In nature, microbiologically influenced corrosion (MIC) is often caused by multi-species biofilms rather than single-species biofilms. In this work, the MIC of 316L stainless steel (SS) was investigated in the presence of individual and mixed consortium biofilms of Shewanella oneidensis and Bacillus licheniformis through electrochemical and surface characterizations. Results revealed that MIC of 316L SS was significantly accelerated by the biofilm consortium of S. oneidensis and B. licheniformis compared to single-species biofilms. It was found that the electron shuttle riboflavin secreted by S. oneidensis was utilized by B. licheniformis to accelerate the MIC of 316L SS, providing a new insight into multi-species microbial collaborations in extracellular electron transfer (EET)-MIC.

在自然界中，微生物影响的腐蚀（MIC）通常是由多种生物膜而不是单一生物膜引起的。在这项工作中，通过电化学和表面表征，在存在沙瓦氏假单胞菌和地衣芽孢杆菌的单个和混合财团生物膜的情况下，对316L不锈钢（SS）的MIC进行了研究。结果显示，与单物种生物膜相比，沙门氏菌和地衣芽孢杆菌的生物膜联盟显着促进了316L SS的MIC 。发现地衣芽孢杆菌利用了由拟南芥分泌的电子穿梭核黄素。 以加速316L SS的MIC，从而为细胞外电子转移（EET）-MIC中的多种微生物协作提供新的见解。