Extracellular Polyhydroxyalkanoate Depolymerase by Acidovorax sp. DP5

Extracellular Polyhydroxyalkanoate Depolymerase by Acidovorax sp. DP5.

Bacteria capable of degrading polyhydroxyalkanoates (PHA) by secreting extracellular depolymerase enzymes were isolated from water and soil samples collected from various environments in Malaysia. A total of 8 potential degraders exhibited clear zones on poly(3-hydroxybutyrate) [P(3HB)] based agar, indicating the presence of extracellular PHA depolymerase. Among the isolates, DP5 exhibited the ...

Acidovorax soli sp. nov., isolated from landfill soil.

A Gram-negative, aerobic, rod-shaped, non-motile strain, BL21(T), was isolated from landfill soil in Pohang, Korea. Strain BL21(T) grew optimally at pH 7.0, 30 °C and 0 % NaCl (w/v). Phylogenetic analysis based on 16S rRNA gene sequence indicated that strain BL21(T) belonged to the class Betaproteobacteria and was related to the genus Acidovorax. The 16S rRNA gene sequence of strain BL21...

Acidovorax radicis sp. nov., a wheat-root-colonizing bacterium.

Strain N35(T) was isolated from surface-sterilized wheat roots and is a Gram-negative, aerobic, motile straight rod. Strain N35(T) tested oxidase-positive and catalase-negative and grew optimally at pH 7.0, 30 °C and in the absence of NaCl. 16S rRNA gene sequence analysis showed over 97 % sequence similarity to strains of the environmental species Acidovorax delafieldii, A. facilis, A. defluvii...

Induction of nitrate-dependent Fe(II) oxidation by Fe(II) in Dechloromonas sp. strain UWNR4 and Acidovorax sp. strain 2AN.

We evaluated the inducibility of nitrate-dependent Fe(II)-EDTA oxidation (NDFO) in non-growth, chloramphenicol-amended, resting-cell suspensions of Dechloromonas sp. strain UWNR4 and Acidovorax sp. strain 2AN. Cells previously incubated with Fe(II)-EDTA oxidized ca. 6-fold more Fe(II)-EDTA than cells previously incubated with Fe(III)-EDTA. This is the first report of induction of NDFO by Fe(II).

Extracellular tannase production by endophytic Hyalopus sp.