Manqiang Liu, Lanzhou University, discusses their article: Elevated CO2 amplifies contrasting cultivar-specific plant‒soil feedbacks mediated by soil biota Elevated CO2 concentration (eCO2) can promote plant biomass production, with these effects cascading to soil biota and, in turn, feeding back to plant performance. However, crop cultivars can differ greatly in their responses to eCO2. This raises…