电缆细菌(Cable bacteria)是最近被证实的、普遍存在于水体沉积物中、具有跨越氧化还原环境进行长距离电子传递功能、归属于Desulfobulbaceae科的有机化能营养型长线状细菌。推测：电缆细菌极有可能是有机污染水体沉积物原位修复的重要驱动者；强化电缆细菌的导电活性将有效调动系统中微生物的呼吸和代谢网络，加速有机污染物的原位降解转化。本项目将现场调查与实验室模拟研究紧密结合，在深入探讨电缆细菌对水体沉积物有机污染的响应方式及其对有机污染物原位降解转化的驱动作用基础上，结合微生物原位呼吸调控，提出基于电缆细菌导电活性的有机污染水体沉积物原位修复强化措施，揭示电缆细菌对水体沉积物有机污染的响应与调控机制。本研究将从一个全新的视角揭示有机污染水体沉积物原位修复机理，并有望开辟基于电缆细菌功能活性的水体沉积物原位修复理论和技术研究方向。

Cable bacteria which were chemoorganotrophic filamentous Desulfobulbaceae have been discovered to commonly exist in sediment and efficiently control both the cathodic and anodic reactions and the associated long-distance electron transport. However, the function of cable bacteria for in-situ remediation of organic polluted aquatic sediments is presently known. We hypothesize that cable bacteria would play important roles in in-situ remediation of organic polluted aquatic sediments; the sediment microbial respiration and metabolic networks would be significantly regulated by the enhancements of conductivities of cable bacteria, consequently promoting the in-situ biodegradation of organic pollutants. In this project, a suite of remediation technologies and advanced microbial eco-physiological approaches will be combined to explore the function and enhancement mechanisms of cable bacteria to in in-situ remediation of organic polluted aquatic sediments. The responses of cable bacteria to organic pollution and the functions of cable bacteria on the biodegradation of organic pollutants in sediments will be determined by combining the field investigations and laboratory experiments. Furthermore, the relationships between the conductivities of cable bacteria and the efficiencies of in-situ remediation will be illuminated by microbial respiration regulations. The possible enhancement strategies and mechanisms for in-situ remediation of organic polluted aquatic sediments based on the conductivity of cable bacteria will also be proposed. The study aims to provide new insights into the in-situ remediation of organic polluted aquatic sediments and lead the new theories and technologies for in-situ sediment bioremediation based on the functions of cable bacteria.