2 Hydrocarbon-Degrading Sphingomonads: Sphingomonas, Sphingobium, Novosphingobium, and Sphingopyxis

摘要: Hydrocarbon-degrading members of the Sphingomonadaceae (Sphingomonas, Sphingobium, Novosphingobium, and Sphingopyxis) are common gram-negative, aerobic organisms that have been isolated from a wide variety environments, including temperate polar soils, marine sediments, plant tissues where they occur as endophytes. They degrade broad range monoand polycyclic aromatic compounds, genetics enzymology these processes elucidated in some detail. In sphingomonads biodegradation gene loci often widely distributed on genome not co-localized other hydrocarbon-degrading genera, which has hindered genetic manipulation, but nonetheless potent candidates for bioremediation applications. Sphingomonad strains easily cultivable, recent results suggest their role degradation recalcitrant aromatics contaminated soils situ may be less than previously thought.