Arbuscular mycorrhizas modify plant responses to soil zinc addition

Zinc deficiency is one of the most commonly reported plant and human nutrient deficiencies worldwide. Conversely, Zn is also a common environmental contaminant, significantly reducing plant growth. These contrasting effects of Zn on plant growth and nutrition have been the focus of a considerable number of studies; however, most studies focus on plant responses to soil Zn concentration under either deficient or toxic concentrations, but not both