Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides

Brazilian Journal of Microbiology

Sandeep Bisht²  Piyush Pandey²  Anchal Sood²  Shivesh Sharma²  N. S. Bisht¹ 

[1] ,Institute of Biomedical Sciences and Research Department of Microbiology, S.B.S (P.G.) Uttarakhand,India

关键词: Biodegradation;    Chemotaxis;    Anthracene;    Naphthalene;   

DOI  :  10.1590/S1517-83822010000400011

来源: SciELO

【 摘 要 】

Several naphthalene and anthracene degrading bacteria were isolated from rhizosphere of Populus deltoides, which were growing in non-contaminated soil. Among these, four isolates, i.e. Kurthia sp., Micrococcus varians, Deinococcus radiodurans and Bacillus circulans utilized chrysene, benzene, toluene and xylene, in addition to anthracene and naphthalene. Kurthia sp and B. circulans showed positive chemotactic response for naphthalene and anthracene. The mean growth rate constant (K) of isolates were found to increase with successive increase in substrate concentration (0.5 to 1.0 mg/50ml). B. circulans SBA12 and Kurthia SBA4 degraded 87.5% and 86.6% of anthracene while, Kurthia sp. SBA4, B. circulans SBA12, and M. varians SBA8 degraded 85.3 %, 95.8 % and 86.8 % of naphthalene respectively after 6 days of incubation as determined by HPLC analysis.

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