A decade or so ago, scientists discovered genes they thought could be turned on to make plants take up more iron from the soil, enriching cereals, grains and other staple foods that feed millions of people around the world an iron-poor diet leading to iron deficiency anemia, says 2018 PEP Fellow, Elsbeth Walker. "But it didn't work," she adds. "Somehow the plants downregulated our efforts, and we don't understand how." Now Walker has a three-year, $870,000 grant from the National Science Foundation's Physiological Mechanisms and Biomechanics program to learn how plants thwarted those past efforts and further, how plants firmly control iron in their systems. They have good reason for this, she adds, because iron is a highly reactive metal that can damage their tissues. Read more here.