10.6084/M9.FIGSHARE.21571842.V2
Jialu Li
Jialu
Li
Mei Hong
Mei
Hong
Rui Tang
Rui
Tang
Tingchen Cui
Tingchen
Cui
Yadong Yang
Yadong
Yang
Jing Lv
Jing
Lv
Na Liu
Na
Liu
Yutao Lei
Yutao
Lei
Isolation of <i>Diaphorobacter</i> sp. LW2 capable of degrading Phenanthrene and its migration mediated by <i>Diaphorobacter</i>
<p>Phenanthrene, one of the polycyclic aromatic hydrocarbons, is stubborn and persistent and exists widely in petroleum-contaminated soil. Filamentous fungi are good assistants to bacterial transport, by hyphae passing through soil pores and reaching further positions. An isolated bacterial strain, from the contaminated soil of the coking plant, was identified as <i>Diaphorobacter</i> and named LW2, which could use phenanthrene as the only carbon source and energy for its growth. LW2 could degrade phenanthrene in a wide range of pH, temperature and initial concentration. When pH was 6 and 10, the removal rate of phenanthrene was 38.59% and 76.44%, respectively, and the removal rate of phenanthrene was 68.25% at 15 â. And LW2 could degrade 86.64% phenanthrene when the initial concentration was 100â
mg L<sup>â1</sup>. The detection of DI-N-octyl phthalate, phthalic acid and p-hydroxybenzoic acid revealed that the strain LW2 metabolised phenanthrene through the phthalic acid pathway. Meanwhile, swimming and swarming test results suggested that LW2 was motile. The auxiliary effect of <i>Pythium ultimum</i> on LW2 migration was assessed. In the presence of <i>Pythium ultimum</i>, LW2 could migrate within the range of centimters by its mycelium, which was also observed by fluorescence microscopy. Meanwhile, the degradation ability of LW2 after the migration was also explored. The results proved that the migration process had no significant effect on its degradation ability, and LW2 still showed good phenanthrene metabolism ability. This study provides more possibilities for the bioremediation of phenanthrene-contaminated soil by screening the degradation bacteria and testing the effect of fungi on its migration.</p>
Biophysics
Microbiology
Biotechnology
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Ecology
Biological Sciences not elsewhere classified
Taylor & Francis
2022
2022-11-23
2024-03-01
Journal contribution
1308819 Bytes
10.6084/m9.figshare.21571842
10.1080/09593330.2022.2145914
CC BY 4.0