Ma Meng, Gao Wei, Li Qian, Han Bin, Zhu Aimei, Yang Huanghao, Zheng Li
Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China; College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China.
Key Laboratory of Marine Eco-Environmental Science and Technology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China.
Mar Pollut Bull. 2021 Oct;171:112770. doi: 10.1016/j.marpolbul.2021.112770. Epub 2021 Sep 4.
Studies have reported that various hydrocarbons and hydrocarbon-degrading bacteria are found in global deep-sea hydrothermal regions. However, little is known about degradation characteristics of culturable hydrocarbon-degrading bacteria from these regions. We speculate that these bacteria can be used as resources for the bioremediation of oil pollution. In this study, six oil-degrading consortia were obtained from the hydrothermal region of the Southern Mid-Atlantic Ridge through room-temperature enrichment experiments. The dominant oil-degrading bacteria belonged to Nitratireductor, Pseudonocardia, Brevundimonas and Acinetobacter. More varieties of hydrocarbon-degrading bacteria were obtained from sediments (preserved at 4 °C) near hydrothermal vents. Most strains had the ability to degrade high molecular weight petroleum components. In addition, Pseudonocardia was shown to exhibit a high degradation ability for phytane and pristine for the first time. This study may provide new insights into the community structure and biodiversity of culturable oil-degrading bacteria in deep-sea hydrothermal regions.
研究报告称，全球深海热液区域存在各种碳氢化合物和碳氢化合物降解细菌。然而，对于这些区域可培养的碳氢化合物降解细菌的降解特性知之甚少。我们推测这些细菌可作为石油污染生物修复的资源。在本研究中，通过室温富集实验从南大西洋中脊热液区域获得了六个石油降解菌群。主要的石油降解细菌属于硝酸盐还原菌属、假诺卡氏菌属、短波单胞菌属和不动杆菌属。从热液喷口附近的沉积物（保存在4°C）中获得了更多种类的碳氢化合物降解细菌。大多数菌株具有降解高分子量石油成分的能力。此外，首次发现假诺卡氏菌对植烷和 pristane 具有较高的降解能力。本研究可能为深海热液区域可培养的石油降解细菌的群落结构和生物多样性提供新的见解。
