Utilization of arylaliphatic nitriles by haloalkaliphilic Halomonas nitrilicus sp. nov. isolated from soda soils

Utilization of arylaliphatic nitriles by haloalkaliphilic Halomonas nitrilicus sp. nov. isolated from soda soils

Chmura, A.
Shapovalova, A.A.
Van Pelt, S.
Van Rantwijk, F.
Tourova, T.P.
Muyzer, G.
Sorokin, D.Y.

Applied Sciences

Biotechnology

2008-09-16

An enrichment culture from saline soda soils, using acetate as carbon and energy source and 2- phenylpropionitrile as nitrogen source (PPN) at pH 10, resulted in the isolation of strain ANL-?CH3. The strain was identified as a representative of the genus Halomonas in the Gammaproteobacteria. The bacterium was capable of PPN utilization as a nitrogen source only, while phenylacetonitrile (PAN) served both as carbon, energy and nitrogen source. This capacity was not described previously for any other haloalkaliphilic bacteria. Apart from the nitriles mentioned above, resting cells of ANL- ?CH3 also hydrolyzed mandelonitrile, benzonitrile, acrylonitrile, and phenylglycinonitrile, presumably using nitrilase pathway. Neither nitrile hydratase nor amidase activity was detected. The isolate showed a capacity to grow with benzoate and salicylate as carbon and energy source and demonstrated the ability to completely mineralize PAN. These clearly indicated a potential to catabolize aromatic compounds. On the basis of unique phenotype and distinct phylogeny, strain ANL-?CH3 is proposed as a novel species of the genus Halomonas—Halomonas nitrilicus sp. nov.

nitriles
phenylpropionitrile (PPN)
phenylacetonitrile (PAN)
haloalkaliphilic
halomonas
nitrilase

http://resolver.tudelft.nl/uuid:ce5c732d-2713-4be8-8eab-0c9be86e4ce5

Springer

0175-7598

Applied Microbiology and Biotechnology, 81 (2), 2008

Institutional Repository

journal article

(c) 2008 Chmura, A. et al. ; Springer