During the initiation of nitrogen-fixation nodules,how do the Rhizobium bacteria enter into the cortex of the root?

Question

Quizplus · Accepted Answer

Rhizobium bacteria enter the cortex of the root by forming a tubular structure called an infection thread. The bacteria penetrate the root hair and enter the root cortex through this infection thread. Once inside the root, the bacteria initiate the formation of nitrogen-fixing nodules.

During the Initiation of Nitrogen-Fixation Nodules,how Do the Rhizobium Bacteria