Pseudomonas khazarica sp. nov., a polycyclic aromatic hydrocarbon-degrading bacterium isolated from Khazar Sea sediments

Tarhriz, Vahideh; Nouioui, Imen; Spröer, Cathrin; Verbarg, Susanne; Ebrahimi, Vida; Cortés-Albayay, Carlos; Schümann, Peter; Hejazi, Mohammad Amin; Klenk, Hans‐Peter; Hejazi, Mohammad Saeid

doi:10.1007/s10482-019-01361-w

Cited by 25 publications

(10 citation statements)

References 56 publications

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“…Bacteria of the genus Pseudomonas have a high degradation potential; they are capable of oxidizing a wide range of hydrocarbons including aliphatic 12,13 , mono- 14 , polyaromatic [15][16][17] , methylated and halogenated 18 derivatives. Genes and biochemical pathways for the degradation of straight-chain alkanes and bi-and trinuclear aromatic hydrocarbons are well described 19 .…”

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confidence: 99%

Pseudomonas veronii strain 7–41 degrading medium-chain n-alkanes and polycyclic aromatic hydrocarbons

Mullaeva

Delegan

Streletskii

et al. 2022

Sci Rep

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Pollution of the environment by crude oil and oil products (represented by various types of compounds, mainly aliphatic, mono- and polyaromatic hydrocarbons) poses a global problem. The strain Pseudomonas veronii 7–41 can grow on medium-chain n-alkanes (C8–C12) and polycyclic aromatic hydrocarbons such as naphthalene. We performed a genetic analysis and physiological/biochemical characterization of strain 7–41 cultivated in a mineral medium with decane, naphthalene or a mixture of the hydrocarbons. The genes responsible for the degradation of alkanes and PAHs are on the IncP-7 conjugative plasmid and are organized into the alk and nah operons typical of pseudomonads. A natural plasmid carrying functional operons for the degradation of two different classes of hydrocarbons was first described. In monosubstrate systems, 28.4% and 68.8% of decane and naphthalene, respectively, were biodegraded by the late stationary growth phase. In a bisubstrate system, these parameters were 25.4% and 20.8% by the end of the exponential growth phase. Then the biodegradation stopped, and the bacterial culture started dying due to the accumulation of salicylate (naphthalene-degradation metabolite), which is toxic in high concentrations. The activity of the salicylate oxidation enzymes was below the detection limit. These results indicate that the presence of decane and a high concentration of salicylate lead to impairment of hydrocarbon degradation by the strain.

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confidence: 99%

Pseudomonas veronii strain 7–41 degrading medium-chain n-alkanes and polycyclic aromatic hydrocarbons

Mullaeva

Delegan

Streletskii

et al. 2022

Sci Rep

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“…21 TBZ2 is recently introduced as Pseudomonas khazarica as a novel species. 22 Strain TBZ-SF2 showed 100% similarity in 16S rRNA sequence with S. haliotis JCM 14758 T . 23 Strain TBZ-F1 belongs to the genus Shewanella and its closely related type strain is S. algae JCM 21037 T (99.66% similarity).…”

Section: Resultsmentioning

confidence: 96%

“…The capability of isolates to use of PAHs as the sole sources of carbon, ONR7a medium with naphthalene or phenanthrene or anthracene was prepared. For this purpose, ONR7a medium was prepared based on three solutions, containing: solution "1" with the volume of 500 ml is consisted of NaCl, 22 24.00 mg and solution "3" with the volume of 50 ml composed of FeCl 2 . 4H 2 O, 2.00 mg/ml.…”

Section: Qualitative Bio-degradation Testsmentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons Degradation by Aquatic Bacteria Isolated from Khazar Sea, the World’s Largest Lake

