期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 23, 期 22, 页码 23043-23056出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-016-7500-9
关键词
Bioaugmentation; Dioxygenase; MiSeq technology; PAHs; Rhamnolipids; Rhamnosylotransferase
资金
- National Science Centre in Poland [2011/03/B/NZ9/00274, DEC-2012/07/D/NZ9/00981]
The aim of this study was to evaluate the effect of bioaugmentation and addition of rhamnolipids on the biodegradation of PAHs in artificially contaminated soil, expression of genes crucial for the biodegradation process (PAHRHD alpha GN, PAHRHD alpha GP), and the synthesis of rhamnolipids as well as population changes in the soil bacterial metabiome. The positive effect of bioaugmentation and addition of rhamnolipids on the bioremediation of the majority of PAHs was confirmed during the early stages of treatment, especially in case of the most structurally complicated compounds. The results of metagenomic analysis indicated that the initial changes in the soil metabiome caused by bioaugmentation diminished after 3 months and that the community structure in treated soil was similar to control. The survival period of bacteria introduced into the soil via bioaugmentation reached a maximum of 3 months. The increased expression of genes observed after addition of PAH into the soil also returned to the initial conditions after 3 months.
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