On the modeling paradigm of plant root nutrient acquisition

Abstract Plant root nutrient acquisition, and to a lesser extent foliar uptake, maintain plant metabolism strongly regulate terrestrial biogeochemistry carbon-climate feedbacks. However, biogeochemical models differ in their representations of leading significantly different, uncertain, carbon cycle future climate projections. Here we first review principles observations relevant three essential acquisition mechanisms: activity acquiring proteins, maintenance stoichiometry, energy expenditure for these processes. We next examine how mechanisms are considered existing modeling paradigms, conclude by recommending the capacity-based approach, need observations, necessary developments improve feedback