Laboratoire de Microbiologie Géochimie et Ecologie Marines, CNRS/INSU, UMR 6117, Centre d'Océanologie de Marseille, Université de la Méditerranée, Campus de Luminy, Case 901, Marseille Cedex 9, France.
Lett Appl Microbiol. 2010 Feb;50(2):234-6. doi: 10.1111/j.1472-765X.2009.02766.x. Epub 2009 Oct 31.
To isolate and identify alkane-degrading bacteria from deep-sea superficial sediments sampled at a north-western Mediterranean station.
Sediments from the water/sediment interface at a 2400 m depth were sampled with a multicorer at the ANTARES site off the French Mediterranean coast and were promptly enriched with Maya crude oil as the sole source of carbon and energy. Alkane-degrading bacteria belonging to the genera Alcanivorax, Pseudomonas, Marinobacter, Rhodococcus and Clavibacter-like were isolated, indicating that the same groups were potentially involved in hydrocarbon biodegradation in deep sea as in coastal waters.
These results confirm that members of Alcanivorax are important obligate alkane degraders in deep-sea environments and coexist with other degrading bacteria inhabiting the deep-subsurface sediment of the Mediterranean.
The results suggest that the isolates obtained have potential applications in bioremediation strategies in deep-sea environments and highlight the need to identify specific piezophilic hydrocarbon-degrading bacteria (HCB) from these environments.
从西北地中海一个站位采集的深海表层沉积物中分离和鉴定烷烃降解细菌。
在法国地中海沿岸的 ANTARES 站位，使用多管从 2400 米水深的水/沉积物界面采集沉积物，并立即用玛雅原油作为唯一的碳源和能源进行富集。分离到属于 Alcanivorax、Pseudomonas、Marinobacter、Rhodococcus 和类似 Clavibacter 的烷烃降解细菌，表明在深海中与沿海水域一样，相同的菌属可能参与了烃类生物降解。
这些结果证实了 Alcanivorax 属的成员是深海环境中重要的专性烷烃降解菌，与栖息在地中海深部底泥中的其他降解菌共存。
研究结果表明，所获得的分离物在深海环境的生物修复策略中有潜在的应用，并强调需要从这些环境中鉴定特定的嗜压烃降解菌（HCB）。
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