Biodegradation of dioxin by a newly isolated Rhodococcus sp. with the involvement of self-transmissible plasmids
Biodegradation of dioxin by a newly isolated Rhodococcus sp. with the involvement of self-transmissible plasmids
复制标题
DOI：
10.1007/s00253-012-4363-y
复制
发表时间：
2013-06
影响因子：
5
通讯作者：
Peng Peng-Peng;Haiyan Yang;R. Jia;Li Li-Li
中科院分区：
文献类型：
--
作者：
Peng Peng-Peng;Haiyan Yang;R. Jia;Li Li-Li
A newly isolatedRhodococcussp. strain p52 could aerobically utilize dibenzofuran as the sole source of carbon and energy, and completely remove dibenzofuran at 500 mg l−1within 48 h. The strain metabolizes dibenzofuran by initial angular dioxygenation to yield 2,2′,3-trihydroxybiphenyl. Strain p52 could also remove 70 % of 100 mg l−12-chlorodibenzofuran within 96 h and could metabolize a variety of aromatic compounds, namely dibenzo-p-dioxin, 2,8-dichlorodibenzofuran, dibenzothiophene, biphenyl, naphthalene, fluorene, phenanthrene, anthracene, carbazole, indole, xanthene, phenoxathiin, xanthone, and 9-fluorenone. Two distinct gene clusters encoding angular dioxygenases (DbfA and DfdA) were amplified and sequenced. ThedbfAanddfdAgene clusters are located on two circular plasmids, pDF01 and pDF02, respectively. Both plasmids are self-transmissible; that is, they can transfer to the Gram-positive bacteriumBacillus cereusby conjugation.
