School of Chemical Engineering and Bioengineering, Voiland College of Engineering and Architecture Washington State University, Pullman, WA, United States.
Department of Microbiology, Genetics and Immunology, Michigan State University, East Lansing, MI, United States.
Curr Opin Biotechnol. 2024 Dec;90:103222. doi: 10.1016/j.copbio.2024.103222. Epub 2024 Nov 5.
This review presents current knowledge on applying bioelectrochemical sensors to monitor soil fertility through microbial activity and discusses future perspectives. Soil microbial activity is considered an indicator of soil fertility due to the interconnected relationship between soil nutrient composition, microbiome, and plant productivity. Similarities between soils and bioelectrochemical reactors provide the foundation for the design of bioelectrochemical sensors driven by microorganisms enriched as electrochemically active biofilms on polarized electrodes. The biofilm can exchange electrons with electrodes and metabolites with the nearby microbiome to generate electrochemical signals that inform of microbiome functions and nutrient bioavailability. Such mechanisms can be harnessed as a bioelectrochemical sensor for proxy monitoring of soil fertility to address the need for real-time monitoring of soils.
本综述介绍了当前应用生物电化学传感器通过微生物活性监测土壤肥力的知识，并讨论了未来的展望。由于土壤养分组成、微生物组和植物生产力之间的相互关系，土壤微生物活性被认为是土壤肥力的一个指标。土壤和生物电化学反应器之间的相似性为设计生物电化学传感器提供了基础，这些传感器由在极化电极上富集的作为电化学活性生物膜的微生物驱动。生物膜可以与电极交换电子，并与附近的微生物组交换代谢物，从而产生电化学信号，告知微生物组的功能和养分生物利用度。这些机制可以被用作生物电化学传感器，用于代理监测土壤肥力，以满足对土壤实时监测的需求。
