Pathway to Higher Yield (IMAGE) Cold Spring Harbor Laboratory Caption This is an immature maize ear with a mutation in a newly identified stem cell factor that affects plant growth. Note the irregular shape of the tip of the ear, the stem cell reservoir called the meristem. Tweaking the working of a receptor called FEA2 in the CLAVATA signaling pathway pathway will impact plant yield. Credit Jackson Lab, CSHL Usage Restrictions None 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.