MIT Engineers Build Living Transistors From Bacteria
MIT researchers have developed a novel approach to biological computing by engineering bacteria to function as living transistors. These bacterial transistors can be wired together into circuits capable of performing calculations and directing chemical signals.
A transistor acts as a switch or amplifier for electronic signals. The MIT team engineered bacteria to respond to specific chemical inputs and produce corresponding outputs, mimicking this fundamental switching behavior using biological processes. By connecting multiple bacterial transistors, the researchers built simple circuits that can process information and trigger defined responses.
The potential applications extend to agriculture, where engineered bacteria could be applied to plant roots or leaves. Such systems might detect environmental threats like pathogens or pollutants and automatically trigger defensive responses, effectively giving plants a built-in early warning and protection system.
This work represents a step toward practical biological computers that operate using living cells rather than silicon, potentially offering advantages in self-repair and integration with natural systems.