Study of the Hydrocarbon-oxidizing Activity of Bacteria of the Genera Pseudomonas and Rhodococcus

Abstract

The selective activity of hydrocarbon-oxidizing microorganisms with regard to the degradation of alkanes, cycloalkanes, arenes was presented. The hydrocarbon-oxidizing activity of microorganisms of the genera Rhodococcus and Pseudomonas such as heptane, cyclohexane, toluene within the hydrocarbons destruction was determined. The growth rate for various hydrocarbons differs. Thus, the average specific growth rate of hydrocarbon-oxidizing microorganism (HOM) of the genus Rhodococcus is twice more than these substrates

Hydrocarbon biodegradation potential of microbial communities from high Arctic beaches in Canada's Northwest Passage

“…While there were no significant differences between genera, community richness or effective number of species between nutrient-amended and unamended treatments, the significant differential abundance of Pseudomonas and Rhodococcus and significantly greater species richness and effective number of species in the 55-day oil microcosms relative to unoiled control microcosms suggest these two genera may be being selected for to degrade heavy marine fuel as part of a richer and more diverse community. Both genera are well characterized with oil degradation (Astashkina et al 2015), including in polar environments (Chong et al 2018;Rizzo et al 2019) and the dominance of Pseudomonas and Rhodococcus in 16S rRNA gene clone libraries has been previously reported in oiled arctic shoreline sediments in Norway (Grossman et al 1999). Moreover, in the 55-day fuel contaminated microcosms, Pseudomonas was associated to alkB, ncr and phnAc genes, while Rhodococcus was associated to alkB, ncr and CYP153 genes.…”

Protatranes, effective growth biostimulants of hydrocarbon-oxidizing bacteria from Lake Baikal, Russia

“…2), which considerably differ in their physiological and biochemical properties from each other [35,38]. In addition, microorganisms of the genus Rhodococcus have previously shown higher growth rates and generation times than those of the genus Pseudomonas while growing on hydrocarbon substrates [40].

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Microbiological synthesis of methyl ethyl ketone

“…are of the greatest interest [22][23][24][25]. A variety of biosynthetic and catabolic reactions, high growth rate on the simple composition media, opportunities for genetically engineered manipulation can be considered as a promising object for works in the field of biotechnology [23,26].…”

“…Therefore, it was important to examine the viability of bacteria on the mineral medium using only alcohols as a carbon source. According to published data [22][23] submerged cultivation. At the same time they accumulate biomass, which is rich in amino acids and vitamins.…”