Coordinated responses of leaf and absorptive root traits under elevated CO2 concentration in temperate woody and herbaceous species

•Elevated [CO2] significantly modify leaf morphology, anatomy and physiology.•Absorptive roots become thicker under elevated [CO2], accompanied with greater cortex.•Functional traits of leaf and root coordinately respond to elevated [CO2].•Trait-responses to elevated [CO2] are more sensitive in woody than herbaceous plants.