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  • ecological roles and release patterns of acylated homoserine lactones in pseudomonas sp. hf-1 and their implications in bacterial bioaugmentation

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 523
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     to enable development of a better bacterial bioaugmentation system for tobacco wastewater treatment, the roles and release patterns of acylated homoserine lactones (ahls) in pseudomonas sp. hf-1 were evaluated. swarming was found to be induced byn-hexanoyl-homoserine lactone (c6-hsl) and n-3-oxo-hexanoyl-homoserine lactone (3-oxo-c6-hsl); the formation of extracellular polymeric substances (eps) was induced by 3-oxo-c6-hsl, c6-hsl and n-3-oxo-octanoyl-homoserine lactone (3-oxo-c8-hsl); and biofilm formation was induced by c6-hsl and 3-oxo-c8-hsl. when the culture conditions were 25 °c, ph 5–6, 3% inoculum, 1.5 g l−1 nicotine and 1% nacl, the amount of ahls released was sufficient for quorum sensing of swarming and eps formation for strain hf-1, which was beneficial to the startup stage during bioaugmentation. when strain hf-1 was cultured at ph 8 in the presence of 1.2–1.8 g l−1 of nicotine and 1% nacl, the threshold for quorum sensing of biofilm formation was reached and the bioaugmentation system showed an efficient performance.

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