Root Nodules of a Legume (IMAGE) John Innes Centre Caption Nodules on the roots of peas and beans help the plant to secure its own nitrogen, reducing the need for artificial fertiliser. Professor Giles Oldroyd's group is researching how this could be applied to other crops. Credit The John Innes Centre Usage Restrictions Please credit the John Innes Centre License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.