期刊
LETTERS IN APPLIED MICROBIOLOGY
卷 72, 期 4, 页码 484-494出版社
OXFORD UNIV PRESS
DOI: 10.1111/lam.13440
关键词
co‐ culture; desulfurization; dibenzothiophene; dibenzothiophene sulfone; Paenibacillus; Vitreoscilla hemoglobin
资金
- TUBITAK [118Y416]
The enhancement of desulfurization activities of Paenibacillus strains 32O-W and 32O-Y was investigated using different sulfur sources, with the co-culture of strains showing the best growth under specific conditions.
Enhancement of the desulfurization activities of Paenibacillus strains 32O-W and 32O-Y were investigated using dibenzothiophene (DBT) and DBT sulfone (DBTS) as sources of sulphur in growth experiments. Strains 32O-W, 32O-Y and their co-culture (32O-W plus 32O-Y), and Vitreoscilla hemoglobin (VHb) expressing recombinant strain 32O-Yvgb and its co-culture with strain 32O-W were grown at varying concentrations (0 center dot 1-2 mmol l(-1)) of DBT or DBTS for 96 h, and desulfurization measured by production of 2-hydroxybiphenyl (2-HBP) and disappearance of DBT or DBTS. Of the four cultures grown with DBT as sulphur source, the best growth occurred for the 32O-Yvgb plus 32O-W co-culture at 0 center dot 1 and 0 center dot 5 mmol l(-1) DBT. Although the presence of vgb provided no consistent advantage regarding growth on DBTS, strain 32O-W, as predicted by previous work, was shown to contain a partial 4S desulfurization pathway allowing it to metabolize this 4S pathway intermediate.
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