A toxaphene-degrading bacterium related to Enterobacter cloacae, strain D1 isolated from aged contaminated soil in Nicaragua.
Enterobacter sp. strain D1 is a facultative anaerobic, Gram-negative heterotrophic bacterium isolated from toxaphene-contaminated soil. This organism was identified and characterized through phylogenetic and taxonomic studies. Based on 16S rDNA analysis, the strain D1 was clustered closely with the species Enterobacter cloacae subsp. dissolvens (LMG 2683) and E. cloacae (ATCC 13047T). Strain D1 resembled these E. cloacae strains with respect to various biochemical and nutritional characteristics, but also exhibited differences. Moreover, strain D1 is able to grow and survive with toxaphene supplied in the medium in the range 3-96 mg/L. Amongst the chemical components of toxaphene, octachlorocamphenes, nonachlorobornanes and decachlorobornanes were seen to be rapidly metabolized, although levels of hexachlorocamphenes and heptachlorobornanes were found to be slowly degraded, and subsequently accumulated during the last stage of the cultivation.
Lacayo-Romero
Martha
M
Department of Biotechnology, Center of Chemistry & Chemical Engineering, Lund University, P O Box 124, SE-221 00 Lund, Sweden. Martha.Lacayo@biotek.lu.se
Quillaguamán
Jorge
J
van Bavel
Bert
B
Mattiasson
Bo
B
D001673:Biodegradation, Environmental; D004275:DNA, Ribosomal / Q000032:analysis; D016972:Enterobacter cloacae / Q000145:classification* / Q000378:metabolism; D009527:Nicaragua; D010802:Phylogeny; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism; D014112:Toxaphene / Q000378:metabolism*
D004275:DNA, Ribosomal; D012989:Soil Pollutants; D014112:Toxaphene