Aerobic degradation of cis -dichloroethene by the marine bacterium Marinobacter salsuginis strain 5N-3

[摘要] An aerobic bacterium, designated strain 5N-3 (NBRC 113055), that degrades cis -dichloroethene ( c DCE) was isolated from a sea sediment in Japan. Strain 5N-3 was able to degrade a certain amount of c DCE in the presence of pyruvate without the action of inducers. In the presence of inducers, such as phenol and benzene, the strain completely removed c DCE. By the application of 16S ribosomal RNA (16S rRNA) gene sequencing and average nucleotide identity analyses, the strain 5N-3 was identified as Marinobacter salsuginis . On the other hand, identified species of Marinobacter are not known to degrade c DCE at all. A draft genome sequence analysis of the strain 5N-3 suggested that the dmp-homologous operon (operon for phenol degradation) may be contributing to the aerobic degradation of c DCE. This is the first report on an aerobic marine bacterium that has been found to degrade c DCE.

[学科分类] 微生物学和免疫学

[关键词] aerobic degradation;cDCE;cisdichloroethene;marine bacterium;Marinobacter