et al. 2020

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Background: Aquatic microorganisms have an important role in the bioremediation of environmental pollutants. Polycyclic Aromatic Hydrocarbons (PAHs) are described as dangerous pollutants that can bind covalently to the nucleic acids, causing mutations. Therefore, they have carcinogenic and toxic properties. Also, are involved in diseases such as asthma, lung dysfunction, and chronic bronchitis. This study aimed to isolate and characterize aquatic bio-degrading bacteria from the world’s largest lake, Khazar, with the ability to use PAHs as only carbon source. Methods: Samples were taken from the estuary of Siah Rud River (Mazandaran province, Iran) and Fereydunkenar beach leading to isolation of twenty-three bacteria on marine agar and sea water media. The isolates were cultured on separate ONR7a medium, each supplemented with only one PAH; as the sole carbon source; including naphthalene, phenanthrene, and anthracene. Results: Eleven bacterial isolates were able to grow on supplemented media: TBZ-E1, TBZ-E2, TBZ-E3, TBZ-S12, TBZ-S16, TBZ-E20, TBZ-SF2, TBZ-F1, TBZ-F2, TBZ-F3 and TBZ2. These isolates belong to Alteromonas, Marivivens, Pseudoalteromonas, Vibrio, Shewanella, Photobacterium, Mycobacterium and Pseudomonas genera. The qualitative analysis showed that the consortium of isolates TBZ-F1, TBZ-F2, TBZ-F3, TBZ-SF2, and TBZ2 displayed the highest degradation rate for phenanthrene and naphthalene. Naphthalene, phenanthrene, and anthracene were potently degraded by TBZ2 and TBZ-SF2 and accordingly were subjected to measure degradation potential of mentioned PAHs. Conclusion: The bacterial isolates of Caspian lake have a critical duty in biodegradation of PAHs. These isolates are representative samples of the bacterial population of this lake, participating in the purification process of this habitat.

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“…Twenty-one potential oil-degrading isolates have been partly verified to be oil degraders in marine environments. Strains of Alcanivorax marinus and Pseudomonas khazarica were successfully isolated and identified as oil-degrading bacteria from marine sediments ( Lai et al, 2013 ; Tarhriz et al, 2020 ; Jagtap et al, 2021 ). In addition, many other members belonging to these two genera were isolated from deep-sea sediments or seawater ( Kimata et al, 2004 ; Liu and Shao, 2005 ; Lai et al, 2013 , 2016 ; Gao et al, 2015 ; Yang et al, 2018 ; Dong et al, 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Degradation potential of alkanes by diverse oil-degrading bacteria from deep-sea sediments of Haima cold seep areas, South China Sea

Lyu

Li²,

Chen³

et al. 2022

Front. Microbiol.

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Marine oil spills are a significant concern worldwide, destroying the ecological environment and threatening the survival of marine life. Various oil-degrading bacteria have been widely reported in marine environments in response to marine oil pollution. However, little information is known about culturable oil-degrading bacteria in cold seep of the deep-sea environments, which are rich in hydrocarbons. This study enriched five oil-degrading consortia from sediments collected from the Haima cold seep areas of the South China Sea. Parvibaculum, Erythrobacter, Acinetobacter, Alcanivorax, Pseudomonas, Marinobacter, Halomonas, and Idiomarina were the dominant genera. Further results of bacterial growth and degradation ability tests indicated seven efficient alkane-degrading bacteria belonging to Acinetobacter, Alcanivorax, Kangiella, Limimaricola, Marinobacter, Flavobacterium, and Paracoccus, whose degradation rates were higher in crude oil (70.3–78.0%) than that in diesel oil (62.7–66.3%). From the view of carbon chain length, alkane degradation rates were medium chains > long chains > short chains. In addition, Kangiella aquimarina F7, Acinetobacter venetianus F1, Limimaricola variabilis F8, Marinobacter nauticus J5, Flavobacterium sediminis N3, and Paracoccus sediminilitoris N6 were first identified as oil-degrading bacteria from deep-sea environments. This study will provide insight into the bacterial community structures and oil-degrading bacterial diversity in the Haima cold seep areas, South China Sea, and offer bacterial resources to oil bioremediation applications.

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Pseudomonas khazarica sp. nov., a polycyclic aromatic hydrocarbon-degrading bacterium isolated from Khazar Sea sediments

Cited by 25 publications

References 56 publications

Pseudomonas veronii strain 7–41 degrading medium-chain n-alkanes and polycyclic aromatic hydrocarbons

Pseudomonas veronii strain 7–41 degrading medium-chain n-alkanes and polycyclic aromatic hydrocarbons

Polycyclic Aromatic Hydrocarbons Degradation by Aquatic Bacteria Isolated from Khazar Sea, the World’s Largest Lake

Degradation potential of alkanes by diverse oil-degrading bacteria from deep-sea sediments of Haima cold seep areas, South China Sea

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