Abstract:
:Trichloroethylene (TCE) is extensively used in commercial applications, despite its risk to human health via soil and groundwater contamination. The stability of TCE, which is a useful characteristic for commercial application, makes it difficult to remove it from the environment. Numerous studies have demonstrated that TCE can be effectively removed from the environment using bioremediation. Pseudomonas putida F1 is capable of degrading TCE into less hazardous byproducts via the toluene dioxygenase pathway (TOD). Unfortunately, these bioremediation systems are not self-sustaining, as the degradation capacity declines over time. Fortunately, the replacement of metabolic co-factors is sufficient in many cases to maintain effective TCE degradation. Thus, monitoring systems must be developed to predict when TCE degradation rates are likely to decline. Herein, we show evidence that tod expression levels correlate with the ability of P. putida F1 to metabolize TCE in the presence of toluene. Furthermore, the presence of toluene improves the replication of P. putida F1, even when TCE is present at high concentration. These findings may be applied to real world applications to decide when the bioremediation system requires supplementation with aromatic substrates, in order to maintain maximum TCE removal capacity.
journal_name
Biodegradationjournal_title
Biodegradationauthors
Liu J,Amemiya T,Chang Q,Qian Y,Itoh Kdoi
10.1007/s10532-012-9544-ysubject
Has Abstractpub_date
2012-09-01 00:00:00pages
683-91issue
5eissn
0923-9820issn
1572-9729journal_volume
23pub_type
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