Verification of Degradation of <Emphasis Type="Italic">n</Emphasis>-Alkanes in Diesel Oil by <Emphasis Type="Italic">Pseudomonas aeruginosa</Emphasis> Strain WatG in Soil Microcosms |
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| Authors: | Akio?Ueno Mohammad?Hasanuzzaman Isao?Yumoto Email author" target="_blank">Hidetoshi?OkuyamaEmail author |
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| Institution: | (1) Laboratory of Environmental Molecular Biology, Graduate School of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo Hokkaido, 060-0810, Japan;(2) ROM Co. Ltd, Chuo-ku, Sapporo Hokkaido, 064-0804, Japan;(3) Genomic Resources & Environmental Adaptation Research Group, Research Institute of Genome-based Biofactory, National Institute of Advanced Industrial Science and Technology (AIST), Toyohira-ku, Sapporo Hokkaido, 062-8517, Japan |
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| Abstract: | Degradation of n-alkanes in diesel oil by Pseudomonas aeruginosa strain WatG (WatG) was verified in soil microcosms. The total petroleum hydrocarbon (TPH) degradation level in two bioaugmentation
samples was 51% and 46% for 1 week in unsterilized and sterilized soil microcosms, respectively. The TPH degradation in the
biostimulation was of control level (15%). The TPH degradation in aeration-limited samples was clearly reduced when compared
with that in aeration-unlimited ones under both sterilized and unsterilized conditions. Addition of WatG into soil microcosms
was accompanied by dirhamnolipid production only in the presence of diesel oil. These findings suggest that degradation of
n-alkanes in diesel oil in soil microcosms would be facilitated by bioaugmentation of WatG, with production of dirhamnolipid,
and also by participation of biostimulated indigenous soil bacteria. |
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