Conversion of the Pseudomonas aeruginosa Quinolone Signal and Related Alkylhydroxyquinolines by Rhodococcus sp. Strain BG43.

Study of Desulfurization Rate in Rhodococcus FMF Native Bacterium

The Rhodococcus FMF (R. FMF) native bacterium was isolated from soil contaminated with oil in Tabrizrefinery. This bacterium carries three genes sox (dszA, B, C) on its genomic DNA. Preliminary studieshave proved that R. FMF strain possess desulfurization activity. In this work soxA and B genes wereamplified by PCR, after designing a pair of suitable primers. Analysis of PCR p...

Conversion of the Pseudomonas aeruginosa Quinolone Signal ( PQS ) and Related

Two distinct pathways supply anthranilate as a precursor of the Pseudomonas quinolone signal.

Pseudomonas aeruginosa is an opportunistic pathogen that causes serious infections in immunocompromised patients and those with cystic fibrosis (CF). This gram-negative bacterium uses multiple cell-to-cell signals to control numerous cellular functions and virulence. One of these signals is 2-heptyl-3-hydroxy-4-quinolone, which is referred to as the Pseudomonas quinolone signal (PQS). This sign...

Isolation and Identification of a Sulfide/Sulfoxide Monooxygenase Gene from a Newly Isolated Rhodococcus Sp. Strain FMF

Rhodococcus FMF is a gram-positive bacterium isolated for the first time from soil samples of Tabriz refinery in Iran. This microorganism is able to catabolize dibenzothiophene to 2-hydroxybiphenyl and inorganic sulfur without the destruction of carbon-carbon bonds. Three structural genes, dszA, dszB, and dszC have been characterized and shown to be responsible for this phenotype. In this work,...

Dissipation of butachlor by a new strain of Pseudomonas sp. isolated from paddy soils

Butachlor (BUT) is a chloroacetanilide herbicide widely applied to rice paddies to control annual grass and broad-leaf weeds. A BUT-degrading bacterial strain (PK) was isolated from paddy soils. Biochemical and 16S rRNA sequencing characteristics confirmed the strain as Pseudomonas aeruginosa (99% resemblance). The isolate dissipated BUT (100 μg/mL) in an M9 liquid medium with a rate of 0.5 ± 0...