The aim of this project is understanding how tobacco plant roots grow towards sources of Zn, an important nutrient for plants. While plants are known to move their roots towards important nutrients like nitrogen, how they do this for metals like Zn is not well understood. Our previous studies showed that about 60% tobacco plants can direct their roots towards Zn when it's in short supply. We hypothesis this behavior may be linked to changes in the plant's cell walls, which could cause the roots to growth towards Zn sources. To explore this, we will grow tobacco plants in a controlled environment with low Zn and then introduce a Zn source. By using advanced imaging techniques at a synchrotron facility, we'll map where and how Zn accumulates in the roots and study the chemical changes involved. Understanding this process could help improve how crops absorb Zn from the soil, which is important for both plant health and human nutrition, especially in areas with Zn-deficient soils.