucaryotic and procaryotic inhibitors added this that both bacterial. Most-probable-number counts with media containing different concentrations DNP more bacteria could mineralize low than metabolize high it. Enrichments varying various combinations consistently resulted isolation same species from 1. This contained large number variety fungi, but no fungi isolated. The bacterial isolates identified as Janthinobacterium sp. Rhodococcus had μmax Km for mineralization, whereas much higher values parameters. These differences between similar seen when was incubated DNP. Values incubations obtained pure culture studies. In contrast, Ks showed greater variation results help confirm predictions physiologically distinct are responsible multiphasic mineralization kinetics observed studied.