期刊
ENVIRONMENTAL POLLUTION
卷 194, 期 -, 页码 246-253出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2014.07.024
关键词
Rare biosphere; Keystone species; PAH-degraders; PAH-tolerant bacteria; DNA-SIP pyrosequencing
资金
- 'IBISCUS' project - Continental and Coastal Ecosphere (EC2CO) program from the Centre National de la Recherche Scientifique (CNRS)
- Institut des Sciences de l'Univers (INSU)
By coupling DNA-SIP and pyrosequencing approaches, we identified Cycloclasticus sp. as a keystone degrader of polycyclic aromatic hydrocarbons (PAH) despite being a member of the 'rare biosphere' in NW Mediterranean seawaters. We discovered novel PAH-degrading bacteria (Oceanibaculum sp., Sneathiella sp.) and we identified other groups already known to possess this function (Alteromonas sp., Paracoccus sp.). Together with Cycloclasticus sp., these groups contributed to potential in situ phenanthrene degradation at a rate >0.5 mg l(-1) day(-1), sufficient to account for a considerable part of PAH degradation. Further, we characterized the PAH-tolerant bacterial communities, which were much more diverse in the polluted site by comparison to unpolluted marine references. PAH-tolerant bacteria were also members of the rare biosphere, such as Glaciecola sp. Collectively, these data show the complex interactions between PAH-degraders and PAH-tolerant bacteria and provide new insights for the understanding of the functional ecology of marine bacteria in polluted waters. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据