We find that $Rhizobium$ forms nodules on the roots of leguminous plants. Also,$Frankia$,another microbe,forms nitrogen-fixing nodules on the roots of the non-leguminous plant $Alnus$. Can we artificially induce the property of nitrogen fixation in a plant,whether leguminous or non-leguminous?

(N/A) Scientists have attempted to adopt artificial methods to induce nitrogen fixation in both leguminous and non-leguminous plants. However,the success rate is very low because the genetic makeup and the specific host-microbe signaling pathways play a critical and complex role in the formation of functional nitrogen-fixing nodules.