Coimbra researchers detect electrical signals from marine microalgae

Researchers at the University of Coimbra's Faculty of Sciences and Technology have developed a technology that detects and analyses electrical signals produced by populations of marine microalgae. Using a porous 3D electrode with very low electrical impedance, the team found that living cells significantly alter recorded electrical fluctuations, and that these patterns change with microalgae concentration. The findings suggest electrochemical 'noise' can carry information about biological activity. The approach, tested on the model organism Phaeodactylum tricornutum, could lead to new monitoring tools for aquatic ecology, aquaculture, water quality and bioelectrochemical systems.