the genus rhodococcus is gram positive bacterium which was classified into the family of nocardiaceae. the organism can be isolates from different sources, with capability to degrade diverse types of pollutant. nowadays, scientists reported a few secondary metabolites which are produced by rhodococci. hence, the present study tried to isolate rhodococci from different soil samples with the capa...

the precipitation of calcium carbonate by bacteria isolated from submerged fixed-film bioreactorused for the treatment of urban wastewater in both natural and artificial media was studied. however, carbonate precipitation was detected only when the bacteria grow in media added with calcium. precipitation took place rapidly, and crystal formation began 3 d after inoculation and the percentage of...

The sequences of the 16S rRNA and haloalkane dehalogenase (dhaA) genes of five gram-positive haloalkane-utilizing bacteria isolated from contaminated sites in Europe, Japan, and the United States and of the archetypal haloalkane-degrading bacterium Rhodococcus sp. strain NCIMB13064 were compared. The 16S rRNA gene sequences showed less than 1% sequence divergence, and all haloalkane degraders c...

The dsz biodesulfurization cluster from Rhodococcus erythropolis IGTS8 has been engineered under the control of heterologous broad-host-range regulatory signals to alleviate the mechanism of sulfur repression, and it was stably inserted into the chromosomes of different Pseudomonas strains. The recombinant bacteria were able to desulfurize dibenzothiophene more efficiently than the native host....

Hydrophobic Actinobacteria are commonly associated with the stabilization of foams in activated sludge systems. One possible attractive approach to control these foam-stabilizing organisms is the use of specific bacteriophages. We describe the genome characterization of a novel polyvalent DNA phage, GTE2, isolated from activated sludge. This phage is lytic for Gordonia terrae, Rhodococcus globe...

Hydrogen peroxide (H2O2) tolerance of Rhodococcus sp. strain APG1, previously isolated from the aquatic fern Azolla pinnata, was examined in relation to nitric oxide (NO) production by cells cultured on a variety of C sources. Cells inoculated onto A. pinnata fronds established a surface-sterilant resistant density of 2-4x10(7) cells g(-1) without causing disease. Compared to cultures containin...

Bacteria were enriched from soil samples with succinate as a carbon source and racemic naproxen nitrile [2-(6-methoxy-2-naphthyl)propionitrile] as sole source of nitrogen. Since naproxen nitrile was only poorly soluble in water media amended with different water-immiscible organic phases were used for the enrichments. With pristane (2,6,10,14-tetramethylpentadecane) as the organic phase two bac...

Dear editor,I read with interest article that published entitled *Isolation and identification of bioactive compound producing Rhodococcus spp. isolated from soil samples {IJMCM/5(1) (2015) 463-468}* [1]. Some of the genus such as Nocardia, Gordonia, Mycobacterium and Rhodococcus are in actinomycete family and they are Gram-positive and partially acid-fast. Rhodococcus species usually stain Gra...

Microbes capable of degrading pollutant such as 1,4-dioxane were selected from the seawater samples of four coastal areas of Okinawa located in the most southern islands of Japan using the developed method and a seawater-charcoal perfusion apparatus. Specifically, aerobic culture in the apparatus led to the selection of candidate 1,4-dioxane degraders. Among these, strain RM-31 and KY-3 exhibit...

The aim of the research was to investigate whether different doses ash from biomass combustion (Salix viminalis L. willow) have an impact on number and community soil bacteria. experiment carried out podzolic chernozem soils in a one-way field (control, NPK, 100, 200, 300, 400, 500 kg K2Oha?1). characterized by pH 12.83 ± 0.68 high content macronutrients. Samples were taken 0–5 cm layer under c...